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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 13088. Отображено 100.
12-01-2012 дата публикации

Apparatus and method for determining dynamic voltage scaling mode, and apparatus and method for detecting pumping voltage using the same

Номер: US20120007661A1
Автор: Young Do Hur
Принадлежит: Hynix Semiconductor Inc

A mode determination apparatus in a semiconductor apparatus includes a first condition detection block configured to generate a first condition signal in response to a clock enable signal activated when the semiconductor apparatus enters a dynamic voltage scaling mode, a second condition detection block configured to generate a second condition signal in response to an external high voltage in the dynamic voltage scaling mode, the external high voltage having a voltage level in the dynamic voltage scaling mode different from a voltage level in a normal mode, and a signal processing block configured to generate a dynamic voltage scaling mode signal in response to the first condition signal and the second condition signal.

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Номер записи: 1
01-03-2012 дата публикации

Charge pump having ramp rate control

Номер: US20120049917A1
Автор: Thomas D. Cook
Принадлежит: Individual

A charge pump includes a first counter and a pump stage. The first counter has a control input for receiving a control signal, and an output for providing a first count value. The first count value is incremented in response to the control signal being a first logic state and the first count value is decremented in response to the control signal being a second logic state. The pump stage has a variable capacitor. The variable capacitor has a control input coupled to the output of the first counter for receiving the first count value. The capacitance value of the variable capacitor is changed in response to the first count value changing. The capacitance value is for determining a ramp-up rate of an output voltage at an output of the charge pump.

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Номер записи: 2
19-04-2012 дата публикации

Method and apparatus for discharging the capacitors of a boost converter composed of plural bridge devices

Номер: US20120091807A1
Автор: Gustavo Buiatti, Laurent Foube
Принадлежит: Mitsubishi Electric Corp

The present invention concerns a method for discharging the capacitors of a boost converter composed of a number n of bridge devices connected in series, the boost converter is connected to electric direct current providing means, each bridge device is composed of plural switches and a capacitor. The method comprises the steps of setting the switches of the bridge devices in n−1 different configurations in order to discharge the capacitors of n−1 different bridge devices within n−1 consecutive periods of time.

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Номер записи: 3
19-04-2012 дата публикации

Power amplification systems and methods

Номер: US20120092075A1
Автор: James P. Young, Ying Shi
Принадлежит: Skyworks Solutions Inc

A power amplifier system includes a power amplifier element that provides a power output signal in response to a bias signal, and a voltage converter. The voltage converter provides at least one discrete voltage output level to the power amplifier element, where the discrete voltage output level is used to develop the bias signal.

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Номер записи: 4
03-05-2012 дата публикации

Semiconductor device

Номер: US20120104854A1
Автор: Yoshio Tasaki
Принадлежит: Renesas Electronics Corp

There is provided a semiconductor device in which an influence of a power source noise is suppressed and the number of pins and the area of the semiconductor device are reduced. A power source line for a first internal circuit and a power source line for a second internal circuit are coupled to a common pin terminal. A ground line for the first internal circuit and a ground line for the second internal circuit are coupled to another common pin terminal. A power source noise generated on the power source line for the first internal circuit during an operation of the first internal circuit is absorbed by a P-channel MOS transistor and a capacitor. A power source noise generated on the ground line is absorbed by an N-channel MOS transistor and the capacitor.

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Номер записи: 5
10-05-2012 дата публикации

Charge pump circuit and operation control method thereof

Номер: US20120112724A1
Автор: Junji Nishida
Принадлежит: Ricoh Co Ltd

A charge pump circuit which steps down an input voltage inputted from an input terminal and outputs it as a step-down output voltage from a step-down output terminal, and steps up the input voltage and outputs it as a step-up output voltage from a step-up output terminal, includes: a voltage conversion circuit having a flying capacitor, a step-down output capacitor, a step-up output capacitor, and a plurality of switches, wherein the flying capacitor, the step-down output capacitor, the step-up output capacitor, and the switches are connected, and the voltage conversion circuit is capable of switching connection states by switching each on/off state of the switches; an output voltage detection circuit unit which makes a comparison of a voltage between the step-down output voltage and a first predetermined voltage, and makes a comparison of a voltage between the step-up output voltage and a second predetermined voltage, and produces and outputs each signal indicating each result of the comparisons; and a control circuit unit which performs a switching control depending on each signal outputted from the output voltage detection circuit unit.

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Номер записи: 6
10-05-2012 дата публикации

Method and apparatus for pulse width modulation

Номер: US20120112846A1
Автор: Zhao-Jun Wang
Принадлежит: Power Integrations Inc

An integrated control circuit according to aspects of the present invention includes a capacitor to develop a first current during a first time duration in response to a charge current and to develop a second voltage during a second time duration in response to a discharge current. A comparator is also included and is coupled to the capacitor to indicate when the voltage on the capacitor reaches the second voltage. A control logic sets a duty ratio of a periodic output signal in response to the time it takes the capacitor to discharge from the first voltage to the second voltage. An oscillator is coupled to provide a timing signal to the control logic. In one aspect, the control logic includes an output that is coupled to the oscillator to change a frequency of the oscillator.

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Номер записи: 7
17-05-2012 дата публикации

Semiconductor memory device and method of controlling the same

Номер: US20120120739A1
Автор: Koichi Nishimura, Kotoku Sato, Shinya Fujioka, Tomohiro Kawakubo
Принадлежит: Fujitsu Semiconductor Ltd

An internal voltage generator when activated, generates an internal voltage to be supplied to an internal circuit. Operating the internal voltage generator consumes a predetermined amount of the power. In response to a control signal from the exterior, an entry circuit inactivates the internal voltage generator. When the internal voltage generator is inactivated, the internal voltage is not generated, thereby reducing the power consumption. By the control signal from the exterior, therefore, a chip can easily enter a low power consumption mode. The internal voltage generator is exemplified by a booster for generating the boost voltage of a word line connected with memory cells, a substrate voltage generator for generating a substrate voltage, or a precharging voltage generator for generating the precharging voltage of bit lines to be connected with the memory cells.

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Номер записи: 8
21-06-2012 дата публикации

Balancing voltages between battery banks

Номер: US20120153728A1
Автор: Thomas C. Greening, William C. Athas
Принадлежит: Apple Inc

A system that balances voltages between battery banks. The system includes battery banks, including a first bank and a second bank, and a first capacitor. The system also includes a first set of switching devices which selectively couple first and second terminals of the first capacitor to first and second terminals of the first bank, and to first and second terminals of the second bank. The system includes a clocking circuit which generates clock signals with substantially non-overlapping first and second clock phases. This clocking circuit is configured so that during the first phase the first and second terminals of the first capacitor are coupled to the first and second terminals of the first bank, respectively, and during the second phase the first and second terminals of the first capacitor are coupled to the first and second terminals of the second bank, respectively.

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Номер записи: 9
28-06-2012 дата публикации

Charge pump circuit

Номер: US20120161857A1
Автор: Makoto Sakaguchi
Принадлежит: Renesas Electronics Corp

A charge pump circuit includes first to fifth transistors disposed between a power supply terminal and an output terminal; first to fourth capacitive components between the junctions of the first to fifth transistors and one of first and second clock input terminals; sixth to tenth transistors between the power supply terminal and the output terminal; and fifth to eighth capacitive components between the junctions of the sixth to tenth transistors and one of the first and second clock input terminals. The conduction state of the fifth transistor is controlled according to the potential of a first node. The conduction state of the tenth transistor is controlled according to the potential of a second node. Each transistor is disposed on a triple well, and an n-well and a p-well are electrically coupled to each other in at least the triple wells forming the first to fourth and six to ninth transistors.

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Номер записи: 10
09-08-2012 дата публикации

Charge pump

Номер: US20120200340A1
Автор: Adam L. Shook, Byungchul Jang
Принадлежит: Texas Instruments Inc

Traditionally, charge pumps, which used flying capacitors, were limited to a maximum divide ratio of N+1 (where N is the number of flying capacitors). Here, however, a charge pump has been provided that allows for a dramatically increased divide ratio. Specifically, several switched capacitor circuits (which are controlled by a driver) allow for flying capacitors to be arranged to provide a maximum divide ratio of 3·2 (N-1) −1.

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Номер записи: 11
04-10-2012 дата публикации

Systems and methods for integrated switch-mode dc-dc converters for power supplies

Номер: US20120249103A1
Автор: II Paul W. Latham, Mansur B. Kiadeh, Sudha Durvasula
Принадлежит: Maxim Integrated Products Inc

A first control system for a power supply includes a switch-mode DC-DC converter module and an FET gate drive module. The switch-mode DC-DC converter module receives an input voltage and generates first and second voltages, the first voltage powering a DC-DC control module. The FET gate drive module selectively drives a plurality of FETs of the power supply using the second voltage thereby generating a desired output voltage from the input voltage. A second control system is directed to driving the second voltage to a desired gate voltage, wherein the desire gate voltage is determined based on at least one of a plurality of operating parameters. A third control system includes controlling first and second voltages generated by a SIDO voltage converter based on the first and second voltages and a damping factor, and generating the damping factor based on current flowing through the inductor of the SIDO voltage converter.

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Номер записи: 12
18-10-2012 дата публикации

Charge pump device

Номер: US20120262224A1
Автор: Chi Yi Shao, Paul C.-P. CHAO
Принадлежит: Individual

A charge pump device is coupled to first and second input terminals receiving an AC signal and comprises an electric switch set and two voltage boost circuits. The electric switch set is coupled to the first and second input terminals and a ground terminal and switches the conduction status thereof according to the AC signal. The two voltage boost circuits are interconnected and coupled to the first and second input terminals and the electric switch set. The boost circuits receive the AC signal according to the conduction status, respectively boost voltage in positive and negative semi-periods of the AC signal, and alternatively output a voltage at least two times the peak voltage of the AC signal, to a load. The present invention not only boosts voltage by several folds within a cycle but also outputs voltage by dual phases to reduce ripple of output voltage.

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Номер записи: 13
25-10-2012 дата публикации

Voltage generator and method of generating voltage

Номер: US20120268179A1
Автор: Moon Soo Sung
Принадлежит: Hynix Semiconductor Inc

A voltage generator includes a clock generator configured to generate a first clock signal and a second clock signal having a longer cycle than the first clock signal, a pumping unit configured to generate a pumping voltage in response to the first or second clock signal, a first detection circuit configured to detect the pumping voltage and generate a first control signal for controlling the operation of the pumping unit based on the result of the detection, and a second detection circuit configured to generate a second control signal for outputting the first or second clock signal generated from the clock generator depending on whether the first control signal maintains an enable state for a specific time.

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Номер записи: 14
01-11-2012 дата публикации

Charge pump feedback control device and method using the same

Номер: US20120274394A1
Автор: Cheng-Pang Chan
Принадлежит: Realtek Semiconductor Corp

Charge pump feedback control device and method are provided. The device is coupled to the charge pump unit which receives an input voltage so as to generate an output voltage and has switches and at least one capacitor, the device includes: a compensation unit, a modulation unit, and a phase control unit. The compensation unit receives the output voltage, compensates the output voltage for stability, and generates an error signal. The modulation unit receives the error signal, modulates the error signal, and correspondingly generates a modulation signal. The phase control unit receives the modulation signal so as to generate phase signal, and controls the plurality of switches of the charge pump unit according to the plurality of phase signal so as to generate the output voltage through the input voltage charging/discharging at least one capacitor of the charge pump unit.

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Номер записи: 15
29-11-2012 дата публикации

Charge pump circuit with fast start-up

Номер: US20120300552A1
Автор: Fernando Zampronho NETO, Walter Luis Tercariol
Принадлежит: FREESCALE SEMICONDUCTOR INC

A charge pump circuit ( 300 ) includes a charge pump ( 330 ), and clocking circuitry that includes a clock generator ( 310 ) and a bypass circuit ( 320 ). The clocking circuitry generates clock signals and higher frequency alternative clock signals, for driving the charge pump. Upon start-up of the charge pump circuit and depending on a present value of an output voltage of the charge pump, the clocking circuitry couples to the charge pump either the alternative clock signals and not the clock signals, or the clock signals and not the alternative clock signals. Prior to completion of start-up of the charge pump circuit, at least two rows of pump unit cells are driven by a same alternative clock signal, thereby causing a pump unit cell in a row to charge/discharge at a same time as another pump unit cell in another row, thereby decreasing a start-up time of the charge pump circuit.

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Номер записи: 16
06-12-2012 дата публикации

Electronic apparatus and electronic timepiece

Номер: US20120307598A1
Автор: Takanori Hasegawa
Принадлежит: Seiko Instruments Inc

A power generating unit generates electric power according to light incident on a light-receiving surface. A power storage unit stores the electric power generated by the power generating unit and outputs the stored electric power. A generated-power voltage detecting unit detects the voltage of the electric power generated by the power generating unit. A stored electricity voltage detecting unit detects the voltage output from the power storage unit. A display unit displays a character or an image. The display control unit changes contents to be displayed on the display unit on the basis of the voltage of the electric power generated by the power generating unit, which is detected by the generated-power voltage detecting unit, and the voltage of the electric power output from the power storage unit, which is detected by the stored electricity voltage detecting unit.

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Номер записи: 17
27-12-2012 дата публикации

Boosting circuit

Номер: US20120326770A1
Автор: Hiroki Murakami
Принадлежит: Winbond Electronics Corp

A boosting circuit, includes an output circuit including a first transmission circuit, transmitting charges of a first boosting node to a first output node according to a first transmission control signal, a detection circuit, detecting the voltage level of the first output node, and a pre-charge circuit pre-charging the first boosting node according a detection signal of the detection circuit; a first pump circuit includes a second transmission circuit, transmitting charges to a second output node according to a second transmission control signal, and a first capacitance unit, coupled to the first boosting node, boosting the voltage level of the first boosting node according to charges transmitted in the second output node; and a control circuit, coupled to the output circuit and the first pump circuit, controls the second transmission control signal according to the voltage level of the first output node.

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Номер записи: 18
03-01-2013 дата публикации

Power Harvesting Device

Номер: US20130002045A1
Автор: Boris Golubovic, Mudhafar Hassan-Ali
Принадлежит: Individual

Techniques are described to harvest power from a single current carrying conductor to furnish power to a powered device. The techniques employ a power harvesting device that is coupled to the conductor. In implementations, the conductor has a first path and a second path. The power harvesting device includes a first switch coupled to the second path. An energy storing element is coupled to the first path and configured to store energy based upon the direct current flowing through the first path. The power harvesting device also includes a power condition and management device coupled to the energy storing element configured to switch the first switch to a closed configuration when the energy storing element is measured to have a predefined high voltage threshold, and to switch the first switch to an open configuration when the energy storing element is measured to have a predefined low voltage threshold.

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Номер записи: 19
14-02-2013 дата публикации

Semiconductor device and radio communication device

Номер: US20130038505A1
Автор: Masanori Iijima, Yoshiaki Harasawa
Принадлежит: Individual

To provide a fast charge means for a capacitor in a negative bias generation circuit. A capacitor is present in a down converter in a negative bias generation circuit. In order to perform fast charge, the capacitance of the capacitor is reduced and a necessary amount of charge is minimized. On the other hand, an external capacitance provided separately from the capacitor in the down converter is coupled directly to a power supply voltage and charged. After the capacitor in the down converter is charged, the external capacitance and the capacitor in the down converter are coupled in parallel. Due to this, it is made possible to aim at both the increase in charge speed and the improvement of resistance to ripple noise.

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Номер записи: 20
28-02-2013 дата публикации

Reduced clock feed-through systems, methods and apparatus

Номер: US20130052968A1
Автор: Florinel G. Balteanu, Jakub F. Pingot, Peter Harris Robert Popplewell
Принадлежит: Skyworks Solutions Inc

Implementations of radio frequency switch controllers within the scope of the appended claims are configured to reduce the impact of the clock signal induced spurs. In particular, implementations of switch controllers described herein include a poly-phase clocking scheme, as opposed to a single phase to clock the charge pump stages of an negative voltage generator. In some implementations poly-phase clocking schemes reduce the clock signal induced spurs and may preclude the need for additional on-chip or off-chip decoupling capacitors that add to the cost and physical size of a complete front end module solution.

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Номер записи: 21
14-03-2013 дата публикации

Power switch reliability in switched capacitor dc-dc converter

Номер: US20130063120A1
Автор: Benno ANKELE, Stefano Marsili, Werner Hoellinger
Принадлежит: INFINEON TECHNOLOGIES AG

Representative implementations of devices and techniques minimize hot carrier stress in a switched capacitor dc-dc converter. Multi-switch arrangements may be used in conjunction with a timing scheme to stage power switch operation.

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Номер записи: 22
18-04-2013 дата публикации

Power converters with integrated capacitors

Номер: US20130094157A1
Автор: David Giuliano
Принадлежит: Arctic Sand Technologies Inc

An apparatus having a power converter circuit having a first active layer having a first set of active devices disposed on a face thereof, a first passive layer having first set of passive devices disposed on a face thereof, and interconnection to enable the active devices disposed on the face of the first active layer to be interconnected with the non-active devices disposed on the face of the first passive layer, wherein the face on which the first set of active devices on the first active layer is disposed faces the face on which the first set of passive devices on the first passive layer is disposed.

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Номер записи: 23
02-05-2013 дата публикации

Pulse frequency modulation control for switched capacitor dc-dc converter

Номер: US20130106381A1
Автор: Stefano Marsili
Принадлежит: INFINEON TECHNOLOGIES AG

Representative implementations of devices and techniques minimize switching losses in a switched capacitor dc-dc converter. Variable frequency control, including Pulse frequency modulation, is used to control switching based on an existing load.

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Номер записи: 24
02-05-2013 дата публикации

Digital controller for switched capacitor dc-dc converter

Номер: US20130106382A1
Автор: Gerhard MADERBACHER, Stefano Marsili, Werner Hoellinger
Принадлежит: INFINEON TECHNOLOGIES AG

Representative implementations of devices and techniques minimize switching losses in a switched capacitor dc-dc converter. A digital controller is used to control switching, based on an existing load.

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Номер записи: 25
09-05-2013 дата публикации

High-voltage power source

Номер: US20130114970A1
Автор: Taro Minobe
Принадлежит: Canon Inc

A high-voltage power source includes a switching unit configured to be driven according to a frequency signal, a voltage resonance unit configured to generate a voltage according to driving of the switching unit, a rectification unit configured to rectify and amplify the voltage generated by the voltage resonance unit, a separation unit configured to separate an alternating current generated by the voltage resonance unit and a direct current generated by the rectification unit from each other, and a current detection unit configured to detect the current generated by the voltage resonance unit.

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Номер записи: 26
16-05-2013 дата публикации

CONVERTER

Номер: US20130119970A1
Автор: Davidson Colin, Keitley Adrian, Trainer David, Whitehouse Robert, Withanage Ruchira
Принадлежит: ALSTOM Technology Ltd

A DC voltage source converter for use in high voltage DC power transmission comprising at least one chain-link converter connected between first and second DC terminals. The or each chain-link converter includes a chain of modules connected in series and each module including at least one pair of semiconductor switches connected in parallel with an energy storage device. The or each chain-link converter is operable when DC networks are connected to the first and second DC terminals to control switching of the modules to selectively charge or discharge the energy storage device of one or more of the modules, as required, to offset any difference in the DC voltage levels of the DC networks. 140. A DC voltage source converter for use in high voltage DC power transmission comprising at least one chain-link converter connected between first and second DC terminals , the or each chain-link converter including a chain of modules connected in series and each module including at least one pair of semiconductor switches () connected in parallel with an energy storage device , wherein the or each chain-link converter is operable when DC networks are connected to the first and second DC terminals to control switching of the modules to selectively charge or discharge the energy storage device of one or more of the modules , as required , to offset any difference in the DC voltage levels of the DC networks and wherein further including a switching assembly to toggle between electrical charging and discharging of the or each module of the or each chain-link converter ,the or each chain-link converter being connected in parallel with the first DC terminal and with a series arrangement of the second DC terminal and the switching assembly ora series arrangement of the or each chain-link converter and the second DC terminal is connected in parallel with the first DC terminal and is connected in parallel with the switching assembly.2. A DC voltage source converter according to claim 1 ...

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Номер записи: 27
27-06-2013 дата публикации

Charge pumping apparatus using optimum power point tracking and method thereof

Номер: US20130162335A1
Автор: Chul-Woo Kim, Jihwan Kim, Jungmoon Kim
Принадлежит: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

A charge pumping apparatus includes a voltage pumping unit for pumping an input voltage, a voltage pumping control unit for controlling the voltage pumping unit according to a comparison result between the input voltage and an input criterion voltage and a comparison result between an output voltage output from the voltage pumping unit and an output criterion voltage, and an optimum power point tracking unit for tracking an optimum power point in the case of detecting that the output voltage decreases lower than the output criterion voltage, and adjusting an input impedance to change the input criterion voltage to a voltage corresponding to the optimum power point, wherein the optimum power point is a power point where an input power according to the input voltage becomes a maximum. Since the optimum power point is tracked by measuring only a voltage without a current sensor, a power loss is small.

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Номер записи: 28
27-06-2013 дата публикации

Time-Multiplexed-Capacitor DC/DC Converter With Multiple Outputs

Номер: US20130162336A1
Автор: Richard K. Williams
Принадлежит: Advanced Analogic Technologies Inc

A multiple output DC-to-DC voltage converter using a new time-multiplexed-capacitor converter algorithm and related circuit topologies is herein disclosed. One embodiment of this invention includes a flying capacitor, a first output node, a second output node, and a switching network. The switching network configured to provide the following modes of circuit operation: 1) a first mode where the positive electrode of the flying capacitor is connected to an input voltage and the negative electrode of the flying capacitor is connected to ground; 2) a second mode where the negative electrode of the flying capacitor is connected to the input voltage and the positive electrode of the flying capacitor is connected to the first output node; and 3) a third mode where the positive electrode of the flying capacitor is connected to ground and the negative electrode of the flying capacitor is connected to the second output node.

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Номер записи: 29
18-07-2013 дата публикации

SINGLE +82 C-BUCKBOOST CONVERTER WITH MULTIPLE REGULATED SUPPLY OUTPUTS

Номер: US20130181521A1
Автор: Khlat Nadim
Принадлежит: RF MICRO DEVICES, INC

The detailed description described embodiments of highly efficient power management systems configurable to simultaneously generate various output voltage levels for different components, sub-assemblies, and devices of electronic devices, sub-systems, and systems. In particular, the described embodiments include power management systems that substantially reduce or eliminate the need for inductors, large numbers of capacitors, and complex switching techniques to transform an available voltage level from a system power source, such as a battery, to more desirable power supply voltages. Some described embodiments include a charge pump that uses only two flying capacitors to simultaneously generate multiple supply outputs, where each of the multiple supply outputs may provide either the same or a different output voltage level. The described embodiments also include efficient power management systems that flexibly provide highly accurate voltage levels that are substantially insensitive to the voltage level provided by a system power source, such as a battery. 12-. (canceled)3. A method for simultaneously generating with a charge pump a plurality of output voltages for a plurality of charge pump outputs , where charge pump derives each of the plurality of output voltages for each of the plurality of charge pump outputs from a supply voltage , wherein the charge pump includes only a first flying capacitor and a second flying capacitor , comprising:establishing a first communication path from the supply voltage through at least one of the first flying capacitor and the second flying capacitor to a first charge pump output capacitor associated with a first charge pump output such that charge flows between the at least one of the supply voltage, the first flying capacitor, the second flying capacitor, and/or a combination thereof, and the first charge pump output capacitor associated with the first charge pump output to substantially generate a first output voltage on the ...

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Номер записи: 30
25-07-2013 дата публикации

ELECTRONIC TIMEPIECE

Номер: US20130188460A1
Автор: IHASHI Tomohiro, KATO Kazuo
Принадлежит: SEIKO INSTRUMENTS INC.

An electronic timepiece of the invention is configured to compare a no-illuminance no-operation period (a period in which no light is incident on a solar panel and a state in which no operation is performed in an operating unit continues), with a predetermined first transfer period (for example, 2 hours) when the time measurement action is not in execution in the chronograph mode or the timer mode, and compare the no-illuminance no-operation period with a predetermined second transfer period (for example, 72 hours) longer then the first transfer period when the time measurement action is in execution in a chronograph mode or the timer mode. The electronic timepiece is transferred to the power save mode when the no-illuminance no-operation period reaches the transfer period and stops a display action on a display unit. 1. An electronic timepiece having a solar panel configured to generate power upon reception of light and configured to be operated by power supplied from a secondary battery charged by a generated voltage from the solar panel , is transferred to a power save mode under predetermined conditions , and stops part or all of display actions on a display unit , comprising:an operating unit configured to operate the electronic timepiece;a time measuring section configured to perform a time measuring action;a no-illuminance no-operation period detector configured to measure a period in which no light is incident on the solar panel and a state in which the operation is not performed in the operating unit continues as a no-illuminance no-operation period; anda controller configured to compare the no-illuminance no-operation period measured by the no-illuminance no-operation period detector with a predetermined first transfer period when the time measuring action is not performed in the time measuring unit, compares the no-illuminance no-operation period measured by the no-illuminance no-operation period detector with a predetermined second transfer period longer ...

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Номер записи: 31
01-08-2013 дата публикации

ELECTRONIC TIMEPIECE

Номер: US20130194896A1
Автор: FUKUSHIMA Toshitaka, HASEGAWA Takanori, IHASHI Tomohiro, KATO Kazuo, TAKAKURA Akira
Принадлежит: SEIKO INSTRUMENTS INC.

According to an electronic timepiece of the invention, when a secondary battery is in an uncharged state and an oscillation circuit, a display unit, and a CPU are restored from an inoperable state to a normally charged state which makes the respective members to be operable, the electronic timepiece activates and oscillates the oscillation circuit when a secondary battery voltage reaches a predetermined first voltage (for example, 0.9 V), and cancels a reset of the CPU when the secondary battery voltage reaches a predetermined second voltage (for example, 1.2 V), and starts a time-of-day display on the display unit when the secondary battery voltage reaches a predetermined third voltage (2.2 V). 1. An electronic timepiece configured to be operated by power supplied from a secondary battery charged by a generated voltage from a solar panel configured to generate power upon reception of light ,wherein, according to a voltage of the secondary battery, the electronic timepiece has a predetermined operation start voltage at which the electronic timepiece is activated and starts an operation and, and a predetermined display start voltage at which the electronic timepiece starts a display action on a display unit, andthe operation start voltage is set to be lower than the display start voltage.2. The electronic timepiece according to claim 1 , comprising:a CPU configured to control time counting and the display action of the electronic timepiece;an oscillating circuit configured to generate a clock signal and supplies the generated clock signal to the CPU when the voltage of the secondary battery is equal to or higher than a predetermined first voltage;a reset circuit configured to reset the CPU when the voltage of the secondary battery is equal to or lower than a predetermined second voltage higher than the first voltage, and cancel reset of the CPU when the voltage of the second battery exceeds the second voltage;the display unit configured to perform display upon ...

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Номер записи: 32
01-08-2013 дата публикации

ELECTRONIC TIMEPIECE

Номер: US20130194897A1
Автор: FUKUSHIMA Toshitaka, HASEGAWA Takanori, IHASHI Tomohiro, KATO Kazuo, TAKAKURA Akira
Принадлежит: SEIKO INSTRUMENTS INC.

There is provided an electronic timepiece of the invention that includes a solar panel which receives light to generate electric power, is operated with the electric power supplied from a secondary battery charged with an electromotive voltage of the solar panel, and stops a display operation of a display unit with transition to a power saving mode under predetermined conditions, the electronic timepiece including a control unit (mode control unit) which avoids transition from the normal mode to the power saving mode, when a voltage of the secondary battery is equal to or more than a predetermined voltage value. 1. An electronic timepiece that includes a solar panel which receives light to generate electric power , is operated with the electric power supplied from a secondary battery charged with an electromotive voltage of the solar panel , and includes a normal mode in which time point display is performed on a display unit , and a power saving mode in which a state where light incident to the solar panel is not obtained is detected to stop time point display of the display unit , the electronic timepiece comprising:a control unit which avoids transition from the normal mode to the power saving mode, when a voltage of the secondary battery is equal to or more than a predetermined first voltage value.2. The electronic timepiece according to claim 1 , further comprising:an overcharge protection circuit which reduces an output voltage of the solar panel when the voltage of the secondary battery is equal to the predetermined first voltage value or equal to or more than a predetermined second voltage value which exceeds the first voltage value,wherein, in a state where the output voltage of the solar panel is reduced due to the operation of the overcharge protection circuit, the control unit avoids the transition from the normal mode to the power saving mode.3. The electronic timepiece according to claim 1 , further comprising:an illuminance detection circuit which ...

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Номер записи: 33
01-08-2013 дата публикации

ELECTRONIC TIMEPIECE

Номер: US20130194898A1
Автор: FUKUSHIMA Toshitaka, HASEGAWA Takanori, IHASHI Tomohiro, KATO Kazuo, TAKAKURA Akira
Принадлежит: SEIKO INSTRUMENTS INC.

There is provided an electronic timepiece that includes a solar panel which receives light to generate electric power, is operated with the electric power supplied from a secondary battery charged with output voltage of the solar panel, and includes a normal mode in which clock display is performed on a display unit and a power saving mode in which clock display on the display unit is stopped, based on illuminance detection of the solar panel, the electronic timepiece including: a mode control unit which switches cycles of the illuminance detection, by setting a cycle of the illuminance detection of the normal mode as a first cycle (for example, one minute), and a cycle of the illuminance detection of the power saving mode as a second cycle (for example, two seconds). 1. An electronic timepiece that includes a solar panel which receives light to generate electric power , is operated with the electric power supplied from a secondary battery charged with output voltage of the solar panel , and includes a normal mode in which clock display is performed on a display unit and a power saving mode in which clock display on the display unit is stopped , based on illuminance detection of the solar panel , the electronic timepiece comprising:a control unit which switches cycles of the illuminance detection, by setting a cycle of the illuminance detection of the normal mode as a first cycle, and a cycle of the illuminance detection of the power saving mode as a second cycle which is different from the first cycle.2. The electronic timepiece according to claim 1 ,wherein the first cycle of the illuminance detection of the normal mode is longer than the second cycle of the illuminance detection of the power saving mode.3. The electronic timepiece according to claim 1 ,wherein, in a case of transition from the normal mode to the power saving mode, the control unit performs the illuminance detection with the second cycle in first predetermined time immediately before the ...

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Номер записи: 34
22-08-2013 дата публикации

Integrated circuits with bi-directional charge pumps

Номер: US20130214853A1
Автор: Tien-Chun Yang, Yvonne Lin
Принадлежит: Taiwan Semiconductor Manufacturing Co TSMC Ltd

A method includes receiving a first voltage at a first input circuit of a bi-directional charge pump circuit, selectively turning on a first switch of a switching circuit that is coupled electrically to a deep N-well transistor of a first set of one or more intermediate pump stages that are coupled between the first input circuit and a first output circuit, and providing a third voltage from the first output circuit in response to receiving a second voltage at an input of a first diode of the output circuit from the first set of the one or more intermediate pump stages.

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Номер записи: 35
12-09-2013 дата публикации

Boosting circuit

Номер: US20130234768A1
Автор: Masaya Murata, Tomohiro Oka
Принадлежит: Seiko Instruments Inc

A boosting circuit is provided which performs an appropriate boosting operation in accordance with load capacitance. In the boosting circuit, a slope control circuit is provided between a limiter circuit, which limits a high voltage obtained by a charge pump circuit to a desired boosted voltage VPP, and a discharge circuit, which makes the boosted voltage VPP drop quickly to a power supply voltage VCC after the completion of writing, to enable a boosting operation in an appropriate boosted-voltage reach time, by increasing the time taken to reach the boosted voltage VPP in the case where the load capacitance is low, while keeping the time taken to reach the boosted voltage VPP unchanged, irrespective of the presence/absence of the slope control circuit, in the case where the load capacitance is high as in the case of selecting the memory cells collectively.

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Номер записи: 36
26-09-2013 дата публикации

Analog electronic watch

Номер: US20130250741A1
Автор: Kotaro Watanabe, Makoto Mitani
Принадлежит: Seiko Instruments Inc

The analog electronic watch includes: a crystal oscillator; an oscillator circuit; a frequency divider circuit; an output control circuit; a constant voltage circuit; and a cell. The constant voltage circuit and the output control circuit are powered from the cell. The oscillator circuit and the frequency divider circuit are powered from the constant voltage circuit. The constant voltage circuit is capable of outputting a first constant voltage and a second constant voltage in a switchable manner. The second constant voltage is a voltage which is equal to or lower than a cell voltage. The first constant voltage is a voltage which is smaller than the second constant voltage. The constant voltage is switched to the second constant voltage in a period of outputting the motor drive pulse.

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Номер записи: 37
03-10-2013 дата публикации

High Efficiency Inductor-less Off-Line LED Driver

Номер: US20130257277A1
Автор: Horst Knoedgen, Stefan Zudrell-Koch
Принадлежит: Dialog Semiconductor GmbH

The present document relates to providing power for driving SSL devices. A power converter converts a varying input voltage to supply an output voltage to a SSL device in series with a current source. The power converter comprises one or more capacitors; a plurality of switches to couple the capacitors in a plurality of configurations. A control unit operates the power converter in a plurality of operational modes providing a corresponding plurality of different conversion ratios between the input/output voltages. The operational modes comprise a first phase and a second phase, during which the capacitors are differently arranged. The control unit controls the switches to alternate between the phases at a commutation cycle rate. The control unit sets the operational mode based on the varying input voltage.

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Номер записи: 38
10-10-2013 дата публикации

Step-up circuit

Номер: US20130265027A1
Автор: Fumihiro Inoue
Принадлежит: Mitsumi Electric Co Ltd

A step-up circuit includes a capacitor, a transistor connected to the capacitor, and a reference voltage generator circuit configured to supply the transistor with a reference voltage that causes a rate of voltage increase relative to supply voltage to vary in accordance with the supply voltage.

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Номер записи: 39
07-11-2013 дата публикации

DUAL INDUCTIVE ELEMENT CHARGE PUMP BUCK AND BUCK POWER SUPPLIES

Номер: US20130293310A1
Автор: Berchtold Jean-Christophe, Colles Joseph Hubert, Deuchars Robert, Jones David E., Levesque Chris, Southcombe William David, Stockert Terry J., Yoder Scott, Zimlich David
Принадлежит:

A direct current (DC)-DC converter, which includes a charge pump buck power supply and a buck power supply is disclosed. The charge pump buck power supply includes a charge pump buck converter, a first inductive element, and an energy storage element. The charge pump buck converter and the first inductive element are coupled in series between a DC power supply, such as a battery, and the energy storage element. The buck power supply includes a buck converter, a second inductive element, and the energy storage element. The buck converter and the second inductive element are coupled in series between the DC power supply and the energy storage element. As such, the charge pump buck power supply and the buck power supply share the energy storage element. 1. Circuitry comprising:a charge pump buck power supply comprising a charge pump buck converter, a first inductive element, and an energy storage element, such that the charge pump buck converter and the first inductive element are coupled in series between a direct current (DC) power supply and the energy storage element; and the buck converter and the second inductive element are coupled in series between the DC power supply and the energy storage element; and', 'the charge pump buck power supply and the buck power supply share the energy storage element., 'a buck power supply comprising a buck converter, a second inductive element, and the energy storage element, such that2. The circuitry of wherein:during a first converter operating mode, the charge pump buck power supply is adapted to receive and convert a DC power supply signal from the DC power supply to provide a first switching power supply output signal to a load based on a setpoint; andduring a second converter operating mode, the buck power supply is adapted to receive and convert the DC power supply signal from the DC power supply to provide the first switching power supply output signal to the load based on the setpoint, wherein the setpoint is based on a ...

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Номер записи: 40
07-11-2013 дата публикации

CHARGE PUMP

Номер: US20130294123A1
Автор: Chen Wei-Chih, CHUANG Chen-Jung
Принадлежит:

A charge pump includes a timing signal generator for generating complementary first and second timing signals, and a voltage booster including a plurality of voltage boosting circuits. Each of the voltage boosting circuits includes input and output terminals, first and second capacitors each having first and second ends, and a switch module. The switch module is controllable to make or break electrical connection between the second end of the first capacitor and each of the input and output terminals and between the second end of the second capacitor and each of the input and output terminals. The first end of each of the first and second capacitors of a first one of the voltage boosting circuits receives a respective one of the first and second timing signals. 1. A charge pump comprising:a timing signal generator configured for generating a first timing signal and a second timing signal that is an inverse of the first timing signal; and a bias voltage input terminal,', 'a bias voltage output terminal,', 'a first capacitor having a first end and a second end,', 'a second capacitor having a first end and a second end, and', 'a switch module coupled electrically to said bias voltage input terminal, said bias voltage output terminal, and said second ends of said first and second capacitors, and controllable to switch between a first state, in which electrical connection is established between said second end of said first capacitor and said bias voltage output terminal and between said second end of said second capacitor and said bias voltage input terminal, and a second state, in which electrical connection is established between said second end of said first capacitor and said bias voltage input terminal and between said second end of said second capacitor and said bias voltage output terminal;, 'a voltage booster including a series connection of a plurality of voltage boosting circuits, each of said voltage boosting circuits including'}wherein said bias voltage ...

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Номер записи: 41
14-11-2013 дата публикации

CHARGE PUMP CIRCUIT AND METHOD FOR GENERATING A SUPPLY VOLTAGE

Номер: US20130300495A1
Автор: SCHATZBERGER Gregor
Принадлежит:

A charge pump circuit () comprises a first stage () and at least a second stage (), each having a capacitor () and a current source (). The charge pump circuit () is configured such that, in a first phase (A) of operation, the capacitor () of the first stage () is switched in series to the current source () of the first stage () and the capacitor () of the second stage () is switched in series to the current source () of the second stage () and that, in a second phase (B) of operation, the capacitor () of the first stage () and the capacitor () of the second stage () are switched in series for providing a supply voltage (VHF) at an output () of the charge pump circuit (). A comparator signal (SCOM) is generated by comparing a voltage at an electrode of one of the capacitors () of the first and the at least second stage () with a reference voltage (VR). The first and the second phase (A, B) are set depending on the comparator signal (SCOM). 1. A charge pump circuit , comprising:a first stage and an at least second stage, each having a capacitor and a current source; and a first input which is coupled to an electrode of one of the capacitors of the first and the at least second stage,', 'a second input for receiving a reference voltage, and', 'an output for generating a comparator signal,, 'a comparator having'}wherein the charge pump circuit is configured such that, in a first phase of operation, the capacitor of the first stage is switched in series to the current source of the first stage for charging the capacitor of the first stage and the capacitor of the second stage is switched in series to the current source of the second stage for charging the capacitor of the second stage and that, in a second phase of operation, the capacitor of the first stage and the capacitor of the second stage are switched in series for providing a supply voltage at an output of the charge pump circuit, andwherein the first and the second phase are set depending on the comparator ...

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Номер записи: 42
21-11-2013 дата публикации

SEMICONDUCTOR DEVICE AND DRIVING METHOD THEREOF

Номер: US20130307496A1
Автор: Watanabe Kazunori
Принадлежит: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

One object of the invention is to reduce discharge of electric charge from a capacitor when supply of power supply voltage to a charge pump circuit is stopped and restarted, so that a time required after the supply of power supply voltage is restarted and before an input signal is boosted is shortened. A semiconductor device includes a boosting circuit portion including a charge transfer element and a capacitor, boosting a voltage level of an input signal, and outputting an output signal having a boosted voltage level; a detection circuit monitoring a voltage level of the output signal; and a control circuit outputting a signal for controlling boosting of the voltage level of the input signal to the boosting circuit portion in accordance with the voltage level obtained by the detection circuit. The boosting circuit portion includes a switch electrically connected to the capacitor and the charge transfer element. 1. A semiconductor device comprising:a boosting circuit portion including a charge transfer element and a capacitor, the boosting circuit portion configured to boost a voltage level of an input signal, and configured to output an output signal having a boosted voltage level;a detection circuit configured to monitor a voltage level of the output signal; anda control circuit configured to output a signal for controlling boosting of the voltage level to the boosting circuit portion in accordance with the voltage level obtained by the detection circuit,wherein the boosting circuit portion includes a switch electrically connected to the capacitor and the charge transfer element.2. The semiconductor device according to claim 1 , wherein the charge transfer element is a diode element.3. The semiconductor device according to claim 1 , wherein the detection circuit comprises two resistors.4. The semiconductor device according to claim 1 , wherein the control circuit comprises an operation amplifier.5. The semiconductor device according to claim 1 , wherein the ...

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Номер записи: 43
28-11-2013 дата публикации

CHARGE PUMP CIRCUIT AND METHODS OF OPERATIONS THEREOF

Номер: US20130314151A1
Автор: Lesso John P.
Принадлежит: Wolfson Microelectronics plc

A charge pump circuit, and associated method and apparatuses, for providing a split-rail voltage supply, the circuit having a network of switches that is operable in a number of different states and a controller for operating the switches in a sequence of said states so as to generate positive and negative output voltages together spanning a voltage approximately equal to the input voltage and centered on the voltage at the common terminal. 132-. (canceled)33. A charge pump circuit comprising:an input terminal for receiving an input voltage;a common terminal;first and second output terminals for connection to respective first and second reservoir capacitors;first and second flying capacitor terminals for connection to a first flying capacitor;third and fourth flying capacitor terminals for connection to a second flying capacitor;a switch network connected to said input terminal, said common terminal, said first and second output terminals and said first, second, third and fourth flying capacitor terminals;said switch network being operable in at least a first mode of operation in a sequence of states comprising at least a first state and a second state so as to generate first positive and negative output voltages respectively at said first and second output terminals;wherein in said first state said first and second flying capacitors are connected in series between the input terminal and the common terminal and disconnected from the first and second output terminals; andwherein in said second state said first and second flying capacitors are each connected in parallel with a different one of said first and second reservoir capacitors.34. A charge pump circuit as claimed in wherein said first positive and negative output voltages are each equal in magnitude to half the input voltage.35. A charge pump circuit as claimed in wherein in said first mode of operation said sequence of states further comprises a third state in which said first and second flying capacitors ...

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Номер записи: 44
05-12-2013 дата публикации

CHARGE PUMPS WITH IMPROVED LATCHUP CHARACTERISTICS

Номер: US20130321045A1
Автор: Kern Thomas, Loibl Ulrich
Принадлежит: INFINEON TECHNOLOGIES AG

Some embodiments of the present disclosure relate to improved regulators for charge pumps. Such regulators selectively activate a charge pump based not only on the voltage output of the charge pump, but also on an series of wake-up pulses that are delivered at predetermined time intervals and which are delivered independently of the voltage output of the charge pump. Hence, these wake-up pulses prevent extended periods of time in which the charge pump is inactive, thereby helping to prevent latch-up in some situations. 1. A charge pump , comprising:a plurality of charge pump stages arranged along a charge transfer path extending between a charge pump output and a DC supply terminal;a clock generator to provide a clock signal, an inverted clock signal, and auxiliary clock signals to the plurality of charge pump stages to facilitate charge transfer along the charge transfer path;a voltage monitor to monitor a voltage associated with the charge pump output and to continuously adjust a voltage level of a control signal based on whether the monitored voltage has a predetermined relationship with a predetermined voltage threshold; anda variable current source or current sink coupled to the charge pump output and adapted to adjust a current sourced to or sunk from the charge pump output based on the control signal.2. The charge pump of claim 1 , wherein the control signal is an analog signal that varies over a continuum of states in time.3. A charge pump claim 1 , comprising:a plurality of charge transfer transistors arranged in series along a charge transfer path extending between an output of the charge pump and a supply terminal, wherein a first charge transfer node is arranged between first and second charge transfer transistors that are adjacent to one another within the plurality of charge transfer transistors;a first capacitor having a first plate terminal coupled to the first charge transfer node and having a second plate terminal operably coupled to a first clock ...

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Номер записи: 45
05-12-2013 дата публикации

CHARGE PUMP CIRCUIT

Номер: US20130321069A1
Автор: KIHARA Hideyuki, YAJIMA Hiroshi
Принадлежит:

A charge pump circuit includes a clock signal input terminal to receive a clock signal; an inverted clock signal input terminal to receive an inverted clock signal having a phase obtained by reversing a phase of the clock signal; an output terminal for outputting an output voltage, the output voltage being generated by boosting the clock signal and the inverted clock signal; and a pump circuit including a plurality of rectifying circuits connected in series and located between the output terminal and a ground terminal and a plurality of capacitative elements respectively having first terminals respectively connected to anodes of the plurality of rectifying circuits, a second terminal of a last-stage capacitative element located on the output terminal side, the clock signal input terminal and the inverted clock signal input terminal being alternately connected to second terminals of the capacitative elements other than the last-stage capacitative element. 1. A charge pump circuit comprising:a clock signal input terminal to which a clock signal having a predetermined amplitude is input;an inverted clock signal input terminal to which an inverted clock signal having the predetermined amplitude and a phase obtained by reversing a phase of the clock signal is input;an output terminal from which an output voltage is output, the output voltage being generated by boosting the clock signal and the inverted clock signal in accordance with the predetermined amplitude; anda pump circuit including a plurality of rectifying circuits connected in series so as to be located between the output terminal and a ground terminal and a plurality of capacitative elements respectively having first terminals respectively connected to anodes of the plurality of rectifying circuits, a second terminal of a last-stage capacitative element located on the output terminal side among the plurality of capacitative elements being maintained at a ground potential, the clock signal input terminal and ...

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Номер записи: 46
05-12-2013 дата публикации

Semiconductor memory device, and method of controlling the same

Номер: US20130326247A1
Автор: Koichi Nishimura, Kotoku Sato, Shinya Fujioka, Tomohiro Kawakubo
Принадлежит: Fujitsu Semiconductor Ltd

A semiconductor device includes a memory core with a plurality of memory cells, an internal voltage generator and a low power entry circuit. The low power entry circuit receives a plurality of control signals which are provided to a command decoder, and generates a low power signal indicating a low power consumption mode where a refresh operation is prohibited. The internal voltage generator includes a detector and at least one of booster circuits. The internal voltage generator, coupled to the memory core via an internal power supply line, generates a boosted internal voltage based on an external voltage and supplies the boosted internal voltage to the memory core via the internal power supply line. The internal voltage generator stops supplying the boosted internal voltage to the internal power supply line in response to the low power signal while the external voltage is supplied to the semiconductor device.

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Номер записи: 47
26-12-2013 дата публикации

VOLTAGE REGULATOR CIRCUITRY AND DEVICES

Номер: US20130342180A1
Автор: YANG JOSH, Yang Michael, YU EDWARD, ZHENG Xiao, Zhou Shicong
Принадлежит: SEMICONDUCTOR MANUFACTURING INTERNATIONAL CORP.

Various embodiments provide voltage regulator circuitry and devices. An exemplary voltage regulator circuitry can include a current comparing unit configured to convert an output voltage from a charge pump to a current and to compare the current with at least two different reference currents to generate a comparison result. A logic controller can be configured to generate a clock frequency adjustment signal based on the comparison result. A programmable clock unit can be configured to adjust a frequency of a clock signal according to the clock frequency adjustment signal to send the clock signal to the charge pump. Accordingly, the disclosed voltage regulator device can have reduced power consumption and improved reliability. 1. A voltage regulator device , comprising:a current comparing unit configured to convert an output voltage from a charge pump to a current and to compare the current with a first reference current and a second reference current, different from the first reference current, to generate a comparison result;a logic controller connected to the current comparing unit and configured to generate a clock frequency adjustment signal based on the comparison result; anda programmable clock unit connected to the logic controller to receive the clock frequency adjustment signal and connected to the charge pump, and configured to adjust a frequency of a clock signal according to the clock frequency adjustment signal and to send the clock signal to the charge pump to control the output voltage of the charge pump.2. The device of claim 1 , wherein the current comparing unit claim 1 , the logic controller claim 1 , and the programmable clock unit forms a feedback loop connected to the charge pump.3. The device of claim 1 , wherein the current comparing unit includes a current obtaining unit and a comparing unit.4. The device of claim 3 , wherein the current obtaining unit is electrically connected to an output terminal of the charge pump and configured to ...

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Номер записи: 48
09-01-2014 дата публикации

REGULATED CHARGE PUMP CIRCUIT

Номер: US20140009220A1
Автор: Ding Jackson, Jiang Ming
Принадлежит:

A circuit includes a charge pump, a first level shifter, a second level shifter, a voltage follower and a current mirror. The charge pump is configured to generate a voltage difference between the input node and the output node. The first level shifter is coupled to the charge pump output and configured to apply a first voltage variation to the charge pump output in response to a bias current. The second level shifter is coupled to the input node and configured to apply a second voltage variation to the charge pump input. The voltage follower is configured to equalize outputs from the first and second level shifters and provide a difference current which is multiplied by the current multiplier to generate a charging current applied to the charge pump. 1. A circuit , comprising:a charge pump having an input node for receiving an input voltage, a supply node for receiving a charging current and an output node for outputting an output voltage, wherein the charge pump is configured to generate a voltage difference between the input node and the output node;a first level shifter having a first node coupled to the output node and a second node, the first level shifter being configured to apply a first voltage variation to the output voltage in response to a bias current received from a current source;a second level shifter having a third node coupled to the input node and a fourth node, the second level shifter being configured to apply a second voltage variation to the input voltage;a voltage follower configured to set the voltage at the second node substantially equal to the voltage at the fourth node, to receive a difference current flowing through the second level shifter and to provide the difference current;a current multiplier configured to generate the charging current in response to the difference current provided by the voltage follower.2. The circuit as claimed in claim 1 , wherein the first level shifter comprises a first resistor claim 1 , and the bias ...

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Номер записи: 49
23-01-2014 дата публикации

SWITCH CIRCUIT AND CHARGE PUMP USING THE SAME THEREOF

Номер: US20140022006A1
Автор: Chen Ya-Chi, Lin Lai-Ching, Tung Chun-Chao
Принадлежит: Alpha Imaging Technology Corp.

The switch circuit comprises a first switch, a second switch, a third switch, a forth switch, a fifth switch, a sixth switch and a seventh switch. The first switch couples the voltage input terminal to one terminal of a flying capacitor. The second switch couples one terminal of the flying capacitor to one terminal of the output capacitor. The third switch couples one terminal of the flying capacitor to a common terminal. The fourth switch couples the other terminal of the flying capacitor to one terminal of the output capacitor. The fifth switch couples one terminal of the output capacitor to a positive voltage output terminal. The sixth switch couples the other terminal of the flying capacitor to the common terminal. The seventh switch couples the other terminal of the flying capacitor to a negative voltage output terminal. 1. A charge pump , comprising:a voltage input terminal used for receiving an input voltage;a common terminal;a positive voltage output terminal;a negative voltage output terminal; and a first switch used for coupling the voltage input terminal to one terminal of a flying capacitor;', 'a second switch used for coupling one terminal of the flying capacitor to one terminal of the output capacitor;', 'a third switch used for coupling one terminal of the flying capacitor to a common terminal;', 'a fourth switch used for coupling the other terminal of the flying capacitor to one terminal of the output capacitor;', 'a fifth switch used for coupling the one terminal of the output capacitor the positive voltage output terminal;', 'a sixth switch used for coupling the other terminal of the flying capacitor to the common terminal; and', 'a seventh switch used for coupling the other terminal of the flying capacitor to the negative voltage output terminal., 'a switch circuit, comprising2. The charge pump according to claim 1 , further comprising:a first energy storage capacitor, wherein one terminal of the first energy storage capacitor is coupled to the ...

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Номер записи: 50
27-02-2014 дата публикации

Low Noise Charge Pump Method and Apparatus

Номер: US20140055194A1
Автор: Burgener Mark L., Cable James S., Kelly Dylan J.
Принадлежит: PEREGRINE SEMICONDUCTOR CORPORATION

A charge pump method and apparatus is described having various aspects. Noise injection from a charge pump to other circuits may be reduced by limiting both positive and negative clock transition rates, as well as by limiting drive currents within clock generator driver circuits, and also by increasing a control node AC impedance of certain transfer capacitor coupling switches. A single-phase clock may be used to control as many as all active switches within a charge pump, and capacitive coupling may simplify biasing and timing for clock signals controlling transfer capacitor coupling switches. Any combination of such aspects of the method or apparatus may be employed to quiet and/or simplify charge pump designs over a wide range of charge pump architectures. 1a) a transfer capacitor;b) a plurality of transfer capacitor coupling switches, each switchable between a conducting state and a nonconducting state under control of at least one charge pump clock output; and i) circuitry configured as an active current limit to limit a rate of rise of voltage at the driver section output, and', 'ii) circuitry configured as an active current limit to limit a rate of fall of voltage at the driver section output;, 'c) a charge pump clock generating circuit including a ring oscillator comprising an odd number of not more than three inverting driver sections cascaded sequentially in a ring such that each driver section has an output coupled to a next driver section input, wherein a first driver section is next after a last driver section and one of the driver section outputs constitutes a particular charge pump clock output controlling at least one of the transfer capacitor coupling switches, and wherein each driver section includes'}d) wherein the plurality of transfer capacitor coupling switches are coupled to the transfer capacitor, and are controlled so as to couple the transfer capacitor to a voltage source during periodic first times, and to couple the transfer capacitor to ...

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Номер записи: 51
27-02-2014 дата публикации

Power management architecture for modulated and constant supply operation

Номер: US20140055197A1
Автор: Christopher Truong Ngo, Michael R. Kay, Nadim Khlat, Phillippe Gorisse
Принадлежит: RF Micro Devices Inc

A power management system, which includes a parallel amplifier circuit and a switch mode power supply converter, is disclosed. The switch mode power supply converter cooperatively operates with the parallel amplifier circuit to form the power management system. The power management system operates in one of a high power modulation mode, a medium power modulation mode, and a low power average power tracking mode. Further, during the high power modulation mode and the medium power modulation mode, the power management system controls a power amplifier supply voltage to a radio frequency power amplifier to provide envelope tracking. During the low power average power tracking mode, the power management system controls the power amplifier supply voltage to the radio frequency power amplifier to provide average power tracking.

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Номер записи: 52
06-03-2014 дата публикации

Radiation hardened charge pump

Номер: US20140062581A1
Автор: Dean Allum
Принадлежит: Microelectronics Research and Development Corp

This invention relates to radiation hardened charge pumps for electronic circuitry.

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Номер записи: 53
13-03-2014 дата публикации

Voltage regulator and method for regulating dual output voltages by selective connection between a voltage supply and multiple capacitances

Номер: US20140071721A1
Автор: Ashutosh Verma, Sehat Sutardja, Shafiq M. Jamal, Thomas B. Cho
Принадлежит: MARVELL WORLD TRADE LTD

A voltage regulator including a first, second, and third capacitances, first switches, and second switches. A first terminal of the first capacitance is connected to a first output. The first output is at a first output voltage. A first terminal of the second capacitance is connected to a second output. The second output is at a second output voltage. The first switches connect a first terminal of the third capacitance to a voltage supply, the first output, or the second output. The second switches connect a second terminal of the third capacitance to a reference terminal, the first output, or the second output. The first and second switches are controlled, based on the first output voltage and the second output voltage, to: adjust voltages across the first, second, and third capacitances; maintain the first output at a first predetermined voltage; and maintain the second output at a second predetermined voltage.

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Номер записи: 54
20-03-2014 дата публикации

ADJUSTING APPARATUS AND ADJUSTMENT METHOD

Номер: US20140077783A1
Автор: MATSUNAMI Hiroyuki, SUGAYA Osamu, TANAKA Masahiro, Yamaguchi Osamu
Принадлежит:

An adjusting apparatus sets a designated value of a current source circuit to be a predetermined value, and causes discharging of a capacitor to end by switching a switch to a discharging side when the capacitor is not being charged by current output from a switching power source circuit. After the discharging of the capacitor ends and the designated value is set, the adjusting apparatus causes the capacitor to be charged by switching the switch to a charging side. The adjusting apparatus further measures a time period from the time when the switch is switched to the charging side until an electric potential difference of the capacitor exceeds a threshold value. Based on the measured time period and the predetermined value, the adjusting apparatus calculates the designated value such that the measured time period is a predetermined time period. 1. An adjusting apparatus comprising:a capacitor that is charged by output current output from a switching power source circuit;a current source circuit that generates a current of an amount corresponding to a set designated value, and causes the capacitor to be charged by the generated current;a switch that switches between charging of the capacitor by the current from the current source circuit and discharging of the capacitor;a first setting unit that sets the designated value for the current source circuit to be a predetermined value;first control unit that causes the discharging of the capacitor to end by switching the switch to a discharging side when the capacitor is not charged by the output current;second control unit that causes the capacitor to be charged by switching the switch to a charging side, after the first control unit causes the discharging of the capacitor to end and the first setting unit sets the designated value;a measuring unit that measures a time period from a time when the second control unit switches the switch to the charging side until a time when an electric potential difference of the ...

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Номер записи: 55
27-03-2014 дата публикации

Output ripple voltage control for a capacitive dc/dc converter

Номер: US20140084890A1
Автор: Melanie Philip
Принадлежит: NXP BV

A switching direct current (DC)-to-DC converter includes a charge pump circuit with a flying capacitor ( 104 ) and a switching circuit ( 106 ). The switching circuit ( 106 ) has an ON resistance (R on ) and is configured and arranged to boost an input voltage (V in ) by operating in each of a charging mode (loading) during which charge is provided from the flying capacitor ( 104 ) to an output voltage (V out ) and a discharging mode (storing) during which charge is not provided from the flying capacitor ( 104 ) to the output voltage (V out ). A determination circuit ( 102 ) is configured and arranged to determine a ratio between a discharge rate ( 308 ) and a charge rate ( 310 ). The discharge rate ( 308 ) and the charge rate ( 310 ) both correspond to a rate of change for the output voltage of the switching DC-to-DC converter. An ON resistance circuit ( 102 ) module is configured and arranged to adjust the ON resistance (R on ) of the charging mode (loading) and to change the determined ratio to a target ratio.

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Номер записи: 56
03-04-2014 дата публикации

POWER SUPPLY CIRCUIT

Номер: US20140092656A1
Автор: AIURA Masami
Принадлежит: ASAHI KASEI MICRODEVICES CORPORATION

A power supply circuit is intended to suppress power consumption when a load is not driven and to shorten a required time to be taken until a boosted voltage to be supplied to a high-side MOS transistor is stabilized when the load is changed from a deactivated state to an activated state. 1. A power supply circuit supplying power to a load driving circuit that drives a load by controlling a transistor on the basis of an input load control signal , comprising:a booster circuit configured to boost a voltage of input power and supplies the power of which the voltage is boosted as power for driving the transistor,wherein the booster circuit has power supply capability which varies depending on the load control signal.2. The power supply circuit according to claim 1 , further comprising a power supply capability switching circuit configured to switch the power supply capability of the booster circuit depending on the load control signal.3. The power supply circuit according to claim 2 , wherein the power supply capability switching circuit is configured to switch the power supply capability so as to set the power supply capability to be lower when the load control signal indicates that an amount of power supplied to the load is smaller.4. The power supply circuit according to claim 3 , wherein the power supply capability switching circuit is configured to output a power-supply-capability-switching clock signal having a frequency corresponding to the load control signal claim 3 , andwherein the frequency of the power-supply-capability-switching clock signal is lower when the load control signal indicates that the amount of power supplied to the load is smaller.5. The power supply circuit according to claim 3 , wherein the power supply capability switching circuit is configured to output a first clock signal of which the frequency is a first frequency as the power-supply-capability-switching clock signal when the load control signal indicates that the amount of power ...

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Номер записи: 57
01-01-2015 дата публикации

DIRECT DRIVE LED DRIVER AND OFFLINE CHARGE PUMP AND METHOD THEREFOR

Номер: US20150002035A1
Автор: SCHIE DAVID, WARD MIKE
Принадлежит:

In one embodiment, a Light Emitting Diode (LED) driving device for driving a plurality of LEDs has a switching matrix utilizing a plurality of one of a turn off thyristors or turn off triacs coupled to the plurality of LEDs. A controller is coupled to the switching matrix responsive to a voltage of a rectified AC halfwave, wherein combinations of the plurality of LEDs are altered to ensure a maximum operating voltage of the plurality of LEDs is not exceeded. A current limiting device is coupled to the combinations of the plurality of LED to regulate current. 1. A Light Emitting Diode (LED) driving device for driving a plurality of LEDs comprising:a switching matrix utilizing a plurality of at least one of a turn off thyristors or turn off triacs coupled to the plurality of LEDs;a controller coupled to the switching matrix responsive to a voltage of a rectified AC halfwave, wherein combinations of the plurality of LEDs are altered to ensure a maximum operating voltage of the plurality of LEDs is not exceeded; anda current limiting device coupled to the combinations of the plurality LED to regulate current.2. A Light Emitting Diode (LED) driving device for driving a plurality of LEDs in accordance with further comprising a valley fill power factor correction (PFC) circuit coupled to the switching matrix claim 1 , to draw current in proportionality with the rectified AC half wave.3. A Light Emitting Diode (LED) driving device for driving a plurality of LEDs in accordance with wherein the PFC circuit comprises:a switched capacitor array having a plurality of capacitors, wherein the switched capacitor array uses at least one of turn off thyristors or parallel reverse combinations as switching elements to create a turn off triac connected to at least two of the plurality of capacitors; anda switched capacitor array controller coupled to the switched capacitor array to adjust a voltage of the valley fill PFC circuit by activating and deactivating combinations of the ...

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Номер записи: 58
01-01-2015 дата публикации

Efficient High Voltage Bias Regulation Circuit

Номер: US20150002118A1
Автор: Pan Feng
Принадлежит: SANDISK TECHNOLOGIES INC.

A high voltage DC-DC voltage converted includes a charge pump section and an op-amp section. During ramp-up, the charge pump can drive the load and the op-amp is in a unity gain configuration until the output level reaches the regulation level. While under regulation, when the load current is small and the charge pump is typically inefficient, the charge pump portion can be disconnected from the load and idled, while the op-amp is reconfigures as a comparator to maintain the output. This allows for the pump portion to be optimized for the large currents while the op-amp portion can be used to also have high efficiency during the low current, regulation phase.

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Номер записи: 59
01-01-2015 дата публикации

Differential Charge Pump

Номер: US20150002214A1
Автор: Englekirk Robert Mark
Принадлежит:

A DC-to-DC voltage converter comprising a differential charge pump that utilizes a differential clocking scheme to reduce output electrical noise by partial cancellation of charge pump glitches (voltage transients), and a corresponding method of operating a differential charge pump. The differential charge pump can be characterized as having at least two charge pump sections that initiate charge pumping in opposite phases of a clock signal to transfer (pump) charge to storage capacitors. The differential charge pump is particularly well suited for implementation in integrated circuit chips requiring negative and/or positive voltages, and multiples of such voltages, based on a single input voltage. 1. A differential charge pump , including:(a) a clock signal having a first phase and a second phase, the second phase being different from the first phase, for controlling charge pumping cycles of the differential charge pump; (1) a fly capacitor having an input and an output;', '(2) a first switch coupled between the input of the fly capacitor and an intermediate node, and coupled to and controlled by a selected one of the first phase or the second phase of the clock signal;', '(3) a second switch coupled between the intermediate node and the output of the fly capacitor, and coupled to and controlled by a selected one of the second phase or the first phase of the clock signal, the selected phase controlling the second switch being different from the selected phase controlling the first switch; and, '(b) at least two charge pump sections electrically coupled in parallel to an input voltage source, wherein each charge pump section generates an output voltage comprising a charge-pumped multiple of an input voltage from the input voltage source, each charge pump section including at least one charge multiplying stage having an input and an output, the input of each charge multiplying stage being selectively coupled to an associated input voltage source and the output of each ...

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Номер записи: 60
02-01-2020 дата публикации

TESTING SWITCHES IN A POWER CONVERTER

Номер: US20200003823A1
Автор: Szczeszynski Gregory, Zanchi Brian
Принадлежит:

A switching network includes a switch, a driver for the switch, and a floating-regulator that powers the driver. The floating-regulator includes a shunt that is used only when testing the network. The shunt diverts biasing current so that it does not interfere with a measurement of an electrical property of a switch. 1. An apparatus comprising a switching network that , when connected to capacitors , forms a switched-capacitor network for transforming a first voltage into a second voltage , wherein said switching network comprises a switch , a driver , and a floating-regulator , wherein said floating-regulator comprises a first current path and a second current path , wherein current that proceeds along said first current path drives said switch , wherein current that proceeds along said second path is diverted such that said current fails to provide power for driving any switch , and wherein said floating-regulator comprises a shunt for causing said current to proceed along one of said first and second paths.2. The apparatus of claim 1 , further comprising a controller that is configured for causing said shunt to select said second path.3. The apparatus of claim 1 , wherein claim 1 , during operation claim 1 , said switching network comprises a node of lower electrical potential claim 1 , wherein said node of lower electrical potential has an electrical potential that is lower than all other electric potentials in said switching network claim 1 , and wherein said second path leads to said node of lowest electrical potential.4. The apparatus of claim 1 , further comprising a controller configured to determine whether a switch in said switching network has a leakage current that complies with a design specification claim 1 , wherein said controller is configured to cause a bias current in said switch claim 1 , to divert said bias current so that said bias current avoids interfering with measurement of said leakage current claim 1 , to apply a voltage across said ...

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Номер записи: 61
02-01-2020 дата публикации

Thermoelectric watch testable in production or after-sales service

Номер: US20200004209A1
Автор: Alain Jornod, François Gueissaz, Yves Theoduloz
Принадлежит: Swatch Group Research and Development SA

A thermoelectric watch including a thermoelectric generator; a voltage booster connected to the thermoelectric generator; an energy management circuit connected to the voltage booster and configured to control the charging of at least one energy storage element, the energy management circuit including an output configured to change from a first logic state to a second logic state when the thermoelectric generator starts generating electrical energy, and to change from the second logic state to the first logic state when the thermoelectric generator finishes generating electrical energy.

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Номер записи: 62
03-01-2019 дата публикации

Negative power supply control circuit and power supply device

Номер: US20190004558A1
Автор: Kohei Sakurai, Yoichi Takano
Принадлежит: Mitsumi Electric Co Ltd

A negative power supply control circuit which controls a negative voltage regulator circuit based on a positive voltage control signal, the negative power supply control circuit including: a control signal input terminal; a negative voltage input terminal; a negative voltage control signal output terminal; a voltage current conversion circuit; a first current source; and a first clamp circuit, wherein the first clamp circuit clamps a voltage at a first intermediate point between the first clamp circuit and the first current source by limiting a current flowing in the first clamp circuit according to the voltage at the first intermediate point in a period when a current flows in the voltage current conversion circuit, and the negative voltage control signal is generated based on a voltage or a current in a current path through the voltage current conversion circuit, the first clamp circuit and the first current source.

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Номер записи: 63
07-01-2016 дата публикации

CHARGE PUMP SYSTEM AND ASSOCIATED CONTROL METHOD FOR MEMORY CELL ARRAY

Номер: US20160005441A1
Автор: YANG Cheng-Te
Принадлежит:

A charge pump system includes a logic circuit, a signal processing circuit, a charge pump circuit, a switching circuit, a first controllable discharge path, and a second controllable discharge path. The logic circuit receives a program enabling signal and generates a first control signal. The signal processing circuit receives a pump enabling signal, and generates a second control signal and a third control signal. The charge pump circuit receives the third control signal and generates an output signal. The switching circuit has a control terminal receiving the third control signal, a first terminal connected with the output terminal of the charge pump circuit, and a second terminal connected with a reservoir capacitor. The first controllable discharge path receives the first control signal, and the second controllable discharge path receives the second control signal. 1. A charge pump system connected with a memory cell array and a reservoir capacitor , the charge pump system comprising:a logic circuit receiving a program enabling signal, wherein the logic circuit generates a first control signal according to a program cycle corresponding to the program enabling signal;a signal processing circuit receiving a pump enabling signal, and generating a second control signal and a third control signal, wherein the second control signal is activated by the signal processing circuit during a disabling period of the third control signal;a charge pump circuit, wherein an enabling terminal of the charge pump circuit receives the third control signal, and an output terminal of the charge pump circuit generates an output signal, wherein the output terminal of the charge pump circuit is connected with the memory cell array;a switching circuit, wherein a control terminal of the switching circuit receives the third control signal, a first terminal of the switching circuit is connected with the output terminal of the charge pump circuit, and a second terminal of the switching ...

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Номер записи: 64
05-01-2017 дата публикации

Wearable device having flexible battery

Номер: US20170005504A1
Автор: Ji Hyun Nam, Seung Yun RHO, Won Gil CHOI
Принадлежит: Amogreentech Co Ltd

Provided is a wearable device having a flexible battery, and the wearable device includes: a functional unit; a band unit that fixes the functional unit to a wrist of a user; and a thin plate flexible battery that is embedded in the band unit and supplies power to the functional unit.

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Номер записи: 65
13-01-2022 дата публикации

CONVERSION CIRCUIT TOPOLOGY

Номер: US20220014086A1
Автор: BAO Huayao, FU Zhiheng, XIN Xiaoni, YE Haoyi, YE Yiqing, Zhou Yuan
Принадлежит:

The invention provides a conversion circuit for converting input voltage into output voltage, including: a full-wave rectifier circuit including first and second branches connected in parallel, and each including a secondary winding and a rectifier switch; a first switch branch connected to midpoint of the first branch, and including first to fourth switches connected in series; a first resonant unit connected between connection node of the first and second switches and midpoint of the second branch; a second resonant unit connected between connection node of the third and fourth switches and midpoint of the second branch; a first primary winding connected in series to the first resonant unit; and a capacitor connected between connection node of the second and third switches and midpoint of the second branch. The conversion circuit of the invention improves conversion efficiency while maintaining smaller voltage stress on switches. 1. A conversion circuit for supplying an output voltage after converting an input voltage , wherein the input voltage and the output voltage both comprise a first end and a second end , and the second end of the input voltage is connected to the second end of the output voltage , the conversion circuit comprising:a full-wave rectifier circuit comprising a first branch and a second branch connected in parallel between the first end and the second end of the output voltage, the first branch comprising a first secondary winding of a transformer and a first rectifier switch connected in series to form a first midpoint, and the second branch comprising a second secondary winding of the transformer and a second rectifier switch connected in series to form a second midpoint;a first switch branch connected between the first end of the input voltage and the first midpoint, and comprising a first switch, a second switch, a third switch and a fourth switch connected in series, wherein the first switch and the second switch are connected to form a ...

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Номер записи: 66
13-01-2022 дата публикации

Power Converter with Multi-Level Topology

Номер: US20220014091A1
Автор: Giuliano David M., Low Aichen
Принадлежит:

A power converter including a multi-level topology is presented. The power converter includes a charge pump, a controller, an output load and an inductor. According to one aspect, the charge pump includes a multi-level topology. According to another aspect, the power converter includes a switch which is connected across the inductor. According to another aspect, the multi-level topology includes a plurality of series-connected switches that are controlled to close or open via the controller. The switches are arranged in a high-side or low-side switchable path of the multi-level topology. During operation in a first state, only one switch of the high-side is closed, during operation in a second state, at least one of the switches in the low-side is open, and during a transition from the first to the second state, all of the switches in the low-side are open. 1. A power converter , comprising:a charge pump comprising a multi-level topology;an inductor having a first terminal and a second terminal, the first terminal connected to an output node of the charge pump and the second terminal configured to be connected to an output load; anda switch element connected across the inductor, a first stage comprising: a first stack-switch coupled between the output node and a first stack-node; and a first pump-capacitor;', 'a second stage comprising: a second stack-switch coupled between the first stack-node and a second stack-node; and a second pump-capacitor; and', 'a third stage comprising a third stack-switch coupled between the second stack-node and an input node of the charge pump., 'wherein the multi-level topology comprises a high-side switching path comprising2. The power converter of claim 1 , wherein the multi-level topology further comprises a low-side switching path comprising:a first phase-switch coupled between the output node and a first phase-node, the first pump-capacitor coupled between the first stack-node and the first phase-node;a second phase-switch coupled ...

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Номер записи: 67
05-01-2017 дата публикации

RF EMISSION SPECTRUM RANDOMIZATION AND TARGETED NULLING FOR AN ELECTRONIC DEVICE

Номер: US20170005572A1
Автор: LI Zheming, LO Steve Chikin
Принадлежит:

In an example, a processing system for an electronic device, such as a capacitive sensing device, includes a reservoir capacitor configured to store charge from a charge pump, and a control circuit configured to operate the charge pump at irregular intervals to transfer charge to the reservoir capacitor. 1. A processing system for a capacitive sensing device , comprising:a reservoir capacitor configured to store charge from a charge pump; anda control circuit configured to operate the charge pump at irregular intervals to transfer charge to the reservoir capacitor.2. The processing system of claim 1 , wherein the irregular intervals comprise partially-random claim 1 , pseudorandom or random intervals.3. The processing system of claim 2 , wherein the irregular intervals are configured to reduce the peaks in a radio frequency (RF) emission spectrum of the charge pump.4. The processing system of claim 1 , wherein the control circuit operates the charge pump at the irregular intervals based on locally repeated bit patterns.5. The processing system of claim 4 , wherein the irregular intervals are configured to introduce one or more nulls in radio frequency (RF) emission spectrum from the charge pump at a respective one or more frequencies.6. The processing system of claim 1 , wherein the control circuit operates the charge pump at the irregular intervals based on a pseudorandom (PN) code.7. The processing system of claim 6 , wherein the irregular intervals are configured to introduce one or more nulls in radio frequency (RF) emission spectrum from the charge pump at a respective one or more frequencies.8. The processing system of claim 6 , wherein the PN code comprises groups of bits of a pseudorandom or random bit stream claim 6 , where each of the groups is repeated consecutively once or more in the PN code.9. An input device for capacitive sensing claim 6 , comprising:sensing circuitry configured for coupling to sensor electrodes;a voltage supply coupled to the ...

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Номер записи: 68
05-01-2017 дата публикации

SYSTEM AND METHOD FOR PREVENTING UNDESIRABLE SUBSTANTIALLY CONCURRENT SWITCHING IN MULTIPLE POWER CIRCUITS

Номер: US20170005573A1
Автор: AGNESS JOHN R., LAIRD WILLIAM K., UNG HENRY S.
Принадлежит:

A power system includes a first charge pump configured to supply power, and control circuitry coupled to the first charge pump. The control circuitry is operable to receive a signal indicating whether a second change pump is turning on. If the first charge pump is about to be turned on and the signal indicates that the second charge pump is turning on, the control circuitry is operable to prevent an output, of first charge pump from substantially aligning with an output of the second charge pump. 1. A power system comprising:a first charge pump configured to supply power; receive a signal indicating whether a second charge pump is turning on; and', 'if the first charge pump is about to be turned on and the signal indicates that the second charge pump is turning on, prevent an output of first charge pump from substantially aligning with an output of the second charge pump., 'control circuitry coupled to the first charge pump, the control circuitry operable to2. The power system as recited in claim 1 , wherein the control circuitry is operable to prevent the output of first charge pump from substantially aligning with the output of the second charge pump by delaying the turning on of the first charge pump by a predetermined amount of time3. The power system as recited in claim 1 , wherein the control circuitry is operable to prevent the output of first charge pump from substantially aligning with the output of the second charge pump by causing the output of the first charge pump to be out of phase with the output of the second charge pump.4. The power system as recited in claim 1 , wherein the control circuitry is operable to cause the output of the first charge pump to be out of phase with the output of the second charge pump by phase shifting the output of the first charge pump by a predetermined amount of phase with respect to the output of the second charge pump.5. The power system as recited in claim 1 , further comprising sense logic coupled between the second ...

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Номер записи: 69
07-01-2016 дата публикации

WEARABLE ELECTRONIC DEVICE

Номер: US20160006201A1
Автор: Kim Ju-Yong
Принадлежит:

Disclosed is a wearable electronic device including a movable connection terminal that is set back from an opening of a body housing when no external device is connected, and moves towards the opening when the external device approaches. The electronic device includes a body; a connection terminal located inside the body and provided to be movable from the inside towards a surface of the body; and a movable part coupled to or integrated with the connection terminal. The movable part may move the connection terminal towards the surface when a magnet of the external device approaches. 1. A wearable electronic device comprising:a body;a connection terminal located inside the body; anda movable part coupled to or integrated with the connection terminal and configured to move the connection terminal from the inside towards a surface of the body.2. An electronic device comprising:a body having an opening;a circuit board provided inside the body;a connection terminal located inside the body, electrically connected to the circuit board, and configured to be moved from inside the body to the opening; anda movable part coupled to or integrated with the connection terminal and configured to move the connection terminal from inside the body to the opening.3. The electronic device of claim 2 , further comprising a movable connection board provided between the connection terminal and the circuit board claim 2 , configured to electrically connect the connection terminal and the circuit board claim 2 , the connection board being moved as the connection terminal is moved.4. The electronic device of claim 3 , wherein the connection board comprises:at least one first board part; anda flexible second board part electrically connected to the first board part and configured to move the first board part between the circuit board and the connection terminal.5. The electronic device of claim 2 , further comprising a first member provided inside the body and configured to attach to the ...

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Номер записи: 70
07-01-2016 дата публикации

CHARGE PUMP APPARATUS

Номер: US20160006348A1
Автор: Chang Wu-Chang, Ho Hsin-Liang
Принадлежит:

The invention provides a charge pump apparatus including a clock signal generator, a clock freezing circuit, a charge pump circuit, and a feedback circuit. The clock signal generator generates a clock signal. The clock freezing circuit directly receives the clock signal and an enable signal. The clock freezing circuit decides whether to pass or latch a voltage level of the clock signal according to the enable signal to generate a controlled clock signal. The charge pump circuit directly receives the controlled clock signal and operates a charge pump operation on an input voltage to generate a pumping voltage. 1. A charge pump apparatus , comprising:a clock signal generator, generating a clock signal;a clock freezing circuit, coupled to the clock signal generator, directly receiving the clock signal and an enable signal, and deciding whether to pass a voltage level of the clock signal or not according to the enable signal for generating a controlled clock signal;a charge pump circuit, coupled to the clock freezing circuit, directly receiving the controlled clock signal and operating a charge pump operation on an input voltage to generate a pumping voltage; anda feedback circuit, coupled to the charge pump circuit and the clock freezing circuit, wherein the feedback circuit compares the pumping voltage and a preset target voltage to generate the enable signal.2. The charge pump apparatus as claimed in claim 1 , wherein the feedback circuit generates the enable signal with a first logic level when the pumping voltage is lower than the preset target voltage claim 1 , and the feedback circuit generates the enable signal with a second logic level when the pumping voltage is higher than the preset target voltage claim 1 ,wherein the first logic level and the second logic level are complementary.3. The charge pump apparatus as claimed in claim 2 , wherein the clock freezing circuit passes the voltage level of the clock signal to generate the controlled clock signal when the ...

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Номер записи: 71
07-01-2016 дата публикации

FOUR-PHASE CHARGE PUMP CIRCUIT

Номер: US20160006349A1
Автор: Chang Wu-Chang
Принадлежит:

A four-phase charge pump circuit including an output stage and multiple boosting stages is provided. The multiple boosting stages are coupled to the output stage in series, and each of the multiple boosting stages is driven by four-phase clock signals. The output stage is driven by two clock signals of the four-phase clock signals and outputs a positive boosted voltage, and thereby the four-phase charge pump circuit is a positive charge pump circuit. Each of the boosting stages includes two branch charge pumps, and each of the two branch charge pumps includes a main pass transistor and a pre-charge transistor. The main pass transistors and the pre-charge transistors of the boosting stages are disposed on an identical deep doped region. 1. A four-phase charge pump circuit comprising: a main pass transistor having a body, a gate terminal, a source terminal as a first node of the branch charge pump and a drain terminal as a second node of the branch charge pump, wherein the first node and the second node of the branch charge pump connect respectively to a front boosting stage and a rear boosting stage of the boosting stages; and', 'a pre-charge transistor having a gate terminal, a source terminal and a drain terminal, wherein the source terminal and the drain terminal of the pre-charge transistor are respectively coupled to the gate terminal of the main transistor and the first node of the branch charge pump, and the gate terminal of the pre-charge transistor is coupled to the second node of the branch charge pump,, 'multiple boosting stages driven by four-phase clock signals, wherein each of the boosting stages comprises two branch charge pumps, and each of the two branch charge pumps compriseswherein the main pass transistors and the pre-charge transistors of the boosting stages are disposed on an identical deep doped region.2. The four-phase charge pump circuit as claimed in claim 1 , wherein each of the two branch charge pumps further comprises:two capacitors ...

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Номер записи: 72
02-01-2020 дата публикации

Thin Film Inductor, Power Conversion Circuit, and Chip

Номер: US20200005985A1
Автор: Heqian YANG, Shijun Yang, Wei Chen, Yongfa Zhu
Принадлежит: Huawei Technologies Co Ltd

A thin film inductor includes a first magnetic thin film and a second magnetic thin film that are adjacent, the first magnetic thin film is nested in the second magnetic thin film, and a relative magnetic permeability of the first magnetic thin film is less than a relative magnetic permeability of the second magnetic thin film, and a difference between the relative magnetic permeability of the first magnetic thin film and the relative magnetic permeability of the second magnetic thin film is greater than or equal to a first threshold, where when a magnetic induction intensity of the second magnetic thin film reaches a saturated magnetic induction intensity of the second magnetic thin film, a magnetic induction intensity of the first magnetic thin film is less than or equal to a saturated magnetic induction intensity of the first magnetic thin film.

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Номер записи: 73
07-01-2021 дата публикации

Liquid Powered Assembly

Номер: US20210005873A1
Автор: BEDOL MARK A., Scott Kohar
Принадлежит:

A liquid powered assembly including a housing; a removable bottom base; a seal; an electrolyte battery assembly; and, a liquid powered device is described. The housing includes an upper end portion and a lower end portion. The housing has a volume for containing an electrolyte solution. The lower end portion has a fluid inlet. The removable bottom base has a bottom surface for supporting the liquid powered assembly. A seal engages the housing and the removable bottom base to help contain the liquid. An electrolyte battery assembly is positioned within the housing. A liquid powered device is operably attached to the electrolyte battery assembly. To function, the housing and the removable bottom base are detached relative to each other and the housing is turned substantially upside down to allow filling of the housing via the inlet. The bottom base is then attached to the housing and the assembly is then inverted for use. 1. A liquid powered assembly , comprising: a housing , having an upper end portion and a lower end portion , said housing having a volume therein for containing an electrolyte solution , said lower end portion having a fluid inlet; a removable bottom base removably attached to said lower end portion of said housing , said removable bottom base having a bottom surface for supporting said liquid powered assembly , a stem of said lower end portion of said housing threading into said removable bottom base; wherein said housing sits atop said base; a seal for engaging said housing and said removable bottom base for providing fluidic sealing engagement there between at said fluid inlet , said seal being positioned under said housing and above said removable bottom base; an electrolyte battery assembly positioned within said housing , said electrolyte battery assembly having two or more sets of metal rods disposed centrally within said housing; a divider , said divider disposed centrally within said housing approaching a top of said upper end portion; ...

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Номер записи: 74
04-01-2018 дата публикации

Power conversion device

Номер: US20180006552A1
Автор: Eduardo-Jose Alarcon-Cot, Julia Delos Ayllon, Machiel Antonius Martinus Hendrix, Toni LOPÉZ
Принадлежит: Koninklijke Philips NV, Philips Lighting Holding BV

Power conversion device for supplying a load with a PWM signal, comprising an inductive filter having at least an output configured to be connected to the load, the device comprising: a power conversion module supplied by an input voltage and configured for providing a plurality of output signals wherein one of the plurality of output signals is supplied to the filter; a conversion ratio control stage coupled to the power conversion module; and a controller configured to: determine a requested conversion ratio based on the input voltage and a target reference voltage; and based on the requested conversion ratio, control the conversion ratio control stage to operate in either a first operating mode, whereby the power conversion module provides the output signals in accordance with a first conversion ratio, or a second operating mode, whereby the power conversion module provides the output signals in accordance with a second conversion ratio.

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Номер записи: 75
04-01-2018 дата публикации

Impedance Circuit for a Charge Pump Arrangement and Charge Pump Arrangement

Номер: US20180006553A1
Автор: HANZLIK Tomasz, Rocca Gino, Sassene Daifi Haoues
Принадлежит:

An impedance circuit for a charge pump arrangement and a charge pump arrangement are disclosed. In an embodiment, the impedance circuit includes a first current mirror circuit with a first bias serving as a current input terminal, a first output serving as a current output terminal and a first input for coupling with a pre-selected potential. The impedance circuit further includes a first charge pump for biasing the first current mirror circuit with a first reference current, wherein the first charge pump includes a first biasing output coupled with the first bias of the first current mirror circuit. 111-. (canceled)12. An impedance circuit for a charge pump arrangement , the impedance circuit comprising:a first current mirror circuit with a first bias serving as a current input terminal, a first output serving as a current output terminal and a first input for coupling with a pre-selected potential;a first charge pump for biasing the first current mirror circuit with a first reference current, wherein the first charge pump comprises a first biasing output coupled with the first bias of the first current mirror circuit;a second current mirror circuit with a second bias serving as a current input terminal, a second output serving as a current output terminal and a second input for coupling with the pre-selected potential; anda second charge pump for biasing the second current mirror circuit with a second reference current, wherein the second charge pump comprises a second biasing output coupled with the second bias of the second current mirror circuit.13. The impedance circuit according to claim 12 , wherein the first charge pump is configured to provide the first reference current with an absolute value equal to or smaller than 1 nA for biasing the first current mirror circuit.14. The impedance circuit according to claim 12 , wherein the second charge pump is configured to provide the second reference current with an absolute value equal to or smaller than 1 nA for ...

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Номер записи: 76
04-01-2018 дата публикации

CHARGE PUMP TIMING CONTROL

Номер: US20180006554A1
Автор: Barrett, Giuliano David M., JR. Raymond, Summit Jeffrey, Szczeszynski Gregory
Принадлежит:

Cycle timing of a charge pump is adapted according to monitoring of operating characteristics of a charge pump and/or peripheral elements coupled to the charge pump. In some examples, this adaptation provides maximum or near maximum cycle times while avoiding violation of predefine constraints (e.g., operating limits) in the charge pump and/or peripheral elements. 114-. (canceled)15. An apparatus comprising a charge pump having switch elements that are arranged to operate in a cycle from a plurality of cycles , each of which is associated with a different configuration of said switch elements , said switch elements being configured to switch according to a timing pattern and to provide charge-transfer paths between capacitive elements , and a controller , coupled to said charge pump , said controller comprising an output that provides a signal that selects a cycle from said plurality of cycles and a first sensor-input that accepts a sensor signal that characterizes operation of at least one of said charge pump and a peripheral circuit coupled to said charge pump , said controller being configured to adjust said timing pattern based at least in part on variation of said first sensor-input during operation of said charge pump.16. The apparatus of claim 15 , wherein said first sensor-input receives claim 15 , from a regulator that is coupled to an output of said charge pump claim 15 , a signal indicative of an output voltage of said regulator.17. The apparatus of claim 15 , wherein a converter that carries out switching operation according to a duty cycle is coupled to an output of said charge pump and wherein said first sensor-input is configured to receive a signal from said converter claim 15 , said signal being indicative of said duty cycle.18. The apparatus of claim 15 , wherein said controller is configured to adjust said timing pattern by determining a switching time claim 15 , wherein said switching time determines an end to a cycle claim 15 , wherein said ...

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Номер записи: 77
04-01-2018 дата публикации

Methods and Apparatus for Continuous Current Limiting for FETS in High Inductive Load Systems

Номер: US20180006643A1
Автор: Aras Sualp, Rahman Abidur, SCHULMEYER Kyle
Принадлежит:

An apparatus includes a FET device having a drain terminal, source terminal and a gate terminal; a first supply voltage coupled to the drain terminal of the FET; an output terminal coupled to the source terminal of the FET; a bias current supply coupled to the gate terminal of the FET; a second supply voltage coupled to the gate terminal of the FET; a current sensing circuit coupled to output a sense current proportional to the current flowing through the FET; a current limit comparator coupled to the sense current and comparing the sense current to a predetermined limit current; a pull down current circuit coupled to remove current from the gate terminal of the FET; a current time derivative circuit coupled to the sense current and outputting a sense rate current; and a circuit coupled to receive the sense rate current and coupled to the bias current supply. 1. An apparatus , comprising:an FET having a drain terminal, a source terminal and a gate terminal;a first supply voltage coupled to supply current to a current conduction path between the source terminal and the drain terminal of the FET;an output terminal coupled to receive current flowing through the current conduction path of the FET;a bias current supply coupled to the gate terminal of the FET;a second supply voltage coupled to the gate terminal of the FET;a current sensing circuit coupled to output a sense current proportional to the current flowing through the FET;a current limit comparator coupled to the sense current and comparing the sense current to a predetermined limit current;a pull down current circuit coupled to the current limit comparator and coupled to remove current from the gate terminal of the FET;a current time derivative circuit coupled to the sense current and outputting a sense rate current; anda circuit coupled to receive the sense rate current and coupled to the bias current supply.2. The apparatus of claim 1 , and further including an enable output coupled from the current limit ...

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Номер записи: 78
07-01-2021 дата публикации

START-UP OF STEP-UP POWER CONVERTER WITH SWITCHED-CAPACITOR NETWORK

Номер: US20210006156A1
Автор: Blyde Oscar, Low Aichen, Szczeszynski Gregory
Принадлежит:

A step-up power-converter has stack nodes, each of which connects to a stack switch and to a pump capacitor to form a switched-capacitor network. Among the stack nodes are first and second stack-nodes. The second stack-node drives a particular stack switch from the plurality of stack switches. When all of the stack switches are open, the first voltage causes the first stack-node to have a first stack-node voltage and causes the second stack-node to have a second stack-node voltage that is less than the first stack-node voltage. During the first state, the second stack-node voltage is insufficient to drive the particular stack-switch. During the second state, the second stack-node voltage is sufficient to drive the particular stack-switch. Causing the switched-capacitor network to transition from the first state to the second state includes, among other things, causing the second stack-node voltage to become sufficient to drive the particular stack-switch. 118-. (canceled)19. A step-up power converter comprising:a clock to generate a clock signal;a switched capacitor arrangement comprising a first terminal having a first voltage and a second terminal having a second voltage, the switched capacitor arrangement to include a plurality of pump capacitors to be coupled to a plurality of stack switches via a corresponding plurality of stack nodes;a bypass array to be arranged in a configuration with the switched capacitor arrangement to form one or more bypass paths between at least the first terminal and one or more of the corresponding plurality of stack nodes, the one or more bypass paths to be formed to pre-charge at least one pump capacitor of the plurality of pump capacitors during start-up of the step-up power converter; anda controller to generate one or more control signals based, at least in part, on the clock signal to control the plurality of stack switches to facilitate one or more state transitions between a first and a second operating states of the switched ...

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Номер записи: 79
07-01-2021 дата публикации

Protection of switched capacitor power converter

Номер: US20210006157A1
Автор: Aichen Low, David M. Giuliano, Gregory Szczeszynski, Jeff Summit, Oscar Blyde
Принадлежит: PSemi Corp

Various embodiments of a fault detector for a voltage converter are described. In one example embodiment, briefly. the fault detector is capable to detect one or more fault events during operation of a voltage converter. Likewise, the fault detector is capable to generate one or more fault signals with respect to the one or more to be detected fault events. The one or more fault signals, in the example embodiment, to signal a disconnect switch of the voltage converter to electrically disconnect or otherwise via a high impedance state to limit current flow through at least one switch of a set of switches of the voltage converter. In another example embodiment, the fault detector, responsive to the one or more fault signals, capable to generate a bus interrupt signal on a pin out, such as of an integrated circuit (IC) for use with the voltage converter, or capable to toggle a fault indicator pin out of the IC. Other additional embodiments are also described.

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Номер записи: 80
07-01-2021 дата публикации

CIRCUIT, CORRESPONDING MULTI-PHASE CONVERTER DEVICE AND METHOD OF OPERATION

Номер: US20210006163A1
Автор: Cattani Alberto
Принадлежит: STMICROELECTRONICS S.R.L.

A first switch couples an input node receiving a main control signal for a main switching stage of a multi-phase converter to an output node delivering a secondary control signal for a secondary switching stage following actuation of the secondary switching stage. A second switch couples the output node to a capacitor during a time period of actuation/deactuation of the secondary switching stage. Current is sourced to the capacitor during the actuation time period or sunk from the capacitor during the deactuation time period. The sourced or sunk current may be generated proportional to the main control signal. 1. A control circuit configured to control operation of a multi-phase converter device which includes a main switching stage and a secondary switching stage , the control circuit comprising:an input node configured to receive a main control signal for the main switching stage;an output node configured to provide a secondary control signal for the secondary switching stage;a first electronic switch configured to couple the output node to the input node following completion of activation of said secondary switching stage;a second electronic switch configured to couple the output node to a capacitive component during a time period of activation of said secondary switching stage and during a time period of de-activation of said secondary switching stage;a first current generation circuit configured to generate a first current for selectively charging the capacitive component during said time period of activation of said secondary switching stage; anda second current generation circuit configured to generate a second current for selectively discharging the capacitive component during said time period of de-activation of said secondary switching stage.2. The control circuit of claim 1 , wherein the first current is generated as a function of the main control signal.3. The control circuit of claim 2 , wherein the first current is proportional to a voltage of the main ...

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Номер записи: 81
02-01-2020 дата публикации

CHARGE BALANCED CHARGE PUMP CONTROL

Номер: US20200007033A1
Автор: Giuliano David, Low Aichen, Szczeszynski Gregory
Принадлежит: pSemi Corporation

Operating a charge pump in which switches from a first set of switches couple capacitor terminals to permit charge transfer between them and in which switches from a second set of switches couple capacitor terminals of capacitors to either a high-voltage or a low-voltage terminal includes cycling the switches through a sequence of states, each state defining a corresponding configuration of the switches. At least three of the states define different configurations of the switches. During each of the configurations, charge transfer is permitted between a pair of elements, one of which is a first capacitor and another of which is either a second capacitor or the first terminal. 1. A method comprising operating a charge pump in which switches from a first set of switches are configured to couple terminals of capacitors to permit charge transfer between said capacitors and in which switches from a second set of switches are configured to couple terminals of capacitors to a first terminal , wherein said first terminal is selected from the group consisting of a high-voltage terminal and a low-voltage terminal , wherein operating said charge pump comprises cycling said switches through a sequence of states , each state defining a corresponding configuration of said switches , at least three of said states defining different configurations of said switches , wherein , during each of said configurations , charge transfer is permitted between a pair of elements , wherein said pair of elements consists of a first capacitor and an element selected from the group consisting of a second capacitor and said first terminal.2. The method of claim 1 , further comprising maintaining an average current passing between a regulator and said charge pump.3. The method of claim 1 , further comprising regulating a current at said first terminal claim 1 , thereby maintaining an average current passing between a regulator and said charge pump.4. The method of claim 1 , wherein cycling said ...

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Номер записи: 82
02-01-2020 дата публикации

Hybrid Boost Converters

Номер: US20200007038A1
Автор: Chen Dong, Fu Dianbo
Принадлежит:

A converter comprises a first switching element and a second switching element coupled between an input power source and an output capacitor and an inductor coupled to a common node of the first switching element and the second switching element, wherein the second switching element comprises a first diode and a first switch connected in series between a first terminal and a second terminal of the second switching element and a second diode connected between the first terminal and the second terminal of the second switching element. 1. A converter comprising:a first switching element and a second switching element coupled between an input power source and an output capacitor; and a first diode and a first switch connected in series between a first terminal and a second terminal of the second switching element; and', 'a second diode connected between the first terminal and the second terminal of the second switching element., 'an inductor coupled to a common node of the first switching element and the second switching element, wherein the second switching element comprises2. The converter of claim 1 , further comprising:the first switch is a Metal Oxide Semiconductor Field Effect Transistor (MOSFET) device; andthe first switching element is an Insulated Gate Bipolar Transistor (IGBT) device.3. The converter of claim 2 , wherein:a source of the first switch is connected to an anode of the first diode;a drain of the first switch is connected to an anode of the second diode; anda cathode of the first diode is connected to a cathode of the second diode.4. The converter of claim 1 , wherein:the first diode is a low forward voltage drop diode; andthe second diode is a low reverse recovery diode.5. The converter of claim 1 , wherein:the first diode is a Schottky diode; andthe second diode is a silicon carbide (SiC) diode.6. The converter of claim 1 , wherein:the inductor is connected between the input power source and the common node of the first switching element and the ...

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Номер записи: 83
03-01-2019 дата публикации

CLOCK SIGNAL GENERATOR CIRCUIT

Номер: US20190007034A1
Автор: Kawamoto Ippei, Nakai Satoshi
Принадлежит:

A clock signal generator circuit includes a CR oscillator part, which outputs a clock signal having a frequency corresponding to a time constant determined by a capacitor and a resistor, and a frequency varying part. The frequency varying part includes a counter for performing a counting operation and varies a frequency of the clock signal by varying a resistance value of the resistor in correspondence to a count value of the counter. The resistor of the CR oscillator part includes plural resistive elements, one terminal of which are connected to a common node. The frequency varying part includes tri-state buffers, input terminals of which are connected in common and output terminals of which are connected to other terminals of the resistive elements, respectively, and varies the resistance value of the resistor by switching over states of the buffers in correspondence to the count value. 1. A clock signal generator circuit comprising:a CR oscillator part including a capacitor and a resistor and outputting a clock signal having a frequency corresponding to a time constant determined by the capacitor and the resistor; anda frequency varying part including an operation part, which performs a predetermined operation and outputs a signal corresponding to its operation state, and varying the frequency of the clock signal by varying a resistance value of the resistor in correspondence to the signal outputted from the operation part,wherein the resistor includes plural resistive elements, one terminals of which are connected to a common node,the frequency varying part includes plural buffers having input terminals connected in common and output terminals connected to other terminals of the resistive elements, respectively, and are switchable between a normal operation state and a high impedance state, andthe frequency varying part varies the resistance value of the resistor by switching over states of the buffers in correspondence to the signal outputted from the operation ...

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Номер записи: 84
03-01-2019 дата публикации

Drive Voltage Booster

Номер: US20190007040A1
Автор: Bucheru Bogdan T., Davila Marco A.
Принадлежит:

This disclosure describes a gate driver with voltage boosting capabilities. In some embodiments, the gate driver may comprise a charge pump that includes capacitor(s) and switch(es). Responsive a logic low input signal, the gate driver may bypass the capacitor(s) to allow the input digital signal to drive the gating signal directly. Conversely, responsive to a logic high input signal, the gate driver may couple the capacitor(s) in series with the input digital signal to generate a boosted gating signal. In some embodiments, the gate driver may comprise an inductor-capacitor resonant circuit to create a doubled output gating signal with respect to the input digital signal. In some embodiments, the resonant gate driver may include an additional voltage boosting capability that can be selectively enabled to compensate for a voltage drop during the signal transfer from the input to the output. 1. A gate driver with voltage boosting capabilities for generating a gating signal at an output of the gate driver from an input signal received at an input of the gate driver , the gate driver comprising:a charge pump, the charge pump comprising a capacitor and a plurality of switches;wherein responsive to a low value of an input signal, the capacitor is bypassed by the plurality of switches as to allow the input signal to drive the output directly, andwherein responsive to a high value of the input signal, the capacitor is coupled in series with the input signal by the plurality of switches to drive the output with a boosted value with respect to the input signal.2. The gate driver of claim 1 , whereinthe plurality of switches comprises at least two series-connected switches;the capacitor is coupled across at least one of the at least two series-connected switches;responsive to the low value of the input signal, the capacitor is bypassed by a first switch or a body diode of the first switch of the at least two series-connected switches; andresponsive to the high value of the ...

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Номер записи: 85
03-01-2019 дата публикации

HIGH PERFORMANCE PHASE LOCKED LOOP

Номер: US20190007192A1
Автор: Tajalli Armin
Принадлежит:

Methods and systems are described for receiving N phases of a local clock signal and M phases of a reference signal, wherein M is an integer greater than or equal to 1 and N is an integer greater than or equal to 2, generating a plurality of partial phase error signals, each partial phase error signal formed at least in part by comparing (i) a respective phase of the M phases of the reference signal to (ii) a respective phase of the N phases of the local clock signal, and generating a composite phase error signal by summing the plurality of partial phase error signals, and responsively adjusting a fixed phase of a local oscillator using the composite phase error signal. 1. A method comprising:obtaining a plurality of phases of a reference signal and a plurality of phases of a local oscillator signal; generating a variable-duty-cycle waveform based on an exclusive OR (XOR) phase comparison between a phase of the reference signal and a phase of the local oscillator signal, wherein a duty cycle of the variable-duty cycle waveform is indicative of a phase error between the phase of the reference signal and the phase of the local oscillator signal; and', 'providing the variable-duty-cycle waveform to a respective charge pump as a charge pump control signal to generate the partial phase-error signal;, 'forming at least two partial phase-error signals, each partial phase-error signal formed byperforming a summation of the plurality of partial phase-error signals by injecting or removing charge from a capacitive element according to the plurality of partial phase-error signals to generate a composite phase-error signal; andproviding the composite phase-error signal to a local oscillator generating the plurality of phases of the local oscillator signal.2. The method of claim 1 , wherein the plurality of phases of the reference signal comprises M phases and wherein the plurality of phases of the local oscillator signal comprises N phases claim 1 , and wherein the at least two ...

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Номер записи: 86
11-01-2018 дата публикации

MODULAR WEARABLE SMART BAND WITH INTERCHANGEABLE FUNCTIONAL UNITS

Номер: US20180008016A1
Автор: ELFAKIR Omer, Kane Marcus, Tahmasebzadeh Alireza, Vasylechko Serhiy
Принадлежит: Blocks Wearables Ltd.

Modular smartband can include a plurality of coupled modules. The plurality of modules can include at least one core module having at least one processor and at least one peripheral module. Each of the plurality of modules has a coupler end and a receiving end disposed on opposing ends of the module, the coupler end configured to be received in the receiving end of an adjacent module. At least one of the plurality of modules can include a display and at least one the plurality of modules includes a battery. 1. A modular smartband comprising:a plurality of modules coupled one to the other, the plurality of modules comprising:at least one core module having at least one processor; andat least one peripheral module;wherein each of the plurality of modules has a coupler end and a receiving end disposed opposing ends, the coupler end configured to be received in the receiving end of an adjacent module;wherein at least one of the plurality of modules includes a display and at least one the plurality of modules includes a battery.2. The modular smartband of claim 1 , wherein each of the plurality of modules can receive a removable outer facia claim 1 , the removable outer facia configured to be interchangably couplable with each of the plurality of modules.3. The modular smartband of claim 1 , wherein the plurality of modules includes a core module claim 1 , and one or more peripheral modules each coupled one to the other forming a continuous loop.4. The modular smartband of claim 1 , wherein the at least one core module includes a touch sensitive display.5. The modular smartband of claim 1 , or wherein at least one peripheral module is a battery configured to supply electrical power to the at least one core module and at least one peripheral module.6. The modular smartband of claim 1 , wherein the battery is coupled to a kinetic energy generator claim 1 , the battery configured to be charged by the kinetic energy generator.7. The modular smartband of claim 1 , wherein the ...

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Номер записи: 87
20-01-2022 дата публикации

Apparatus and method for actively discharging a dc link capacitor

Номер: US20220021291A1
Автор: Marko Kertes, Markus Novotny
Принадлежит: VOLKSWAGEN AG

An apparatus for actively discharging at least one DC link capacitor, comprising at least one half-bridge circuit having a high-side transistor and a low-side transistor, wherein the half-bridge circuit is arranged in parallel with the DC link capacitor, wherein a voltage divider comprising at least two resistors is arranged in parallel with the DC link capacitor, wherein a tap of the voltage divider is connected to at least one differentiator, wherein at least one driver module for generating gate driver signals is assigned to the half-bridge circuit, and at least one control unit, wherein the control unit is designed in such a way that, in an active discharge mode, at least one transistor of the half-bridge circuit is controlled as a function of an output signal of the differentiator, as well as to an associated method.

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Номер записи: 88
20-01-2022 дата публикации

POWER MANAGEMENT CIRCUIT OPERABLE TO REDUCE RUSH CURRENT

Номер: US20220021302A1
Автор: Kay Michael R., Khlat Nadim
Принадлежит:

A power management circuit operable to reduce rush current is provided. The power management circuit is configured to provide a time-variant voltage(s) to a power amplifier(s) for amplifying a radio frequency (RF) signal(s). Notably, a variation in the time-variant voltage(s) can cause a rush current that is proportionally related to the variation of the time-variant voltage(s). To reduce the rush current, the power management circuit is configured to maintain the time-variant voltage(s) at a non-zero standby voltage level when the power amplifier(s) is inactive. When the power amplifier(s) becomes active and the time-variant voltage(s) needs to be raised or reduced from the non-zero standby voltage level, the rush current will be smaller as a result of reduced variation in the time-variant voltage(s). As such, it is possible to prolong the battery life in a device employing the power management circuit. 1. A power management circuit comprising:a plurality of voltage outputs each outputting a respective one of a plurality of time-variant voltages to a respective one of a plurality of power amplifiers for amplifying a respective one of a plurality of signals;a voltage circuit configured to generate a first reference voltage and a second reference voltage based on a battery voltage;a first voltage driver circuit coupled between the voltage circuit and the plurality of voltage outputs and configured to generate the plurality of time-variant voltages based on the first reference voltage;a second voltage driver circuit coupled between the voltage circuit and the plurality of voltage outputs and configured to generate the plurality of time-variant voltages based on the second reference voltage; anda control circuit configured to cause the first voltage driver circuit to maintain the plurality of time-variant voltages at a non-zero standby voltage level in response to determining that each of the plurality of power amplifiers is inactive.2. The power management circuit of ...

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Номер записи: 89
27-01-2022 дата публикации

CHARGE PUMP CIRCUIT

Номер: US20220029533A1
Автор: Frith Peter J., Lesso John P., Pennock John L.
Принадлежит:

A bipolar output charge pump circuit having a network of switching paths for selectively connecting an input node and a reference node for connection to an input voltage, a first pair of output nodes, two pairs of flying capacitor nodes, and a controller for controlling the switching of the network of switching paths. The controller is operable to control the network of switching paths when in use with two flying capacitors connected to the two pairs of flying capacitor nodes, to provide a first mode and a second mode when in use with two flying capacitors connected to the flying capacitor nodes, wherein at least the first mode corresponds to a bipolar output voltage of +/−3 VV, +/−VV/5 or +/−VV/6. 1. A charge pump circuit operable to output a bipolar output voltage , comprising:at least one input node for connection to an input voltage;a first output node and a second output node configured to output the bipolar output voltage;flying capacitor nodes for connection to a plurality of flying capacitor nodes;a network of switching paths for interconnecting said nodes; anda switch controller operable to control the network of switching paths, when in use with two flying capacitors connected to the flying capacitor nodes and with first and second reservoir capacitors connected to the first and second output nodes respectively, to repeatedly charge the first and second reservoir capacitors to provide a bipolar output voltage, a first mode where the bipolar output voltage is +/−VV;', 'a second mode where the bipolar output voltage is +/−VV/2; and', 'a third mode where the bipolar output voltage is +/−VV/3;, 'wherein the switch controller is operable in three different operating modes, said operating modes comprisingwherein VV is the input voltage.2. The charge pump circuit of further comprising a charge pump controller for controlling the charge pump to operate in a selected one of said first claim 1 , second or third modes based on at least one control input.3. The charge ...

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Номер записи: 90
12-01-2017 дата публикации

Method for Synchronizing Power Charge-Pump with System Clock

Номер: US20170012522A1
Автор: de Cremoux Guillaume
Принадлежит:

The proposed Power Management Integrated Circuit(PMIC) features the option to synchronize the charge-pump of a PMIC with the system clock, and then to swap and self-oscillate and skip pulses, when the digital controls of the PMIC send a first order to the charge-pump. The clock control circuitry of the PMIC also features the option for the charge-pump to then swap and use the system clock again, when the digital controls of the PMIC send a second order to the charge-pump. The designed transition of the clock from clock sync-mode to self-oscillate, and from self-oscillate back to clock sync-mode, does not present any phase discontinuity. 1. A power management integrated circuit (PMIC) , comprising:a.) a system clock;b) a PMIC control circuit configured to synchronize a charge-pump with the system clock;c.) wherein said charge-pump is configured to self-oscillate and no longer use said system clock, at a first transition; andd.) wherein said charge-pump is configured to swap from said self-oscillating and resynchronize with said system clock, providing continuous phase when a second transition is made.2. The PMIC of claim 1 , further comprising:a.) digital controls for programming a system clock for phase and frequency;b.) flip-flops and associated delay circuits in said charge pump for receiving said system clock phase and frequency;c.) in phase detection and latch circuitry for synchronization and resynchronization of said system clock with said charge-pump;d.) phase control multiplexers and associated delay circuitry for said self-oscillation; ande.) a finite state machine for latching said phase and phase transitions.32. The PMIC of claim 1 , further comprising a phase detector claim 1 , multiplexers claim 1 , and a latching circuit claim 1 , wherein said phase detector is configured to wait for the correct phase such that two clocks get within a time window of being in phase before the glitch-less multiplexor operation is completed on transitions in both ...

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Номер записи: 91
12-01-2017 дата публикации

APPARATUSES AND METHODS FOR CHARGE PUMP REGULATION

Номер: US20170012523A1
Автор: Pan Feng, Piccardi Michele
Принадлежит:

Certain embodiments of the present invention include an apparatus comprising a charge pump, configured to provide an output voltage at an output node of the charge pump, and a charge pump regulator circuit coupled to the charge pump. One such charge pump regulator circuit is configured to control the charge pump to increase the output voltage during a first period of time. Such a charge pump regulator circuit can also cause a node of a circuit coupled to the output node of the charge pump to reach a target voltage level during a second time period. 1. An apparatus comprising:a charge pump configured to provide an output voltage at an output node of the charge pump; anda charge pump regulator circuit coupled to the charge pump and configured to control the charge pump to increase the output voltage during a first time period and to cause a node of a circuit coupled to the output node of the charge pump to reach a target voltage level during a second time period.2. The apparatus of wherein the charge pump regulator circuit is configured to control the charge pump such that the output voltage of the charge pump reaches the target voltage level during the first time period.3. The apparatus of claim 1 , wherein the charge pump regulator circuit comprises a comparator configured to receive a first input signal and a second input signal claim 1 , and to provide an output signal based claim 1 , at least in part claim 1 , on whether the first input signal has a voltage level less than the second input signal.4. The apparatus of claim 3 , wherein the first input signal is based claim 3 , at least in part claim 3 , on the output voltage at the output node of the charge pump.5. The apparatus of claim 3 , wherein the charge pump regulator circuit further comprises an edge detector circuit coupled to the comparator configured to detect a change in an output of the comparator.6. The apparatus of claim 3 , wherein the charge pump regulator circuit further comprises a timing circuit ...

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Номер записи: 92
12-01-2017 дата публикации

COMMUNICATING ACROSS GALVANIC ISOLATION, FOR EXAMPLE, IN A POWER CONVERTER

Номер: US20170012622A1
Автор: Peter Matthias, THALHEIM JAN
Принадлежит:

A signal transmission system for communicating across galvanic isolation. The signal transmission system includes first circuitry referenced to a first potential, the first circuitry comprising signal transmission circuitry, second circuitry referenced to a second potential and galvanically isolated from the first circuitry, the second circuitry comprising signal reception circuitry, and a magnetic coupling between the first circuitry to the second circuitry across the galvanic isolation, the magnetic coupling comprising a transmitter-side inductor and a receiver-side inductor. The signal transmission circuitry can include a source coupled to output, to the transmitter-side inductor of the magnetic coupling, a first state representation that represents a first logic state with multiple transitions, the first state representation including at least a first upward transition, a first downward transition, a second upward transition, and a second downward transition. 1. A signal transmission system for communicating across galvanic isolation , the signal transmission system comprising:first circuitry referenced to a first potential, the first circuitry comprising signal transmission circuitry;second circuitry referenced to a second potential and galvanically isolated from the first circuitry, the second circuitry comprising signal reception circuitry; anda magnetic coupling between the first circuitry to the second circuitry across the galvanic isolation, the magnetic coupling comprising a transmitter-side inductor and a receiver-side inductor; a first state representation that represents a first logic state with multiple transitions, the first state representation including at least a first upward transition, a first downward transition, a second upward transition, and a second downward transition, and', 'a second state representation that represents a second logic state with multiple transitions., 'wherein the signal transmission circuitry comprises a source coupled ...

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Номер записи: 93
12-01-2017 дата публикации

BIPOLAR GATE DRIVER

Номер: US20170012626A1
Автор: Dighrasker Milind, Ghosh Rajesh, Lipare Mahendrakumar Haribhau
Принадлежит: SCHNEIDER ELECTRIC IT CORPORATION

According to one aspect, embodiments of the invention provide a gate driver comprising a level shifter circuit configured to be coupled to a controller, to receive control signals from the controller, each control signal having a voltage with respect to a control ground, and to redefine the voltage of each control signal with respect to a chip ground to generate redefined control signals, a gate driver chip coupled to the level shifter circuit and configured to be coupled to at least one semiconductor device, the gate driver chip further configured to provide bipolar control signals to the at least one semiconductor device based on the redefined control signals, and at least one power source configured to provide at least one positive supply voltage to the gate driver chip and at least one negative supply voltage to the gate driver chip and to the chip ground. 1. A gate driver , the gate driver comprising:a level shifter circuit configured to be coupled to a controller, to receive control signals from the controller, each control signal having a voltage with respect to a control ground, and to redefine the voltage of each control signal with respect to a chip ground to generate redefined control signals;a gate driver chip coupled to the level shifter circuit and configured to be coupled to at least one semiconductor device, the gate driver chip further configured to provide bipolar control signals to the at least one semiconductor device based on the redefined control signals; andat least one power source coupled to the gate driver chip and the chip ground and configured to provide at least one positive supply voltage to the gate driver chip and at least one negative supply voltage to the gate driver chip and to the chip ground.2. The gate driver of claim 1 , wherein the at least one power source includes:at least one positive power supply coupled to the gate driver chip and configured to provide the at least one positive supply voltage to the gate driver chip; ...

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Номер записи: 94
11-01-2018 дата публикации

SPLIT SIGNAL DIFFERENTIAL MEMS MICROPHONE

Номер: US20180012588A1
Автор: Albers John J., Froehlich Thomas
Принадлежит: Knowles Electronics, LLC

An integrated circuit includes a first amplifier and a second amplifier. A first impedance matching circuit is coupled to the first amplifier, a first charge pump, and a single MEMS transducer. A second impedance matching circuit is coupled to the second amplifier, a second charge pump, and to the single MEMS transducer. A first capacitive load as measured at an input of first amplifier, and a second capacitive load as measured at an input of the second amplifier exist. The first capacitive load and the second capacitive load are balanced with respect to each other. A single pressure change causes the single MEMS transducer to create a first electrical signal and a second electrical signal. Both the first electrical signal and the second electrical signal are matched or approximately matched in magnitude, and 180 degrees or approximately 180 degrees out of phase with respect to each other. 1. An integrated circuit , comprising:a first amplifier;a second amplifier;a first impedance matching network coupled to the first amplifier, a first charge pump, and a single MEMS transducer;a second impedance matching network coupled to the second amplifier, a second charge pump, and the single MEMS transducer;a first capacitive load; anda second capacitive load, wherein the first capacitive load and the second capacitive load are sized to equalize total capacitance including parasitic capacitances of an interconnect and the single MEMS transducer; andwherein a single pressure change causes the single MEMS transducer to create a first electrical signal and a second electrical signal, each of the first electrical signal and the second electrical signal being matched or approximately matched in magnitude, and 180 degrees or approximately 180 degrees out of phase with respect to each other.2. The integrated circuit of claim 1 , wherein an electrical bias is applied across the single MEMS transducer by the first charge pump and the second charge pump.3. The integrated circuit of ...

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Номер записи: 95
12-01-2017 дата публикации

CHARGE PUMP AND DEVICES INCLUDING SAME

Номер: US20170013222A1
Автор: CHOI Yong Suk, Han Dong Jae, HEO DONG HUN, Kwon Hyuk Bin, PARK Seok Yong
Принадлежит:

A charge pump provides an output voltage with reduced voltage ripple. The charge pump includes a first capacitor, a second capacitor, and a control circuit. The control circuit charges the first capacitor to one of a first voltage and a second voltage and the second capacitor to the other one of the first and second voltages using differential clock signals and an input voltage during each clock phase and outputs the higher one of the first and second voltages as an output voltage. 1. A charge pump receiving a regulated voltage and generating an output voltage , the charge pump comprising:a first capacitor, a second capacitor, and a control circuit,wherein the control circuit is configured to charge the first capacitor to one of a first voltage and a second voltage and to charge the second capacitor to the other one of the first voltage and second voltage in response to differential clock signals and the regulated voltage during each of a first clock phase and a second clock phase, andthe control circuit is further configured to output a higher one of the first voltage and second voltage as the output voltage.2. The charge pump of claim 1 , wherein the second voltage is higher than the first voltage claim 1 ,the control circuit charges the first capacitor to the first voltage and charges the second capacitor to the second voltage during the first clock phase, andthe control circuit charges the first capacitor to the second voltage and charges the second capacitor to the first voltage during the second clock phase.3. The charge pump of claim 2 , wherein the control circuit charges the first capacitor to the first voltage and charges the second capacitor to the second voltage at the same time during the first clock phase claim 2 , andthe control circuit charges the first capacitor to the second voltage and charges the second capacitor to the first voltage at the same time during the second clock phase.4. The charge pump of claim 1 , wherein the control circuit ...

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Номер записи: 96
15-01-2015 дата публикации

Capacitive DC Power Transformer

Номер: US20150015088A1
Автор: Petersen Holger
Принадлежит:

The present document relates to power transformers for electronic computing devices. In particular, a power converter configured to convert electrical power at a DC input voltage Vin into electrical power at a DC output voltage is described. The power converter comprises a plurality of flying capacitors, and a plurality of switches which are configured to arrange the plurality of flying capacitors in accordance to a sequence of operation phases. The power converter comprises a control unit configured to control the plurality of switches to repeat the sequence of operation phases at a duty cycle frequency. The plurality of flying capacitors is arranged in series during the operation phases of the sequence of operation phases. The sequence of operation phases comprises at least two operation phases during which the plurality of flying capacitors is arranged in a different order. 1. A power converter configured to convert electrical power at a DC input voltage Vin into electrical power at a DC output voltage Vout , the power converter comprisinga plurality of flying capacitors;a plurality of switches configured to arrange the plurality of flying capacitors in accordance to a sequence of operation phases;a control unit configured to control the plurality of switches to repeat the sequence of operation phases at a duty cycle frequency; wherein the plurality of flying capacitors is arranged in series during the operation phases of the sequence of operation phases; and wherein the sequence of operation phases comprises at least two operation phases during which the plurality of flying capacitors is arranged in a different order.2. The power converter of claim 1 , whereinin case of a voltage down-conversion, the serial arrangement of flying capacitors is arranged in parallel to the input voltage Vin during the operation phases of the sequence of operation phases; and the sequence of operation phases comprises at least two operation phases during which different subsets of ...

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Номер записи: 97
15-01-2015 дата публикации

CHARGE PUMP CIRCUIT

Номер: US20150015323A1
Автор: Day Jacob Wayne, Rahman Abidur
Принадлежит:

A charge pump circuit includes a plurality of serially coupled stages and a plurality of clock drivers. A voltage output of a first of the stages is connected to a voltage input of a second of the stages. A voltage output of the second of the stages is boosted relative to a voltage input of the second of the stages. Each of the stages includes complementary charge pumps. Each of the charge pumps includes a pumping capacitor that stores charge in the stage. Each of the clock drivers drives a clock signal to the pumping capacitor of at least one of the stages. A voltage of the clock signal provided to the second of the stages is derived from the voltage input of the second of the stages. 1. A charge pump circuit , comprising: 'a pumping capacitor that stores charge in the stage; and', 'complementary charge pumps, each of the charge pumps comprising, 'a plurality of serially coupled stages, wherein a voltage output of a first of the stages is connected to a voltage input of a second of the stages, and a voltage output of the second of the stages is boosted relative to a voltage input of the second of the stages, each of the stages comprisinga plurality of clock drivers, wherein each of the clock drivers drives a clock signal to the pumping capacitor of at least one of the stages, and wherein a voltage of the clock signal provided to the second of the stages is derived from the voltage input of the second of the stages.2. The charge pump circuit of claim 1 , wherein the plurality of stages comprises no more than three stages claim 1 , and a voltage output of a third of the stages is boosted by approximately a factor of five relative to the voltage output of the first of the stages.3. The charge pump circuit of claim 1 , wherein the stages combine to boost voltage output by approximately a factor of at least five claim 1 , and voltage across the pumping capacitor of none of the stages exceeds four times a voltage of the clock signal driving the first of the stages.4. The ...

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Номер записи: 98
15-01-2015 дата публикации

CIRCUITRY, MULTI-BRANCH CHARGE PUMP, METHOD FOR CONTROLLING A CHARGE PUMP AND SYSTEM

Номер: US20150015324A1
Автор: Pidutti Albino, Sorger Bernhard
Принадлежит:

One example refers to a circuitry comprising a first charge pump stage controlled by a first control signal, a second charge pump stage controlled by a second control signal, wherein the first charge pump stage and the second charge pump stage are arranged subsequently to each other and comprising a control unit for providing the first control signal and the second control signal, wherein the control unit is arranged to set the second control signal to high when the first control signal is high. Also, a multi-branch charge pump, a method for controlling various charge pumps and a system for controlling various charge pumps are suggested. 1. Circuitry comprising:a first charge pump stage controlled by a first control signal,a second charge pump stage controlled by a second control signal,wherein the first charge pump stage and the second charge pump stage are arranged subsequently to each other, anda control unit for providing the first control signal and the second control signal, wherein the control unit is arranged to set the second control signal to high when the first control signal is high.2. The circuitry according to claim 1 , wherein the first charge pump stage and the second charge pump stage are arranged subsequently to each other claim 1 ,wherein an input signal is directly or indirectly fed to the first charge pump stage,and via the first charge pump stage directly or indirectly conveyed to the second charge pump stage.3. The circuitry according to claim 1 , wherein the first charge pump stage and the second charge pump stage each comprises:a semiconductor element which is driven by the control signal of the respective stage, which is conveyed to the semiconductor element via a capacitor.4. The circuitry according to claim 3 , wherein the semiconductor element comprises at least one of the following:a transistor,a diode,a bipolar transistor,a MOSFET,a HVMOS transistor,an IGBT,a field-effect transistor.5. The circuitry according to claim 1 , wherein the ...

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Номер записи: 99
15-01-2015 дата публикации

MULTIPLE OUTPUT CHARGE PUMP WITH MULTIPLE FLYING CAPACITORS

Номер: US20150015325A1
Автор: Williams Richard K.
Принадлежит: ADVANCED ANALOGIC TECHNOLOGIES INCORPORATED

A multiple output charge pump that includes a first flying capacitor, a second flying capacitor, a first output node, a second output node, and a switching network. The first output node is configured to provide a first voltage, and the second output node is distinct from the first output node and is configured to provide a second voltage, different than the first voltage. The switching network is configured to provide a first mode of operation in which the first and second flying capacitors are connected in one of in series with one another between an input voltage and ground or in parallel with one another between the input voltage and ground, a second mode of operation in which the first and second flying capacitors are connected in parallel with one another between ground and the second output node, and a third mode of operation. 1. A multiple output charge pump comprising:a first flying capacitor;a second flying capacitor;a first output node to provide a first voltage;a second output node, distinct from the first output node, to provide a second voltage different than the first voltage; anda switching network configured to provide a first mode of operation in which the first and second flying capacitors are connected in one of in series with one another between an input voltage and ground or in parallel with one another between the input voltage and ground, a second mode of operation in which the first and second flying capacitors are connected in parallel with one another between ground and the second output node, and a third mode of operation.2. The multiple output charge pump of further comprising:a first output capacitor coupled between the first output node and ground; anda second output capacitor coupled between the second output node and ground.3. The multiple output charge pump of wherein for the first mode of operation the first and second flying capacitors are connected in series between the input voltage and ground.4. The multiple output charge pump ...

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Номер записи: 100