21-05-2020 дата публикации
Номер: US20200161814A1
Принадлежит:
The present invention discloses a sofa USB socket including: a USB female socket including a tongue core, wherein the tongue core includes 5 pins, and the fifth pin is an ID pin; and a USB circuit including a power circuit, a filter circuit, a control chip and a buck chopper circuit, wherein the buck chopper circuit includes a transistor, and the ID pin is electrically connected with the transistor. When an external USB male plug is inserted into the USB female socket, the power circuit supplies power to the USB female socket; when the USB female socket is in an unloaded state, the fifth pin is suspended, the control chip enters a sleep state, and the USB female socket has no output voltage, which greatly reduces the no-load energy consumption, thereby being beneficial to extending the endurance time and the service life of a power supply battery. 1. A sofa USB socket , wherein the sofa USB socket comprises:a USB female socket, wherein the USB female socket comprises a tongue core, and the tongue core comprises 5 pins, and a fifth pin contained in the tongue core is an ID pin; anda USB circuit, wherein the USB circuit comprises a power circuit, a filter circuit, a control chip and a buck chopper circuit, and the buck chopper circuit comprises a transistor, and the ID pin is electrically connected with the transistor.2. The sofa USB socket according to claim 1 , wherein the filter circuit is a π-type filter circuit composed of an inductor and a capacitor.3. The sofa USB socket according to claim 2 , wherein transient diodes are arranged at both ends of the filter circuit.4. The sofa USB socket according to claim 1 , wherein the control chip comprises an enable pin claim 1 , and the transistor is a PNP transistor claim 1 , and wherein an emitter of the PNP transistor is electrically connected with the enable pin claim 1 , a base of the PNP transistor is electrically connected with the ID pin claim 1 , and a collector of the PNP transistor is used for grounding.5. The ...
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