A zero voltage zero current switching converter
Номер патента: WO2008047186A2. Автор: Steve Lee Tai Keung. Владелец: Astec Custom Power (Hk) Ltd.. Дата публикации: 24-04-2008.A power converter circuit includes an input switching circuit (12), an isolation circuit (14), a rectifier circuit that includes at least a pair of rectifiers (D1, D2), and an output circuit (16). The input switching circuit (12) receives a first voltage and generates an AC voltage. The isolation circuit (14) has a primary side (33) configured to receive the AC voltage from the input switching circuit (12) and a secondary side (34). The secondary side (34) communicates with the rectifier circuit and the output circuit (16). The output circuit (16) includes a secondary inductor (52b) and a diode (D3). The secondary inductor (52b) communicates with a primary inductor (52a) and either the rectifier circuit or the secondary side (34). The diode (D3) communicates with the primary inductor (52a), the secondary inductor (52b), and the rectifier circuit. The secondary inductor (52b) inhibits current flow through the rectifier circuit and forces current flow through the diode (D3) when no voltage is applied to the primary side (33) of the isolation circuit (14).