Buck-boost power factory correction circuit

Details Buck-boost power factory correction circuit Buck-boost power factory correction circuit

2005-08-02

2005-08-02

Riley, Shawn (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using a three or more terminal semiconductive device

C323S222000, C323S282000, C323S207000

Reexamination Certificate

active

06924630

ABSTRACT:
A buck-boost switching converter includes a soft-switching circuit coupled across the boost switch, controlled to establish a short-circuit across the boost switch prior to turn-on of the boost switch. The converter also includes a second soft-switching circuit including a third switch and a saturable inductor coupled across the buck switch. The third switch is rendered conductive sufficiently before the buck switch so that a half-cycle of resonance can occur between the saturable inductor and the buck switch.

REFERENCES:
patent: 4323845 (1982-04-01), Leach
patent: 5642267 (1997-06-01), Brkovic et al.

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