Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2006-04-25
2006-04-25
Laxton, Gary L (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S021140, C363S127000
Reexamination Certificate
active
07035120
ABSTRACT:
An example synchronous rectifier circuit includes a transformer having a primary winding and a secondary winding which are insulated from each other; a main switch provided at a primary side of the circuit, which includes the primary winding; a rectifying FET provided at a secondary side of the circuit, which includes the secondary winding; a commutating FET provided at the secondary side of the circuit; and an auxiliary FET provided between a gate and a source of the rectifying FET. The auxiliary FET has a threshold lower than a threshold of the commutating FET and a gate of the auxiliary FET is connected to a gate of the commutating FET, and a short circuit is produced between the gate and the source of the rectifying FET while the commutating FET is in an on-state.
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Laxton Gary L
Nixon & Vanderhye PC
Shindengen Electric Manufacturing Co. Ltd.
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