Forward power converter with self-excited synchronous...

Details Forward power converter with self-excited synchronous... Forward power converter with self-excited synchronous...

2006-02-07

2006-02-07

Han, Jessica (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S021140, C363S127000

Reexamination Certificate

active

06995988

ABSTRACT:
A forward power converter with a self-excited synchronous rectifying circuit makes use of the self-excitation function of a transformer to generate electric energy at a secondary side winding coil of the transformer, hence controlling an n-channel FET to accomplish synchronous rectification. In the synchronous rectifying circuit, the drain of the n-channel FET is connected to an end of the secondary side of a first transformer, the source of the n-channel FET is connected to a positive end of a flywheel diode, the negative end of the flywheel diode is connected to the other end of the secondary side of the first transformer, a control end of the n-channel FET is connected to an end of an induction coil via a resistor and a capacitor, and the other end of the induction coil is connected to the source of the n-channel FET.

REFERENCES:
patent: 5343383 (1994-08-01), Shinada et al.
patent: 5663877 (1997-09-01), Dittli et al.
patent: 6452818 (2002-09-01), Simopoulos

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