Synchronous rectification circuit for power converters

Details Synchronous rectification circuit for power converters Synchronous rectification circuit for power converters

2006-08-11

2008-10-21

Sterrett, Jeffrey L (Department: 2838)

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

C363S127000

Reexamination Certificate

active

07440298

ABSTRACT:
A synchronous rectification circuit for power converters operable under fixed and/or variable frequencies where no current sense circuit or phase-lock circuit are needed is provided. It has a power switch coupled to a transformer for the rectification. A signal-generation circuit is used for generating a control signal in response to a magnetized voltage of the transformer, a demagnetized voltage of the transformer, and a magnetization period of the transformer. The control signal is coupled to turn on the power switch. The enable period of the control signal is correlated to a demagnetization period of the transformer.

REFERENCES:
patent: 6995991 (2006-02-01), Yang et al.
patent: 2008/0037302 (2008-02-01), Yang

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