Synchronous rectifier control device and forward synchronous...

Details Synchronous rectifier control device and forward synchronous... Synchronous rectifier control device and forward synchronous...

Filed on

2011-01-04

Date issued

2011-01-04

Examiner

Berhane, Adolf (Department: 2838)

Patent Class

Electric power conversion systems

SubClass

Current conversion

SubSubClass

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

Other Related Categories

C363S127000

Type

Reexamination Certificate

Status

active

Patent number

07864548

Description

ABSTRACT:
Disclosed are a synchronous rectifier control device and a forward synchronous rectifier circuit. The synchronous rectifier control device is coupled with the secondary side of the forward synchronous rectifier circuit, comprising a condition detecting unit, a reference time circuit and a synchronous signal generator. The condition detecting unit receives at least one reference signal and a detecting signal in response to the condition of the secondary side of the forward synchronous rectifier circuit, and accordingly generates a first synchronous control signal. The reference time circuit is coupled with the condition detecting unit, and generates a reference time signal in response to the first synchronous control signal. The synchronous signal generator generates a second synchronous control signal in response to the first synchronous control signal and the reference time signal.

REFERENCES:
patent: 6888728 (2005-05-01), Takagi et al.
patent: 7184280 (2007-02-01), Sun et al.
patent: 7206208 (2007-04-01), Hsu et al.
patent: 7764516 (2010-07-01), Yang
patent: 2004/0136209 (2004-07-01), Hosokawa et al.
patent: 2005/0024896 (2005-02-01), Man-Ho
patent: 2008/0002441 (2008-01-01), Allinder
patent: 2009/0003019 (2009-01-01), Yang

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