Method and apparatus for synchronous rectifying of soft...

Details Method and apparatus for synchronous rectifying of soft... Method and apparatus for synchronous rectifying of soft...

2007-10-09

2010-02-09

Riley, Shawn (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S053000, C363S089000, C363S090000, C363S127000

Reexamination Certificate

active

07660136

ABSTRACT:
An apparatus for synchronous rectifying of a soft switching power converter is provided. An integrated synchronous rectifier includes a power transistor coupled between a transformer and the output of the soft switching power converter, and a controller receiving a pulse signal to switch on/off the power transistor. A switching control circuit generates the pulse signal in response to a current signal, and generates drive signals to switch the transformer in response to a switching signal. An isolation device is coupled to transfer the pulse signal between the switching control circuit and the integrated synchronous rectifier. The switching signal is used for regulating the power converter and the current signal is correlated to the switching current of the transformer.

REFERENCES:
patent: 7224590 (2007-05-01), Lin
patent: 7385832 (2008-06-01), Allinder
patent: 7480158 (2009-01-01), Moromizato et al.
patent: 7499294 (2009-03-01), Lin et al.
patent: 2005/0047177 (2005-03-01), Tobita

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