Synchronous rectification control circuit

Details Synchronous rectification control circuit Synchronous rectification control circuit

2007-05-02

2009-06-02

Nguyen, Matthew V (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S021050

Reexamination Certificate

active

07542310

ABSTRACT:
The present invention discloses a synchronous rectification control circuit, comprising at least one switch unit, a pulse width control unit, a transformer, a first rectification unit, a second rectification unit, a plurality of driving units, a logic operation unit and a signal transmission unit. The logic operation unit is used for receiving a working cycle signal generated by the pulse width control unit. When the working cycle signal is changed, the signal transmission unit transmits a switching signal for changing the working conditions of the first and second rectification units at a secondary side of the transformer, so as to switch the first and second rectification units before the switch unit operates and prevent possible short circuits or overlaps.

REFERENCES:
patent: 5708571 (1998-01-01), Shinada
patent: 5734563 (1998-03-01), Shinada
patent: 6674658 (2004-01-01), Mao et al.
patent: 6765810 (2004-07-01), Perry
patent: 7304868 (2007-12-01), Aso et al.

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