Forward converter with synchronous rectifier and reverse...

Details Forward converter with synchronous rectifier and reverse... Forward converter with synchronous rectifier and reverse...

2007-05-29

2007-05-29

Nguyen, Matthew V. (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S056010

Reexamination Certificate

active

10956385

ABSTRACT:
A control circuit for use in a power converter has a synchronous rectifier for producing substantially direct current, including a sensor for sensing a characteristic of the power converter; detection circuitry capable of using the characteristic to develop a control signal for controlling the power converter; and synchronous rectifier control circuitry connected to the detection circuitry wherein the control circuitry is adapted to modify a duty cycle of the power converter as a function of the control signal thereby to turn off a freewheel switch of the synchronous rectifier before turning off a forward switch of the synchronous rectifier during a reverse current period.

REFERENCES:
patent: 5663877 (1997-09-01), Dittli et al.
patent: 6256214 (2001-07-01), Farrington et al.
patent: 6414861 (2002-07-01), Matsumoto et al.
patent: 6618274 (2003-09-01), Boylan et al.

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