Forward converter with synchronous rectification

Details Forward converter with synchronous rectification Forward converter with synchronous rectification

2007-08-28

2008-09-09

Nguyen, Matthew V (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S021040

Reexamination Certificate

active

07423889

ABSTRACT:
A commutation switch turning-on control switching element is controlled with a voltage generated at a fourth coil (auxiliary coil) of a main transformer and controls application of a control voltage to a control terminal of a commutation switching element. A commutation switch turning-off control switching element is provided which is connected to the control terminal of the commutation switching element and, when the commutation switch turning-off control switching element is turned on, controls a voltage at the control terminal of the commutation switching element to turn off the commutation switching element. A control switching element drive circuit turns on the commutation switch turning-off control switching element at a time when a primary switching element is turned on.

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patent: 6064580 (2000-05-01), Watanabe et al.
patent: 6185114 (2001-02-01), Matsumoto et al.
patent: 6711039 (2004-03-01), Brkovic
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patent: 7196920 (2007-03-01), Quitayen
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Written Opinion.
International Search Report issued Mar. 20, 2007.

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