Active clamp DC/DC converter with resonant transition system

Details Active clamp DC/DC converter with resonant transition system Active clamp DC/DC converter with resonant transition system

2006-08-15

2006-08-15

Berhane, Adolf (Department: 2838)

Electric power conversion systems

Current conversion

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

Reexamination Certificate

active

07092259

ABSTRACT:
A dc-dc converter is disclosed comprising an active clamp topology, including an active clamp resonant transition system to provide substantially zero or reduced voltage for turn-on of the primary switch. The resonant transition system includes an inductor in series with the primary winding of the power transformer and a clamp diode that operate cooperatively to turn on the primary switch with reduced voltage. A second diode is included in series with a balancing resistor to discharge a snubber capacitor with improved efficiency. The addition of these circuit components provides low switching losses and low component stresses in the overall design.

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C.S. Leu, et al., “Comparison of Forward Topologies with Various Reset Schemes,” VPEC Seminar Proceedings, Sep. 15-17, 1991, pp. 101-109, vol. 9, Virginia Power Electronics Center, Blacksburg, VA, USA.

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