Active resonant snubber for DC-DC converter

Details Active resonant snubber for DC-DC converter Active resonant snubber for DC-DC converter

2005-09-20

2005-09-20

Berhane, Adolf (Department: 2838)

Electric power conversion systems

Current conversion

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

Reexamination Certificate

active

06947297

ABSTRACT:
The present invention proposes an improved circuit design and configuration of a DC-DC converter with resonant reset. In this present invention, the active resonant snubber in parallel to a primary winding of a transformer of a DC-DC converter for resetting the transformer includes a resonant capacitor, an active switch connected to the resonant capacitor in series, an auxiliary diode coupled across the active switch in parallel, and an auxiliary winding coupled with the transformer. When a main switch of the DC-DC converter is turned off, the auxiliary winding turns on the active switch, and then the transformer is reset by a resonance between a magnetizing inductor of the transformer and the resonant capacitor.

REFERENCES:
patent: 3694730 (1972-09-01), Hoft et al.
patent: 6191960 (2001-02-01), Fraidlin et al.
patent: 6259235 (2001-07-01), Fraidlin et al.

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