Resonance circuit for use in H-bridge DC-DC converter

Details Resonance circuit for use in H-bridge DC-DC converter Resonance circuit for use in H-bridge DC-DC converter

2011-01-11

2011-01-11

Vu, Bao Q (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S017000, C363S132000, C363S134000

Reexamination Certificate

active

07869230

ABSTRACT:
The present invention discloses a resonance circuit for use in an H-bridge DC-DC converter, the resonance circuit comprising: an H-bridge converter, capable of converting unstable DC power into stable DC power; a first resonance circuit, disposed on a buck side of the H-bridge converter for reducing the turn-off loss of a first active switching element; and a second resonance circuit, disposed on a boost side of the H-bridge converter for reducing the turn-on loss of a second active switching element. The H-bridge converter comprises: a first active switching element and a second active switching element; a coupled inductor with dual windings capable of storing energy; and a first passive switching element and a second passive switching element. The first resonance circuit comprises: a first inductor, a second inductor, a first auxiliary inductor, a first passive switching element, a second passive switching element and a first auxiliary capacitor, wherein the second inductor comprises a primary winding and an auxiliary winding. The second resonance circuit comprises: a second auxiliary inductor, a third active switching element, a first auxiliary inductor, a first passive switching element, a fourth passive switching element, a third capacitor, a fourth capacitor and a second auxiliary capacitor.

REFERENCES:
patent: 6483723 (2002-11-01), Kuranuki et al.
patent: 6876556 (2005-04-01), Zhu et al.
patent: 2005/0041439 (2005-02-01), Jang et al.

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