Title

Active-clamp snubbers for isolated half-bridge DC-DC converters

Authors

Authors

H. Mao; S. Q. Deng; J. Abu-Qahouq;I. Batarseh

Comments

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Abbreviated Journal Title

IEEE Trans. Power Electron.

Keywords

active-clamp; converter; dc-dc; half-bridge; isolation; leakage; inductance; reverse recovery; snubber; topology; transformer; Engineering, Electrical & Electronic

Abstract

In conventional isolated half-bridge de-dc converters, the leakage-inductance- related losses degrade converter efficiency and limit the ability to increase the converters' switching frequencies. In this paper, a novel active-clamp snubber circuit for halfbridge dc-dc converters is proposed-to recycle the energy stored in the leakage inductance by transferring this energy to a capacitor with zero-voltage zero-current-switching switched auxiliary switches, such that body-diode conduction of primary-side main switches are prevented and primary side ringing are attenuated resulting in improved converter efficiency. Principles of operation and simulation analysis are presented and supported by experimental results that show significant improvement in efficiency.

Journal Title

Ieee Transactions on Power Electronics

Volume

20

Issue/Number

6

Publication Date

1-1-2005

Document Type

Article

Language

English

First Page

1294

Last Page

1302

WOS Identifier

WOS:000233263500009

ISSN

0885-8993

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