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

    Authors

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

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    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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