VR transient improvement at high slew rate load - Active transient voltage compensator

    Authors

    X. C. Wang; I. Batarseh; S. A. Chickamenahalli;E. Standford

    Comments

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

    Abbreviated Journal Title

    IEEE Trans. Power Electron.

    Keywords

    active transient voltage compensator (ATVC); high slew rate; load line; synchronous buck converter; voltage regulator (VR); Engineering, Electrical & Electronic

    Abstract

    To meet the stringent transient response requirements of a voltage regulator (VR) at high slew rate load current while keeping high VR efficiency, this paper proposes a new topology: active transient voltage compensator (ATVC). ATVC only engages in transient periods operating at several MHZ to handle ac current and main VR operates at low switching frequency for better efficiency mainly providing dc current. ATVC injects a very high slew rate current in step up load and recovers energy in step down load. With introduction of a transformer, ATVC significantly reduces its conduction and switching losses due to the reduced current. Also, the new topology reduces the number of VR bulk capacitors while keeping the same output impedance. A built prototype and detailed experimental results verify the theoretical analysis.

    Journal Title

    Ieee Transactions on Power Electronics

    Volume

    22

    Issue/Number

    4

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    1472

    Last Page

    1479

    WOS Identifier

    WOS:000247983600040

    ISSN

    0885-8993

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