Title

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

Authors

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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