Title

Adaptive modulation control for multiple-phase voltage regulators

Authors

Authors

S. Xiao; W. Qiu; G. Miller; T. X. Wu;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

adaptive modulation control (AMC); bandwidth; multiphase voltage; regulator (VR); transient response; Engineering, Electrical & Electronic

Abstract

This letter presents an adaptive modulation control (AMC) method which has proven to be effective in achieving high bandwidth designs as well as stabilizing the control loop during large load transients. The AMC adaptively adjusts control bandwidth by changing the modulation gain, depending on different load conditions. With the AMC, a multiphase voltage regulator can be designed with an aggressively high bandwidth, while in heavy load transients where the loop could be potentially unstable, the bandwidth is lowered. Therefore, the AMC provides an optimal means for robust high-bandwidth design with excellent transient performance. It is a type of non-linear control designed for, but not limited to, multiphase voltage regulators with droop control. Detailed analysis of the operational mechanism is presented. Experiment results are included to verify the analysis.

Journal Title

Ieee Transactions on Power Electronics

Volume

23

Issue/Number

1

Publication Date

1-1-2008

Document Type

Article

Language

English

First Page

495

Last Page

499

WOS Identifier

WOS:000253209000053

ISSN

0885-8993

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