Adaptive modulation control for multiple-phase voltage regulators

    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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