Dsp-controlled multiphase hysteretic VRM with current sharing equalization

    Authors

    J. Abu-Qahouq; N. Pongratananukul; T. Kasparis;I. Batarseh

    Comments

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    Abbreviated Journal Title

    J. Circuits Syst. Comput.

    Keywords

    VRM; converter; DC-DC; control; digital; DSP; hysteretic; current; sharing; Computer Science, Hardware & Architecture; Engineering, Electrical &; Electronic

    Abstract

    Many of the new high-speed high-integration density Integrated Circuits (ICs) and future generation of microprocessor powering requirements can be successfully achieved with voltage-mode hysteretic control applied to interleaved multiphase Point-of-Load (POL) DC-DC converters or Voltage Regulator Modules (VRMs). This is because of the several advantages that can be achieved by combining the advantages of hysteretic control and interleaving. However, there are several challenges in combining the two techniques, the most prominent being the current sharing and equalization between the interleaved phases. In this communication, we present a solution based on a real-time DSP controller. Challenges of the implementation will be discussed and experimental results obtained from a prototype will be presented.

    Journal Title

    Journal of Circuits Systems and Computers

    Volume

    14

    Issue/Number

    6

    Publication Date

    1-1-2005

    Document Type

    Article

    Language

    English

    First Page

    1073

    Last Page

    1084

    WOS Identifier

    WOS:000236045900004

    ISSN

    0218-1266

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