Title

Dsp-controlled multiphase hysteretic VRM with current sharing equalization

Authors

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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