Output impedance of high performance current mode DC-DC buck converters, with applications to voltage-regulator module control combinations

J. T. Mossoba, Philip T Krein

Research output: Contribution to conferencePaper

Abstract

Voltage regulator modules (VRMs) comprising parallel interleaved buck converters can be controlled by current-mode methods to achieve low dynamic output impedance. A two-phase VRM is designed using both sensorless current mode (SCM) and peak current mode (PCM) control. SCM control for one phase provides a means of achieving low output impedance for the parallel converter system. PCM is used to control the other phase, without output voltage feedback, to enforce current sharing between the phases. In this configuration, SCM and PCM are exploited for their natural reference tracking capabilities: voltage and current, respectively.

Original languageEnglish (US)
Pages1315-1321
Number of pages7
StatePublished - May 24 2004
Event19th Annual IEEE Applied Power Electronics Conference and Exposition - APEC 2004 - Anaheim, CA., United States
Duration: Feb 22 2004Feb 26 2004

Other

Other19th Annual IEEE Applied Power Electronics Conference and Exposition - APEC 2004
CountryUnited States
CityAnaheim, CA.
Period2/22/042/26/04

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Keywords

  • Control
  • Parallel converters
  • Peak current mode
  • Sensorless current mode
  • Small-signal model
  • VRM
  • dc-dc converter

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Mossoba, J. T., & Krein, P. T. (2004). Output impedance of high performance current mode DC-DC buck converters, with applications to voltage-regulator module control combinations. 1315-1321. Paper presented at 19th Annual IEEE Applied Power Electronics Conference and Exposition - APEC 2004, Anaheim, CA., United States.