Stability of multi-winding coupled inductors in buck converters

Bradley Oraw, Raja Ayyanar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Abstract

Coupled inductors in multiphase buck are becoming more popular in point of load applications. Most interest has focused on 2-winding coupled inductors. Analysis and design of 2-winding devices is maturing. However, a generalized understanding of multi-winding coupled inductors is less understood. This paper discusses a general theory for multi-winding structures. In particular, stability is examined in detail. It is shown in this paper that for large negative coupling coefficients, the multi-winding coupled buck exhibits unstable negative inductance. This paper is the first to document such an instability.

Original languageEnglish (US)
Title of host publicationINTELEC 2008
Subtitle of host publication30th Annual International Telecommunications Energy Conference
DOIs
StatePublished - Dec 30 2008
Event30th Annual International Telecommunications Energy Conference, INTELEC 2008 - San Diego, CA, United States
Duration: Sep 14 2008Sep 18 2008

Publication series

NameINTELEC, International Telecommunications Energy Conference (Proceedings)
ISSN (Print)0275-0473

Other

Other30th Annual International Telecommunications Energy Conference, INTELEC 2008
CountryUnited States
CitySan Diego, CA
Period9/14/089/18/08

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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