Suppression of electromagnetic interference of DC-DC power converters by chaos generators

Fu-Chuang Chen*, Po Nien Shen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Power DC-DC converters are notorious sources of electromagnetic interference in electronic products; therefore, suppression of EMI is an important topic in the design of switch-mode power converters. Conventional EMI suppression methods may employ LC filters and metal shielding, but this can significantly increase cost, size, and weight. In this paper we propose a chaos-based method to reduce peak EMI magnitude and spread the energy to a wide range of frequencies. This method is to add a chaos-modulation clock to a converter maintaining in regular period state, in order to create chaotic behaviors in the converter. Our results show that this method is effective in suppressing EMI in DC-DC converters without much impact on the performance of converters. System stability is also analyzed and discussed. Moreover, compared with conventional methods, this method can be easily implemented in CMOS technology.

Original languageEnglish
Title of host publicationAUPEC 2010 - 20th Australasian Universities Power Engineering Conference
Subtitle of host publication"Power Quality for the 21st Century"
StatePublished - 1 Dec 2010
Event20th Australasian Universities Power Engineering Conference: "Power Quality for the 21st Century", AUPEC 2010 - Christchurch, New Zealand
Duration: 5 Dec 20108 Dec 2010

Publication series

NameAUPEC 2010 - 20th Australasian Universities Power Engineering Conference: "Power Quality for the 21st Century"

Conference

Conference20th Australasian Universities Power Engineering Conference: "Power Quality for the 21st Century", AUPEC 2010
CountryNew Zealand
CityChristchurch
Period5/12/108/12/10

Keywords

  • Bifurcation
  • Boost converter
  • Chaos
  • Current mode control
  • DC-DC converter
  • EMI
  • PSD

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