Design of a low EMI boost converter using bi-frequency PFM control mode

  • Cheng'En Wu
  • , Changyuan Chang
  • , Yan Zhang
  • , Junjie Hu
  • , Yao Chen

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

Abstract

A bi-frequency PFM controlled boost DC-DC converter is designed and implemented in this paper to improve the electro-magnetic interference (EMI) and efficiency of the system in a wide load range. The spectral energy of proposed bi-frequency PFM controlled converter is distributed to more frequency points to decrease the discrete harmonic peak, achieving low EMI. A control IC for the boost converter has been fabricated in Founder Microelectronics 0.5μm CMOS process. Experimental results show that the full-load conversion efficiency is over 80%, and the converter has fine EMI characteristics.

Original languageEnglish
Title of host publication4th International Symposium on Next-Generation Electronics, IEEE ISNE 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479942084
DOIs
StatePublished - 23 Jun 2015
Externally publishedYes
Event4th International Symposium on Next-Generation Electronics, IEEE ISNE 2015 - Taipei, Taiwan, Province of China
Duration: 4 May 20156 May 2015

Publication series

Name4th International Symposium on Next-Generation Electronics, IEEE ISNE 2015

Conference

Conference4th International Symposium on Next-Generation Electronics, IEEE ISNE 2015
Country/TerritoryTaiwan, Province of China
CityTaipei
Period4/05/156/05/15

Keywords

  • EMI
  • bi-frequency modulation
  • boost DC-DC converter
  • dual-oscillator

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