An active resonant circuit with the dynamic resonant period control technique for fast zero voltage switching in GaN-based active clamp flyback converters

Jia Jyun Lee, Jiang Yue Wu, Mu Wei Lee, Ke-Horng Chen, Ying Hsi Lin, Shian Ru Lin, Tsung Yen Tsai

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

7 Scopus citations

Abstract

This paper proposes an active clamp flyback (ACF) converter with GaN devices. Compared to Si FETs, when the main GaN FET is at full zero voltage switching (FZVS), maximum switching loss reduction can be achieved. Thus, the use of dynamic resonant period control (DRPC) technique to achieve fast ZVS can reduce 87% of the transformer leakage inductance energy loss on the active resonant circuit (ARC). When the load changes, the DRPC technique dynamically adjusts the auxiliary switch on-time to prevent large voltage stress on the primary side components. At full load, the leakage energy loss can be reduced, thereby transferring more energy to the secondary side with an efficiency of up to 94%.

Original languageEnglish
Title of host publication2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-4
Number of pages4
ISBN (Electronic)9781728103976
DOIs
StatePublished - 26 May 2019
Event2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019 - Sapporo, Japan
Duration: 26 May 201929 May 2019

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
Volume2019-May
ISSN (Print)0271-4310

Conference

Conference2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019
Country/TerritoryJapan
CitySapporo
Period26/05/1929/05/19

Keywords

  • Active clamp flyback (ACF)
  • Active resonant circuit (ARC)
  • Dynamic resonant period control (DRPC) technique
  • Full zero voltage switching (FZVS)

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