Design and Implementation of an Active-Clamp Forward Converter with GaN Power Device

  • Chung Wen Liu
  • , Tsorng Juu Liang*
  • , Kuo Fu Liao
  • , Kai Hui Chen
  • , Ying Jia Lin
  • *Corresponding author for this work

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

2 Scopus citations

Abstract

A dc-to-dc converter using GaN power device is proposed. Active clamped forward technique is adopted in conjunction with synchronous rectification. The implementation of a low-side active clamp forward converter shows the ability to demagnetize the transformer,thus leading to the leakage inductance energy recovery,voltage surge suppression for switching devices,zero voltage switching realization; Additionally,the conduction loss is also reduced and improve efficiency due to the output synchronous rectification circuit. Finally,implement a dc to dc converter that meets the railway system applications specifications with an input voltage of $43\sim 160 V$,a full load output of 5 V/20A,and a switching frequency of 300 kHz for a 100 W circuit in order to verify the result of proposed converter. The experimental results of GaN FET and Si MOSFET are also compared with power conversion efficiency. The experimental results reveal that the maximum efficiency is 92.15% at 60% load and the full load efficiency is 90.5%.

Original languageEnglish
Title of host publication2021 IEEE International Future Energy Electronics Conference, IFEEC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665434485
DOIs
StatePublished - 2021
Externally publishedYes
Event2021 IEEE International Future Energy Electronics Conference, IFEEC 2021 - Taipei, Taiwan
Duration: 16 11 202119 11 2021

Publication series

Name2021 IEEE International Future Energy Electronics Conference, IFEEC 2021

Conference

Conference2021 IEEE International Future Energy Electronics Conference, IFEEC 2021
Country/TerritoryTaiwan
CityTaipei
Period16/11/2119/11/21

Bibliographical note

Publisher Copyright:
© 2021 IEEE.

Keywords

  • active clamp forward converter
  • GaN

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