Interleaved Flyback Converter with GaN Power Devices

Guan Shiun Wang, Tsorng-Juu Liang, Jian Hao Lai

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

Abstract

In this thesis, a high output current DC-DC converter with wide input voltage range based on GaN device is implemented. Generally, the volume of converter can be reduced and power density can be improved with higher switching frequency. However, the switching losses will be increased at the higher switching frequency conditions. Therefore, the characteristic of the wide band-gap device with fast switching is applied to reduce switching losses. The topology of an interleaved flyback converter with leakage inductance energy recycled is selected in this thesis. Two series capacitors are connected with input side and the voltage of each capacitor is half of input voltage. Besides, the energy stored in leakage inductance can be recycled to these two capacitors through the clamp diodes. Moreover, the system efficiency can be improved with the interleaved control method and the synchronous rectification technique. Finally, an interleaved flyback with leakage inductance energy recycled based on GaN device is implemented. The specifications of the input voltage range and output are 18V DC to 60 V DC and 5 V/30 A, respectively. The highest efficiency is 94.2% at the light load condition.

Original languageEnglish
Title of host publicationProceedings - 2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538660539
DOIs
Publication statusPublished - 2018 Dec 26
Event2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018 - Shenzhen, China
Duration: 2018 Nov 42018 Nov 7

Publication series

NameProceedings - 2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018

Other

Other2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018
CountryChina
CityShenzhen
Period18-11-0418-11-07

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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  • Cite this

    Wang, G. S., Liang, T-J., & Lai, J. H. (2018). Interleaved Flyback Converter with GaN Power Devices. In Proceedings - 2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018 [8589969] (Proceedings - 2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PEAC.2018.8589969