A Low Winding Loss Magnetic Circuit Structure Design of Planar Inductor for GaN-based Totem-Pole PFC

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

Abstract

In recent years, power converters are increasingly moving towards high-efficiency, low losses and miniaturization. And the application of the wide-bandgap power semiconductor devices has further improved the operating frequency and efficiency of the power converter. PCB-based planar inductors are suitable for further reducing the volume of the power converter. But the increased operating frequency makes the low AC loss design of passive components at high frequency has become a bottleneck. By changing the path of leakage flux, a method of adding a low-permeability magnetic ring to the magnetic core is proposed to weak the increase in winding AC loss caused by the edge effect of the magnetic core. The results gained from the 3-D FEA simulations show that the AC resistance of the planar PCB inductor can be significantly reduced by 19.89%.

Original languageEnglish
Title of host publicationIEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages417-422
Number of pages6
ISBN (Electronic)9781665418515
DOIs
StatePublished - 2021
Event2021 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021 - Wuhan, China
Duration: 25 Aug 202127 Aug 2021

Publication series

NameIEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021

Conference

Conference2021 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021
Country/TerritoryChina
CityWuhan
Period25/08/2127/08/21

Keywords

  • AC winding loss
  • distributed magnetoresistance
  • fringing effects
  • high-frequency
  • planar inductor

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