Investigation and Optimization for Planar Coupled Inductor dual-phase interleaved GaN-based Totem-Pole PFC

Yunfeng Liu*, Mingxiao Li, Yi Dou, Ziwei Ouyang, Michael A.E. Andersen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


This paper presents the comparison among different coupled inductors for the GaN-based critical mode (CRM) Totem-Pole PFC. The flux linkage and flux density are deduced both for the positive coupled inductor and the negative coupled inductor. The interleaving layout winding also has been researched for dual-phase coupled inductors. It also investigates both the winding loss and core loss of different coupled inductors. The result shows that the negative coupled planar inductor employing interleaving winding layout can achieve the smallest power loss. Furthermore, a simplified digital control strategy that can make the control design easy to implement for CRM Totem Pole PFC has been proposed and finally it was evaluated by a 1kW MHz dual-phase interleaved Totem-Pole PFC converter prototype.

Original languageEnglish
Title of host publicationProceedings of 35th Annual IEEE Applied Power Electronics Conference and Exposition
Publication dateMar 2020
Article number9124069
ISBN (Electronic)9781728148298
Publication statusPublished - Mar 2020
Event35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020 - New Orleans, United States
Duration: 15 Mar 202019 Mar 2020


Conference35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020
CountryUnited States
CityNew Orleans
SponsorIEEE, IEEE, Power Sources Manufacturers Association


  • Coupled inductor
  • CRM Totem Pole PFC
  • Digital control
  • Flux linkage
  • GaN device
  • Interleaving winding
  • ZCD signal

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