D22.11 - Design Consideration of a High-Current-Ripple Planar Inductor in Auxiliary Power Module with Ultra-Wide Voltage Range for Electric Vehicles

Thursday, March 26, 2026

12:00 PM - 1:45 PM CT

Location: Poster 11

Technical Dialogue Presenter(s)

YZ

Yicheng Zhang

University of Tennessee

Co-Author(s)

MK

Mohammad Slaeh Khan

University of Tennessee
DC

Daniel J. Costinett

University of Tennessee
University of Tennessee Knoxville
AB

Alan Brown

University of Tennessee
HB

Hua Bai

University of Tennessee Knoxville

Planar magnetics have been widely used for power electronic converters due to the low profile, high-power density. However, the design of a high-ripple-current inductor remains challenging, given the use of multiple PCB layers substantially increases AC resistance due to proximity effects. This paper presents the design consideration for high-ripple current inductors with strict space limitations. The design specifications are followed by a method to select an appropriate core structure. Different terminal configurations are compared to achieve higher efficiency. The final inductor demonstrated efficiency of 99%, with a power density of 133.3 kW/L.