T10.7 - Comprehensive SPICE Model for Inductors Considering Magnetic Losses Under DC Bias Current

Wednesday, March 19, 2025

11:00 AM – 11:20 AM ET

Location: Level Three, A301

Technical Lecture Presenter(s)

Yuki Sato, PhD

Aoyama Gakuin University

Presentation Paper

Co-Author(s)

HM

Hirokazu Matsumoto

Aoyama Gakuin University
JK

Junichi Kotani

Panasonic Industry Co. Ltd.
ST

Shohei Tomioka

Panasonic Industry Co. Ltd.
KT

Kenichiro Tanaka

Panasonic Industry Co. Ltd.

This paper presents a SPICE model for inductors that accurately represents magnetic loss under DC current conditions. The proposed circuit enhances the accuracy of frequency response and loss characteristics by introducing a parameter dependent on DC current and a resonance circuit to account for parasitic capacitance. This methodology was validated using a power inductor and demonstrated precise inductor loss analysis. Additionally, the inductor loss evaluation is compared that with a method based on improved Generalized Steinmetz Equation.