A Study on Equivalent Circuit Modeling of Common-Mode Noise Source for a Half-Bridge Power Module
Year: 2026
Type: conference-paper
Abstract: Power electronics systems require EMC (electromagnetic compatibility) design based on accurate modeling of noise sources and propagation paths to clarify the mechanisms of EMI (electromagnetic interference) generation and its propagation. This report studies the experimental evaluation of stray capacitances to ground and the modeling of common-mode noise sources for a half-bridge power module. The proposed model characterizes the transient behavior of the bridge output voltage and power device current during switching operation as noise sources, allowing their respective effects to be separated and analyzed. Furthermore, an impedance balance factor is derived based on an equivalent circuit model of the half-bridge circuit that includes stray capacitances to ground, and its applicability to noise-reduction design is investigated.
Authors: Takaaki Ibuchi, Tsuyoshi Funaki
Institution: The University of Osaka
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7223061251