Stray Inductance Extraction Methods for Power Modules: A Comprehensive Review and Analysis
- 21 January 2025
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Electronics
- Vol. 40 (6) , 8016-8035
Abstract
The stray inductance of the commutation circuit significantly impacts power semiconductor device switching. This article presents a comprehensive investigation on stray inductance extraction in half-bridge power modules. After reviewing existing methods including electromagnetic simulation, switching transient extraction, and static measurement, we propose a novel perspective that identifies six distinct commutation paths from the distinct positioning of diodes and active switches. Our findings reveal 9%–17% differences in stray inductance across these paths, highlighting the importance of path-specific analysis for precise extraction. We further supplement direct impedance measurement approaches to vector network analyzer-based measurements, and analyze the limitations of fixture compensation. These perspectives provide new insights and guidance into high-precision stray inductance characterization for power electronics applications.Keywords
Funding Information
- National Natural Science Foundation of China (52277189)
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