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Journal Article
Power Module Stray Inductance Extraction: Theoretical and Experimental Analysis
- Authors
- Dong Yun Jung, Hyun Gyu Jang, Doohyung Cho, Sungkyu Kwon, Jong Il Won, Seong Hyun Lee, Kun Sik Park, Jong-Won Lim, Joung Hwan Bae, Yun Hwa Choi
- Issue Date
- 2021-10
- Citation
- ETRI Journal, v.43, no.5, pp.891-899
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- We propose a stray inductance extraction method on power modules of the few-kilovolts/several-hundred-amperes class using only low voltages and low currents. The method incorporates a double-pulse generator, a level shifter, a switching device, and a load inductor. The conventional approach generally requires a high voltage of more than half the power module's rated voltage and a high current of around half the rated current. In contrast, the proposed method requires a low voltage and low current environment regardless of the power module's rated voltage because the module is measured in a turn-off state. Both theoretical and experimental results are provided. A physical circuit board was fabricated, and the method was applied to three commercial power modules with EconoDUAL3 cases. The obtained stray inductance values differed from the manufacturer-provided values by less than 1.65 nH, thus demonstrating the method's accuracy. The greatest advantage of the proposed approach is that high voltages or high currents are not required.
- KSP Keywords
- Circuit Board, Double-pulse, Extraction method, High Voltage, High current, Inductance extraction, Level shifter, Low current, Off-State, Pulse Generator, Stray inductance
This work is distributed under the term of Korea Open Government License (KOGL)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
