Selected Problems of Power MOSFETs Thermal Parameters Measurements

Krzysztof Górecki and Krzysztof Posobkiewicz
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Krzysztof Górecki: Department of Marine Electronics, Gdynia Maritime University, 81-225 Gdynia, Poland
Krzysztof Posobkiewicz: Department of Marine Electronics, Gdynia Maritime University, 81-225 Gdynia, Poland

Energies, 2021, vol. 14, issue 24, 1-22

Abstract: In the paper, selected problems that are related to the measurements of thermal parameters of power MOSFETs that are placed on a common heat sink are analysed. The application of the indirect electrical method, the contact method, and the optical method in measuring self and mutual transient thermal impedances of these transistors is presented. The circuits that are required to perform measurements are presented and described. The errors of measurements are assessed for each of the considered methods. In the case of the indirect electrical method, an additional influence of the selection of a thermo-sensitive parameter and the function approximating thermometric characteristics on the measurement error are taken into consideration. The measurement results of the thermal parameters of the investigated transistors that were obtained using the considered measurement methods in various supply conditions are presented and discussed.

Keywords: thermal resistance; transient thermal impedance; thermal parameters; power MOSFETs; measurements (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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