Electrical characterizations and evaluation of thermo-mechanical stresses of a power module dedicated to high temperature applications

L. Dupont, Z. Khatir, S. Lefebvre, R. Meuret, B. Parmentier, S. Bontemps

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

In avionic area, the trend is to a growing use of power electronics systems. In this context, we will present results concerning test vehicles (power modules) in order to improve a device assembly technology dedicated to be located "on the engine", in harsh operating conditions with thermal cycling from -50°C to 200°C in the worst case. The paper focuses on failure modes observed under high operating temperature and high temperature cycles, especially ceramic cracks, conchoidal fracture under the copper lead-frame and solder crack initiation. Numerical thermo-mechanical simulations of the assembly allow to understand the origin of the failures and to improve the assembly lifetime under such severe operating conditions. The objectives of the study are to assess the lifetime behaviour of these modules towards both high temperature and thermal cycling effects.

Original languageEnglish
Title of host publication2005 European Conference on Power Electronics and Applications
Publication statusPublished - 1 Dec 2005
Externally publishedYes
Event2005 European Conference on Power Electronics and Applications - Dresden, Germany
Duration: 11 Sep 200514 Sep 2005

Publication series

Name2005 European Conference on Power Electronics and Applications
Volume2005

Conference

Conference2005 European Conference on Power Electronics and Applications
CountryGermany
CityDresden
Period11.9.0514.9.05

ASJC Scopus subject areas

  • Engineering(all)

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