A Sequential Finite Volume Method / Finite Element Analysis of a Power Electronic Semiconductor Chip

Research output: Contribution to conferencePaperResearchpeer-review

Authors

  • P.F. Fuchs
  • Martin Pfost
  • I. Mitev
  • Qi Tao
  • Thomas Krivec
  • Angelika Schingale
  • Michael Decker

Organisational units

External Organisational units

  • CPT Group GmbH
  • Polymer Competence Center Leoben GmbH
  • AT and S AG

Abstract

The shift of the automotive industry towards e-mobility results in a strong demand for highly reliable power electronics. A major goal in their design is to improve the thermal management of all components. Most commonly power electronics are subject to high temperature loads, either internally generated by an active part (semiconductor) or externally applied. Depending on the materials used, such as metals, polymers, etc., thermo-mechanical stresses will arise and promote different failure mechanisms. The complexity of the loading situation, especially in the case of internally generated loads, calls for a sequential approach, consisting of a Finite Volume Method (FVM) and a Finite Element Analysis (FEA) for the lifetime assessment of these components. Using this methodology, the highly complex temperature distribution of any power package can be determined. Consequently, accurate results for the thermo-mechanical stress situation from chip to power packages are deduced and critical spots are identified. Based on the obtained stress fields, an enhanced lifetime assessment of power packages can be performed. The proposed methodology is validated on a standard TO-263 package for a short circuit loading scenario.

Details

Original languageEnglish
Pages1509-1514
DOIs
Publication statusPublished - 2019
Event69th IEEE Electronic Components and Technology Conference, ECTC 2019 - Las Vegas, United States
Duration: 28 May 201931 May 2019

Conference

Conference69th IEEE Electronic Components and Technology Conference, ECTC 2019
Country/TerritoryUnited States
CityLas Vegas
Period28/05/1931/05/19