Deformation Measurements during Active Operation of Power Modules with Novel Assembly and Packaging Technology

Conference: CIPS 2020 - 11th International Conference on Integrated Power Electronics Systems
03/24/2020 - 03/26/2020 at Berlin, Deutschland

Proceedings: ETG-Fb. 161: CIPS 2020

Pages: 6Language: englishTyp: PDF

Schiffmacher, Alexander; Qelibari, Arben; Wilde, Juergen (Department of Microsystems Engineering – IMTEK, University of Freiburg, Germany)
Rudzki, Jacek; Osterwald, Frank (Danfoss Silicon Power GmbH, Flensburg, Germany)

This work shows a study of the mechanical behaviour of the semiconductor and the supporting structures in power modules during operation using optical measurement techniques. Different operating conditions (ton, toff, IC, VGE) are compared to identify the in-plane strain and out-of-plane curvature. The results are correlated with thermographic images in order to show dependencies of the temperature distribution. The results are intended to contribute to a better and fundamental understanding of the thermal-mechanical deformations during active operation. Therefore, electrical parameters, temperatures and displacements are correlated on the basis of the presented in situ test scheme.