Sei Teil des Infineon Technologies Teams – Werde Doctoral Thesis: High current contact in power semiconductor modules (f/m/div)* in Warstein

Stellenausschreibung

The industrial doctorate at Infineon: Pursue a doctoral degree at a university and gain professional experience simultaneously - an ideal start for your career. Advance your research with us and profit from our vast network of doctoral candidates and the expertise of a university. Mentorship is handled by both professors and dedicated Infineon employees. We are offering a doctoral thesis dealing with the electrical optimization of high current contacts in power semiconductor modules. In power modules with currents > 500 A and voltages exceeding 1200 V, screw connections are used exclusively in the power path. They each contribute to an increase in inductance of about 10 nH on the DC link side. Up to now, mainly slow-switching IGBTs have been used in such modules. In the meantime, however, the much faster switching SiC components are also being used in these modules. Their short rise time in particular leads to overvoltages during switching. To limit these overvoltages, the inductance of the DC link connection must be optimized. A suitable electrical connection is to be worked out for this purpose. In addition, special focus is to be placed on the basic design of the insulation system for applications in a voltage range of 1.5 to 6.5 kV. Suitable electrical test procedures and methods of numerical modeling for electrical-mechanical-thermal behavior will be used to evaluate the overall system in order to ensure reliable operation for up to 20 years in the application. The thesis is written in cooperation with the University of Dresden and under the supervision of PD Dr.-Ing. habil. Stephan Schlegel.