High power density IGBT module for high reliability applications

The blocking voltage rating of an IGBT module have reached up to 6.5 kV, however for true high power application such as traction drives, the current rating has to increase as well. This is mainly achieved by either improving the packing density of semiconductor chips per given module footprint and or improving the current density of the semiconductor chips used in the IGBT module. In this paper we explore how the current ratings of an 800 A, 3.3 kV module with 140times130 mm footprint can be improved for a fixed base-line reliability.