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Benefits of System-oriented IGBT Module Design for High Power Inverters

For the design of high power semiconductor module device focused considerations as well as system oriented aspects have to be taken into account. Some typical aspects to cover from the device point of view are internal current sharing between the paralleled dies, minimizing internal inductances and considering thermomechanical issues to provide sufficient useful lifetime regardless of the inherent CTE-mismatches of the different materials used. Typical system aspects to take care for during module design are to enable easy and efficient heatsinking, to provide means for a low inductance DC link connection and to consider that gate drive circuits need to be placed close to the control terminals. Further it is always an important issue in the high power range to allow easy parallel connection since changing to a bigger module isn’t an option any more.

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• 2007/11/07