Well-tempered combination of ultra-high voltage IGBT and diode rated 6.5kV

For High Voltage IGBT (HV-IGBT), it is required that a good matching with Free Wheeling Diode (FWD) is considered because of the latter's high transient forward voltage. Therefore, we studied transient characteristics of the free wheel mode in HV-IGBT and FWD paired operation by computer simulation and experiment, and optimized design aspects of HV-IGBT/FWD combination, rated 6.5kV, to achieve very low forward voltage drop, low Eon and Eoff, and a wide Safety Operational Area (SOA).

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[2]  Yoshifumi Tomomatsu,et al.  An analysis for transient characteristics of shorted collector IGBTs in free wheeling mode of operation , 1997, Proceedings of 9th International Symposium on Power Semiconductor Devices and IC's.