6.5 kV-modules using IGBTs with field stop technology

A new 6.5 kV field stop IGBT/diode chipset is presented with a large safe operating area for 600 A module applications. The IGBT cell design and the vertical field stop structure is optimized with respect to a low on state voltage and low short circuit current. The turn on, turn off and short circuit ruggedness are experimentally demonstrated at 4.4 kV line voltage and 125/spl deg/C temperature. The turn off behavior is verified at the twofold nominal current.