Gate charge and switching loss — the 79 nC figure
Total gate charge is 79 nC at Vgs = 10 V. For a hard-switched 100 kHz PFC, that gate charge translates to about 7.9 mA average gate drive current — well within the SOA of a standard MOSFET driver, but the peak current capability of the driver still needs to charge this capacitance fast enough to keep the switching transition clean. Input capacitance Ciss is 3194 pF at Vds = 400 V. This is the Miller plateau capacitance that the driver sees during the switching transition; the ratio of Ciss to Cgd determines whether the device exhibits a Miller turn-on risk in a half-bridge configuration.
Thermal budget in a surface-mount HDSOP-10
Rated for 61 A continuous drain current at a 25 °C case temperature, with a maximum power dissipation of 379 W at Tc = 25 °C. The 61 A figure assumes the case is held at 25 °C — real-world derating is substantial.
The series is CoolMOS™ CFD7, Infineon's 600 V superjunction family optimised for hard-switching topologies.