[FAQ-GD-3] Can Wolfspeed C3M MOSFETs operate at Vgs(off)= 0V to be compatible with other suppliers?

TBhatia

Wolfspeed C3M MOSFET’s can be fully turned off at 0V. We recommend negative voltage turn-off for half bridge configuration where the cross talk can potentially cause parasitic turn-on under hard-switching condition. Negative turn-off voltage can guarantee the voltage spike on the gate will not go above the gate threshold voltage during switching transition so that there is no shoot through in half bridge configuration.

For common single switch topologies like Boost, Buck, Flyback converters or other topologies with no risk of parasitic turn-on, it is fine to use 0V for turn-off.