Gate drive circuit

Abstract

A gate drive circuit includes a turn-on side circuit for turning on a gate of a power switching device, the turn-on side circuit including a first turn-on side power supply circuit and a second turn-on side power supply circuit, the first turn-on side power supply circuit including: a first turn-on voltage source for supplying a first turn-on voltage; first turn-on wiring; and a first turn-on switch connected in the first turn-on wiring and controlled by a gate drive signal; and the second turn-on side power supply circuit including: a second turn-on voltage source for supplying a second turn-on voltage applied to the gate of the power switching device to set the power switching device in a steady (on) state; second turn-on wiring; a second turn-on switch connected in the second turn-on wiring; and a turn-on side delay circuit for delaying the gate drive signal and passing it to the second turn-on switch.

Dependencies are inferred from the claim text.