Patent ID: 6268754
Filing Date: 2001-07-31
Classification: H03K

Abstract:
A gate driving circuit for power semiconductor switch in a pulse mode comprising:a DC voltage source having first and second output terminals, said first output terminal being connected to a main electrode of a power semiconductor switch;a series circuit of a reactor and a first switching element, said series circuit being connected across the main electrode and a gate of the power semiconductor switch;a second switching element connected across the gate of the power semiconductor switch and said second output terminal of the DC voltage source; anda control circuit for controlling said first and second switching elements such that said power semiconductor switch is kept in non-conductive by making said first and second switching elements in off-state and in on-state, respectively, upon turning-on the power semiconductor switch, after storing energy in said reactor by changing said first switching element from off-state into the on-state, the energy stored in the reactor is discharged abruptly into the gate of the power semiconductor switch by changing said second switching element from the on-state into the off-state.