Patent ID: 8742802
Filing Date: 2014-06-03
Classification: H03K

Abstract:
1. A gate driving circuit for driving an insulated gate switching element, comprising: a gate charging circuit configured to charge gate capacitance of the insulated gate switching element, the gate charging circuit including a gate discharging circuit, connected in series with the gate charging circuit, configured to discharge a charge of the gate capacitance, the gate discharging circuit including a drain of the second n-channel MOSFET is connected in series with a drain of the second p-channel MOSFET, a source of the first p-channel MOSFET is connected to a first terminal, a source of the first n-channel MOSFET is connected to a second terminal, a gate of the second p-channel MOSFET is connected to the second terminal, a gate of the second n-channel MOSFET is connected to the first terminal, a gate of the first p-channel MOSFET and a gate of the first n-channel MOSFET are connected to each other, a connection point of the gate of the first p-channel MOSFET and the gate of the first n-channel MOSFET is connected to an input terminal, and a connection point of the drain of the second p-channel MOSFET and the drain of the second n-channel MOSFET is connected to an output terminal.