Patent ID: 8928368
Filing Date: 2015-01-06
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 the first hybrid NOEMI circuit includes a second p-channel MOSFET and a third n-channel MOSFET connected in parallel to each other, the second hybrid NOEMI circuit includes a second n-channel MOSFET and a third p-channel MOSFET connected in parallel to each other, each of a gate of the second n-channel MOSFET and a gate of the third n-channel MOSFET is connected to a first terminal, each of a gate of the second p-channel MOSFET and a gate of the third p-channel MOSFET is connected to a second terminal, a source of the second p-channel MOSFET is connected to the drain of the first p-channel MOSFET, a source of the third n-channel MOSFET is connected to the drain of the first n-channel MOSFET, a source of the first p-channel MOSFET is connected to the first terminal, a source of the first n-channel MOSFET is connected to the second terminal, a gate of the first p-channel MOSFET and a gate of the first n-channel MOSFET are connected to an input terminal to which an input signal is input, and a connection point of a drain of the second p-channel MOSFET and a drain of the third n-channel MOSFET is connected to an output terminal through a resistor, the output terminal being connected to a gate of the insulated gate switching element.