Patent ID: 7453292

Claim:
A resonant gate drive circuit for controlling operation of at least one power switching device having a gate capacitance, comprising: a first input terminal for receiving a supply voltage; a first current source having a first terminal and a second terminal; a second current source having a first terminal and a second terminal; wherein the second terminal of the first current source and the first terminal of the second current source are connected together at a node, the at least one power switching device being connected to the first terminal of the first current source or the second terminal of the second current source; and a plurality of switches that direct the flow of current from the first current source and the second current source, to charge and discharge the gate capacitance of the at least one power switching device, and that connect the gate capacitance of the at least one power switching device to a voltage higher than the supply voltage or to a low voltage, at a selected instant in time; wherein operation of the at least one power switching device is controlled.