Gate driver
AssigneeSanken Electric Co., Ltd.
InventorsOsamu Machida, Shinji Sato
Life of this patent
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Abstract
A gate driver turns on/off a switching element Q1 by applying a control signal from a controller to a gate of the switching element. The switching element has the gate, a drain, and a source and contains a wide-bandgap semiconductor. The gate driver includes a parallel circuit that includes a first capacitor C1 and a first resistor R1 and is connected between the controller and the gate of the switching element and a short-circuit unit S4 that is connected between the gate and source of the switching element and short-circuits the gate and source of the switching element after a delay from an OFF pulse of the control signal.
Claims7
A gate driver for turning on/off a switching element by applying a control signal of a controller to a gate of the switching element, the switching element having the gate, a drain, and a source and containing a wide-bandgap semiconductor, the gate driver comprising:
- a parallel circuit of a first capacitor and a first resistor being connected between the controller and the gate of the switching element;
- and
- a short-circuit unit connected between the gate and source of the switching element configured to shunt the gate and source of the switching element after a delay from an OFF pulse of the control signal.
Dependencies are inferred from the claim text.