Driver device
AssigneeMitsubishi Electric Corporation
InventorKazuaki Hiyama
Life of this patent
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Abstract
An object is to provide a technique capable of optimizing the turn-on speed. A driver device includes a gate drive circuit power supply capable of changing an output voltage; a power supply having a fixed voltage lower than the output voltage; a control unit that changes the output voltage of the gate drive circuit power supply on the basis of related information related to a load current of the semiconductor switching element; and a delay circuit that, when the gate drive signal is turned on, performs control to supply the fixed voltage to a gate of the semiconductor switching element for a predetermined period, and then performs control to supply the output voltage to the gate.
Claims3
A driver device that drives a semiconductor switching element based on on and off of a gate drive signal, the driver device comprising:
- a gate drive circuit power supply capable of changing an output voltage;
- a power supply having a fixed voltage lower than the output voltage;
- a controller that changes the output voltage of the gate drive circuit power supply on a basis of related information related to a load current of the semiconductor switching element;
- and
- a delay circuit that, when the gate drive signal is turned on, performs control to supply the fixed voltage to a gate of the semiconductor switching element for a predetermined period, and then performs control to supply the output voltage to the gate.
Dependencies are inferred from the claim text.