DRIVING CIRCUIT FOR TRANSISTOR

摘要

PROBLEM TO BE SOLVED: To overcome a trade-off relationship between a surge voltage and a turn-off loss that exists within a transition time period for turning off a transistor, in a circuit for driving the transistor.

SOLUTION: A driving circuit 10 comprises a variable resistor R12 that is electrically connected to a gate electrode G of a transistor 20. A width of a current path of the variable resistor R12 is controlled by a depletion layer which is expandable in accordance with a drain-source voltage Vds of the transistor 20.

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