| 摘要 |
PROBLEM TO BE SOLVED: To reduce voltage fluctuation noise when one driving transistor is turned on while suppressing an increase in time to turn on the other driving transistor.SOLUTION: A gate drive circuit 5 for driving a driving transistor T2 includes a CMOS circuit 9 and a turn-off resistance R1. The CMOS circuit 9 feeds an on voltage for turning on the driving transistor T2 or an off voltage for turning it off between a gate and a source of the driving transistor T2 on the basis of a control signal Sb. The CMOS circuit 9 includes a turn-on transistor M1 adapted to be turned on to turn on the driving transistor T2, and a turn-off transistor M2 adapted to be turned on to turn it off. The turn-off resistance R1 is interposed in a conduction path extending from an output node N3 of the CMOS circuit 9 to the source of the driving transistor T2 via the turn-off transistor M2. |
