Switching Drive Device

A switching drive device that supplies a drive voltage or a drive current to a gate terminal of a semiconductor device, the switching drive device comprising:

• a first circuit that includes a turn-on resistor and a first switching element and charges the gate terminal when the semiconductor device is turned on;
• a second circuit that includes a turn-off resistor and a second switching element and discharges the gate terminal when the semiconductor device is turned off;
• a third circuit that is connected to the gate terminal, includes a gate resistor and a third switching element, and discharges or charges the gate terminal;
• and
• a control device that controls on/off of the first to third switching elements,
• wherein the control device
• controls charging by the first circuit and discharging or charging by the third circuit when the semiconductor device is turned on to execute a first turn-on operation mode, and then executes a second turn-on operation mode having a lower speed than the first turn-on operation mode, and
• controls discharging by the second circuit and discharging or charging by the third circuit when the semiconductor device is turned off to execute a first turn-off operation mode, and then executes a second turn-off operation mode having a lower speed than the first turn-off operation mode.