Patent ID: 7492618

Claim:
An inverter device comprising: an inverter circuit including a bridge circuit connected between a positive electrode and a negative electrode of a direct-current power supply, the bridge circuit including an upper arm unit including an upper-arm switching element and an upper arm diode connected in reverse-parallel to each other; and a lower arm unit including a lower-arm switching element and a lower arm diode connected in reverse-parallel to each other, the lower arm unit being series connected with the upper arm unit; an inverter driving unit including a high-withstand-voltage IC that drives switching elements in the upper arm unit and the lower-arm unit, the high-withstand-voltage IC having a first terminal that is a lower-arm-driving reference power supply terminal for supplying a reference voltage to the switching element in the lower arm unit and a second terminal that is an upper-arm-driving reference power supply terminal for supplying a high-voltage to the switching element in the upper arm unit; and a clamp unit that clamps a potential difference between the first terminal and the second terminal, wherein the second terminal is not directly connected to the upper arm unit and the clamp unit is connected directly between the first terminal and the second terminal.