Power converter and motor driving device using the same

A power converter comprising:

• an arm circuit including a high-voltage side switching device to which a first diode is connected in parallel and a low-voltage side switching device to which a second diode is connected in parallel;
• and
• a main power supply connected to a series circuit of the high-voltage side switching device and the low-voltage side switching device,
• wherein a connecting point between the high-voltage side switching device and the low-voltage side switching device is connected to a load, and a resonant frequency calculated from inductances of wirings of a closed circuit including the first diode, the second diode, and the main power supply and a first capacitance across the first diode is different from that calculated from the inductances of the wirings and a second capacitance across the second diode, and
• wherein inductors whose inductances are different from one another are connected to the first diode and the second diode in series respectively, the wiring includes any one of the inductors, and the first capacitance across the first diode and the second capacitance across the second diode are junction capacitances.