A power conversion device, comprising: a first current detector; a second current detector connected between the first current detector and a first power supply terminal, a connection point between the first current detector and the second current detector being a ground potential; a power factor correction circuit including: a coil having a first end connected to the first power supply terminal through the first and second current detectors connected in series, a first semiconductor switch with a first terminal connected to a second end of the coil, a second semiconductor switch with a first terminal connected to the second end of the coil, a first diode with a cathode connected to a second terminal of the first semiconductor switch and an anode connected to a second power supply terminal, a second diode with an anode connected to a second terminal of the second semiconductor switch and a cathode connected to the second power supply terminal, and a smoothing capacitor connected in parallel with the first and second diodes and connected between the cathode of the first diode and the anode of the second diode; and a control circuit configured to turn the first and second semiconductor switches on or off based on a current detection of the first current detector and a current detection of the second current detector. a first current detector; a second current detector connected between the first current detector and a first power supply terminal, a connection point between the first current detector and the second current detector being a ground potential; a power factor correction circuit including: a coil having a first end connected to the first power supply terminal through the first and second current detectors connected in series, a first semiconductor switch with a first terminal connected to a second end of the coil, a second semiconductor switch with a first terminal connected to the second end of the coil, a first diode with a cathode connected to a second terminal of the first semiconductor switch and an anode connected to a second power supply terminal, a second diode with an anode connected to a second terminal of the second semiconductor switch and a cathode connected to the second power supply terminal, and a smoothing capacitor connected in parallel with the first and second diodes and connected between the cathode of the first diode and the anode of the second diode; and a coil having a first end connected to the first power supply terminal through the first and second current detectors connected in series, a first semiconductor switch with a first terminal connected to a second end of the coil, a second semiconductor switch with a first terminal connected to the second end of the coil, a first diode with a cathode connected to a second terminal of the first semiconductor switch and an anode connected to a second power supply terminal, a second diode with an anode connected to a second terminal of the second semiconductor switch and a cathode connected to the second power supply terminal, and a smoothing capacitor connected in parallel with the first and second diodes and connected between the cathode of the first diode and the anode of the second diode; and a control circuit configured to turn the first and second semiconductor switches on or off based on a current detection of the first current detector and a current detection of the second current detector.