Power conversion device with a voltage generation part that is configured to supply current to a sense diode and a sense resistor in select situations

A power conversion device, comprising:

• a diode built-in transistor configured to include
• a transistor configured to be driven by a drive signal input into a gate,
• a diode configured to be connected in parallel with the transistor, and to have a forward direction from an emitter to a collector of the transistor, and
• a sense diode configured to detect a current flowing in the diode, and to have a cathode connected with the collector of the transistor;
• a voltage generation part configured to generate, in a case where the diode does not conduct electricity, a voltage between an anode of the diode and an anode of the sense diode, the voltage having a predetermined or greater difference with respect to a case where the diode conducts electricity, wherein the voltage generation part includes
• a sense resistor configured to be provided between the anode of the sense diode and the anode of the diode, and
• a current supplying part configured to be directly connected with the anode of the sense diode and the sense resistor, and to supply a current to the sense diode in the case where the diode conducts electricity, and supplying a current to the sense resistor in the case where the diode does not conduct electricity;
• and
• a determination part configured to determine whether the diode conducts electricity, based on the voltage between the anode of the diode and the anode of the sense diode.