Power conversion device

A power conversion device including:

• a plurality of switching elements that each have a gate electrode, a source electrode, and a drain electrode;
• a plurality of gate driver ICs configured to perform drive control of the plurality of switching elements, respectively;
• and
• a substrate on which the plurality of gate driver ICs are mounted,
• wherein the substrate includes:
• an insulating base having an obverse surface and a reverse surface that face mutually opposite sides in a thickness direction;
• and a conductive portion that is supported by the base,
• the conductive portion includes an obverse surface conductive layer arranged on the obverse surface and a reverse surface conductive layer arranged on the reverse surface,
• the obverse surface conductive layer includes:
• a first connection portion to which a control signal output terminal of one of the gate driver ICs;
• a second connection portion to which the gate electrode of a corresponding one of the switching elements;
• and a first wiring portion that is interposed between the first connection portion and the second connection portion,
• the power conversion device further comprises at least one obverse surface-side first electronic component that is mounted on the obverse surface and forms a circuit portion connecting the first connection portion and the second connection portion together with the first wiring portion,
• the first wiring portion is connected to no conductive member penetrating through the base in the thickness direction.