<p>An inverter device includes a switching circuit having a plurality of series circuits, each having an IGBT at the upstream side and a MOSFET at the downstream side along the voltage application direction. A connection point between the IGBT and the MOSFET in these series circuits is connected to a load. A multi-phase electric communication for turning ON/OFF the IGBT of at least one series circuit and turning ON the MOSFET of another at least one series circuit among the series circuits is successively switched.</p>
