Patent ID: 8766331

Claim:
A power semiconductor module for use with a first power supply, a second power supply and a load, the power semiconductor module comprising: a case; a first circuit comprising a first IGBT and a first diode connected in opposite parallel to each other, the first circuit constituting an upper arm; a second circuit comprising a second IGBT and a second diode connected in opposite parallel to each other, the second circuit constituting a lower arm; an intermediate circuit comprising a first reverse blocking IGBT and a second reverse blocking IGBT connected in opposite parallel to each other; a control terminal, the control terminal being connected to gates of the first IGBT, the second IGBT, the first reverse blocking IGBT and the second reverse blocking IGBT; an output terminal connecting a third connection point, a collector of the first reverse blocking IGBT and an emitter of the second reverse blocking IGBT to each other; an intermediate terminal connecting a first connection point, an emitter of the first reverse blocking IGBT and a collector of the second reverse blocking IGBT to each other, the intermediate terminal configured to connect the first power supply and the second power supply in series to each other at the first connection point; a first end of the first circuit configured to be connected to a high-potential-side of the first power supply at a second connection point; a second end of the first circuit, the second circuit, and the intermediate circuit configured to be connected to the load at the third connection point; the second circuit configured to be connected to a low-potential-side of the second power supply at a fourth connection point; and the output terminal and the intermediate terminal overlapping each other in the case.