Patent ID: 7148562

Claim:
A power semiconductor module, comprising: a radiating block having a front surface; and a plurality of power semiconductor devices, wherein said plurality of power semiconductor devices are arranged on said front surface of the same radiating block, said plurality of power semiconductor devices each comprise: a conductive terminal board having a front surface and a back surface; a plurality of power semiconductor chips arranged on said front surface of said terminal board; and an insulating layer disposed on said back surface of said terminal board, wherein in each of said plurality of power semiconductor devices, said radiating block is in contact with said insulating layer so as to be insulated from said terminal board with said insulating layer interposed therebetween, said plurality of power semiconductor chips are arranged to be separated from one another with a free space of said terminal board interposed between adjacent two, and said radiating block is in contact with said insulating layer and said insulating layer is in contact with said back surface of said terminal board at least below respective arrangement regions of said plurality of power semiconductor chips and respective regions between said plurality of power semiconductor chips.