Patent ID: 9130476
Filing Date: 2015-09-08
Classification: H02M

Abstract:
1. A power semiconductor module, applied to a multi-level converter circuit with three or more levels of voltage waveform, the converter circuit including a first IGBT and a second IGBT connected in series between a positive side potential and a negative side potential of a DC power supply equipped with a positive side potential, a negative side potential and an intermediate point potential, with a third IGBT and a fourth IGBT, each forming a bidirectional switch connected between the intermediate point potential of the DC power supply and the series connection point of the first IGBT and the second IGBT, the semiconductor module comprising: a module package; the first IGBT; and the fourth IGBT, wherein a diode is reverse parallel connected to the first IGBT and the fourth IGBT has a reverse blocking voltage, with an emitter of the fourth IGBT being connected to an emitter of the first IGBT, wherein the first IGBT, the fourth IGBT and the diode are housed in the module package, and wherein each of the collector of the first IGBT, the collector of the fourth IGBT, and connection points of the emitter of the first IGBT and the emitter of the fourth IGBT, is an external terminal on a side of the module package.