Semiconductor module

摘要

A semiconductor module is provided with a high potential wiring, an output wiring, a low potential wiring, an upper arm switching device, an upper arm diode, a lower arm switching device, and a lower arm diode. A ratio of steady loss to switching loss of the upper arm switching device is configured to be smaller than a ratio of steady loss to switching loss of the lower arm switching device. Further, a ratio of steady loss to switching loss of the upper arm diode is configured to be smaller than a ratio of steady loss to switching loss of the lower arm diode.

主权项

1. A semiconductor module comprising:
a first wiring; a second wiring; a third wiring; an upper arm switching device connected between the first wiring and the second wiring; a lower arm switching device connected between the second wiring and the third wiring; an upper arm diode connected between the first wiring and the second wiring such that the first wiring is connected to a cathode side; and a lower arm diode connected between the second wiring and the third wiring such that the second wiring is connected to a cathode side, wherein at least one of the following (a) and (b) is satisfied: (a) a ratio of steady loss to switching loss of the upper arm diode is smaller than a ratio of steady loss to switching loss of the lower arm diode; (b) a ratio of steady loss to switching loss of the upper arm switching device is smaller than a ratio of steady loss to switching loss of the lower arm switching device.