Denso Corporation

Hiroki Kiyose

Masayoshi Nishihata

Nobumasa Ueda

A semiconductor device includes: a plurality of control modules that controls a rotating electric machine. Each control module includes at least two sets of arms, each set including high-side and low-side switching elements that provide an inverter. A plurality of arms of each control module are coupled in parallel to each other with respect to a bus bar coupled to one power source. Each control module includes a metal plate on which the high-side and low-side switching elements are mounted, and mediates an electric coupling with the power source. Each metal plate includes a first metal plate on which one set of arms is disposed, a second metal plate on which another set of arms is disposed, and a coupling plate that couples the first and second metal plates.

Semiconductor device

A semiconductor device includes: a plurality of control modules to control a rotating electric machine. The plurality of control modules are circularly arranged around a rotary shaft of the rotating electric machine. Each control module includes at least one switching element supplied with a current from a bus bar coupled to a power source. The at least one switching element in one of the control modules under a structural condition of arrangement has a lower resistance than another switching element.

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Kariya, Japan

Hiroki Kiyose