Semiconductor module

Abstract

A semiconductor module is provided with three-phase upper arms (51, 53, 55) and lower arms (52, 54, 56), heat-dissipating plates (11, 12), a main circuit-side bus bar, an output terminal-side bus bar, a control terminal (14), and a resin mold part (18). The output terminal-side bus bar has U-phase to W-phase wiring layers (133-135) layered and arranged facing each other interposed by an insulating layer (130), and U-W terminals (13c-13e) for electrically connecting each of the U-phase to W-phase wiring layers and a load. There are an even number of U-phase to W-phase wiring layers.

Description

[0001] Cross-references to related applications [0002] This indication is based on the Japanese application number 2014-91148 for which it applied on April 25, 2014, and uses the description content here. technical field [0003] The present disclosure relates to a semiconductor module including a semiconductor switching element. Background technique [0004] Patent Document 1 proposes a structure capable of reducing the influence of noise in a power conversion device including a semiconductor module. In this power conversion device, a structure is adopted in which the input / output terminals drawn from the semiconductor module, the control terminals, and the control board are connected with the shortest distance. Thereby, the inductance of the main circuit (main circuit inductance) via the input / output terminal and the control terminal path inductance via the control terminal can be reduced, and the influence of noise can be reduced. [0005] However, in the semiconducto...

AI Technical Summary

Problems solved by technology

[0005] However, in the semiconductor module disclosed in Patent Document 1, even if the distance between the input and output terminals and the control board and the distance between the control terminals and the control board are minimized, it does not take into account the distance between the input and output terminals and the input Distance between output terminal and control terminal, etc.

For example, if the distance between the positive terminal and the negative terminal as the main terminal corresponding to the input terminal for current input among the input and output terminals is long, the inductance of the main circuit will increase.

In addition, if the distance between the main terminal and the AC input terminal connected to a load such as a motor corresponding to the output terminal among the input and output terminals is long, this path becomes a source of noise.

Furthermore, these are the main factors, and the low inductance of the large current path for supplying current to the load becomes insufficient, and the surge accompanying high-speed operation cannot be suppressed.

In addition, for example, if the distance between the input / output terminal and the control terminal is short, an error may occur due to a surge, and the semiconductor switching element may be turned on or off (hereinafter referred to as erroneous turn-on or erroneous turn-off) to malfunction.

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