CONNECTION STRUCTURE OF SEMICONDUCTOR MODULE AND INVERTER

摘要

PROBLEM TO BE SOLVED: To enable a pair of semiconductor modules to be lessened in wiring capacitance. SOLUTION: In a semiconductor module 14A, composed of a pair of modules 17 and 18 arranged adjacent to each other, a second drain electrode 30 connects a first source electrode 24 of the semiconductor module 17 and a second drain electrode board 25 of a semiconductor module 18 together, where a current flowing through a vertical part 30b of the drain electrode 30 flows in parallel with and opposite to the flow direction to another current which flows through a vertical part 26b of a second source electrode 26 of the semiconductor module 18 arranged vertical to the second drain electrode board 25. Ribs 32a and 32b, which extend in the flow direction of a current flowing through a horizontal part 30a of the second drain electrode 30 along a bus electrode 13 are provided to the horizontal part 30a of the second drain electrode 30.