Patent ID: 11942869
Assignee: DENSO CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A power module applied to an electric power conversion device in which a plurality of upper-lower arm circuits are connected to an electric power line in parallel, the power module comprising:
the plurality of upper-lower arm circuits;
a capacitor connected to each of the plurality of upper-lower arm circuits in parallel;
an upper wiring that connects an upper arm configuring each of the plurality of upper-lower arm circuits and a positive electrode terminal of the capacitor;
a lower wiring that connects a lower arm configuring each of the plurality of upper-lower arm circuits and a negative electrode of the capacitor;
an upper electric power wiring that is an electric power wiring connected to the electric power line and connects a high potential line of the electric power line and the upper wiring;
a lower electric power wiring that is an electric power wiring connected to the electric power line and connects a lower potential line of the electric power line and the lower wiring;
the upper wiring includes a first wiring portion from a connection point with a corresponding electric power wiring to a corresponding arm of the upper-lower arm circuit and a second wiring portion from the connection point to a terminal corresponding to the capacitor;
the lower wiring includes a first wiring portion from a connection point with a corresponding electric power wiring to a corresponding arm of the upper-lower arm circuit and a second wiring portion from the connection point to a terminal corresponding to the capacitor; and
in at least one of the upper wiring or the lower wiring, a wiring resistance of the first wiring portion is smaller than a wiring resistance of the second wiring portion.