US Patent No. 10,512,181

POWER SEMICONDUCTOR DEVICE AND POWER CONVERSION DEVICE


Patent No. 10,512,181
Issue Date December 17, 2019
Title Power Semiconductor Device And Power Conversion Device
Inventorship Tokihito Suwa, Hitachinaka (JP)
Yujiro Kaneko, Hitachinaka (JP)
Yusuke Takagi, Hitachinaka (JP)
Shinichi Fujino, Mito (JP)
Takahiro Shimura, Mito (JP)
Assignee Hitachi Automotive Systems, Ltd., Hitachinaka-shi (JP)

Claim of US Patent No. 10,512,181

1. A power semiconductor device, comprising:a first power semiconductor element constituting an upper arm of an inverter circuit;
a second power semiconductor element constituting a lower arm of the inverter circuit;
a first conductor plate on which the first power semiconductor element is connected through a first metal bonding material;
a second conductor plate that faces the first conductor plate with the first power semiconductor element sandwiched therebetween;
a third conductor plate on which the second power semiconductor element is connected through a second metal bonding material;
a fourth conductor plate that faces the second conductor plate with the second power semiconductor element sandwiched therebetween;
a DC positive terminal formed integrally with the first conductor plate;
a DC negative terminal formed separately with the fourth conductor plate and connected with the fourth conductor plate through a third metal bonding material;
an AC terminal formed integrally with the third conductor plate, and
a sealing member that integrally seals the first conductor plate, the second conductor plate, the third conductor plate, and the fourth conductor plate, wherein
each of the DC positive terminal, the DC negative terminal, and the AC terminal has a cut section formed by cutting a tie bar that integrally couples the DC positive terminal, the DC negative terminal, and the AC terminal.