公开(公告)号：US20190148259A1

公开(公告)日：2019-05-16

申请号：US16170439

申请日：2018-10-25

申请人： FUJI ELECTRIC CO., LTD.

发明人： Masamitsu TAKIZAWA ,  Nobuyuki KOBAYASHI ,  Yoshio MORI ,  So NAKAMICHI ,  Kohei MATSUI

IPC分类号： H01L23/367 ,  H02M7/00 ,  H02M5/458 ,  H05K7/20

CPC分类号： H01L23/3672 ,  H02M5/4585 ,  H02M7/003 ,  H02M7/487 ,  H05K7/20854 ,  H05K7/20863 ,  H05K7/20881 ,  H05K7/209 ,  H05K7/20909 ,  H05K7/20918 ,  H05K7/20936

摘要： In each of a plurality of semiconductor element groups of a power converter, a second semiconductor switching element and a third semiconductor switching element are shifted from each other in a second direction such that at least a portion of fins with which the second semiconductor switching element overlaps as viewed in a direction orthogonal to surfaces of coolers is different from fins with which the third semiconductor switching element overlaps as viewed in the direction orthogonal to the surfaces of the coolers.