Patent ID: 6493227
Filing Date: 2002-12-10
Classification: H01L,H05K

Abstract:
Cooling apparatus for power semiconductors, which apparatus is essentially box-shaped and displays two extruded cooling sections joined to each other, of which one cooling section forms a first heat-conducting side wall and the other cooling section forms a second heat-conducting side wall, opposite the first side wall, of the cooling apparatus; in this, the side walls display cooling partitions formed on the inner sides of the latter, which cooling partitions bound cooling channels through which cooling fluid can be conducted; the cooling partitions formed on the first side wall project between the cooling partitions formed on the second side wall; the first side wall displays a smaller cross section than the second side wall; and power semiconductors are to be attached to the outer side of the second side wall in a heat-conducting manner; wherein power semiconductors with lower waste heat are to be attached to the outer side of the first side wall and power semiconductors with higher waste heat are to be attached to the outer side of the second side wall, and that the cross sections of all of the cooling partitions formed on the inner sides of the side walls increase from the first towards the second side walls.