Patent ID: 7834448
Filing Date: 2010-11-16
Classification: H01L

Abstract:
1. A semiconductor power module, comprising: a base having an internal coolant passage bounded in part by a thermally conductive baseplate, first and second fluid ports formed in said baseplate, and a first ceramic circuit board formed on said baseplate between said first and second ports; a semiconductor chip thermally and electrically coupled to said first ceramic circuit board; and a cover including a thermally conductive coverplate mounted on said base and thermally coupled to said semiconductor chip, third and fourth fluid ports formed in said coverplate aligned with and joined to the first and second fluid ports of said baseplate, and an internal coolant passage coupling said third and fourth fluid ports such that coolant supplied to the coolant passage of said base diverges into parallel flow paths through the coolant passages of said base and said cover, and then converges in the coolant passage of said base, wherein said semiconductor chip includes a first surface on which is formed a first electrode, the first surface being soldered to the first ceramic circuit board of said base to electrically couple said first electrode to said first ceramic circuit board and to thermally couple said semiconductor chip to said baseplate, and wherein said semiconductor chip includes a second surface opposite said first surface on which is formed a second electrode, and said semiconductor power module further includes a leadframe electrically coupling said second electrode to said first ceramic circuit board and a second ceramic circuit board for thermally coupling said semiconductor chip to said cover, and wherein said leadframe is a flexible circuit including an insulated conductor layer having a first un-insulated region soldered to said second electrode and a second un-insulated region soldered to said first ceramic circuit board.