Patent ID: 7795726

Claim:
A liquid cooled power electronic circuit, comprising: a sealed container having a chamber with inlet and outlet passages for receiving and exhausting liquid coolant; and a stacked array of power semiconductor die disposed in the chamber, each such power semiconductor die having upper and lower faces on which are formed one or more electrical terminals, where the power semiconductor die are directly stacked one on another with electrical terminals of vertically adjacent power semiconductor die being juxtaposed and soldered to one another to form said power electronic circuit, the power semiconductor die are laterally staggered so that selected electrical terminals of said power semiconductor die are exposed, a floor of the chamber is vertically tiered to support the laterally staggered power semiconductor die, the chamber includes first and second sidewalls laterally bounding the vertically tiered floor of said chamber, and said first and second sidewalls are laterally staggered to match the lateral staggering of said power semiconductor die to ensure a correct orientation of said stacked array of power semiconductor die in said chamber.