Patent ID: 8482919

Claim:
A power electronics card assembly comprising: a printed circuit board assembly comprising: a printed circuit board substrate; a power electronics device opening within the printed circuit board substrate; a fluid inlet channel extending within the printed circuit board substrate from a perimeter of the printed circuit board assembly to the power electronics device opening; a fluid outlet channel within the printed circuit board substrate extending from the perimeter of the printed circuit board assembly to the power electronics device opening; and electrically conductive power connections; and a power electronics device positioned within the power electronics device opening, the power electronics device comprising: a fluid inlet layer fluidly coupled to the fluid inlet channel; a fluid outlet layer fluidly coupled to the fluid outlet channel; a target heat transfer layer fluidly coupled to the fluid inlet layer; a second-pass heat transfer layer fluidly coupled to the target heat transfer layer and the fluid outlet layer, wherein coolant fluid flowing through the fluid inlet layer impinges the target heat transfer layer, flows into the second-pass heat transfer layer, and out of the fluid outlet channel; and a power device layer coupled to the target heat transfer layer, wherein the fluid inlet layer, the fluid outlet layer, the target heat transfer layer, the second-pass heat transfer layer, and the power device layer comprise a semiconductor material.