Patent ID: 7272015
Filing Date: 2007-09-18
Classification: B60R,H05K

Abstract:
1. An electronic unit, comprising: at least one electronic power device operated at high frequency and having a flat, bare device terminal; a first metal plate having a first flat side and a second flat side, said flat, bare device terminal thermally and electrically attached in a planarly stacked manner to said first flat side of said first metal plate, said first metal plate being of larger dimensions than said electronic power device, said flat, bare device terminal being directly conductively connected to said first flat side of said first metal plate; an electrically insulating first insulating layer; a second metal plate thermally attached in a planarly stacked manner via said electrically insulating first insulating layer to said second flat side of said first metal plate, said second metal plate being dimensioned at least as large as said first metal plate; an electrically insulating second insulating layer; and a metal housing disposed on and thermally attached to a flat side of said second metal plate facing away from said first metal plate via said electrically insulating second insulating layer, said metal housing functioning as a metal heat sink through which a cooling fluid can flow, said metal housing having fluid ducts formed therein for conducting the cooling fluid and functioning as a cooling fluid based heat sink.