Electronic unit with EMC shielding

An electronic unit, comprising:

• at least one electronic power device operated at high frequency and having a flat, bare device terminal;
• a metal housing thermally coupled to said electronic power device;
• 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;
• 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;
• 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;
• and
• a metal heat sink through which a cooling fluid can flow, said metal heat sink disposed between said second metal plate and said metal housing and electrically connected to said second metal plate or said metal housing.

An electronic unit, comprising:

• at least one electronic power device operated at high frequency and having a flat, bare device terminal;
• a metal housing thermally coupled to said electronic power device;
• 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;
• 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;
• 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;
• and
• a metal heat sink through which a cooling fluid can flow, said metal heat sink disposed on an outside of said metal housing and electrically connected to said metal housing.