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Electronic control unit with multiple hybrid circuit assemblies integrated on a single common ceramic carrier

  • US 5,159,532 A
  • Filed: 05/28/1991
  • Issued: 10/27/1992
  • Est. Priority Date: 11/09/1988
  • Status: Expired due to Term
First Claim
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1. An electronic control unit comprising:

  • a housing including (a) a heat sink which forms a base of said housing and which is provided with mounting holes for mounting said unit on a support structure, (b) a closed frame member directly disposed on and fastened to a surface of said heat sink to define a cavity closed at one end with a surrounded portion of said surface of said heat sink, and (c) a separate cover on said frame member closing the other end of said cavity; and

    a single hybrid integrated electronic circuit including switching and power components, arranged in a plurality of separate assemblies with differing power dissipations, disposed on a surface of a single common electrically non-conductive carrier consisting of Al2 O3, with said carrier being mounted directly on said surrounded portion of said surface of said heat sink within said cavity.

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