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Semiconductor Device, and Power Conversion Device Using Semiconductor Device

  • US 20110051371A1
  • Filed: 07/30/2009
  • Published: 03/03/2011
  • Est. Priority Date: 08/06/2008
  • Status: Active Grant
First Claim
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1. A vehicle power module, comprising:

  • an upper arm circuit portion in which a plurality of power semiconductor elements are connected in parallel;

    a lower arm circuit portion in which a plurality of power semiconductor elements, different from those of the upper arm circuit portion, are connected in parallel, and moreover that is connected in series with the upper arm circuit portion;

    an insulating board upon which at least the upper arm circuit portion is implemented; and

    a metallic base joined to the side of the insulating board opposite to its side upon which the upper arm circuit portion is implemented;

    wherein the upper arm circuit portion comprises;

    a first connecting conductor for electrically connecting together a positive electrode terminal of DC power supply side and a collector terminal of a power semiconductor element of the upper arm circuit portion; and

    a second connecting conductor for electrically connecting together an emitter terminal of a power semiconductor element of the upper arm circuit portion and a collector terminal of a power semiconductor element of the lower arm circuit portion;

    and wherein power semiconductor elements of the upper arm circuit portion, the first connecting conductor, and the second connecting conductor are arranged upon the insulating board so that two or more looped current paths are formed upon the metallic base by currents that flow when the power semiconductor elements are switched.

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