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DC-DC converter module and multi-layer substrate

  • US 9,320,134 B2
  • Filed: 03/11/2013
  • Issued: 04/19/2016
  • Est. Priority Date: 01/25/2011
  • Status: Active Grant
First Claim
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1. A DC-DC converter module comprising:

  • a multi-layer substrate including component mounting electrodes provided on a first surface thereof in a stacking direction and an input terminal, an output terminal, and a ground terminal provided on a second surface thereof in the stacking direction;

    a switching IC that switches an input voltage and outputs a switched voltage and that includes an input electrode that is connected to the input terminal through at least one of the component mounting electrodes, an output electrode that is connected to the output terminal through at least one of the component mounting electrodes, and a ground electrode that is connected to the ground terminal through at least one of the component mounting electrodes; and

    a coil that is arranged within the multi-layer substrate in a spiral shape with an axis extending in the stacking direction, an end of the coil nearer to the first surface being connected to the input terminal or the output terminal, and an end of the coil nearer to the second surface being connected to the input electrode or the output electrode of the switching IC and extending through an inside of the multi-layer substrate.

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