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Switching power supply apparatus and luminaire

  • US 9,006,974 B2
  • Filed: 09/10/2012
  • Issued: 04/14/2015
  • Est. Priority Date: 11/15/2011
  • Status: Expired due to Fees
First Claim
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1. A switching power supply apparatus comprising:

  • a switching element connected between a power supply and a lighting load;

    an inductor connected in series to the switching element;

    a drive circuit configured to control the switching element and convert a voltage supplied from the power supply;

    a mounting substrate on which the drive circuit is mounted; and

    an insulating substrate thermally connected to the switching element, and having thermal conductivity higher than the mounting substrate, the insulating substrate being physically separate from the mounting substrate.

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