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PLANAR TRANSFORMER

  • US 20140167901A1
  • Filed: 12/19/2012
  • Published: 06/19/2014
  • Est. Priority Date: 12/19/2012
  • Status: Active Grant
First Claim
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1. A multi-layered printed circuit board, PCB, for providing first windings for a first side of a planar magnetic transformer and second windings for a second side of the planar magnetic transformer, the multi-layered PCB comprising:

  • a plurality of conductive layers configured to provide the first windings;

    a plurality of conductive layers configured to provide the second windings; and

    a plurality of layers of an isolation material;

    wherein;

    each layer of the isolation material is arranged between an adjacent pair of the conductive layers to provide electrical isolation between said adjacent pair of the conductive layers; and

    a group of two or more adjacent conductive layers are all conductive layers of the first windings and are all arranged between conductive layers of the second windings, wherein the thickness of the isolation material between at least one of the adjacent pairs of the conductive layers in the group of layers of the first windings is less than the thickness of the isolation material between a conductive layer of the second windings and a conductive layer of the first windings.

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