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Isolation transformer for use in isolated DC-to-DC switching power supply

  • US 9,478,351 B2
  • Filed: 05/24/2013
  • Issued: 10/25/2016
  • Est. Priority Date: 05/24/2013
  • Status: Active Grant
First Claim
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1. An isolated DC-to-DC switching power supply, comprising:

  • an isolation power transformer including;

    a magnetic core;

    a first winding around the magnetic core;

    a first electrostatic winding-shield around the magnetic core;

    a second electrostatic winding-shield within the first electrostatic winding-shield; and

    a second winding within the second electrostatic winding-shield,such that the first winding electrostatically couples to the first electrostatic winding-shield and the second winding electrostatically couples to the second electrostatic winding-shield, such that there is no charge flow between the first electrostatic winding-shield and the second electrostatic winding-shield; and

    wherein each of the first winding, the first electrostatic winding-shield, the second electrostatic winding-shield and the second winding are affixed to a printed circuit board.

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