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Transformer and power supply device including the same

  • US 10,163,554 B2
  • Filed: 01/22/2015
  • Issued: 12/25/2018
  • Est. Priority Date: 08/29/2013
  • Status: Active Grant
First Claim
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1. A transformer comprising:

  • a magnetic core;

    a first coil part disposed in the magnetic core and including a multilayer substrate formed by stacking layers having conductor patterns formed thereon;

    a second coil part disposed on at least one of upper and lower surfaces of the multilayer substrate and including a conductor wire and at least a three-ply insulating material provided on the conductor wire; and

    a spacer disposed between an inner surface of the magnetic core and the first coil part and allowing the second coil part to contact the first coil part tightly,wherein the conductor pattern includes at least one each of a coil pattern to which a voltage is applied, a shielding pattern, and a Vcc pattern for forming an induction current,wherein the multilayer substrate includes a penetration hole into which a central leg of the magnetic core is inserted, and at least one of the coil pattern, the shielding pattern, and the Vcc pattern is disposed around the penetration hole,wherein a maximum width of an edge of the shielding pattern is greater than a maximum width of an edge of the Vcc pattern,wherein the second coil part has a thickness less than that of the multilayer substrate and comprises a lead groove which is formed on a seating surface where the conductor wire is seated and leads out the conductor wire in a horizontal direction, andwherein the spacer is formed of an insulating material.

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