Magnetic core, inductor, and EMI filter comprising same
AssigneeLG Innotek Co., Ltd.
InventorsHyun Min Nah, Taek Hoon Nam, Sung San Kim
Life of this patent
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Abstract
An inductor according to an embodiment of the present invention comprises: a first magnetic body having a toroidal shape, and including a ferrite; and a second magnetic body disposed on an outer circumferential surface or an inner circumferential surface of the first magnetic body, wherein the second magnetic body includes: resin material and a plurality of layers of metal ribbons wound along the circumferential direction of the first magnetic body, wherein the resin material comprises a first resin material disposed to cover an outer surface of the plurality of layers of metal ribbons, and a second resin material disposed in at least a part of a plurality of layers of interlayer spaces.
Claims13
A magnetic device comprising:
- a first magnetic body having a ring shape, and including an inner surface and an outer surface;
- and
- a second magnetic body disposed on at least one of the inner surface of the first magnetic body or the outer surface of the first magnetic body,
- wherein the second magnetic body comprises:
- a metal ribbon arranged to form a plurality of layers along a centrifugal direction of the first magnetic body;
- a first resin member disposed to cover an outer surface of the metal ribbon of the plurality of layers;
- and
- a second resin member disposed in at least one portion of interlayer spaces of the plurality of layers,
- wherein a thickness in the centrifugal direction of the first magnetic body is greater than a thickness in a centrifugal direction of the second magnetic body.
A magnetic device comprising:
- a first magnetic body having a ring shape, and including an inner surface and an outer surface;
- and
- a second magnetic body disposed on at least one of the inner surface of the first magnetic body and the outer surface of the first magnetic body,
- wherein the second magnetic body comprises:
- a metal ribbon arranged to form a plurality of layers along a centrifugal direction of the first magnetic body;
- a resin material to cover an upper surface, a lower surface, an inner surface, and an outer surface of the metal ribbon;
- and
- a first resin member and a second resin member respectively disposed on different layers among the plurality of layers of the metal ribbon,
- wherein a thickness in the centrifugal direction of the first magnetic body is greater than a thickness in a centrifugal direction of the second magnetic body.
An EMI filter comprising:
- a first magnetic body having a ring shape, and including an inner surface and an outer surface;
- and
- a second magnetic body disposed on the inner surface and the outer surface of the first magnetic body,
- wherein the second magnetic body comprises a metal ribbon and a resin material,
- wherein the metal ribbon is wound in a plurality of layers along a centrifugal direction of the first magnetic body;
- wherein the resin material comprises:
- a first resin material to cover an upper surface, a lower surface, an inner surface, and an outer surface of the metal ribbon;
- and
- a second resin material disposed in at least one portion of interlayer spaces of the plurality of layers of the metal ribbon.
Dependencies are inferred from the claim text.