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US 7,804,389 B2Granted
Chip-type inductor
AssigneeLG Electronics Inc.
InventorsSung Il Kim, Il Je Cho, Jae Hyun Uhm, Du Il Kim, Jong Go Seo
Life of this patent
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Abstract
A chip-type inductor comprising includes internal magnetic material, external magnetic material disposed on opposing sides of the internal magnetic material, and a conductor formed in a space between the internal and external magnetic material. The internal and external magnetic materials form a magnetic path along which magnetic flux of a magnetic field produced by current flowing along the conductor flows. According to at least one embodiment, the flow cross-sectional area of the magnetic flux in the internal magnetic material is at least substantially equal to a sum of the flow cross-sectional areas in the external magnetic materials.
Claims21
A chip-type inductor, comprising:
- a magnetic material body including an internal magnetic material, external magnetic materials arranged to be opposed to the opposite lateral sides of the internal magnetic material with a predetermined space, and bottom and top magnetic material provided at the top and bottom surfaces of the internal and external magnetic materials to be connected with the internal and external magnetic materials;
- a non-magnetic material filling the space between the internal and external magnetic materials in such a manner that the non-magnetic material cooperates with the internal and external magnetic material to form a single layer;
- and
- a conductive pattern formed in the non-magnetic material so as to surround the internal magnetic material a plurality of times,
- wherein, in the magnetic material body, the internal magnetic material and the external magnetic materials are opposed to the opposite lateral sides of the internal magnetic material form a magnetic path, along which magnetic flux of the magnetic field produced by current flowing along the conductive current flows, and a flow cross-section area for the magnetic flux in the internal magnetic material is at least substantially equal to a sum of flow cross-section areas in the external magnetic materials,
- wherein the flow cross-section area for magnetic flux in each of the top and bottom magnetic material is substantially equal to a sum of the flow cross-section areas in the external magnetic materials,
- wherein the internal magnetic material is formed with internal projections at opposite ends thereof, the internal projections respectively projecting toward the external magnetic materials,
- wherein the external magnetic materials are formed with external projections that project toward the internal magnetic material, the external projections located at middle areas of lateral sides of the external magnetic materials at areas that are opposed to the internal magnetic material, and
- wherein the flow cross-section area for magnetic fluxes in the internal magnetic material is formed in substantially an “I” shape.
6 more elements
A chip-type inductor comprising:
- a magnetic material body including an internal magnetic material, external magnetic materials arranged to be opposed to the opposite lateral sides of the internal magnetic material with a predetermined space, and bottom and top magnetic material provided at the top and bottom surfaces of the internal and external magnetic materials to be connected with the internal and external magnetic materials;
- a non-magnetic material filling the space between the internal and external magnetic materials so as to cooperate with the internal and external magnetic materials, thereby forming a single plane;
- a conductive pattern formed in the non-magnetic material and extending around the internal magnetic material in a spiral form, the opposite ends of the conductive pattern being electrically connected to the outside, respectively;
- and
- external terminals electrically connected with the opposite ends of the conductive pattern, the external terminals being formed to cover the opposite ends of the integrated magnetic and the non-magnetic materials so as to implement the electrical connection to the outside,
- wherein, in the magnetic material body, the internal magnetic material is formed with internal projections at the opposite ends thereof, which project toward the external magnetic materials, respectively, and the external magnetic materials are formed with external projections, which project toward the internal magnetic area, at the middle areas of lateral sides thereof opposed to the internal magnetic material,
- wherein the flow cross-section area for magnetic fluxes in the internal magnetic material is formed in substantially an “I” shape,
- wherein the internal magnetic material and the external magnetic materials opposed to the opposite lateral sides of the internal magnetic material form a magnetic path, along which magnetic flux of the magnetic field produced current flowing along the conductive pattern flow, and a flow cross-section area for the magnetic fluxes in the internal magnetic material is at least substantially equal to a sum of flow cross-section areas in the external magnetic materials, and
- wherein the flow cross-section area of one of the external magnetic areas is substantially equal to the flow cross-section area of the flow cross-section area of each of the top and bottom magnetic materials.
6 more elements
A chip-type inductor comprising:
- an internal magnetic material, external magnetic materials arranged to be opposed to the opposite lateral sides of the internal magnetic material, respectively, and a conductive pattern extending along a space formed between the internal magnetic material and the external materials, thereby surrounding the internal magnetic material,
- wherein magnetic flux of the magnetic field produced by current flowing along the conductive pattern flow through the internal magnetic material and the external magnetic materials,
- wherein a flow cross-section area for magnetic flux in the internal magnetic material is at least substantially equal to a sum of flow cross-section areas for magnetic flux in the external magnetic materials, and
- wherein the internal magnetic material is formed with internal projections at the opposite ends thereof, which project toward the external magnetic materials, respectively, and the external magnetic materials are formed with external projections, which project toward the internal magnetic material, at middles areas of the lateral sides thereof opposed to the internal magnetic material,
- wherein a space is uniformly formed between the internal magnetic material and the external magnetic materials, which have the internal projections and the external projections, respectively, and wherein the flow cross-section area for magnetic fluxes in the internal magnetic material is formed in substantially an “I” shape.
2 more elements
A chip-type inductor comprising:
- a magnetic material body including an internal magnetic material, external magnetic materials arranged to be opposed to the opposite lateral sides of the internal magnetic material with a predetermined space, and bottom and top magnetic material provided at the top and bottom surfaces of the internal and external magnetic materials to be connected with the internal and external magnetic materials;
- a non-magnetic material filling the space between the internal and external magnetic materials so as to cooperate with the internal and external magnetic materials, thereby forming a single plane;
- and
- a conductive pattern formed on the non-magnetic material to extend spirally, thereby surrounding the edges of the internal magnetic material, wherein a magnetic material gap is formed in at least one side of the external magnetic materials so as to prevent the saturation of magnetic flux flowing through the external magnetic materials,
- wherein the flow cross-section area for magnetic fluxes in the internal magnetic material is formed in substantially a rectangular shape, and the external magnetic materials are formed to surround the internal magnetic material, and
- wherein a flow cross-section area in the internal magnetic material and a sum of flow cross-section areas in the external magnetic materials are substantially equal to each other.
3 more elements
A chip-type inductor comprising:
- a magnetic material body including an internal magnetic material, an external magnetic materials arranged to surround the internal magnetic material with a predetermined space, and bottom and top magnetic material provided at the top and bottom surfaces of the internal and external magnetic materials to be connected with the internal and external magnetic materials;
- a non-magnetic material filing the space between the internal and external magnetic materials so as to cooperate with the internal and external magnetic materials, thereby forming a single plane;
- a conductive pattern formed in the non-magnetic material and extending around the internal magnetic material in a spiral form, the opposite ends of the conductive pattern being electrically connected to the outside, respectively;
- and external terminals electrically connected with the opposite ends of the conductive pattern, the external terminals being formed to cover the opposite ends of the integrated magnetic and non-magnetic materials so as to implement the electrical connection to the outside,
- wherein a magnetic material gap is formed in at least a side of the external magnetic material so as to prevent the magnetic flux flowing along the external magnetic material from being saturated,
- wherein the internal magnetic material the external magnetic material, and the top and bottom magnetic materials form a magnetic path, along which the magnetic flux of the magnetic field produced by current flowing along the conductive pattern flow, and a flow cross-section area for the magnetic flux in the internal magnetic material, a flow cross-section area in the external magnetic material, and a flow cross-section area in each of the top and bottom magnetic materials are at least substantially equal to each other, and wherein the flow cross-section area for magnetic fluxes in the internal magnetic material is formed in substantially a rectangular shape.
3 more elements
Dependencies are inferred from the claim text.