Magnetic element for multi-phase and method of manufacturing the same
AssigneeMatsuhita Electric Co., Ltd.
InventorsNobuya Matsutani, Hidenori Uematsu, Tsunetsugu Imanishi
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Abstract
A magnetic element for multi-phase is composed by burying a plurality of coils in a composite magnetic material such that a negative coupling of magnetic fluxes or a positive coupling of magnetic fluxes exists between at least two coils. This structure more miniaturizes inductors, or choke coils as the multi-phase magnetic element suitably used for application of a large current to many kinds of electronic equipment. Such multi-phase magnetic element has an excellent ripple current property.
Claims5
1-9. (canceled)
A method of manufacturing a magnetic element for multi-phase, comprising:
- A) mixing soft magnetic alloy particles and an insulation resin to prepare a mixture,
- B) press-forming the mixture and a plurality of coils to make a formed body, and
- C) hardening the insulation resin,
- wherein one of a negative coupling of magnetic fluxes and a positive coupling of magnetic fluxes exists between at least two coils of the plurality of coils.
Dependencies are inferred from the claim text.