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US 7,425,883 B2Granted
Magnetic element for multi-phase and method of manufacturing the same
AssigneeMatsushita Electric Industrial 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.
Claims7
A magnetic element for multi-phase operation, comprising
- a first punched coil having a first coil portion and a first terminal at an end of the first coil portion and a second terminal at an opposite end of the first coil portion,
- a second punched coil having a second coil portion and a third terminal at an end of the second coil portion and a fourth terminal at an opposite end of the second coil portion, and
- wherein the first and second punched coils are encapsulated within a composite magnetic material except for the first, second, third, and fourth terminals,
- each coil comprises at least one loop,
- and the first and second punched coils are for generating respective magnetic fluxes, thereby coupling the first punched coil and the second punched coil.
2 more elements
Dependencies are inferred from the claim text.