Laminated power coil type device
A power type, coil technology, applied in the direction of transformer/inductor coil/winding/connection, etc., can solve the problem of increasing the cost of laminated inductors, reducing the inductance of laminated inductors without improvement, and reducing the effect of DC resistance is not very significant and other problems, to achieve the effect of improving the temperature rise current characteristics, avoiding the phenomenon of magnetic saturation, and reducing the loss
Active Publication Date: 2015-07-22
SUNLORD (SHANGHAI) ELECTRONICS CO
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Problems solved by technology
However, under the premise of increasing the cost of the multilayer inductor, the effect of reducing the DC resistance is not very significant, and the inductance of the multilayer inductor caused by the presence of low magnetic permeability magnetic or non-magnetic materials is reduced. no improvement
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[0017] Below in conjunction with embodiment the present invention is further described.
[0018] EXAMPLES The embodiment of the multilayer inductor related to the multilayer power type coil device will be specifically described.
[0019] A laminated power coil type device, comprising a laminated body formed by laminating conductors and insulators forming coils, the main body of each layer is the first insulator of high magnetic permeability magnetic material, and the coil conductor of the coil layer In the first insulator, an insulating layer is arranged between two adjacent coil layers, and the part of the insulating layer sandwiched by the conductor is a second insulator made of low magnetic permeability magnetic material or non-magnetic material.
[0020] Such as figure 1 As shown, the laminated inductor 702 has a roughly rectangular laminated body 701 composed of magnetic or non-magnetic insulating materials (the first insulator 802 is transparentized in the figure), and ...
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The invention discloses a laminated power coil type device, which relates to laminated coil type devices. The laminated power coil type device comprises a laminated body obtained by laminating conductors and insulators, wherein coils are formed by the conductors and the insulators; the main body of each layer of sheet is a first insulator made from a magnetic material with high magnetic conductivity; the coil conductors of coil layers are arranged in the first insulator; insulating layers are arranged between every two adjacent coil layers; a part of at least one insulating layer which is clamped by the conductors is a second insulator made from a magnetic material with low magnetic conductivity or a non-magnetic conductive material. The laminated power type coil device disclosed by the invention greatly reduces magnetic leakage among the coil layers, saves cost, reduces direct current resistance, and improves temperature rise current characteristics of an inductor; and meanwhile, the laminated power type coil device has higher saturated current characteristics.
Description
technical field [0001] The invention relates to laminated coil devices, in particular to manufacturing laminated power inductors and laminated transformers with high saturation current characteristics by reducing the magnetic flux leakage between coil layers. Background technique [0002] Power inductors are used in switching DC-DC converter circuits of electronic products. As electronic products require thinner and thinner coil products such as inductors and transformers, it is difficult for traditional wire-wound power inductors to meet the ultra-low thickness requirements due to the limit of the magnetic core manufacturing process; and another type of power inductor Inductors—Integrated power inductors have problems such as easy short circuit, inability to further reduce size, and inability to reduce DC resistance when making products with small inductance values, resulting in mismatch between temperature rise current characteristics and saturation current characteristics...
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IPC IPC(8): H01F27/28H01F27/32
Inventor 李有云黄佐新陆达富张扬
Owner SUNLORD (SHANGHAI) ELECTRONICS CO