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Magnetic component

A magnetic component and component technology, which is applied in the direction of electrical components, electric solid devices, semiconductor devices, etc., can solve the problems of reducing the effective magnetic permeability of the magnetic flux circuit, it is difficult to achieve closed magnetic flux, and the transmission efficiency of magnetic flux is low.

Inactive Publication Date: 2006-10-18
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Because the magnetic field H is at right angles to the magnetic layer in all these coil concepts, the way the magnetic flux is transported is very inefficient
Also, with these techniques, closed flux is difficult to achieve, and the air gap between layers reduces the effective permeability of the flux loop

Method used

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Embodiment Construction

[0034] figure 1 A first embodiment of a magnetic element according to the invention is shown. In this embodiment, in this case, the magnetic element of the invention forms an integrated coil. The magnetic element of the invention has a first electrical conductor 2 with a large number of windings. In order to reduce the electrical resistance, the electrical conductor 2 is formed from copper and extends over the metallization planes 3 and 4 , which are connected by means of vias 5 .

[0035] A first layer sequence 6 consisting of a magnetic layer 6 a and an electrically insulating layer 6 b is arranged between the metallization levels 3 and 4 . This layer sequence forms the first magnetic conductor 7 around which the winding of the electrical conductor 2 surrounds. In this case, the magnetic layer 6a is preferably formed of a soft magnetic material, such as permalloy, whose magnetic domains are oriented along a first direction perpendicular to the drawing plane. The electric...

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Abstract

The magnetic element of the present invention uses at least two layers of different magnetic materials in order to transmit and amplify the magnetic flux. However, the use of two different layers with the same material composition allows the magnetic conductor to form a magnetic circuit with locally matched magnetic domain orientations. The magnetic element of the present invention can thus achieve significant improvements in element parameters, particularly in increasing the Q-factor.

Description

technical field [0001] The invention relates to a magnetic element. In particular, the invention relates to magnetic components integrated with other components on a substrate, such as integrated inductors or integrated transformers. Background technique [0002] Passive magnetic components such as coils or transformers are required in numerous applications. For example, in today's case, up to 300 passive components are arranged in a mobile communication phone, wherein the main functions are performed by magnetic components. Every extension in functionality, whether dual-band or dual-mode, further increases component count. In this case, the mounting, soldering and testing of smaller and smaller individual components will account for a major proportion of the device manufacturer's costs. In this case, until now, coils and inductors were usually manufactured by using thick-film technology on ceramic substrates or as air-core windings. Although these coils have a high Q fa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F17/00H01L23/64H01F41/04H01L23/522
CPCH01F17/0006H01F17/0013H01F17/0033H01F41/042H01F41/046H01L23/5227H01L23/645H01L2924/3011H01L2924/0002Y10T428/32Y10T428/12465H01L2924/00
Inventor C·阿伦斯U·巴特尔W·哈通R·罗泽汉德H·维尔斯曼
Owner INFINEON TECH AG