Low temperature co-fired ceramic (LTCC) power inductor

A low-temperature co-fired ceramic and power inductor technology, applied in transformer/inductor cores, transformer/inductor coils/windings/connections, inductors with magnetic cores, etc., can solve the problem of small power inductors, etc. Achieve the effect of reducing parasitic capacitance and consistency, good thermal conductivity, and good temperature rise characteristics

Inactive Publication Date: 2010-07-14
SHENZHEN SUNLORD ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the power inductor cannot be made smaller to meet the requirements of miniaturization, high frequency and light weight of the power module

Method used

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  • Low temperature co-fired ceramic (LTCC) power inductor
  • Low temperature co-fired ceramic (LTCC) power inductor
  • Low temperature co-fired ceramic (LTCC) power inductor

Examples

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Embodiment Construction

[0023] From figure 1 It can be clearly seen that the LTCC low-temperature co-fired ceramic power inductor includes: a ferrite core composed of two low-profile E upper cores 1 and E lower cores 2, an LTCC power inductor with a conductive coil inside Device substrate 3.

[0024] The LTCC power inductor substrate as figure 2 As shown, the high-frequency ceramic diaphragm 4 on the surface layer, the high-frequency ceramic diaphragm 4 on the bottom layer, and the five layers of high-frequency coils with conductive coil patterns stacked between the high-frequency ceramic diaphragm on the surface layer and the bottom high-frequency ceramic diaphragm The ceramic diaphragm is fired, and the LTCC power inductor substrate in this embodiment contains a coil.

[0025] The conductive coil pattern high-frequency ceramic diaphragms in the LTCC power inductor substrate are connected through through holes 5, and the two ends of the LTCC power inductor substrate are provided with external ele...

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Abstract

The invention discloses a low temperature co-fired ceramic (LTCC) power inductor, which comprises a ferrite magnetic core consisting of an upper magnetic core and a lower magnetic core and is characterized by comprising an LTCC power inductor substrate provided with an electric conduction coil inside and holes for one or three ferrite magnetic cores to assembly, and the upper magnetic core and the lower magnetic core are in butt joint and cohered into a whole in the LTCC substrate holes to form the ferrite magnetic core. The invention has the beneficial technical effects that: high-frequency ceramic material and thinner screen printing line width are used, and the inductor has less conductor loss exists, thus thereby facilitating realizing miniaturization of the powder inductor more easily; the high-frequency ceramic material with low dielectric constant is adopted, thus thereby effectively controlling and reducing parasitic capacitance and consistency; and the substrate manufactured by the high-frequency ceramic material has better coefficient of heat conductivity, and the power inductor has better exotherm property.

Description

technical field [0001] The invention relates to a power inductor, in particular to an LTCC low temperature co-fired ceramic power inductor. Background technique [0002] Traditional power inductors are mostly made by wire-wound coil technology, and the wire-wound power inductors made by this traditional method are relatively large. The power inductor made by replacing the traditional wire-wound coil with the PCB board coil is smaller than the traditional wire-wound transformer. However, the power inductor cannot be made smaller to meet the requirements of miniaturization, high frequency and light weight of the power module. Contents of the invention [0003] A technical problem to be solved by the present invention is to make up for the defects of the above-mentioned prior art and provide an LTCC low temperature co-fired ceramic power inductor that can meet the requirements of miniaturization, high frequency and light weight. [0004] The LTCC low temperature co-fired ce...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01F17/04H01F27/30H01F27/26H01F27/24
Inventor郭海伍隽漆珂
OwnerSHENZHEN SUNLORD ELECTRONICS