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An integrated transformer

A technology for integrating transformers and sub-coils, applied in transformer/inductor components, transformer/inductor coils/windings/connections, electrical components, etc., can solve problems such as poor performance of integrated transformers, increase the total effective cross-section, The effect of improving performance

Active Publication Date: 2021-07-23
RADROCK (SHENZHEN) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an integrated transformer to solve the technical problem of poor performance of the integrated transformer in the prior art

Method used

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specific Embodiment approach

[0063] Further, as a specific implementation manner of the integrated transformer provided by the present invention, the primary coil includes a first sub-coil and a second sub-coil, and the secondary coil includes a third sub-coil and a fourth sub-coil.

[0064] Wherein, the sub-coils contained in the primary coil and the secondary coil can be assembled in parallel and / or in series, so that the coils on each metal layer can obtain the required impedance matching.

[0065] Further, as a specific implementation of the integrated transformer provided by the present invention, the first sub-coil and the second sub-coil are connected in series, and the third sub-coil and the fourth sub-coil are connected in series. connected in series.

[0066] For example, the first sub-coil is connected in series with the second sub-coil, and the third sub-coil is connected in series with the fourth sub-coil. The turns ratio of the primary coil and the secondary coil is 1:1, and the square of t...

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Abstract

The invention provides an integrated transformer, which comprises a plurality of stacked metal layers, each metal layer is provided with a coil; a plurality of dielectric layers, each dielectric layer is located between two adjacent metal layers, and each dielectric layer is provided with a through hole ; The input ends of the coils in two adjacent metal layers are connected through the through holes corresponding to the input ends in the medium layer, and the output ends of the coils in the adjacent two metal layers are connected through the through holes corresponding to the output ends in the medium layer; In the invention, a dielectric layer is provided between the metal layer and a through hole is provided on the dielectric layer, and the coils of the metal layer are connected through corresponding through holes, so that only a through hole needs to be provided on the dielectric layer between the metal layers. It can be connected, and the current flow can be realized without complete bonding between the metal layers, which greatly reduces the influence of the skin effect and increases the effective cross-section of each metal layer. By increasing the number of metal layers, it can be extremely The total effective cross-section of the integrated transformer current is greatly increased, thereby effectively improving the performance of the integrated transformer.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to an integrated transformer. Background technique [0002] A transformer is a device that uses electromagnetic mutual induction to transform voltage, current and impedance. It is an important component in radio frequency integrated circuits. Transformers are widely used in radio frequency integrated circuits. However, transformers tend to take up a lot of core volume, so there is a need to reduce the area of ​​transformers in integrated circuits. [0003] In the prior art, in order to reduce the volume of the transformer, an integrated transformer composed of multiple metal layers stacked appears. The stacked design of multiple metal layers reduces the volume of the integrated transformer. [0004] However, most of such integrated transformers are formed by completely bonding multiple metal layers to each other. This type of integrated transformer is composed of fully bonde...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/28
CPCH01F27/2804H01F27/2828H01F2027/2809
Inventor 曹原胡自洁倪楠倪建兴
Owner RADROCK (SHENZHEN) TECH CO LTD
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