Integrated transformer

A technology for integrating transformers and windings, applied in the direction of fixed transformers or mutual inductances, transformer/inductor components, transformer/inductor coils/windings/connections, etc., can solve the problem of occupying a large chip area and increasing the difficulty of designing a figure-8 integrated transformer and other problems, to achieve the effect of good coupling efficiency, beneficial to implementation, and good symmetry

Pending Publication Date: 2020-08-07
REALTEK SEMICON CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the transformer in the integrated circuit often occupies a large amount of chip area. Therefore, how to reduce the area of ​​the transformer in the integrated circuit while maintaining the characteristics of the components (such as coupling coefficient (coupling coefficient, K)) has become an important issue. topic
[0003] In particular, the symmetry of the figure-eight integrated transformer and the crossing structure located in the central area increase the design difficulty of the figure-eight integrated transformer

Method used

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[0020] The technical terms in the following explanations refer to the customary terms in this technical field. If some terms are explained or defined in this manual, the explanations of these terms shall be based on the descriptions or definitions in this manual.

[0021] The present disclosure includes integrated transformers. Since some of the components included in the integrated transformer of the present invention may be known components individually, the details of the known components will be omitted in the following description without affecting the full disclosure and practicability of the device invention.

[0022] Figure 1A ~ Figure 1C It is a structural diagram of an embodiment of the integrated transformer of the present invention. The integrated transformer includes an inductor 10 substantially implemented on the first metal layer ( Figure 1A ), the inductance 20 ( Figure 1B ), and some segments (segments) implemented in the third metal layer ( Figure 1C )...

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Abstract

An integrated transformer is provided. The integrated transformer includes a first inductor and second inductors. The first inductor includes a first winding having a first outer turn and a second winding having a second outer turn. The second inductor includes a third winding having a third outer turn and a fourth winding having a fourth outer turn. The first and third outer turns substantially overlap, and the second and fourth outer turns substantially overlap. The first and second outer turns are connected to each other through a first segment and a second segment that together form a crossing structure, and the third and fourth outer turns are connected to each other through a third segment and a fourth segment that together form a crossing structure. The first and third segments arein the first metal layer, while the second and fourth segments are in the second metal layer.

Description

technical field [0001] The present invention relates to semiconductor components, and more particularly to integrated transformers. Background technique [0002] Transformer is an important component used in radio frequency integrated circuits to realize single-ended to differential signal conversion, signal coupling, impedance matching and other functions. With the development of integrated circuits to System on Chip (SoC), integrated transformers have become Gradually replace traditional discrete components, and are widely used in radio frequency integrated circuits. However, the transformer in the integrated circuit often occupies a large amount of chip area. Therefore, how to reduce the area of ​​the transformer in the integrated circuit while maintaining the characteristics of the components (such as coupling coefficient (coupling coefficient, K)) has become an important issue. topic. [0003] In particular, the symmetry of the figure-eight integrated transformer and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28H01F19/04
CPCH01F27/2804H01F19/04H01L28/10H01F2027/2809
Inventor 颜孝璁陈家源
Owner REALTEK SEMICON CORP
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