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Coupled Inductor Structure

A technology of coupled inductance and winding structure, applied in the field of inductors, can solve the problems of low saturation magnetic flux density and low power density of ferrite

Active Publication Date: 2022-04-15
HEFEI SILERGY SEMICON TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the structure of dual coupled inductors is mainly as figure 1 As shown, it includes ferrite 21 and ferrite 22. The upper surface and side surface of ferrite 22 have grooves for the installation of winding 10. The coupling degree of inductance is adjusted by the size of three air gaps 22a. Among them, the saturation magnetic flux density of the ferrite of the dual-way coupled inductor is relatively low, and the power density is low

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Embodiment Construction

[0056] Various embodiments of the invention will be described in more detail below with reference to the accompanying drawings. In the various drawings, the same elements are denoted by the same or similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale.

[0057] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0058] The present invention provides a coupled inductance structure, including a first winding structure and a second winding structure arranged crosswise, and a magnetic core matching the first winding structure and the second winding structure, wherein the first winding The structure includes at least a first portion, the second winding structure includes at least a second portion, and the magnetic flux on the first portion and the magnetic flux on the second portion at least partially cancel e...

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Abstract

A coupled inductance structure is disclosed, including a first winding structure and a second winding structure matched with a magnetic core, the first winding structure includes a first part, the second winding structure includes a second part, the first part and the second part The fluxes are at least partially cancelled. The coupled inductance structure of the present invention at least partially cancels the magnetic flux on the first part and the second part corresponding to the first winding structure and the second winding structure, and the offset part corresponds to the mutual inductance of the first winding structure and the second winding structure, which improves the Power Density of a Coupled Inductor Structure.

Description

technical field [0001] The present invention relates to the technical field of inductors, in particular to a coupled inductor structure. Background technique [0002] Coupled inductors are more and more used in VRM (Voltage Regulator Module, voltage regulation module) circuits, because in the case of interleave operation (Interleave operation), the negative coupling characteristics can reduce the ripple and improve the dynamic characteristics of the inductor. Due to the DC flux cancellation, the size of the magnetic components can be reduced accordingly. [0003] At present, the structure of dual coupled inductors is mainly as figure 1 As shown, it includes ferrite 21 and ferrite 22. The upper surface and side surface of ferrite 22 have grooves for the installation of winding 10. The coupling degree of inductance is adjusted by the size of three air gaps 22a. Wherein, the saturation magnetic flux density of the ferrite of the dual-path coupled inductor is relatively low, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/30
CPCH01F27/306
Inventor 代克危建颜佳佳
Owner HEFEI SILERGY SEMICON TECH CO LTD
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