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Inductor structure and method of forming it

A technology of inductors and printed circuit boards, which is applied in the field of inductors and can solve problems such as magnetic flux leakage

Active Publication Date: 2021-10-15
HUAWEI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coupling between the winding and the surrounding medium may generate magnetic flux leakage

Method used

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  • Inductor structure and method of forming it
  • Inductor structure and method of forming it
  • Inductor structure and method of forming it

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Embodiment Construction

[0026] The making and using of the presently preferred embodiments are discussed in detail below. It should be appreciated, however, that the present disclosure provides many applicable inventive concepts that can be implemented in a wide variety of specific contexts. The specific embodiments discussed are merely illustrative of specific ways to make and use the invention, and do not limit the scope of the invention.

[0027] Preferred embodiments of the present invention are described below in a specific context, namely, low leakage inductors for power converters or power systems meeting stringent EMI requirements. However, the present invention is also applicable to various power converters or power systems, including isolated power converters (such as forward converters), non-isolated power converters (such as buck converters), filter circuits, linear regulators, AC / DC systems (such as power factor correction circuits), etc. Various embodiments will be described in detail...

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Abstract

An apparatus comprising: a magnetic core including a first bridge arm and a second bridge arm composed of a first magnetic component and a second magnetic component, wherein a first gap and a second gap are located between the first magnetic component and the Between the second magnetic components, respectively on the first bridge arm and the second bridge arm; the first winding, wound on the first bridge arm in the counterclockwise direction; and the second winding, along the clockwise direction The clockwise direction is wound on the second bridge arm.

Description

[0001] This application claims priority to U.S. Patent Application Serial No. 15 / 653,805, filed July 19, 2017, entitled "Inductor Structures and Methods of Forming Same," the entire contents of which are incorporated herein by reference middle. technical field [0002] The invention relates to an inductor, in particular to a device and method for low near-field radiation inductors. Background technique [0003] Magnetic devices include transformers, inductors, etc. Magnetic devices typically include a magnetic core constructed of suitable ferrite, iron powder, and / or other magnetic materials. The magnetic device may also include one or more conductive windings. The windings and the current passing through them can generate a magnetic field, also known as magnetic flux. In common designs, the magnetic core usually has a high magnetic permeability compared to the surrounding medium (such as air). Therefore, the magnetic core confines the magnetic flux, forming a closed flu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F17/04H01F27/28
CPCH01F3/14H01F27/2804H01F27/38H01F41/0206
Inventor 张欢戴和平王硕
Owner HUAWEI TECH CO LTD