CN212182062U

CN212182062U - Power inductor for high and low load scene

Info

Publication number: CN212182062U
Application number: CN202020935211.5U
Authority: CN
Inventors: 赖敏敏; 陈鹏; 王玉生
Original assignee: Shenzhen Microgate Technology Co ltd
Current assignee: Shenzhen Microgate Technology Co ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2020-12-18
Anticipated expiration: 2030-05-28

Abstract

The utility model provides a power inductance that high, low load scene was used, the utility model aims at providing a power inductance who is applicable to two kinds of modes of high, low load simultaneously, power inductance including be located the first magnetic pole that has high saturation characteristic of inductance center, around the coil assembly of first magnetic pole, around the coil assembly and have the second magnetic layer of high magnetic permeability and around the second magnetic layer and have the third magnetic body that has high saturation characteristic. The beneficial effects of the utility model reside in that: the power inductor for high and low load scenes has the characteristics of high initial inductance and high inductance under large current, and is particularly suitable for scenes in which high and low load modes can be used. The inductor has high inductance under low load, so that the ripple current is small, which is beneficial to reducing the inductance loss; the inductor has relatively high inductance under high load, and can work normally.

Description

Power inductor for high and low load scene

Technical Field

The utility model relates to a power inductance that high, low load scene was used.

Background

The inductor is a component widely used in electronic products, and most inductors are generally used in only one mode, but in practical requirements, the inductor is expected to be suitable for both high and low load modes.

SUMMERY OF THE UTILITY MODEL

A power inductor for high and low load scenes comprises a first magnetic column with high saturation characteristics, a coil group, a second magnetic layer and a third magnetic body, wherein the first magnetic column is located in the center of the inductor, the coil group surrounds the first magnetic column, the second magnetic layer surrounds the coil group and has high permeability, and the third magnetic body surrounds the second magnetic layer and has high saturation characteristics.

Furthermore, the coil group is an enameled wire annular winding.

Further, the coil has 5 turns and has an outer diameter and an inner diameter and a height of 6 and 4 and 2 mm.

Further, the first magnetic pillar has a relative magnetic permeability of 40 and an outer diameter of 4.0 × 4.0 mm; the second magnetic layer has relative permeability of 45 and the length, width and height of the second magnetic layer are respectively 7 x 3.0 mm; the third magnetic body has a relative magnetic permeability of 30 and a length, width and height of 8 x 4.0 mm.

The beneficial effects of the utility model reside in that: the power inductor for high and low load scenes has the characteristics of high initial inductance and high inductance under large current, and is particularly suitable for scenes in which high and low load modes can be used. The inductor has high inductance under low load, so that the ripple current is small, which is beneficial to reducing the inductance loss; the inductor has relatively high inductance under high load, and can work normally.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

fig. 3 is a cross-sectional view of the present invention.

Detailed Description

The invention will be further explained and explained with reference to the drawings.

Referring to fig. 1-3, a power inductor for high and low load scenes includes a first magnetic pillar (1) located at the center of the inductor and having high saturation characteristics, a coil assembly (2) surrounding the first magnetic pillar (1), a second magnetic layer (3) surrounding the coil assembly (2) and having high permeability, and a third magnetic body (4) surrounding the second magnetic layer (3) and having high saturation characteristics, wherein pins of the coil assembly (2) are led out from the bottom of the third magnetic body. The first magnetic column (1), the second magnetic layer (3) and the third magnetic body (4) are made of a plurality of soft magnetic materials with different magnetic properties, generally, the first magnetic column (1) has a high saturation property, the second magnetic layer (3) has a high magnetic permeability, and the third magnetic body (4) has a high saturation property, wherein the soft magnetic materials can be but are not limited to FeNi, FeSi, carbonyl iron powder, FeSiCr, amorphous and soft magnetic ferrite materials.

In a specific embodiment, the coil assembly (2) is an enameled wire annular winding with 5 turns, the outer diameter and the inner diameter and the height are 6 and 4 mm and 2mm, the material of the first magnetic column (1) is FeSi, the relative permeability is 40, and the outer diameter and the height are 4.0 and 4.0 mm; the material of the second magnetic layer (3) is FeSi, the relative permeability is 45, and the length, width and height are respectively 7 x 3.0 mm; the third magnetic body (4) material is FeSi, has a relative magnetic permeability of 30 and a length, width and height of 8 x 4.0 mm. The electrical characteristic test result of the inductor is as follows: the initial inductance L is 2.02 muH, and the inductance L1 under the small current of 2A is 2.02 muH; inductance L2 at 20A for high current: 1.45 muH.

Claims

1. A power inductor for high and low load scenes is characterized by comprising a first magnetic column with high saturation characteristic, a coil group, a second magnetic layer and a third magnetic body, wherein the first magnetic column is positioned in the center of the inductor, the coil group surrounds the first magnetic column, the second magnetic layer surrounds the coil group and has high permeability, and the third magnetic body surrounds the second magnetic layer and has high saturation characteristic.

2. The power inductor for high and low load scenes according to claim 1, characterized in that the coil assembly is a circular ring winding of enameled wires.

3. A power inductor in a high and low load scenario, as claimed in claim 2, wherein said coil has 5 turns and an outer diameter x inner diameter x height of 6 x 4 x 2 mm.

4. The power inductor for high and low load scenes according to claim 1, wherein said first pole is a pole having a relative permeability of 40 and an outer diameter x height of 4.0 x 4.0 mm; the second magnetic layer has relative permeability of 45 and the length, width and height of the second magnetic layer are respectively 7 x 3.0 mm; the third magnetic body has a relative magnetic permeability of 30 and a length, width and height of 8 x 4.0 mm.