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EFD3444 soft magnetic ferrite core for high-frequency power transformer

A soft ferrite, high-frequency power supply technology, used in the manufacture of inductors/transformers/magnets, transformers/inductor cores, circuits, etc., can solve problems such as rising prices of electronic transformers, and achieve low power loss and saturation magnetic flux. The effect of high density and enhanced action

Inactive Publication Date: 2013-12-04
上海康顺磁性元件厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the price of raw materials (core materials) for electronic transformers has risen

Method used

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  • EFD3444 soft magnetic ferrite core for high-frequency power transformer
  • EFD3444 soft magnetic ferrite core for high-frequency power transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of EFD3444 soft ferrite core for high frequency power transformer, its structure is as follows Figure 1-2 As shown, it is an E-shaped structure with a length of 22mm, a width of 5.4mm, and a height of 33.7mm. The length of the upper and lower protruding ends of the magnetic core is 16.5 mm, and the distance between the two protruding ends is 23.4 mm. The protruding end in the middle of the magnetic core is set close to one side of the magnetic core. The length of the protruding end is the same as that of the upper and lower protruding ends. The end has a rounded transition.

[0020] The produced EFD3444 soft ferrite core for high-frequency power transformers is suitable for all kinds of LED&LCD liquid crystal display high-frequency power transformers. The main technical indicators are as follows:

[0021] Core inductance (AL): 2000±25%

[0022] Core power loss (PCV): 350KW / m3 (100KHz 200mT 80℃)

[0023] 350KW / m3(100KHz 200mT 120℃)

[0024] Core Curie temper...

Embodiment 2

[0028] An EFD3444 soft ferrite core for a high-frequency power transformer is an E-shaped structure with a length of 21.8mm, a width of 5.15mm, and a height of 33.1mm. The length of the upper and lower protruding ends of the magnetic core is 16.3 mm, and the distance between the two protruding ends is 23.4 mm. The protruding end in the middle of the magnetic core is set close to one side of the magnetic core. The length of the protruding end is the same as that of the upper and lower protruding ends. There is a rounded corner transition at the exit.

Embodiment 3

[0030] An EFD3444 soft ferrite core for a high-frequency power transformer is an E-shaped structure with a length of 22.2mm, a width of 5.65mm, and a height of 34.3mm. The length of the upper and lower protruding ends of the magnetic core is 16.7 mm, and the distance between the two protruding ends is 23.4 mm. The protruding end in the middle of the magnetic core is set close to one side of the magnetic core. The length of the protruding end is the same as that of the upper and lower protruding ends. There is a rounded corner transition at the exit.

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Abstract

The invention relates to an EFD3444 soft magnetic ferrite core for a high-frequency power transformer. The core is E-shaped, 21.8-22.2mm in length, 5.15-5.65mm in width and 33.1-34.3mm in height. Compared with the prior art, the EFD3444 soft magnetic ferrite core has the advantages that the EFD3444 soft magnetic ferrite core is applicable to high-frequency power transformers of various LED and LCD (liquid crystal displays) and has the advantages of stable high-frequency characteristic, high magnetic flux density, high Curie temperature, low loss, negative temperature characteristic for power characteristic and the like, the transformers made with the core is more energy saving and noiseless, size is reduced greatly, weight is reduced, service life is prolonged, power factor is high, and cost is lowered greatly.

Description

technical field [0001] The invention relates to a high-frequency, high-Bs, low-loss, and high-stability soft ferrite core, in particular to an EFD3444 soft ferrite core for a high-frequency power transformer. Background technique [0002] In recent years, the price of iron core materials used in electronic transformers in power supplies has continued to rise, and upstream raw materials have formed a seller's market. As the power users of downstream electronic transformers, they can choose and purchase on a global scale, forming a buyer's market. The electronic transformer industry, which is in the middle, can only get rid of this kind of dilemma by taking the road of technological innovation. However, in the mature electronic transformer industry, technological innovation is more difficult. But the improvement of every small link can bring new ideas and new products. [0003] The electronic transformer in the power supply, like any product as a commodity, must perform spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/24H01F41/02H01F1/34
Inventor 陈俊熊小东陈魏魏
Owner 上海康顺磁性元件厂有限公司