CN101986400A - Integrated inductor based on differential mode and common mode filtering - Google Patents
Integrated inductor based on differential mode and common mode filtering Download PDFInfo
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- CN101986400A CN101986400A CN 201010168132 CN201010168132A CN101986400A CN 101986400 A CN101986400 A CN 101986400A CN 201010168132 CN201010168132 CN 201010168132 CN 201010168132 A CN201010168132 A CN 201010168132A CN 101986400 A CN101986400 A CN 101986400A
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- magnetic
- integrated inductor
- common mode
- inductor based
- filtering
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Abstract
The invention relates to an integrated inductor based on differential mode and common mode filtering. The integrated inductor is provided with two or an even number of same magnetic cores in a symmetrical connection mode, wherein two magnetic bar jacks are arranged in the middle of the magnetic cores; two magnetic bars are respectively inserted into the magnetic bar jacks; and coils are wound on the magnetic cores. The integrated inductor based on the differential mode and common mode filtering has the advantages of high integration degree, saved cost, and coincidence with development direction of switch power supply components.
Description
Technical field:
The present invention relates to a kind of EMI integrated inductor that is widely used in the various Switching Power Supplies, be primarily aimed at the electromagnetic interference apparatus structure technical field that suppresses Switching Power Supply.
Background technology:
Along with popularizing and development of Switching Power Supply electronic product; various electronic products are subjected to Electromagnetic Interference and cause phenomenons such as parafunction, error of transmission or Control Failure through regular meeting, and the electromagnetic interference that how to reduce Switching Power Supply has become the problem that receives much concern.Simultaneously along with electronic equipment to integrated, intelligent development, high frequencyization and the integrated both direction that also becomes the miniaturization of Switching Power Supply magnetic elements, the integrated approach of the inductance that disturbs for anti-EMI common mode simultaneously, difference mode signal more and more is subjected to people's attention, but be confined to cylinder U-shaped, E shape magnetic core and enamelled wire coiling in the market, these all are difficult to satisfy the requirement of Switching Power Supply miniaturization.
Summary of the invention:
The technical problem to be solved in the present invention overcomes above prior art shortcoming exactly, provides a kind of simple in structure, uses flexibly the integrated inductor based on the difference common mode filtering,
Technical problem of the present invention is solved by following scheme.
A kind of integrated inductor based on the difference common mode filtering is provided with two or the connection of even number same core symmetry, has two bar magnet jacks in the centre of magnetic core; Be provided with two bar magnets be inserted in respectively in the bar magnet jack; Coil is wrapped on the magnetic core.
The invention has the beneficial effects as follows, can be by changing the structure of magnetic core, different common mode magnetic circuit (b is set, c), (a d), produces the inductance of required different numbers in the circuit to the differential mode magnetic circuit, magnetic core by different materials forms different composite magnetic circuits with bar magnet, reduced the volume and height of filter passive device, improved the utilance of magnetic spare, for the integrated particularly Switching Power Supply of power electronic system provides technical support.
The present invention have integrated degree higher, more save cost, more comply with the advantage of Switching Power Supply components and parts developing direction.
Further set forth content of the present invention below in conjunction with drawings and Examples.
Description of drawings:
Fig. 1 is two magnetic core integrated inductors of the present invention structural representation;
Fig. 2 is the perspective view of single magnetic core.
Embodiment:
A kind of integrated inductor based on the difference common mode filtering is provided with two or the 1 symmetry connection of even number same core, has two bar magnet jacks 3 in the centre of magnetic core; Being provided with two bar magnets 2 is inserted in respectively in the bar magnet jack; Coil 4 is wrapped on the magnetic core.
See Fig. 1, Fig. 2, the present invention cooperatively interacts with bar magnet 2 by the magnetic core 1 of different materials, can produce the different composite magnetic circuit of performance, has reduced the volume and height of filter passive device, improves the utilance of magnetic spare.Inductance value was adjusted in the gap of magnetic core about common mode inductance b, c magnetic circuit can adjust.Inductance value was adjusted in the gap of magnetic core about differential mode inductance a, d magnetic circuit can adjust.Common mode inductance can be set the even number magnetic track as required, and the present invention is with 2 magnetic tracks (b, c magnetic track are example), and differential mode inductance can be set the even number magnetic track as required, and the present invention is with 2 magnetic tracks (a, d magnetic track are example).Input signal and output signal can reversing of position in the circuit connection procedure in the annexation in circuit for integrated inductor, because the differential mode inductance of integrated inductor and common mode inductance are regardless of direction.
Claims (1)
1. based on the integrated inductor of difference common mode filtering, be provided with two or the connection of even number same core symmetry, have two bar magnet jacks in the centre of magnetic core; Being provided with two bar magnets is inserted in respectively in the bar magnet jack; Coil is wrapped on the magnetic core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010168132 CN101986400A (en) | 2010-05-11 | 2010-05-11 | Integrated inductor based on differential mode and common mode filtering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010168132 CN101986400A (en) | 2010-05-11 | 2010-05-11 | Integrated inductor based on differential mode and common mode filtering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101986400A true CN101986400A (en) | 2011-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010168132 Pending CN101986400A (en) | 2010-05-11 | 2010-05-11 | Integrated inductor based on differential mode and common mode filtering |
Country Status (1)
| Country | Link |
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| CN (1) | CN101986400A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138569A (en) * | 2011-11-22 | 2013-06-05 | 法雷奥电机控制系统公司 | Converter which is designed to be used on motor vehicle and provides electric propulsive force circuit |
| CN108432106A (en) * | 2015-12-29 | 2018-08-21 | 英捷电力技术有限公司 | Output filter and power conversion system for power conversion system |
| CN114974833A (en) * | 2022-07-27 | 2022-08-30 | 四川虹锐电工有限责任公司 | Differential mode common mode magnetic shielding integrated choke coil |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB844399A (en) * | 1956-06-09 | 1960-08-10 | Standard Telephones Cables Ltd | Inductance coil |
| US20030116671A1 (en) * | 2001-12-21 | 2003-06-26 | Minebea Co., Ltd. | Drum type core with discrete structure |
| JP2007073903A (en) * | 2005-09-09 | 2007-03-22 | Toyota Industries Corp | Cored coil |
| CN101206947A (en) * | 2007-11-08 | 2008-06-25 | 浙江大学 | Inductance capacitance integrated structure implemented by flexible circuit board in EMI filter |
| CN201780839U (en) * | 2010-05-11 | 2011-03-30 | 云南电力试验研究院(集团)有限公司 | Integrated inductor based on differential-mode and common-mode filtering |
-
2010
- 2010-05-11 CN CN 201010168132 patent/CN101986400A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB844399A (en) * | 1956-06-09 | 1960-08-10 | Standard Telephones Cables Ltd | Inductance coil |
| US20030116671A1 (en) * | 2001-12-21 | 2003-06-26 | Minebea Co., Ltd. | Drum type core with discrete structure |
| JP2007073903A (en) * | 2005-09-09 | 2007-03-22 | Toyota Industries Corp | Cored coil |
| CN101206947A (en) * | 2007-11-08 | 2008-06-25 | 浙江大学 | Inductance capacitance integrated structure implemented by flexible circuit board in EMI filter |
| CN201780839U (en) * | 2010-05-11 | 2011-03-30 | 云南电力试验研究院(集团)有限公司 | Integrated inductor based on differential-mode and common-mode filtering |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138569A (en) * | 2011-11-22 | 2013-06-05 | 法雷奥电机控制系统公司 | Converter which is designed to be used on motor vehicle and provides electric propulsive force circuit |
| CN103138569B (en) * | 2011-11-22 | 2019-02-22 | 法雷奥电机控制系统公司 | Designed for providing the converter of the circuit of electric propulsion power on motor vehicle |
| CN108432106A (en) * | 2015-12-29 | 2018-08-21 | 英捷电力技术有限公司 | Output filter and power conversion system for power conversion system |
| CN108432106B (en) * | 2015-12-29 | 2021-08-20 | 英捷电力技术有限公司 | Power conversion system |
| CN114974833A (en) * | 2022-07-27 | 2022-08-30 | 四川虹锐电工有限责任公司 | Differential mode common mode magnetic shielding integrated choke coil |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110316 |