CN102360725A - Magnetic differential mode and common mode integrated inductor - Google Patents
Magnetic differential mode and common mode integrated inductor Download PDFInfo
- Publication number
- CN102360725A CN102360725A CN2011102031621A CN201110203162A CN102360725A CN 102360725 A CN102360725 A CN 102360725A CN 2011102031621 A CN2011102031621 A CN 2011102031621A CN 201110203162 A CN201110203162 A CN 201110203162A CN 102360725 A CN102360725 A CN 102360725A
- Authority
- CN
- China
- Prior art keywords
- magnetic core
- magnetic
- winding
- mode
- differential mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to a magnetic differential mode and common mode integrated inductor, which comprises a magnetic core, and a first winding and a second winding which are wound on the magnetic core, wherein the magnetic core is assembled by a first magnetic core and a second magnetic core which are made from different materials. Functions of two inductors, namely a differential mode inductor and a common mode inductor, are integrated on the same inductor, so a magnetic circuit is more optimized and high in integration degree; and the magnetic differential mode and common mode integrated inductor has the characteristic of realizing flattening, along with high power density, small distribution parameter, low loss, high reliability, more complete filtration performance, flexibility in installation style, low electromagnetic interference (EMI) on the closed magnetic circuit and the like.
Description
Technical field
The present invention relates to a kind of differential mode, common mode one magnetic integrated inductor, belong to magnetic material and inductance technical field.
Background technology
Along with electronic circuit develops to high frequencyization, high power density, high reliability, high integration; Also brought electromagnetic interference problem widely thereupon; Therefore electromagnetic interface filter will be widely used in electronic circuit; Like AC power inlet wire filter, Switching Power Supply output filter etc., the Primary Component and common-mode inductor, differential mode inductance device are absolutely necessary.Common-mode inductor in traditional EMI filter circuit often uses independent differential mode inductance device and common-mode inductor, can cause so expensive, take shortcomings such as circuit space is big, power density is low, distributed constant is big, reliability is low, manufacture craft standardization difference; Especially can not satisfy the requirement of the film inductor of the aluminium base technological requirement that present high power switching power supply uses.
Summary of the invention
To the deficiency of prior art, the technical problem that the present invention solves provides a kind of differential mode, common mode one magnetic integrated inductor.
For solving the problems of the technologies described above; Technical scheme of the present invention can realize like this: a kind of differential mode, common mode one magnetic integrated inductor; Comprise magnetic core and be wrapped in first winding and second winding on the magnetic core; Said magnetic core is combined by material different first magnetic core and second magnetic core, is electrically connected the function that realizes differential mode and common-mode inductor simultaneously through winding.
Further, said first magnetic core is ceramic ferrite soft magnetic core or the noncrystal magnetic core with high permeability characteristic; Second magnetic core is processed by the metal soft magnetic material with high Bs, high DC stacked characteristic.
Further, said metal soft magnetic material is ferrocart core, ferro-silicium magnetic core, Fe-Si-Al magnetic core, iron nickel molybdenum magnetic core, iron nickel magnetic core, noncrystal powder magnetic core or noncrystal magnetic core.
Further, the magnetic permeability scope of said first magnetic core is at 200-100000.
Further; Said magnetic core is Rotate 180 degree " order " font; First magnetic core is
shape, and second magnetic core is cuboid or cylindrical shape.
Further; Said magnetic core is Rotate 180 degree " order " font; First magnetic core is
shape, and second magnetic core is cuboid or cylindrical shape.
Further, said first winding, second winding are that PCB covers copper winding, enamel insulated round copper wire winding, three layer insulation wire winding, enamel-cover flat type copper wire winding or Copper Foil overlay film winding.
Further, first winding, second winding are PCB when covering the copper winding, between first winding and second winding insulating material can be set and isolate.
Further, said first magnetic core, second magnetic core connect assembly unit successively, and scribble binding agent at the place of being bonded with each other.
Further, said binding agent is epoxy resin, phenolic resins or polyimide resin.
Compared with prior art; The invention has the beneficial effects as follows: the function of integrated differential mode of while and two kinds of inductors of common mode on an inductor; Magnetic circuit is optimized more, integrated level is high, have higher power density, can realize flattening, distributed constant is little, low-loss, high reliability, filtering performance more thoroughly, installation form flexibly, closed magnetic circuit EMI disturbs characteristics such as little.
Description of drawings
Assembly drawing for differential mode of the present invention, common mode one magnetic integrated inductor first execution mode shown in Figure 1;
Assembly drawing for differential mode of the present invention, common mode one magnetic integrated inductor second execution mode shown in Figure 2;
Fig. 3-1 is the structure chart of magnetic core in differential mode of the present invention, common mode one magnetic integrated inductor first execution mode;
Fig. 3-2 is the cutaway view of Fig. 3-1 along the A-A line;
Fig. 4-1 is the structure chart for magnetic core in differential mode of the present invention, common mode one magnetic integrated inductor second execution mode;
Fig. 4-2 is the cutaway view of Fig. 4-1 along the B-B line;
Fig. 5 is when common-mode signal is passed through, the circuit theory diagrams of differential mode of the present invention, common mode one magnetic integrated inductor;
Fig. 6 is when the differential mode signal passes through, the circuit theory diagrams of differential mode of the present invention, common mode one magnetic integrated inductor.
Embodiment
Below in conjunction with embodiment differential mode of the present invention, common mode one magnetic integrated inductor are elaborated.
Like Fig. 1 or shown in Figure 2; Inductor of the present invention is a kind of differential mode, common mode one magnetic integrated inductor; Comprise magnetic core 100 and be wound in first winding 200 and second winding 300 on the magnetic core 100; First winding split out first the end of a thread 1 in 200 minutes and second the end of a thread, 2, the second windings split out the 3rd the end of a thread 3 and the 4th the end of a thread 4 in 300 minutes.Said magnetic core 100 is shaped as class " order " font of Rotate 180 degree, combines through two kinds of unlike material magnetic cores, is defined as first magnetic core 101 and second magnetic core 102 respectively.First magnetic core 101 is for having ceramic ferrite soft magnetic core or the noncrystal magnetic core of monomer magnetic permeability scope in the high permeability characteristic of 200-100000; Second magnetic core 102 is metal soft magnetic material with high Bs, high DC stacked characteristic such as ferrocart core, ferro-silicium magnetic core, Fe-Si-Al magnetic core, iron nickel molybdenum magnetic core, iron nickel magnetic core, noncrystal powder magnetic core, noncrystal magnetic core; Whole magnetic core 100 is connected assembly unit by first magnetic core 101 with second magnetic core 102 successively, and scribbles binding agent at the place of being bonded with each other.Said binding agent is epoxy resin, phenolic resins or polyimide resin.Said first winding 200 can be that PCB covers several kinds of forms such as copper winding (two windings can be done to be in the same place, also divisible opening), enamel insulated round copper wire winding, three layer insulation wire winding, enamel-cover flat type copper wire winding, Copper Foil overlay film winding with second winding 300; When covering the copper winding configuration, can directly be made in winding in the circuit pcb board and also can separate with the PCB circuit board for PCB.Walking around two windings is not a Whole PC B form, and two winding adjacent parts must use insulating material 400 to isolate.In the preferred version, insulating material is insulation division board or dielectric film.
Shown in Fig. 2-1 and Fig. 2-2, be the structure chart of first embodiment of the invention magnetic core 100.First magnetic core 101 is divided into identical up and down two parts and is combined into
type; 102 of second magnetic cores are rectangular shape, also can be cylindrical shape certainly.In the assembling process, at first carry out bonding combination to the half the of first magnetic core 101 with second magnetic core 102 (being two in this execution mode).According to magnetic core size and the suitable winding mode of current design; Tradition type magnetic core form; Operating current is that little electric current can adopt enamel-cover circle line or three layer insulation wire to make winding, and operating current is that big electric current can adopt enamel-cover flat type copper wire, silk-covered wire, Copper Foil overlay film winding; Plane class magnetic core; According to magnetic core size and the suitable winding mode of current design; Tradition type magnetic core form; Operating current is that little electric current can adopt enamel-cover circle line or three layer insulation wire, cover copper PCB making winding, and operating current is that big electric current can adopt enamel-cover flat type copper wire, silk-covered wire, Copper Foil overlay film winding to do winding; Also can directly be plotted in winding on the PCB of circuit use.Install to the good winding cover of coiling on half second magnetic core 102 that bonds together with first magnetic core 101.And then corresponding first magnetic core 101 second half carries out bonding combination with second magnetic core 102 that has assembled winding.
Shown in Fig. 4-1 and Fig. 4-2, be the structure chart of second embodiment of the invention magnetic core 100.First magnetic core 101 is divided into identical up and down two parts and is combined into
type; 102 of second magnetic cores are rectangular shape, also can be cylindrical shape certainly.In the assembling process, at first carry out bonding combination to the half the of first magnetic core 101 with second magnetic core 102 (being two in this execution mode).According to magnetic core size and the suitable winding mode of current design; Tradition type magnetic core form; Operating current is that little electric current can adopt enamel-cover circle line or three layer insulation wire to make winding, and operating current is that big electric current can adopt enamel-cover flat type copper wire, silk-covered wire, Copper Foil overlay film winding; Plane class magnetic core; According to magnetic core size and the suitable winding mode of current design; Tradition type magnetic core form; Operating current is that little electric current can adopt enamel-cover circle line or three layer insulation wire, cover copper PCB making winding, and operating current is that big electric current can adopt enamel-cover flat type copper wire, silk-covered wire, Copper Foil overlay film winding to do winding; Also can directly be plotted in winding on the PCB of circuit use.Install to the good winding cover of coiling on the intermediolateral column 103 of first magnetic core bonding formation of two parts about in the of 101.
Like Fig. 5 and shown in Figure 6, when common-mode signal was passed through, first the end of a thread 1 was identical with the sense of current of the 3rd the end of a thread 3, when the differential mode signal passes through, and the current opposite in direction of first the end of a thread 1 and the 3rd the end of a thread 3.Through magnetic Circuit Design and two winding end of the same name being connected in circuit, thereby be implemented in common-mode signal when two windings of inductor, two magnetic fluxs in the winding strengthened each other so that inductor embodies the high-impedance behavior to common-mode signal; When making difference mode signal pass through two windings of inductor through magnetic Circuit Design and two winding end of the same name being connected in circuit; Magnetic flux in two windings is mainly through forming the loop with the magnetic core two end portions separately, at this moment mainly embodies the differential mode inductance device to the high-impedance behavior of difference mode signal, possess high DC stacked characteristic simultaneously.
Differential mode of the present invention, common mode one magnetic integrated inductor; Be electrically connected the function that possesses differential mode inductance device and common-mode inductor simultaneously through winding; And can realize high power density, high frequencyization, complanation; Have high reliability simultaneously, make characteristics such as standardization more, cost are low, convenient and flexible installation.
Above embodiment is merely the preferred embodiments of this creation, not in order to limiting this creation, any modification of being made within all spirit and principles in this creation, is equal to replacement, improvement etc., all should be included within the protection range of this creation.
Claims (10)
1. a differential mode, common mode one magnetic integrated inductor; Comprise magnetic core and be wrapped in first winding and second winding on the magnetic core; It is characterized in that: said magnetic core is combined by material different first magnetic core and second magnetic core, is electrically connected the function that realizes differential mode and common-mode inductor simultaneously through winding.
2. differential mode as claimed in claim 1, common mode one magnetic integrated inductor is characterized in that: said first magnetic core is ceramic ferrite soft magnetic core or the noncrystal magnetic core with high permeability characteristic; Second magnetic core is processed by the metal soft magnetic material with high Bs, high DC stacked characteristic.
3. differential mode as claimed in claim 2, common mode one magnetic integrated inductor is characterized in that: said metal soft magnetic material is ferrocart core, ferro-silicium magnetic core, Fe-Si-Al magnetic core, iron nickel molybdenum magnetic core, iron nickel magnetic core, noncrystal powder magnetic core or noncrystal magnetic core.
4. differential mode as claimed in claim 2, common mode one magnetic integrated inductor, it is characterized in that: the magnetic permeability scope of said first magnetic core is at 200-100000.
5. differential mode as claimed in claim 1, common mode one magnetic integrated inductor; It is characterized in that: said magnetic core is " order " font of Rotate 180 degree; First magnetic core is
shape, and second magnetic core is cuboid or cylindrical shape.
6. differential mode as claimed in claim 1, common mode one magnetic integrated inductor; It is characterized in that: said magnetic core is " order " font of Rotate 180 degree; First magnetic core is
shape, and second magnetic core is cuboid or cylindrical shape.
7. like each described differential mode, common mode one magnetic integrated inductor in the claim 1 to 6, it is characterized in that: said first winding, second winding are that PCB covers copper winding, enamel insulated round copper wire winding, three layer insulation wire winding, enamel-cover flat type copper wire winding or Copper Foil overlay film winding.
8. differential mode as claimed in claim 7, common mode one magnetic integrated inductor is characterized in that: first winding, second winding are PCB when covering the copper winding, between first winding and second winding insulating material can be set and isolate.
9. like each described differential mode, common mode one magnetic integrated inductor in the claim 1 to 6, it is characterized in that: said first magnetic core, second magnetic core connect assembly unit successively, and scribble binding agent at the place of being bonded with each other.
10. differential mode as claimed in claim 9, common mode one magnetic integrated inductor, it is characterized in that: said binding agent is epoxy resin, phenolic resins or polyimide resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102031621A CN102360725A (en) | 2011-07-20 | 2011-07-20 | Magnetic differential mode and common mode integrated inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102031621A CN102360725A (en) | 2011-07-20 | 2011-07-20 | Magnetic differential mode and common mode integrated inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102360725A true CN102360725A (en) | 2012-02-22 |
Family
ID=45586019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102031621A Pending CN102360725A (en) | 2011-07-20 | 2011-07-20 | Magnetic differential mode and common mode integrated inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102360725A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646764A (en) * | 2013-11-28 | 2014-03-19 | 宝电电子(张家港)有限公司 | Differential-mode and common-mode integrated electronic transformer |
| WO2015085838A1 (en) * | 2013-12-12 | 2015-06-18 | 伊顿公司 | Integrated inductor |
| CN104810137A (en) * | 2014-01-28 | 2015-07-29 | Tdk株式会社 | Reactor |
| CN105719784A (en) * | 2014-07-23 | 2016-06-29 | 杨玉岗 | Integrated magnetic coupled inductor in the shape of Chinese character mu |
| CN106158225A (en) * | 2016-08-31 | 2016-11-23 | 广东美的制冷设备有限公司 | High low pass Combined Filter magnetic core, electric elements and electric equipment |
| CN106856140A (en) * | 2015-12-09 | 2017-06-16 | 乐金电子研发中心(上海)有限公司 | The common mode differential mode integrated inductor of bimag spatially interlaced arrangement |
| 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 |
|---|---|---|---|---|
| US5731666A (en) * | 1996-03-08 | 1998-03-24 | Magnetek Inc. | Integrated-magnetic filter having a lossy shunt |
| CN1790563A (en) * | 2004-12-15 | 2006-06-21 | 台达电子工业股份有限公司 | Choke coil and its embedded iron core |
| CN1870188A (en) * | 2005-05-27 | 2006-11-29 | 台达电子工业股份有限公司 | Choking coil |
| CN2929923Y (en) * | 2006-06-17 | 2007-08-01 | 李晓雨 | Common-mode inductor |
| CN201355570Y (en) * | 2009-01-19 | 2009-12-02 | 东莞普思电子有限公司珠海分公司 | EMI integrated inductor |
-
2011
- 2011-07-20 CN CN2011102031621A patent/CN102360725A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5731666A (en) * | 1996-03-08 | 1998-03-24 | Magnetek Inc. | Integrated-magnetic filter having a lossy shunt |
| CN1790563A (en) * | 2004-12-15 | 2006-06-21 | 台达电子工业股份有限公司 | Choke coil and its embedded iron core |
| CN1870188A (en) * | 2005-05-27 | 2006-11-29 | 台达电子工业股份有限公司 | Choking coil |
| CN2929923Y (en) * | 2006-06-17 | 2007-08-01 | 李晓雨 | Common-mode inductor |
| CN201355570Y (en) * | 2009-01-19 | 2009-12-02 | 东莞普思电子有限公司珠海分公司 | EMI integrated inductor |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646764A (en) * | 2013-11-28 | 2014-03-19 | 宝电电子(张家港)有限公司 | Differential-mode and common-mode integrated electronic transformer |
| CN103646764B (en) * | 2013-11-28 | 2016-07-13 | 惠州市宝电通科技有限公司 | Difference common mode Integral electronic transformator |
| US10121582B2 (en) | 2013-12-12 | 2018-11-06 | Eaton Intelligent Power Limited | Integrated inductor |
| WO2015085838A1 (en) * | 2013-12-12 | 2015-06-18 | 伊顿公司 | Integrated inductor |
| CN104810137A (en) * | 2014-01-28 | 2015-07-29 | Tdk株式会社 | Reactor |
| CN105719784B (en) * | 2014-07-23 | 2019-01-15 | 杨玉岗 | A kind of integrated coupling inductor of mu character shape magnetic |
| CN105719784A (en) * | 2014-07-23 | 2016-06-29 | 杨玉岗 | Integrated magnetic coupled inductor in the shape of Chinese character mu |
| CN106856140A (en) * | 2015-12-09 | 2017-06-16 | 乐金电子研发中心(上海)有限公司 | The common mode differential mode integrated inductor of bimag spatially interlaced arrangement |
| CN106856140B (en) * | 2015-12-09 | 2020-08-04 | 乐金电子研发中心(上海)有限公司 | Common mode and differential mode integrated inductor with double magnetic cores in three-dimensional staggered arrangement |
| CN106158225B (en) * | 2016-08-31 | 2018-09-11 | 广东美的制冷设备有限公司 | High low pass Combined Filter magnetic core, electric elements and electrical equipment |
| CN106158225A (en) * | 2016-08-31 | 2016-11-23 | 广东美的制冷设备有限公司 | High low pass Combined Filter magnetic core, electric elements and electric equipment |
| 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 |
| CN114974833B (en) * | 2022-07-27 | 2022-10-28 | 四川虹锐电工有限责任公司 | Differential mode and common mode magnetic shielding integrated choke coil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102360725A (en) | Magnetic differential mode and common mode integrated inductor | |
| TWI588849B (en) | Laminated magnetic component assembly | |
| CN104766694B (en) | Coil block and the plate for being equipped with coil block thereon | |
| JP4446487B2 (en) | Inductor and method of manufacturing inductor | |
| US20130038417A1 (en) | Coil component and manufacturing method thereof | |
| CN102449708A (en) | Miniature shielded magnetic component and methods of manufacture | |
| CN106971825B (en) | Coil component | |
| CN110301019B (en) | Transformer and switching power supply | |
| KR101338139B1 (en) | Power inductor | |
| US20150130577A1 (en) | Insulation planar inductive device and methods of manufacture and use | |
| KR100299893B1 (en) | Transformer | |
| KR20180025592A (en) | Coil component | |
| JP2017147321A (en) | Coil component, circuit board incorporating coil component, and power supply circuit including coil component | |
| CN109219859A (en) | The manufacturing method of LC device and LC device | |
| WO2016202949A1 (en) | A magnetic device | |
| CN202275686U (en) | Common mode inductor, common mode filter and switching mode power supply electromagnetic compatibility circuit | |
| CN105632682A (en) | Chip inductor and fabrication method thereof | |
| Otsuki et al. | SMD inductors based on soft-magnetic powder compacts | |
| CN204102695U (en) | Current transformer | |
| CN104217846A (en) | Inductor | |
| CN204668076U (en) | Common-mode inductor | |
| CN219046259U (en) | Power inductor with multiple combination forms made of atomized metal powder | |
| KR101617003B1 (en) | Bead for filtering noise | |
| CN108039266A (en) | A kind of flat wire bar magnet inductance | |
| CN218182016U (en) | Inductor of wave-blocking impedance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120222 |