CN107195438A - The line EMI common-mode inductors of chip type three - Google Patents
The line EMI common-mode inductors of chip type three Download PDFInfo
- Publication number
- CN107195438A CN107195438A CN201710441453.1A CN201710441453A CN107195438A CN 107195438 A CN107195438 A CN 107195438A CN 201710441453 A CN201710441453 A CN 201710441453A CN 107195438 A CN107195438 A CN 107195438A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- magnetic core
- wire
- termination
- chip type
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
Abstract
The line EMI common-mode inductors of chip type three, including I shapes magnetic core, U-shaped magnetic core and the wire being wound on I shape magnetic cores；I shapes magnetic core, which includes magnetic, to be done and the magnetic termination located at its two ends, one end of magnetic termination is fitted to constitute magnetic loop with U-shaped magnetic core, at non-fit end of the magnetic termination with U-shaped magnetic core, provided with multiple paster pads, wire is wrapped in magnetic and done, and the termination of wire is electrically connected with paster pad respectively.Simple in construction, production and processing is convenient；The EMI filtering of certain frequency range is applicable to, the reinforced EMI common mode inhibitions of different frequency range can also be realized, so as to larger improve the EMI rejection abilities to network transformer.
Description
Technical field
This technology, which is disclosed, is related to EMI（Electro-Magnetic Interference, i.e. electromagnetic interference）Common mode inductance
Device, more particularly, to the line EMI common-mode inductors of chip type three.
Background technology
The inductor with EMI filter effects is widely used in internet electronic field.The inductor is typically using circle
The magnetic core of toroidal core or other shapes, and made using two-wire coiling.The common line EMI common-mode inductors of circular ring type three are needed
In the encapsulation for being assembled into a fixed appearance and size, and need artificial manual wound coil separated time and connect out payment to a porter, wicking, filling
The series of processes such as sealing.Because process is loaded down with trivial details, human cost is caused to greatly improve.
Although effect of traditional line EMI common-mode filters of circular ring type three with good suppression EMI, make traditional
The line EMI common-mode filters of circular ring type three can expend more human cost.And the system of the line common-mode filter of chip type three of the disclosure
Work can all realize automation, so as to reduce manual operation.In addition, using the line common-mode filter of chip type three of the disclosure,
SMT can also be directly used on the mainboard of user（Surface Mounting Technology, surface mounting technology）Operation comes
Assembling, to meet the reinforced EMI filtering requirements of varying environment requirement.
The content of the invention
The present invention seeks to for above the deficiencies in the prior art, design is a kind of simple in construction, and production and processing is convenient, electrically
Parameter is suitable for the requirement of the standards of IEEE 802.3, the core that also can be effectively matched with the driving of the electric current cake core of network transformer
The line EMI common-mode inductors of chip three.
The purpose of the present invention can be achieved through the following technical solutions；A kind of line EMI common-mode inductors of chip type three, including
I shapes magnetic core 1, U-shaped magnetic core 2 and the wire 3 being wound on I shape magnetic cores；I shapes magnetic core includes magnetic dry 10 and the magnetic end located at its two ends
First 11,12, one end of magnetic termination 11,12 is fitted to constitute magnetic loop with U-shaped magnetic core 2, in magnetic termination 11,12 and U-shaped magnetic core 2
Non- laminating end, provided with multiple paster pads 4, wire 3 is wrapped on magnetic dry 10, the termination of wire respectively with paster pad 4
Electrical connection.
The described line EMI common-mode inductors of chip type three, its paster pad 4 is located at the magnetic termination fitted with U-shaped magnetic core 2
11st, 12 other end.
The described line EMI common-mode inductors of chip type three, its paster pad 4 being located on magnetic termination 11,12 is 6,
The wire 3 being wrapped on magnetic dry 10 is three groups, and its each group is oriented to termination and electrically connected respectively with 6 solder joints 4.
The described line EMI common-mode inductors of chip type three, its I shapes magnetic core 1 and U-shaped magnetic core 2 use nickel zinc magnetic material.
The described line EMI common-mode inductors of chip type three, its wire 3 is QPN enamel-covered wires.
The described line EMI common-mode inductors of chip type three, the binding face of its I shapes magnetic core 1 and U-shaped magnetic core 2 is provided with magnetic-conductive adhesive.
A kind of line EMI common-mode inductor manufacture methods of chip type three, comprise the following steps：
Using full-automatic coiling, wire 3 is wound on the magnetic of I shapes magnetic core 1 dry 10, each wire reserves conducting wire end；
The termination of wire 3 is electrically connected with paster pad 4 respectively；
Above-mentioned I shapes magnetic core 1 is fitted with U-shaped magnetic core 2 to form conducting magnetic loop.
It is an advantage of the current invention that simple in construction, production and processing is convenient；The EMI filtering of certain frequency range is applicable to,
The reinforced EMI common mode inhibitions of different frequency range can be realized, so as to larger improve the EMI rejection abilities to network transformer.
Brief description of the drawings
Fig. 1 shows the I shape magnetic cores of the three line EMI common-mode inductors of one embodiment according to the disclosure；
Fig. 2 shows the U-shaped magnetic core of the three line EMI common-mode inductors of one embodiment according to the disclosure；
Fig. 3 shows the stereogram of the three line EMI common-mode inductors of one embodiment according to the disclosure.
Embodiment
According to the manufacture method of the line common-mode inductors of chip type EMI tri- of the disclosure, traditional common mode inductance by improving
Device shape design, dimensional structure, core material and wire winding so that chip type common-mode inductor can play Ethernet and want
The EMI inhibitory action asked.
As shown in Figure 1, Figure 2, Figure 3 shows, in one embodiment of the disclosure, chip type common-mode inductor includes I shape magnetic cores
1st, U-shaped magnetic core 2 and the wires 3 of QPN 180, and implement by full automatic special equipment the common-mode inductor manufacture of whole process.Root
According to one embodiment of the disclosure, the materials such as nickel zinc magnetic material can be used with U-shaped magnetic core 2 in wherein I shapes magnetic core 1, it is possible to use
Other materials.I shapes magnetic core 1 has multiple paster pads 4, and the plurality of paster pad can be used as drawing a little for wire 3, for electricity
The port of connection.Alternatively, at non-fit end of the magnetic termination 11,12 of I shapes magnetic core 1 with U-shaped magnetic core 2, provided with 6 paster welding
Point 4, the wire 3 as three line common-mode inductors（Signal wire pair）6 paster pad positions 4 of lead.I shapes magnetic core 1 and U-shaped magnetic
The laminating of core 2 forms conducting magnetic loop and effectively shields electromagnetic interference.All electrical parameters of the common-mode inductor disclosure satisfy that
IEEE 802.3 reinforced EMI suppresses to require so that can play a part of the suppression EMI interference of reinforcement in network application.
In one embodiment of the disclosure, the line common-mode inductor of chip type three is mainly using I shapes magnetic core 1 and the magnetic of U-shaped
Core 2 and QPN wires 3 manufacture to implement full-automatic coiling.The electrical parameter of manufactured chip type common-mode inductor is met
The raising version EMI of the system testings of IEEE 802.3 suppresses to require.Wherein nickel zinc magnetic material can also be used in I shapes magnetic core 1, U-shaped magnetic core 2
The materials such as material.It can increase multiple paster pads 4 on the magnetic termination 11,12 of I shapes magnetic core 1.Alternatively, wire 3 can use QPN
180 enamel-covered wires, carry out the full-automatic coiling of transformer coil.I shapes magnetic core 1 and U-shaped magnetic core patch is 2-in-1 so as to form conducting magnetic time
Road.The common-mode inductor element that positioning welding produces chip type can be carried out using automatic spot mode.Manufacture the line of chip type three
The method and step of EMI common-mode inductors includes：
Using full-automatic coiling, wire 3 is wound on the magnetic of I shapes magnetic core 1 dry 10, each wire reserves conducting wire end；
The termination of wire 3 is electrically connected with paster pad 4 respectively；
Above-mentioned I shapes magnetic core 1 is fitted with U-shaped magnetic core 2 to form conducting magnetic loop.
The order of steps above can take different order according to actual needs.
The present invention uses I shape magnetic cores, therefore, it is possible to complete the coiling to network transformer on fully automatic wire winding machine.Separately
Outside, using 6 solder joints on I shapes magnetic core 1 so that the common-mode signal line of inductor can be positioned well, and can effectively be adopted
Use SMD（Surface Mounting Device, surface mount device）Technology be mounted on mainboard.
According to one embodiment of the disclosure, in some frequency ranges, three line EMI inductors 3dB more than two-wire EMI inductors
Surplus.
The chip type common-mode inductor of the disclosure, which makes, realizes Full-automatic coiling and full-automatic spot welding positioning, therefore product
Uniformity is good, can avoid varying with each individual and cause properties of product deviation.
Claims (7)
1. a kind of line EMI common-mode inductors of chip type three, it is characterised in that：The inductor includes I shape magnetic cores（1）, U-shaped magnetic core
（2）And it is wound in the wire on I shape magnetic cores（3）；I shapes magnetic core is dry including magnetic（10）And the magnetic termination located at its two ends（11）、
（12）, magnetic termination（11）、（12）One end and U-shaped magnetic core（2）Laminating is to constitute magnetic loop, in magnetic termination（11）、（12）With U-shaped
Magnetic core（2）Non- laminating end, provided with multiple paster pads（4）, wire（3）Magnetic is wrapped in do（10）On, the termination point of wire
Not with paster pad（4）Electrical connection.
2. the line EMI common-mode inductors of chip type three according to claim 1, it is characterised in that：The paster pad（4）
Located at U-shaped magnetic core（2）The magnetic termination of laminating（11）、（12）The other end.
3. the line EMI common-mode inductors of chip type three according to claim 1 or 2, it is characterised in that：It is described to be located at magnetic end
Head（11）、（12）On paster pad（4）For 6, it is wrapped in magnetic and does（10）On wire（3）For three groups, its each group is oriented to
Termination respectively with 6 solder joints（4）Electrical connection.
4. the line EMI common-mode inductors of chip type three according to claim 1 or 2, it is characterised in that：The I shapes magnetic core（1）
And U-shaped magnetic core（2）Use nickel zinc magnetic material.
5. the line EMI common-mode inductors of chip type three according to claim 1 or 2, it is characterised in that：The wire（3）For
QPN enamel-covered wires.
6. the line EMI common-mode inductors of chip type three according to claim 1 or 2, it is characterised in that：The I shapes magnetic core（1）
With U-shaped magnetic core（2）Binding face be provided with magnetic-conductive adhesive.
7. a kind of line EMI common-mode inductor manufacture methods of chip type three, it is characterised in that comprise the following steps：
Using full-automatic coiling, by wire（3）It is wound in I shape magnetic cores（1）Magnetic do（10）On, each wire reserves conductor wire end
Head；
By wire（3）Termination respectively with paster pad（4）Electrical connection；
By above-mentioned I shapes magnetic core（1）With U-shaped magnetic core（2）Laminating is so as to form conducting magnetic loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710441453.1A CN107195438A (en) | 2017-06-13 | 2017-06-13 | The line EMI common-mode inductors of chip type three |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710441453.1A CN107195438A (en) | 2017-06-13 | 2017-06-13 | The line EMI common-mode inductors of chip type three |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107195438A true CN107195438A (en) | 2017-09-22 |
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ID=59877416
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710441453.1A Pending CN107195438A (en) | 2017-06-13 | 2017-06-13 | The line EMI common-mode inductors of chip type three |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101529537A (en) * | 2006-12-01 | 2009-09-09 | 株式会社村田制作所 | Common mode choke coil |
| CN102956344A (en) * | 2012-11-02 | 2013-03-06 | 华为技术有限公司 | Composite magnetic core structure and magnetic element |
| CN103268804A (en) * | 2013-05-10 | 2013-08-28 | 华为机器有限公司 | Surface adhered type magnetic device |
| CN103887041A (en) * | 2014-01-14 | 2014-06-25 | 深圳顺络电子股份有限公司 | Surface-mounted type common-mode choker and manufacturing method thereof |
| CN204651136U (en) * | 2015-04-01 | 2015-09-16 | 西北台庆科技股份有限公司 | The loop construction of tool common mode filtering or inductance effect |
-
2017
- 2017-06-13 CN CN201710441453.1A patent/CN107195438A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101529537A (en) * | 2006-12-01 | 2009-09-09 | 株式会社村田制作所 | Common mode choke coil |
| CN102956344A (en) * | 2012-11-02 | 2013-03-06 | 华为技术有限公司 | Composite magnetic core structure and magnetic element |
| CN103268804A (en) * | 2013-05-10 | 2013-08-28 | 华为机器有限公司 | Surface adhered type magnetic device |
| CN103887041A (en) * | 2014-01-14 | 2014-06-25 | 深圳顺络电子股份有限公司 | Surface-mounted type common-mode choker and manufacturing method thereof |
| CN204651136U (en) * | 2015-04-01 | 2015-09-16 | 西北台庆科技股份有限公司 | The loop construction of tool common mode filtering or inductance effect |
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Application publication date: 20170922 |