CN107424766A - A kind of integrated form network filtering device - Google Patents
A kind of integrated form network filtering device Download PDFInfo
- Publication number
- CN107424766A CN107424766A CN201710334084.6A CN201710334084A CN107424766A CN 107424766 A CN107424766 A CN 107424766A CN 201710334084 A CN201710334084 A CN 201710334084A CN 107424766 A CN107424766 A CN 107424766A
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- coil
- common mode
- filtering device
- integrated form
- magnetic core
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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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- 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
-
- 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
- H01F27/292—Surface mounted devices
-
- 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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/346—Preventing or reducing leakage fields
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
- Filters And Equalizers (AREA)
Abstract
The present invention discloses a kind of integrated form network filtering device, including magnetic core base, the first coiling position and the second coiling position are provided with the magnetic core base, primary coil and secondary coil are wound with the first coiling position, the primary coil is combined into transforming circuit with the secondary coil, the second coiling position is wound with common mode inductance coil, and the common mode inductance coil winding is into common mode inductance.By setting two coiling positions on same magnetic core base, the primary coil wound in first coiling position cooperatively forms transforming circuit with secondary coil, effect, the common mode inductance coils such as enhancing signal transmission distance, impedance matching, waveform reparation, signal noise suppression and high-voltage isolating can be played and turned to the common mode noise that can be reduced during common mode inductance is connected into circuit in circuit.
Description
Technical field
The present invention relates to network filtering device technical field, more particularly to a kind of integrated primary transformer coil and choke coil
Integrated form network filtering device.
Background technology
Network filter also known as network transformer, network isolation transformer, Ethernet transformer.Network filter mainly has
Strengthen the effects such as signal transmission, impedance matching, waveform reparation, signal noise suppression and high-voltage isolating.In ethernet device,
When connecing RJ45 (connector) by PHY (physical interface transceiver), centre can all add a network filter.When having connect network change
After depressor, it is mainly used in signal level coupling.There can be following effect：1. signal can be strengthened, make its transmission range farther；
2. being isolated from the outside die terminals, antijamming capability greatly enhances, and it is (thunderous that very big protective effect is added to chip
Hit)；3. when be connected to varying level (if any PHY chip be 2.5V, some PHY chips are 3.3V) network interface when, will not be to that
This equipment impacts.Specifically, network filter is made up of two components of transformer coil and choke coil, transformer coil and
Choke coil is two independent parts, and the position of occupancy is relatively more, is unfavorable for the miniaturization of ethernet device.
The content of the invention
It is an object of the invention to：A kind of integrated form network filtering device is provided, it can be by the transformation of network filter
Device coil becomes one with choke coil, reduces engaged position.
To use following technical scheme up to this purpose, the present invention：
On the one hand, there is provided a kind of integrated form network filtering device, including magnetic core base, be provided with the magnetic core base
One coiling position and the second coiling position, are wound with primary coil and secondary coil on the first coiling position, the primary coil with
The secondary coil is combined into transforming circuit, and the second coiling position is wound with common mode inductance coil, the common mode inductance coil
Turn to common mode inductance.
As a kind of perferred technical scheme, the magnetic core base is provided at both ends with first and second, and described
It is provided with the 3rd for isolating both between one coiling position and the second coiling position, described first, described second
With being respectively arranged with multiple separate pads on described 3rd.
As a kind of perferred technical scheme, the coiling whole story end of the primary coil is both secured to the institute of described first
State on pad, the coiling whole story end of the secondary coil is both secured on the pad of described 3rd, the common mode inductance
The whole story end of coil is individually fixed on the pad of described second and described 3rd.
As a kind of perferred technical scheme, the primary coil, the secondary coil and the common mode inductance coil
Whole story end is welded on the pad using butt-joint, laser welding or thermocompression bonding.
As a kind of perferred technical scheme, the primary coil, the secondary coil and the common mode inductance coil
Quantity is two groups.
As a kind of perferred technical scheme, the spaced setting in whole story end of every group of coil of the primary coil, institute
State the spaced setting in whole story end of every group of coil of secondary coil.
As a kind of perferred technical scheme, in addition to upper lid, it is described upper to be covered on the magnetic core base.
As a kind of perferred technical scheme, set fluted on the upper lid, be provided with the magnetic core base and institute
State the boss of groove grafting cooperation；Or,
Boss is provided with the upper lid, the groove coordinated with the boss grafting is provided with the magnetic core base.
As a kind of perferred technical scheme, magnetic-conductive adhesive is filled between the boss and the groove.
As a kind of perferred technical scheme, the magnetic core base using nickel core material or uses one layer of ceramics of outside covering
The manganese core material manganese core material of insulator.
Beneficial effects of the present invention are：By setting two coiling positions on same magnetic core base, in the first coiling position
The primary coil of winding cooperatively forms transforming circuit with secondary coil, can play enhancing signal transmission distance, impedance matching, waveform
Effect, the common mode inductance coils such as reparation, signal noise suppression and high-voltage isolating are connected into circuit by common mode inductance is turned to
The common mode noise in circuit can be reduced.
Brief description of the drawings
The present invention is described in further detail below according to drawings and examples.
Fig. 1 is integrated form network filtering device dimensional structure diagram described in embodiment.
Fig. 2 is integrated form network filtering device elevational schematic view described in embodiment.
Fig. 3 is superstructure schematic diagram described in embodiment.
Fig. 4 is magnetic core understructure schematic diagram described in embodiment.
Fig. 5 is the circuit diagram of integrated form network filtering device described in embodiment.
Fig. 6 is the circuit connection diagram of integrated form network filtering device described in embodiment.
Fig. 7 is the circuit connection diagram of integrated form network filtering device described in another embodiment.
In figure：
100th, magnetic core base；101st, the first coiling position；102nd, the second coiling position；103rd, primary coil；104th, secondary coil；
105th, common mode inductance coil；106th, first；107th, second；108th, the 3rd；109th, pad；110th, upper lid；111st, boss；
112nd, groove.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
As shown in figs. 1 to 6, in the present embodiment, a kind of integrated form network filtering device of the present invention, including magnetic core
Base 100, the first coiling position 101 and the second coiling position 102, the first coiling position 101 are provided with the magnetic core base 100
On be wound with primary coil 103 and secondary coil 104, the primary coil 103 is combined into change piezoelectricity with the secondary coil 104
Road, the second coiling position 102 are wound with common mode inductance coil 105, and the common mode inductance coil 105 turns to common mode inductance.
By setting two coiling positions, the primary coil wound in the first coiling position 101 on same magnetic core base 100
103 cooperatively form transforming circuit with secondary coil 104, can play enhancing signal transmission distance, impedance matching, waveform reparation, letter
The effect such as number clutter recognition and high-voltage isolating, common mode inductance coil 105, which is turned to during common mode inductance is connected into circuit, to be subtracted
Common mode noise in few circuit.
As a kind of perferred technical scheme, the magnetic core base 100 is provided at both ends with first 106 and second
107, the 3rd 108 for isolating both, institute are provided between the first coiling position 101 and the second coiling position 102
State first 106, it is described second 107 with described 3rd 108 on be respectively arranged with multiple separate pads 109.
Specifically, magnetic core base includes magnetic core array and be successively set on the magnetic core array first, the 3rd and the
Two, described first and it is described 3rd between there is the first holding tank, i.e. the first coiling position, described 3rd and described the
There is the second holding tank, i.e. the second coiling position between two.
Further, the coiling whole story end of the primary coil 103 is both secured to the pad of described first 106
On 109, the coiling whole story end of the secondary coil 104 is both secured on the pad 109 of described 3rd 108, described common
The whole story end of mould inductance coil 105 is individually fixed on the pad 109 of described second 107 and described 3rd 108.
By setting first between the both ends of magnetic core base 100 and the first coiling position 101 and the second coiling position 102
106th, second 107 and the 3rd 108, and it is provided for fixed coil in first 106, second 107 and the 3rd 108
The pad 109 at whole story end, can convenient use and identification, prevent wrong port in use, cause equipment damage and
Unnecessary loss.
Further, the primary coil 103, the whole story of the secondary coil 104 and the common mode inductance coil 105
End is welded on the pad 109 using butt-joint, laser welding or thermocompression bonding.Will using butt-joint, laser welding or thermocompression bonding
The whole story end of coil, which is welded to, can ensure that the whole story end of coil is fixed on pad 109 by firm on pad 109.
In a preferable scheme, the primary coil 103, the secondary coil 104 and the common mode inductance coil
105 quantity is two groups.
The primary coil 103, secondary coil 104 and common mode inductance coil 105 for being two groups of settings can be by lattice networks
Output or input may be contained within same network filter, reduce the position of occupancy.
Further, the spaced setting in whole story end of every group of coil of the primary coil 103, the secondary coil
The spaced setting in whole story end of 104 every group of coil.
As shown in Fig. 2,5,7, in a specific embodiment, primary coil and secondary coil include two groups of lines respectively
Circle, primary coil include first coil and the second coil, and secondary coil includes tertiary coil and the 4th coil.1 port and 3 in figure
Port is respectively the top and end of first coil；2 ports and 4 ports are respectively the top and end of the second coil in figure；Figure
In 5 ports and 7 ports be respectively tertiary coil top and end；6 ports and 8 ports are respectively the top of the 4th coil in figure
And end.First coil, the second coil, tertiary coil and the 4th coil are successively around being located in the first coiling position.First Line
The top and end of circle and the second coil are intervally arranged in magnetic core base according to the order of 1 port, 2 ports, 3 ports, 4 ports
On first；The top and end of third and fourth coil are arranged at intervals according to the order of 5 ports, 6 ports, 7 ports, 8 ports
At the 3rd close to the side of the first coiling position.
Common mode inductance coil includes the 5th coil and the 6th coil.9 ports and 11 ports are respectively the 5th coil in figure
Top and end；10 ports and 12 ports are respectively the top and end of the 6th coil.5th coil and the 6th coil successively around
It is located in the second coiling position.9 ports and 11 ports are respectively arranged on the 3rd and second, and 10 ports and 12 ports are set respectively
Put on the 3rd and second.
Preferably, between first coil and the second coil, between the second coil and tertiary coil, tertiary coil and the 4th line
NULL is respectively arranged between circle to carry out every magnetic treatment, prevents influence from influencing each other to form mutual inductance phenomenon.
The whole story end of spaced same coil can be more convenient to set, and improve operability, more effectively prevent port
Short-circuit conditions appearance.
As a kind of perferred technical scheme, in addition to upper lid 110, the upper lid 110 are covered on the magnetic core base 100
On.
Specifically, setting fluted 112 on the upper lid 110, the magnetic core base 100 is provided with and the groove grafting
The boss 111 of cooperation.In other embodiments, the position of boss and groove can also be exchanged, i.e.,：It is provided with the upper lid
Boss, the groove coordinated with the boss grafting is provided with the magnetic core base.
Further, it is filled with magnetic-conductive adhesive between the boss 111 and the groove 112.
By setting upper lid 110 to cooperatively form the magnetic circuit entirety of a closure with magnetic core base 100, the magnetic circuit of closure is not
Leakage field can be produced, and then prevents the interference to peripheral circuits, while the extraneous magnetic field of sensing can be avoided, strengthens filtering performance.
Preferably, the magnetic core base 100 is made using nickel core material or manganese core material, and outer layer covering is provided with pottery
Porcelain insulating medium.
In the specific embodiment of the present invention, a kind of integrated form network filtering device of the present invention is as net
The wiring sketch that network wave filter uses is as shown in Figure 6.Specific wiring is as follows：
1st, by 2 port short circuits of 3 ports of first coil and the second coil, by 7 ports of tertiary coil and the 4th coil
6 port short circuits, and draw a lead 13 and lead 14 respectively and used as colelctor electrode, according to use in specific use
PHY chip type colelctor electrode is connected to power supply, ground connection or hanging；
2nd, PHY TD+ is connected on 1 port of first coil, and PHY TD- is connected on 4 ports；Or, will
The RD+ of PHY transmitting end is connected on 1 port of first coil, and the RD- of the transmitting end of lattice network is connected into 4 ports
On
3rd, 9 ports of 5 ports of tertiary coil and the 5th coil are subjected to short circuit, and by 8 ports of the 4th coil and the
10 ports of six coils carry out short circuit processing；
4th, RJ45 TX+ is connected on 11 ports of the 5th coil, and RJ45 TX- is connected to the 12 of the 6th coil
On port；Or, be connected to RJ45 RX+ on 11 ports of the 5th coil, and RJ45 RX- is connected to the 12 of the 6th coil
On port.
The differential signal that PHY is sent out in foregoing circuit passes through first coil, the second coil, tertiary coil and the 4th coil
The transforming circuit being combined into can strengthen signal, and because signal from first coil and the second coil flows to tertiary coil and the 4th line
Enclose without by connection physically, separated the DC component in signal, it may include the network equipment is not destroyed.Signal is from
Three-winding and the 4th coil flow into the 5th coil and the 6th coil after coming out, because the 5th coil and the 6th coil are common mode inductance
Coil, the common mode noise in signal can cut down or even eliminated, finally give reliable and stable signal.
In another embodiment of the present invention, as shown in fig. 7, integrated form network filtering device provided by the invention can be made
Used for multiple common mode inductance components, can be according to actual conditions by first coil, the second coil, tertiary coil, the 4th coil, the
Five coils and the 6th coil carry out serial or parallel connection use.
Specifically, due to first coil, the second coil, tertiary coil, the 4th coil, the 5th coil and the 6th coil two-by-two
Between be provided with NULL carry out every magnetic treatment, the first coil, the second coil, tertiary coil, the 4th coil, the 5th line
Circle and the 6th coil can use as single common mode inductance.The one of which mode of connection is as follows：
Needing using first coil, the second coil, tertiary coil, the 4th coil, the 5th coil and the 6th coil as single
Individual common mode inductance is in use, respectively by first coil, the second coil, tertiary coil, the 4th coil, the 5th coil and the 6th coil
Whole story end be connected in series to corresponding to relevant position in circuit can normal use；
It is any in needing than first coil, the second coil, tertiary coil, the 4th coil, the 5th coil and the 6th coil
During the smaller inductance of the inductance value of individual coil, can by first coil, the second coil, tertiary coil, the 4th coil, the 5th coil and
6th coil two or more progress tops therein and end difference short circuit, then draw lead and are linked into position corresponding to circuit
Put.Such as：When needing first coil and the second coils from parallel connection of coils, the first lead can will be drawn behind 1 port and 2 port short circuits,
And the second lead will be drawn behind 3 ports and 4 port short circuits, the first lead and the second lead are finally linked into the corresponding position of circuit
Put.
It is any in needing than first coil, the second coil, tertiary coil, the 4th coil, the 5th coil and the 6th coil
During the bigger inductance of the inductance value of individual coil, can by first coil, the second coil, tertiary coil, the 4th coil, the 5th coil and
6th coil two or more progress tops therein connect with terminal tandem, then draw lead and are linked into position corresponding to circuit
Put.Such as：, can be by 2 ports and 3 port short circuits, by 1 port and 4 ports when needing to connect first coil with the second coil
It is linked into the correspondence position of circuit.
In other embodiments, also more coils can be subjected to serial or parallel connection to obtain the common mode of suitable inductance value
Inductance.
In description herein, it is to be understood that term " first ", " second ", " the 3rd ", " the 4th ", " the 5th ",
" the 6th " is only used for being distinguish between in description, without particular meaning.
It is to be understood that above-mentioned embodiment is only that presently preferred embodiments of the present invention and institute's application technology are former
Reason, in technical scope disclosed in this invention, change that any one skilled in the art is readily apparent that or
Replace, should all cover within the scope of the present invention.
Above by specific embodiment, the present invention is described, but the present invention is not limited to these specific implementations
Example.It will be understood by those skilled in the art that various modifications, equivalent substitution, change etc. can also be made to the present invention.But this
A little conversion, all should be within protection scope of the present invention without departing from the spirit of the present invention.In addition, present specification and power
Some terms used in sharp claim are not limitation, it is only for are easy to describe.In addition, " one described in above many places
Individual embodiment ", " another embodiment " etc. represent different embodiments, naturally it is also possible to which its all or part is incorporated in into one
In embodiment.
Claims (10)
1. a kind of integrated form network filtering device, it is characterised in that including magnetic core base, first is provided with the magnetic core base
Coiling position and the second coiling position, primary coil and secondary coil, the primary coil and institute are wound with the first coiling position
State secondary coil and be combined into transforming circuit, the second coiling position is wound with common mode inductance coil, the common mode inductance coil around
Common mode inductance is made.
2. integrated form network filtering device according to claim 1, it is characterised in that the both ends of the magnetic core base are set
There are first and second, the 3rd for isolating both is provided between the first coiling position and the second coiling position
Portion, described first, it is described second with being respectively arranged with multiple separate pads on described 3rd.
3. integrated form network filtering device according to claim 2, it is characterised in that the coiling whole story of the primary coil
End is both secured on the pad of described first, and the coiling whole story end of the secondary coil is both secured to described 3rd
On the pad, the whole story end of the common mode inductance coil is individually fixed in the pad of described second and described 3rd
On.
4. integrated form network filtering device according to claim 3, it is characterised in that the primary coil, the secondary
The whole story end of coil and the common mode inductance coil is welded on the pad using butt-joint, laser welding or thermocompression bonding.
5. integrated form network filtering device according to claim 4, it is characterised in that the primary coil, the secondary
The quantity of coil and the common mode inductance coil is two groups.
6. integrated form network filtering device according to claim 5, it is characterised in that every group of coil of the primary coil
The spaced setting in whole story end, the spaced setting in whole story end of every group of coil of the secondary coil.
7. integrated form network filtering device according to claim 1, it is characterised in that also including upper lid, the upper lid lid
On the magnetic core base.
8. integrated form network filtering device according to claim 7, it is characterised in that set on the upper lid it is fluted,
The boss coordinated with the groove grafting is provided with the magnetic core base；Or,
Boss is provided with the upper lid, the groove coordinated with the boss grafting is provided with the magnetic core base.
9. integrated form network filtering device according to claim 8, it is characterised in that between the boss and the groove
Filled with magnetic-conductive adhesive.
10. integrated form network filtering device according to claim 1, it is characterised in that the magnetic core base uses nickel core
Material or the manganese core material for using one layer of ceramics insulator of outside covering.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710334084.6A CN107424766A (en) | 2017-05-12 | 2017-05-12 | A kind of integrated form network filtering device |
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| CN201710334084.6A CN107424766A (en) | 2017-05-12 | 2017-05-12 | A kind of integrated form network filtering device |
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| CN201710334084.6A Pending CN107424766A (en) | 2017-05-12 | 2017-05-12 | A kind of integrated form network filtering device |
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| CN108987071A (en) * | 2018-08-27 | 2018-12-11 | 遂宁普思电子有限公司 | Transformer and preparation method thereof |
| TWI655648B (en) * | 2018-09-05 | 2019-04-01 | 西北臺慶科技股份有限公司 | Integrated coil structure (3) |
| TWI656544B (en) * | 2018-02-27 | 2019-04-11 | 宏致電子股份有限公司 | Four-in-one network transmission pulse wafer |
| CN110164659A (en) * | 2019-07-02 | 2019-08-23 | 鸿磬电子（东莞）有限公司 | A kind of SMD magnetic core original part structure that performance is stable |
| CN110993294A (en) * | 2019-12-09 | 2020-04-10 | 广东美信科技股份有限公司 | Flat transformer and electric equipment |
| WO2020199148A1 (en) * | 2019-04-03 | 2020-10-08 | 杭州涂鸦信息技术有限公司 | Network port filter and network device |
| CN112117105A (en) * | 2019-06-19 | 2020-12-22 | 德阳帛汉电子有限公司 | Filtering transformer |
| CN117198710A (en) * | 2023-11-08 | 2023-12-08 | 广东省洛仑兹技术股份有限公司 | Common-mode inductor, winding method thereof and power supply device |
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| CN110993294B (en) * | 2019-12-09 | 2021-08-17 | 广东美信科技股份有限公司 | Flat transformer and electric equipment |
| CN117198710A (en) * | 2023-11-08 | 2023-12-08 | 广东省洛仑兹技术股份有限公司 | Common-mode inductor, winding method thereof and power supply device |
| CN117198710B (en) * | 2023-11-08 | 2024-04-02 | 广东省洛仑兹技术股份有限公司 | Common-mode inductor, winding method thereof and power supply device |
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Application publication date: 20171201 |