CN217655743U - Magnetic module and electric connector with same - Google Patents

Abstract

The utility model discloses a magnetism module and have electric connector of this magnetism module, it includes the magnetic core and twines a plurality of enameled wires on the magnetic core, the enameled wire winding form primary and secondary on the magnetic core, the primary includes first enameled wire and second enameled wire, secondary includes third enameled wire and fourth enameled wire, first enameled wire with second root enameled wire forms first center and takes a percentage, third enameled wire with fourth enameled wire forms the second center and takes a percentage, first center is taken a percentage and is twisted into a branch, the second center is taken a percentage and is twisted into another branch, first center take a percentage with the second center is taken a percentage and is twisted 360 degrees. The utility model discloses the magnetism module is applicable to 2.5Gbps or 5Gbps and above ethernet to the wire winding is simple, and manufacturing cost is lower.

Description

Magnetic module and electric connector with same

[ technical field ] A method for producing a semiconductor device

The present invention relates to a magnetic module and an electrical connector having the same, and more particularly to a magnetic module and an electrical connector having the same suitable for ethernet.

[ background of the invention ]

With the prior art related to the present invention, please refer to chinese patent No. CN102832019a published on 12/19/2012, which discloses a transformer, comprising a magnetic core and first to eighth enameled wires wound around the magnetic core, wherein the eight enameled wires all have a first wire end and a second wire end extending out of the magnetic core. Because the number of enameled wires of the transformer is too large, the winding and the branching are complex, the manufacturing cost is high, and the transformer is not suitable for the Ethernet application of 2.5Gbps or 5Gbps or above.

Therefore, there is a need for an improved magnetic module to overcome the above-mentioned shortcomings in the prior art.

[ Utility model ] A method for manufacturing a semiconductor device

The utility model discloses a main aim at: a magnetic module suitable for use in 2.5Gbps or 5Gbps and above Ethernet networks is provided.

For solving the technical problem, the utility model discloses a following technical scheme: the utility model provides a magnetism module, its includes the magnetic core and twines a plurality of enameled wires on the magnetic core, the enameled wire twines form primary and secondary coil on the magnetic core, primary includes first enameled wire and second enameled wire, secondary coil includes third enameled wire and fourth enameled wire, first enameled wire with second enameled wire forms first center tap, third enameled wire with fourth enameled wire forms second center tap, first center tap twists into a bunch, second center tap twists into another bunch, first center tap with second center tap twists reverse the transposition 360 degrees.

Another main objective of the present invention is to: an electrical connector having the magnetic module is provided.

For solving the above technical problem, the utility model discloses following technical scheme also can be adopted: the utility model provides an electric connector, its includes the magnetism module, the magnetism module includes the magnetic core and twines a plurality of enameled wires on the magnetic core, the enameled wire twines form primary and secondary coil on the magnetic core, primary includes first enameled wire and second enameled wire, secondary includes third enameled wire and fourth enameled wire, first enameled wire with second enameled wire forms first center tap, third enameled wire with the fourth enameled wire forms second center tap, first center tap twists into a bunch, second center tap twists into another bunch, first center tap with second center tap twists reverse the transposition 360 degrees.

Compared with the prior art, the utility model discloses magnetism module and have electric connector of this magnetism module's advantage lies in: the first center tap is twisted with the second center tap by 360 degrees, it is suitable for 2.5Gbps or 5Gbps or more Ethernet network, and has simple manufacture and low cost.

[ description of the drawings ]

Fig. 1 is a schematic diagram of a magnetic module according to the present invention for a winding process.

Fig. 2 is a schematic diagram of the magnetic module shown in fig. 1 after winding, with the ends of the wires being scattered.

Fig. 3 is a schematic diagram of the magnetic module shown in fig. 2 after the primary coil and the secondary coil are separated.

Fig. 4 is a schematic diagram of the magnetic module winding shown in fig. 3 with the center taps formed in sequence.

FIG. 5 is a schematic diagram of the magnetic module of FIG. 4 after center tap crossing.

Fig. 6 is a schematic diagram of the magnetic module shown in fig. 5 after the center tap is twisted by 360 degrees.

Fig. 7 is a schematic diagram of the magnetic module shown in fig. 6 and a common mode choke coil connected thereto.

FIG. 8 is a schematic circuit diagram of the magnetic module shown in FIG. 7 and a common mode choke coil connected thereto

Fig. 9 is a perspective view of an electrical connector having the magnetic module of the present invention.

Fig. 10 is a schematic diagram of the magnetic module according to the present invention used in a PCB manufacturing process.

[ description of main reference symbols ]

Magnetic module 100 magnetic core 1

Primary coil 2 and secondary coil 3

First enameled wire 21 with central through hole 11

The second enameled wire 22 and the third enameled wire 33

Fourth enameled wire 34 litz wire 20

First center tap 101 second center tap 102

Common mode choke 200 of electrical connector 600

Common mode magnetic core 201 of insulating body 602

Outer casing 601

[ detailed description ] embodiments

Referring to fig. 1 to 10, a magnetic module 100 according to the present invention is shown. The magnetic module 100 is a transformer that can be used in filter circuits of 2.5Gbps or 5Gbps and above ethernet networks. The magnetic module 100 comprises a magnetic core 1 and a plurality of enameled wires wound on the magnetic core 1, wherein the enameled wires are wound on the magnetic core 1 to form a primary coil 2 and a secondary coil 3.

The magnetic core 1 is annular and is provided with a central through hole 11. The initial magnetic permeability of the magnetic core 1 is 3600 to 7000, and the ratio of the outer diameter D and the inner diameter D of the magnetic core 1 is not less than 1.7. The thickness T of the magnetic core 1 is not less than 1.52mm.

The primary coil 2 includes a first enameled wire 21 and a second enameled wire 22. The first and second enameled wires 21 and 22 form a primary input end and a primary output end of the primary coil 2, respectively, and a first center tap 101 is formed between the primary input end and the primary output end.

The secondary coil 3 includes a third enameled wire 33 and a fourth enameled wire 34. The third enameled wire 33 and the fourth enameled wire 34 respectively form a secondary input end and a secondary output end of the secondary coil 3, and a second center tap 102 is formed between the secondary input end and the secondary output end.

The diameter size range of each of the first enameled wire 21, the second enameled wire 22, the third enameled wire 33 and the fourth enameled wire 34 is between AWG (american wire gauge) 40 and AWG 35.

In production, different colors are commonly used to distinguish different groups. Each enameled wire is provided with a first wire end and a second wire end which extend out of the magnetic core 1. The utility model discloses in, first enameled wire 21 is with the gold, represents the first end of a thread of first enameled wire 21 with N, and N represents the second end of a thread of first enameled wire 21. The second enamel wire 22 is shown in blue, with B denoting a first stub of the second enamel wire 22, and B denoting a second stub of the second enamel wire 22. The third enamel wire 33 is colored red, and R represents a first end of the third enamel wire 33, and R represents a second end of the third enamel wire 33. The fourth enamel wire 34 is designated green, with G designating a first end of the fourth enamel wire 34, and G designating a second end of the fourth enamel wire 34. The parts of the first enameled wire 21, the second enameled wire 22, the third enameled wire 33 and the fourth enameled wire 34 wound on the magnetic core 1 are twisted together to form a bundle of twisted wires 20. The twisted wire 20 is wound around the magnetic core 1 in a direction penetrating the central through hole 11, and the end of each enameled wire is exposed. The litz wire 20 is wound on the magnetic core for 6 to 10 turns. The litz wire construction comprises a start winding end which initially enters the core and a finish winding end which leave a litz wire section S of 1mm to 2mm from the core inner diameter. The enameled wire enters and exits the magnetic core 1 and a stranded wire with a stranded pitch or 1 mm-2 mm is reserved so as to reduce leakage inductance, improve high-frequency performance and ensure the symmetry of the primary and secondary of the transformer so as to reduce leakage inductance and improve high-frequency performance. Specifically, the utility model discloses in, the winding end with the transposition part is all reserved to the knot tail end to satisfy 5Gbps and above ethernet's filter circuit's demand.

The color of the enamel wire is merely for convenience of distinction and other colors may be substituted. The first center tap 101 is twisted with the second center tap 102 by 360 degrees. Preferably, the first center tap 101 and the second center tap 102 are twisted by 360 degrees in the present invention. Specifically, in the present invention, the magnetic module 100 is only provided with four single-core enameled wires. The twisted wire sequence of the four enameled wires is as follows: a third enameled wire, a first enameled wire, a fourth enameled wire and a second enameled wire. The color arrangement is as follows: red, gold, green, blue.

The magnetic core 1 includes a first side of an initial winding and a second side of a final winding. During winding, in the first step, a stranded wire 20 is wound and pointed on the magnetic core 1, at the moment, a first wire head NGBR of the four enameled wires is positioned at a first side, and a second wire head NGBR of the four enameled wires is positioned at a second side; secondly, arranging a second stub n of the first enameled wire 21 and a second stub b of the second enameled wire 22 to a first side, and arranging a first stub G of the third enameled wire 33 and a first stub R of the fourth enameled wire 34 to a second side; thirdly, twisting a second terminal N of the first enameled wire 21 and a first terminal B of the second enameled wire 22 to form a first center tap 101, wherein the first terminal N of the first enameled wire 21 is used as a primary input end of a primary coil 2 of the transformer, the second terminal B of the second enameled wire 22 is used as a primary output end of the primary coil 2 of the transformer, a second terminal R of a third enameled wire 33 and a first terminal G of a fourth enameled wire 34 are twisted to form a second center tap 102, the first terminal R of the third enameled wire 33 is used as a secondary input end of a secondary coil 3 of the transformer, and the second terminal G of the fourth enameled wire 34 is used as a secondary output end of the secondary coil 3 of the transformer; fourthly, arranging the first center taps 101 to the second side and the second center taps 102 to the first side to complete the first 90-degree crossing of the center taps; fifthly, after the first center tap 101 and the second center tap 102 are twisted, the first center tap 101 extends to the first side, and the second center tap 102 extends to the second side, so that the 360-degree twisting of the center taps is completed.

In subsequent processes, the magnetic module 100 may be soldered to a PCB (not shown) or directly wound around a corresponding conductive terminal (not shown). The magnetic module 100 is used in a PCB welding process, the first center tap 101 extends to the first side and exceeds the outer edge of the magnetic core for a length L1 of at least 10mm, and then is twisted, and the twisted length L2 of the first center tap 101 is at least 5mm, so that the polarity can be distinguished. For the magnetic module 100 in the winding process, the first center tap 101 is directly twisted, and a length L1 is not required to be reserved in the process of manufacturing the magnetic module by welding like a PCB, so as to improve the high-frequency performance.

The magnetic module 100 further includes a common mode choke 200. The common mode choke 200 includes a common mode core 201. The third enameled wire 33 and the fourth enameled wire 34 are twisted together and wound on the common mode magnetic core 201. The first center tap 101 extends to a first side to be connected with an external component, and the second center tap 102 is grounded. The third enameled wire 33 and the fourth enameled wire 34 are wound on the common mode magnetic core 201 and extend outwards from the common mode magnetic core 201 by a length L3 of at least 10mm, so as to facilitate the back-end welding.

Fig. 6 shows an electrical connector 600 including the magnetic module 100 of the present invention, wherein the electrical connector 600 includes a housing 601, an insulating body 602 accommodated in the housing 601, and the magnetic module 100.

The utility model discloses in, the first center of magnetism module is taken a percentage 101 and is taken a percentage 102 transposition 360 degrees with the second center, can effectively improve high frequency characteristic to accord with 2.5Gbps or 5Gbps and above ethernet's filter circuit's requirement.

The above description is only a partial embodiment of the present invention, not all embodiments, and any equivalent changes that the technical solutions of the present invention take are covered by the claims of the present invention through reading the present invention.

Claims (10)

1. The utility model provides a magnetism module, its includes the magnetic core and twines a plurality of enameled wires on the magnetic core, the enameled wire twines form primary and secondary coil on the magnetic core, primary includes first enameled wire and the second enameled wire, secondary coil includes third enameled wire and the fourth enameled wire, first enameled wire with the second enameled wire forms first center tap, third enameled wire with the fourth enameled wire forms second center tap, first center tap twists into a bundle, second center tap twists into another bundle, its characterized in that: the first center tap is twisted with the second center tap by 360 degrees.

2. The magnetic module of claim 1, wherein: the magnetic module is only provided with four enameled wires with single core.

3. The magnetic module of claim 2, wherein: the first enameled wire, the second enameled wire, the third enameled wire and the fourth enameled wire are wound on the part of the magnetic core to form a stranded wire structure which is jointly stranded into a bundle, the first enameled wire and the second enameled wire respectively form a primary input end and a primary output end of a primary coil, the third enameled wire and the fourth enameled wire respectively form a secondary input end and a secondary output end of a secondary coil, and the stranded sequence of the four enameled wires is as follows: a third enameled wire, a first enameled wire, a fourth enameled wire and a second enameled wire.

4. The magnetic module of claim 3, wherein: the magnetic core is annular and provided with a central through hole, and each enameled wire is wound on the magnetic core in a direction penetrating through the central through hole.

5. The magnetic module of claim 1, wherein: the diameter of each enameled wire ranges from AWG40 to AWG 35.

6. The magnetic module of claim 4, wherein: the initial permeability of the magnetic core is 3600 to 7000, the ratio of the outer diameter to the inner diameter of the magnetic core is not less than 1.7, and the thickness of the magnetic core is not less than 1.52mm.

7. The magnetic module of claim 6, wherein: the number of winding turns of the enameled wire on the magnetic core is 6-10.

8. The magnetic module of claim 3, wherein: the first center tap is stranded after extending out of the outer edge of the magnetic core by at least 10mm, and the stranded length of the first center tap is at least 5mm.

9. The magnetic module of claim 3, wherein: the enameled wire comprises a winding end initially entering a magnetic core and a tail end ending winding, wherein at least one of the winding end and the tail end is away from the inner diameter of the magnetic core by a twisting pitch or a twisting part of 1mm to 2mm, so that leakage inductance is reduced, and high-frequency performance is improved.

10. The utility model provides an electric connector, its includes magnetism module, magnetism module includes the magnetic core and twines a plurality of enameled wires on the magnetic core, the enameled wire twines form primary and secondary coil on the magnetic core, primary includes first enameled wire and the second enameled wire, secondary coil includes third enameled wire and fourth enameled wire, first enameled wire with the second enameled wire forms first center and takes a percentage, third enameled wire with the fourth enameled wire forms second center and takes a percentage, first center takes a percentage and twists into a bunch, the second center takes a percentage and twists into another bunch, its characterized in that: the first center tap is twisted 360 degrees with the second center tap.

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