TWM654105U - Anti-interference network transformer module - Google Patents

Abstract

This invention discloses an anti-interference network transformer module, including a substrate, a plurality of surface mount transformers, and a surface mount surge protection device set. The substrate has a plurality of first electrical connection areas and a plurality of second electrical connection areas; the surface mount transformers are electrically arranged in the first electrical connection areas, each of the surface mount transformers has a primary side, and the primary side has a primary side central tap port. The surface mount surge protection device set has a plurality of first surface mount surge protection devices, which are electrically arranged in each of the second electrical connection areas so that each of the surface mount surge protection devices is connected to the primary side central tap port. When the voltage of the primary side central tap port is higher than the first voltage rating, the impedance is reduced from high to low.

Description

Anti-interference network transformer module

This invention relates to an anti-interference network transformer module, and more particularly to an integrated surface mount transformer and surface mount surge protection component set.

Traditional packaged chips usually have an isolation transformer and multiple protection components electrically arranged on a circuit substrate, wherein the coil of the isolation transformer is usually made by hand winding, and after the isolation transformer and the protection components are arranged on the circuit substrate, the components are also manually pulled to electrically connect the components to each other. The disadvantage of using the above method to manufacture traditional packaged chips is that it is a semi-automatic method for production, and the defective rate of the product is difficult to reduce. In addition, the components are scattered on the substrate without integration, which causes interference problems during operation. Even if there is a seasonal labor shortage, the increase in labor costs will correspond to a significant increase in the production cost of the product.

The main purpose of this invention is to provide an anti-interference network transformer module, including a substrate, a plurality of surface mount transformers and a surface mount surge protection component set. The substrate has a plurality of first electrical connection areas, a plurality of second electrical connection areas, and a grounding line; the surface mount transformers are electrically disposed in the first electrical connection areas, each of the surface mount transformers has a primary side, and the primary side has a primary side central tap port; the surface mount surge protection element group has a plurality of first surface mount surge protection elements, which are electrically disposed in the second electrical connection areas, so that each of the first surface mount surge protection elements is connected between the primary side central tap port and the grounding line, and the primary side central tap port is reduced from high impedance to low impedance when the voltage is higher than the first voltage rating.

Furthermore, each of the surface mount transformers has a secondary side opposite to the primary side, each of the first electrical connection areas has a plurality of first electrical contacts, each of the surface mount transformers further has a base, a pair of coils and a plurality of first pads, the coils constitute the primary side and the secondary side, the coils are wound around the base and the terminals of the primary side and the secondary side are electrically connected to each of the first pads, and each of the first pads is electrically connected to each of the first electrical contacts.

Furthermore, the second electrical connection areas have a plurality of third electrical contacts, each of the second surface mount surge protection components has a second surge protection package unit and two third solder pads, the third solder pads are respectively fixed at two ends of the second surge protection package unit and electrically connected to the second surge protection package unit, and each of the third solder pads is electrically connected to each of the third electrical contacts.

Furthermore, the secondary side has a secondary side output port, and the surface mount surge protection device set has a plurality of second surface mount surge protection devices, which are electrically arranged in each of the second electrical connection areas so that the second surface mount surge protection devices are connected to the secondary side output port, and when the voltage of the secondary side output port is higher than a second voltage rating, the impedance is reduced from high to low.

Furthermore, each of the second surface mount surge protection components has a second surge protection package unit and two third solder pads. The third solder pads are respectively fixed at two ends of the second surge protection package unit and electrically connected to the second surge protection package unit. Each of the third solder pads is electrically connected to each of the second electrical contacts.

Furthermore, the substrate has a plurality of connection pins electrically connected to the primary-side input port and the secondary-side output port respectively.

Furthermore, the substrate includes at least two ground pins respectively electrically connected to the ground line.

Furthermore, each of the first surface mount surge protection components is a varistor or a gas discharge tube, and each of the second surface mount surge protection components is a transient voltage suppressor.

Furthermore, the first electrical connection areas and the second electrical connection areas are respectively formed on the same side support surface of the substrate.

Furthermore, the substrate has two opposite supporting surfaces, and the first electrical connection areas and the second electrical connection areas are respectively formed on the supporting surfaces.

Therefore, this invention has the following advantages over the conventional technology: By replacing the transformer and surge protection components with surface mount components (SMD components), the anti-interference network transformer module of this invention can be changed to a fully automated and modular design, which not only reduces the manpower requirements on the production line, but also effectively reduces the defective rate of products, stabilizes the component characteristics, and flexibly adjusts the layout of each component on the substrate, effectively utilizing the use area on the substrate and correspondingly reducing the overall area of the substrate. The anti-interference network transformer module of this invention can also have better lightning resistance and suppress electromagnetic interference.

10: Anti-interference network transformer module

20: Anti-interference network transformer module

1: Substrate

11: Loading surface/first loading surface

12: Second bearing surface

13: The first electrical connection area

13a: First electrical contact

14: Second electrical connection area

14a: Second electrical contact

14b: The third electrical contact

15: Grounding line

16: Connection pins

17: Ground pin

2: Surface mount transformer

21: Base

21a: Bottom

22: Coil

221: Beginner side

221a: Primary side input port

221b: Primary side center tap port

222: Secondary side

222a: Secondary side output port

23: First welding pad

3: Surface mount surge protection component set

31: The first surface mount surge protection device

31a: First surge protection packaging unit

31b: Second welding pad

32: Second surface mount surge protection device

32a: Second surge protection packaging unit

32b: Third welding pad

100: Network switch

30: Signal input slot

40: Internal signal processing unit

Figure 1 is a schematic diagram of the usage status of the first embodiment of the anti-interference network transformer module of this invention.

Figure 2 is a schematic diagram of a first embodiment of the anti-interference network transformer module of the present invention.

Figure 3 is a three-dimensional schematic diagram of a surface mount transformer of the first embodiment of the anti-interference network transformer module of this invention.

Figure 4 is a circuit diagram of the first embodiment of the anti-interference network transformer module of this invention.

Figure 5 is a side view schematic diagram of the second embodiment of the anti-interference network transformer module of the present invention.

The detailed description and technical content of this work are explained below with the help of diagrams. In addition, the diagrams in this work are not necessarily drawn in accordance with the actual proportions for the convenience of explanation. These diagrams and their proportions are not intended to limit the scope of this work, and this is explained in advance.

The first embodiment of the present invention is an anti-interference network transformer module 10. FIG1 is a schematic diagram of the use status of the anti-interference network transformer module 10 of the first embodiment of the present invention, which can be installed on a network switch 100. The network switch 100 at least includes a signal input slot 30 and an internal signal processing unit 40. The anti-interference network transformer module 10 of the present embodiment is arranged at the rear end of the signal input slot 30 to receive and send digital signals through the signal input slot 30, thereby achieving the effect of preventing surges from burning the internal circuits. The anti-interference network transformer module 10 of the first embodiment of the present invention will be described in detail below.

Please refer to "Figure 1" and "Figure 2". Figure 2 is a schematic diagram of the decomposition of the anti-interference network transformer module of the first embodiment of this invention. The anti-interference network transformer module 10 of this embodiment includes a substrate 1, a plurality of surface mount transformers 2 and a surface mount surge protection component set 3. The surface mount transformers 2 and the surface mount surge protection component set 3 are electrically arranged on the substrate 1. The detailed structure of each component and the connection relationship between them will be described in detail in the following paragraphs.

In the first embodiment of the present invention, the substrate 1 has a supporting surface 11, a plurality of first electrical connection areas 13, a plurality of second electrical connection areas 14, a grounding circuit 15, a plurality of connecting pins 16 and two grounding pins 17. The first electrical connection areas 13 are formed on the carrier surface 11, and each of the first electrical connection areas 13 has a plurality of first electrical contacts 13a. The second electrical connection areas 14 are formed on the carrier surface 11 and are adjacent to the first electrical connection areas 13, and the second electrical connection areas 14 have a plurality of second electrical contacts 14a and a plurality of third electrical contacts 14b adjacent to each other. The grounding pins 17 are respectively connected to the grounding line 15; wherein, in this embodiment, each first electrical connection area 13 has six first electrical contacts 13a, and each second electrical connection area 14 has two second electrical contacts 14a or two third electrical contacts 14b. However, in other embodiments of the present invention, the number of first electrical contacts 13a, second electrical contacts 14a or third electrical contacts 14b is not limited, and the number can be adjusted according to demand.

As shown in FIG. 3 , a three-dimensional schematic diagram of a surface mount transformer 2 is shown. Each surface mount transformer 2 has a base 21, a pair of coils 22, and a plurality of first pads 23. The coil 22 forms a primary side 221 and a secondary side 222. The coil 22 is wound around the base 21 by a machine so that a terminal of the primary side 221 and a terminal of the secondary side 222 are electrically connected to each first pad 23. In this embodiment, the number of the first pads 23 is six and they are formed on a bottom surface 21a of the base 21. Thus, referring to FIG. 2 , the surface mount transformer 2 of the present invention can be quickly manufactured by a fully automated machine, and since the first solder pads 23 are neatly arranged on the bottom surface 21a, the machine can quickly align each surface mount transformer 2 with each first electrical connection area 13, so that every six first solder pads 23 are electrically connected to every six first electrical contacts 13a, thereby accelerating the speed of configuring the components on the substrate 1, and enabling the surface mount transformers 2 to be neatly arranged on the substrate 1, effectively utilizing the use area of the carrier surface 11, and at the same time ensuring a good electrical connection relationship.

FIG4 is a circuit diagram of the anti-interference network transformer module 10 of the present embodiment, and please refer to FIG1 and FIG2 simultaneously. The surface mount transformers 2 can be used in conjunction with a signal transceiver (not shown), wherein each set of the signal transceiver includes a data transmission line and a data receiving line, and the data transmission line and the data receiving line are respectively matched with each surface mount transformer 2. Taking the data receiving line as an example, each surface mount transformer 2 has a primary side 221 and a secondary side 222 coupled to the primary side 221. The primary side 221 has a primary side input port 221a electrically connected to the signal input slot 30 and a primary side center tap port 221b for capturing a DC signal from the primary side input port 221a. The secondary side 222 has a secondary side output port 222a for transmitting the signal of the primary side input port 221a to the internal signal processing unit 40, and the connection pins 16 of the aforementioned substrate 1 are electrically connected to the primary side input port 221a and the secondary side output port 222a respectively.

Referring to FIG. 2 , the surface mount type surge protection device set 3 has a plurality of first surface mount type surge protection devices 31 and a plurality of second surface mount type surge protection devices 32. Each first surface mount type surge protection device 31 has a first surge protection package unit 31a and two second solder pads 31b, and the second solder pads 31b are respectively fixed at two ends of the first surge protection package unit 31a and electrically connected to the first surge protection package unit 31a. Each second surface mount type surge protection device 32 has a second surge protection package unit 32a and two third solder pads 32b, and the third solder pads 32b are respectively fixed at two ends of the second surge protection package unit 32a and electrically connected to the second surge protection package unit 32a. Thus, the structure of the first surface mount type surge protection element 31 can be simply classified into the first surge protection package unit 31a and the two second pads 31b, and the structure of the second surface mount type surge protection element 32 can be simply classified into the second surge protection package unit 32a and the second/third pads 32b, so that the assembly is simpler and faster after the structure is classified, and the positions of the second pads 31b and the third pads 32b are fixed, and the machine can quickly assemble each first surface mount type surge protection element. The second surface mount surge protection device 31 and the second surface mount surge protection device 32 are aligned with each second electrical connection area 14, so that each second solder pad 31b is electrically connected to each second electrical contact 14a, and each second third solder pad 32b is electrically connected to each second third contact, thereby accelerating the speed of configuring the device on the substrate 1, and enabling the surface mount surge protection device set 3 to be neatly arranged on the substrate 1, so that the use area of the carrier surface 11 can be effectively utilized, while ensuring a good electrical connection relationship.

Each first surface mount surge protection element 31 is electrically connected to the secondary side output port 222a through the second contacts, and each second surface mount surge protection element 32 is electrically connected to the primary side center tap port 221b through the third contact. The first surface mount surge protection element 31 is disposed on the primary side 221 (high voltage side) and can be a varistor or gas discharge tube with a higher surge voltage tolerance. The second surface mount surge protection element 32 is disposed on the secondary side 222 and can be a transient voltage suppressor with a faster response speed to protect the internal components of the network switch 100. In the circuit operation mode of the present embodiment, when a lightning surge falls on an external cable (not shown) and is transmitted to the signal input slot 30, and the voltage at the primary side central tap port 221b is higher than the first voltage rating, the first surface mount surge protection element 31 on the primary side 221 will generate a breakdown arc due to the high voltage of the surge, so that the impedance of the first surface mount surge protection element 31 is much smaller than the impedance of the primary side 221. At this time, most of the surge energy will be guided to the ground line 15 through the first surface mount surge protection element 31 and the energy will be released outward. At the same time, in order to prevent the first surface mount surge protection device 31 from failing to release the high voltage surge caused by lightning in time, thereby causing the circuit at the rear end of the secondary side 222 to burn out, when the voltage of the secondary side output port 222a is higher than the second voltage rating, the second surface mount surge protection device 32 connected to the secondary side output port 222a breaks down due to the surge high voltage to form a reverse collapse current. At this time, the impedance of the second surface mount surge protection device 32 is much smaller than the impedance of the internal circuit of the network switch 100, so that the second surface mount surge protection device 32 and the secondary side 222 form a closed loop, thereby preventing the lightning surge from flowing into the internal circuit of the network switch 100. The first voltage rating and the second voltage rating of this invention are set in accordance with the safety standards established by the industry and are not intended to limit the scope of this case.

Referring to FIG. 1 and FIG. 4 , the grounding line 15 is electrically connected to one end of the first surface mount surge protection element 31. When the surge voltage enters from the signal input slot 30, the first surface mount surge protection element 31 is in a short circuit state. At this time, the energy can be guided to the grounding line 15 through the first surface mount surge protection element 31 to obtain energy release. It should be noted that the direction in which the grounding line 15 extends is a preferred embodiment of the invention and does not limit the scope of the invention. In other words, the pin configuration can have different configurations according to the manufacturing requirements and is not used to limit the invention. This is explained here first.

Please refer to FIG. 5, which is a side view schematic diagram of the anti-interference network transformer module 20 of the second embodiment of the present invention. The difference between the present embodiment and the first embodiment is that the substrate 1 of the present embodiment has a first bearing surface 11 and a second bearing surface 12 opposite to each other, a plurality of first electrical connection areas 13 are formed on the first bearing surface 11, and a plurality of second electrical connection areas 14 are formed on the second bearing surface 12. The plurality of surface mount transformers 2 of the anti-interference network transformer module 20 of the present embodiment electrically set the first electrical connection areas 13, so that the plurality of first electrical contacts 13a of the first electrical connection areas 13 are electrically connected to the plurality of first solder pads 23 of the surface mount transformer 2. The surface mount surge protection device set 3 is electrically arranged on the second electrical connection area 14 on the second carrier surface 12, so that the multiple second solder pads 31b of the first surface mount surge protection device 31 are electrically connected to the multiple second electrical contacts 14a of the second electrical connection area 14, and the multiple third solder pads 32b of the second surface mount surge protection device 32 are electrically connected to the multiple third electrical contacts 14b of the second electrical connection area 14. The advantage of the configuration method of this embodiment is that the surface mount transformer 2 can be prevented from contacting the surface mount surge protection device set 3 or its circuit, so as to stabilize the signal, reduce electromagnetic interference EMI, and increase the safety of the circuit.

In summary, compared with the prior art, this invention has the following advantages: By changing the transformer and surge protection components to surface mount components (SMD components), the anti-interference network transformer module of this invention can be changed to a fully automated and modular design, which not only reduces the manpower requirements on the production line, but also effectively reduces the defective rate of products, stabilizes the component characteristics, and flexibly adjusts the layout of each component on the substrate, effectively utilizing the use area on the substrate and correspondingly reducing the overall area of the substrate. The anti-interference network transformer module of this invention can also have better lightning resistance and suppress electromagnetic interference.

The above has been a detailed description of this creation, but what is described above is only a preferred embodiment of this creation, and it should not be used to limit the scope of implementation of this creation. That is, all equal changes and modifications made according to the scope of patent application of this creation should still fall within the scope of patent coverage of this creation.

1: Substrate

11: Loading surface/first loading surface

13: The first electrical connection area

13a: First electrical contact

14: Second electrical connection area

14a: Second electrical contact

14b: The third electrical contact

15: Grounding line

16: Connection pins

17: Ground pin

2: Surface mount transformer

3: Surface mount surge protection component set

31: The first surface mount surge protection device

31a: First surge protection packaging unit

31b: Second welding pad

32: Second surface mount surge protection device

32a: Second surge protection packaging unit

32b: Third welding pad

Claims (10)

An anti-interference network transformer module includes: a substrate having a plurality of first electrical connection areas and a plurality of second electrical connection areas and a grounding line; a plurality of surface mount transformers electrically disposed in the first electrical connection areas, each of the surface mount transformers having a primary side, and the primary side having a primary side central tap port; and a surface mount surge protection element set having a plurality of first surface mount surge protection elements electrically disposed in the second electrical connection areas so that each of the first surface mount surge protection elements is connected between the primary side central tap port and the grounding line, and the primary side central tap port is reduced from high impedance to low impedance when the voltage is higher than the first voltage rating. The anti-interference network transformer module as described in claim 1, wherein each surface mount transformer has a secondary side opposite to the primary side, each first electrical connection area has a plurality of first electrical contacts, each surface mount transformer further has a base, a pair of coils and a plurality of first pads, the coils constitute the primary side and the secondary side, the coils are wound around the base and the terminals of the primary side and the secondary side are electrically connected to each first pad, and each first pad is electrically connected to each first electrical contact. The anti-interference network transformer module as described in claim 2, wherein each second electrical connection area has a plurality of second electrical contacts, each first surface mount surge protection element has a first surge protection package unit and two second solder pads, the second solder pads are respectively fixed at two ends of the first surge protection package unit and electrically connected to the first surge protection package unit, and each second solder pad is electrically connected to each second electrical contact. The anti-interference network transformer module as described in claim 3, wherein the secondary side has a secondary side output port, the surface mount surge protection device group has a plurality of second surface mount surge protection devices, which are electrically arranged in each of the second electrical connection areas so that each of the second surface mount surge protection devices is connected to the secondary side output port, and when the voltage of the secondary side output port is higher than a second voltage rating, the impedance is reduced from high to low. The anti-interference network transformer module as described in claim 4, wherein the second electrical connection areas have a plurality of third electrical contacts adjacent to the second electrical contacts, each of the second surface mount surge protection components has a second surge protection package unit and two third solder pads, the third solder pads are respectively fixed at two ends of the second surge protection package unit and electrically connected to the second surge protection package unit, and each of the third solder pads is electrically connected to each of the third electrical contacts. The anti-interference network transformer module as described in claim 5, wherein the substrate has a plurality of connection pins electrically connected to a primary-side input port and a secondary-side output port of the primary side, respectively. The anti-interference network transformer module as described in claim 6, wherein the substrate includes at least two ground pins electrically connected to the ground line. The anti-interference network transformer module as described in claim 7, wherein each of the first surface-mounted surge protection elements is a varistor or a gas discharge tube, and each of the second surface-mounted surge protection elements is a transient voltage suppressor. As described in claim 8, the anti-interference network transformer module, wherein the first electrical connection areas and the second electrical connection areas are respectively formed on the same side support surface of the substrate. As described in claim 8, the anti-interference network transformer module, wherein the substrate has two opposite supporting surfaces, and the first electrical connection areas and the second electrical connection areas are respectively formed on the supporting surfaces.

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