CN220527691U - Electrostatic protection network port and circuit board - Google Patents
Electrostatic protection network port and circuit board Download PDFInfo
- Publication number
- CN220527691U CN220527691U CN202322113285.7U CN202322113285U CN220527691U CN 220527691 U CN220527691 U CN 220527691U CN 202322113285 U CN202322113285 U CN 202322113285U CN 220527691 U CN220527691 U CN 220527691U
- Authority
- CN
- China
- Prior art keywords
- module
- network
- surge
- electrostatic protection
- electrostatic
- 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.)
- Active
Links
- 238000002955 isolation Methods 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims abstract description 14
- 230000003068 static effect Effects 0.000 claims abstract description 11
- 230000009466 transformation Effects 0.000 claims abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Abstract
The application discloses static protection network port and circuit board, static protection network port includes: a network line module; the chip module is connected with the network line module and is used for receiving the network signals transmitted by the network line module; the anti-surge module is arranged between the network line module and the chip module and is used for carrying out surge protection on the network signal; the network isolation module is respectively connected with the anti-surge module and the chip module and is used for carrying out isolation transmission and transformation treatment on the network signals subjected to surge protection; and the static protection module is connected with the anti-surge module and is used for carrying out static protection on the network signal. The circuit design is reasonable, the existing circuit design is not changed on the basis of maintaining the advantages of the original circuit design, and a quick releasing mechanism for electrostatic charges is directly added between the resistor and the capacitor of the original anti-surge module, so that the electrostatic protection level of the anti-surge module is improved.
Description
Technical Field
The present disclosure relates to electronic circuits, and particularly to an electrostatic protection network port and a circuit board.
Background
The network interface circuit in the existing product comprises an anti-surge module which is designed mainly for impedance matching, solving the problem of surge interference and suppressing common mode noise. However, most of the existing products have strict regulations on electrostatic interference of meshes, one of the strict regulations is that eight signal lines of four groups of transmission channels need to have electrostatic tolerance levels of 1KV, 2KV, 3KV and even higher KV, but after practical verification, an anti-surge module (Bob-Smith line) is found to have a lower electrostatic interference protection level. To solve this problem of electrostatic interference, a TVS (a device formed by integrating a single PN junction or multiple PN junctions using a semiconductor process) is often added to the secondary side to raise the electrostatic protection level of the bob-smith line, but this increases the use cost.
Disclosure of Invention
An objective of the embodiments of the present application is to provide an electrostatic protection network port and a circuit board, which are used for solving the problem of high use cost caused by improving the electrostatic protection capability of the network port.
An object of an embodiment of the present application is to provide an electrostatic protection network port, including:
a network line module;
the chip module is connected with the network line module and is used for receiving the network signals transmitted by the network line module;
the anti-surge module is arranged between the network line module and the chip module and is used for carrying out surge protection on the network signal;
the network isolation module is respectively connected with the anti-surge module and the chip module and is used for carrying out isolation transmission and transformation treatment on the network signals subjected to surge protection;
and the static protection module is connected with the anti-surge module and is used for carrying out static protection on the network signal.
As an alternative embodiment, the anti-surge module includes:
a resistor connected to the network isolation module;
one end of the capacitor is connected with the resistor, and the other end of the capacitor is connected with the first grounding end.
As an alternative embodiment, the electrostatic protection module includes:
and one end of the lead is connected between the resistor and the capacitor, and the other end of the lead is close to the second grounding end to form an electrostatic discharge area for directly discharging electrostatic current to the second grounding end.
As an alternative embodiment, the gap between the wire and the second ground is set to 10 mils.
As an alternative embodiment, an end of the wire close to the second grounding end is a conductive end, and the conductive end is an open bare copper area.
As an alternative embodiment, the network line module is connected to the first ground terminal.
As an alternative embodiment, the network isolation module is an isolation transformer for separating the transmission channel between the network line module and the chip module into a primary side transmission channel and a secondary side transmission channel.
As an alternative embodiment, the network cable module employs an RJ45 network interface.
As an alternative embodiment, the capacitance is a 1000PF capacitance and the resistance is a 75ohm resistance.
It is also an aim of embodiments of the present application to provide a circuit board comprising an electrostatic protection network port as described above.
The beneficial effects of this application embodiment lie in:
the circuit design is reasonable, the existing circuit design is not changed on the basis of maintaining the original circuit design advantage, and a quick releasing mechanism for electrostatic charges is directly added between the resistor and the capacitor of the original anti-surge module, so that the electrostatic protection level of the anti-surge module is improved, and the electrostatic protection level of a network interface product is further improved.
Drawings
FIG. 1 is a block diagram of an embodiment of the present application;
fig. 2 is a circuit diagram of an embodiment of the present application.
Reference numerals:
10. a network line module; 20. a chip module; 30. an anti-surge module; 40. a network isolation module; 50. and an electrostatic protection module.
Detailed Description
Various aspects and features of the present application are described herein with reference to the accompanying drawings.
It should be understood that various modifications may be made to the embodiments of the application herein. Therefore, the above description should not be taken as limiting, but merely as exemplification of the embodiments. Other modifications within the scope and spirit of this application will occur to those skilled in the art.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and, together with a general description of the application given above and the detailed description of the embodiments given below, serve to explain the principles of the application.
These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the accompanying drawings.
It is also to be understood that, although the present application has been described with reference to some specific examples, those skilled in the art can certainly realize many other equivalent forms of the present application.
The foregoing and other aspects, features, and advantages of the present application will become more apparent in light of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present application will be described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the application, which can be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the application with unnecessary or excessive detail. Therefore, specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present application in virtually any appropriately detailed structure.
The specification may use the word "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments as per the application.
The network interface circuit in the current product comprises a network line side, a chip side and four groups of transmission channels which are positioned between the network line side and the chip side and are responsible for transmitting data, wherein an isolation transformer is added into each group of transmission channels, and each group of transmission channels is divided into a primary side transmission channel from the isolation transformer to a network line connection port and a secondary side transmission channel from the isolation transformer to the chip by the isolation transformer.
In addition, the isolation transformer has center taps on two sides, wherein the center taps on the primary side end are connected in parallel through four resistors 75 ohms and then commonly connected in series with a high-voltage capacitor 1000p to be finally connected to the ground, and the four resistors 75 ohms are connected in parallel and then commonly connected in series with a high-voltage capacitor 1000p to be finally connected to the ground to form a named bob-smith line. But bob-smith lines have a low level of electrostatic interference protection.
In view of the above problems, an object of an embodiment of the present application is to provide an electrostatic protection network port, as shown in fig. 1 and 2, including a network line module 10, a chip module 20, an anti-surge module 30, a network isolation module 40, and an electrostatic protection module 50.
The chip module 20 is connected to the network line module 10, and is configured to receive a network signal transmitted by the network line module 10. The anti-surge module 30 is disposed between the network line module 10 and the chip module 20, and is used for performing surge protection on the network signal. The network isolation module 40 is connected to the anti-surge module 30 and the chip module 20, and performs isolation transmission and transformation processing on the network signal after surge protection. The electrostatic protection module 50 is connected to the anti-surge module 30, and performs electrostatic protection on the network signal.
As an alternative embodiment, the anti-surge module 30 includes a resistor and a capacitor. The resistor is connected to the network isolation module 40. One end of the capacitor is connected with the resistor, and the other end of the capacitor is connected with the first grounding end. Wherein the capacitance is a 1000PF capacitance and the resistance is a 75ohm resistance.
As an alternative embodiment, the electrostatic protection module 50 includes a wire, one end of the wire is connected between the resistor and the capacitor, and the other end of the wire is close to the second ground to form an electrostatic discharge area for directly discharging the electrostatic current to the second ground. The gap between the lead and the second grounding end is set to be 10mil, so that a parasitic capacitance is formed, and electrostatic current can be rapidly released to an electrostatic discharge area by means of the parasitic capacitance. One end of the wire, which is close to the second grounding end, is a conducting end, and the conducting end is an open bare copper area.
As an alternative embodiment, the network line module 10 is connected to the first ground terminal. Wherein, the network line module 10 adopts an RJ45 network interface.
As an alternative embodiment, the network isolation module 40 is an isolation transformer for separating the transmission channel between the network line module 10 and the chip module 20 into a primary side transmission channel and a secondary side transmission channel.
When static electricity is disturbed from the network interface, electric energy is released through the anti-surge module 30, the electric energy is released from the static electricity discharge area through the lead, and static electricity does not attack the signal line due to low-impedance flow, so that the chip module 20 is protected from electric energy impact. Therefore, the utility model has better network port electrostatic protection performance.
It is also an aim of embodiments of the present application to provide a circuit board comprising an electrostatic protection network port as described above.
The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application, the scope of which is defined by the claims. Various modifications and equivalent arrangements may be made to the present application by those skilled in the art, which modifications and equivalents are also considered to be within the scope of the present application.
Claims (10)
1. An electrostatic protection network port, comprising:
a network line module;
the chip module is connected with the network line module and is used for receiving the network signals transmitted by the network line module;
the anti-surge module is arranged between the network line module and the chip module and is used for carrying out surge protection on the network signal;
the network isolation module is respectively connected with the anti-surge module and the chip module and is used for carrying out isolation transmission and transformation treatment on the network signals subjected to surge protection;
and the static protection module is connected with the anti-surge module and is used for carrying out static protection on the network signal.
2. The electrostatic protection network port according to claim 1, wherein the anti-surge module comprises:
a resistor connected to the network isolation module;
one end of the capacitor is connected with the resistor, and the other end of the capacitor is connected with the first grounding end.
3. The electrostatic protection network port according to claim 2, wherein the electrostatic protection module comprises:
and one end of the lead is connected between the resistor and the capacitor, and the other end of the lead is close to the second grounding end to form an electrostatic discharge area for directly discharging electrostatic current to the second grounding end.
4. The electrostatic protection network port according to claim 3, wherein a gap between the wire and the second ground is set to 10 mils.
5. The electrostatic protection network port according to claim 4, wherein an end of the wire near the second ground terminal is a conductive terminal, and the conductive terminal is an open bare copper area.
6. The electrostatic protection network port according to claim 2, wherein the network wire module is connected to the first ground.
7. The electrostatic protection network port according to claim 1, wherein the network isolation module is an isolation transformer for separating a transmission channel between the network line module and the chip module into a primary side transmission channel and a secondary side transmission channel.
8. The electrostatic protection network port according to claim 1, wherein the network cable module employs an RJ45 network interface.
9. The electrostatic protection network port according to claim 2, wherein the capacitance is a 1000PF capacitance and the resistance is a 75ohm resistance.
10. A circuit board comprising an electrostatic protection network port according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322113285.7U CN220527691U (en) | 2023-08-04 | 2023-08-04 | Electrostatic protection network port and circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322113285.7U CN220527691U (en) | 2023-08-04 | 2023-08-04 | Electrostatic protection network port and circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220527691U true CN220527691U (en) | 2024-02-23 |
Family
ID=89938973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322113285.7U Active CN220527691U (en) | 2023-08-04 | 2023-08-04 | Electrostatic protection network port and circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220527691U (en) |
-
2023
- 2023-08-04 CN CN202322113285.7U patent/CN220527691U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8077441B2 (en) | Interface circuit and communication device | |
| CN102027651B (en) | DC and RF pass broadband surge suppressor | |
| US6018452A (en) | Residential protection service center | |
| KR100870874B1 (en) | Connection apparatus and high voltage impulse protection methods thereof | |
| US20040257743A1 (en) | LAN magnetic interface circuit with passive ESD protection | |
| CN114915507B (en) | Gigabit POE power supply communication circuit | |
| EP2003752B1 (en) | Circuit for preventing surge, connector and electronic apparatus thereof | |
| US20060181833A1 (en) | Surge protection circuit | |
| US20060121801A1 (en) | High speed wired media connector with symmetric PCB interface | |
| WO2020057190A1 (en) | Digital television receiver and radio frequency signal processing device thereof | |
| CN220527691U (en) | Electrostatic protection network port and circuit board | |
| CN103199818A (en) | Filter circuit and electric connector with filter circuit | |
| US20120176717A1 (en) | Category 6a surge protector | |
| US9570904B2 (en) | Transmission bandwidth extender/category 6 surge protector | |
| CN108632691A (en) | A kind of antistatic microphone | |
| CN215817913U (en) | Ground insulation filter circuit and communication power supply | |
| CN212849857U (en) | High-speed PoC port surge protection device and PoC camera | |
| TWI499143B (en) | Surge protection circuit applied in connector | |
| CN219477849U (en) | Separated network transformer circuit and network interface circuit | |
| KR102311307B1 (en) | Emp protective device for rf antenna | |
| CN206807635U (en) | Television set | |
| CN107834492B (en) | Lightning protection device | |
| CN114597880A (en) | Net mouth lightning protection system of floating equipment | |
| US20140022682A1 (en) | Packaged chip integrated with a signal isolation transformer and a protective component | |
| CN207869121U (en) | improved network signal processing circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |