CN203596614U - Lightning protection circuit for PSE (Power Source Equipment) multiport equipment - Google Patents
Lightning protection circuit for PSE (Power Source Equipment) multiport equipment Download PDFInfo
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- CN203596614U CN203596614U CN201320708395.1U CN201320708395U CN203596614U CN 203596614 U CN203596614 U CN 203596614U CN 201320708395 U CN201320708395 U CN 201320708395U CN 203596614 U CN203596614 U CN 203596614U
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- 238000010586 diagram Methods 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 7
- 239000004744 fabric Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
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- 239000003381 stabilizer Substances 0.000 description 1
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Abstract
The utility model provides a lightning protection circuit for PSE (Power Source Equipment) multiport equipment. The circuit comprises a second discharge protector RV2, a third discharge protector RV3 and a diode D3. The second discharge protector RV2 is interposed between the anode of a POE (Power over Ethernet) power supply and a protection ground. The third discharge protector RV3 is interposed between the cathode of a direct-current power supply and the protection ground. The diode D3 is connected between the anode of the POE power supply and the cathode of the POE power supply, and the anode of the diode D3 is connected to the cathode of the POE power supply. The lightning protection circuit provided by the utility model is simple in structure, meets the requirements on the lightning protection of the products, optimizes the design of the lightening production device in the lightening current path, reduces the number of the lightening production devices, optimizes the layout, simply improves the lightening protection grade, and saves the cost of the product.
Description
Technical field
The utility model relates to local area network (LAN) electric power system security fields, particularly a kind of lightning Protection circuit of PSE multi bri device.
Background technology
POE is also referred to as the electric power system (POE based on local area network (LAN), Power over Ethernet), sometimes be also called Power over Ethernet for short, this is when utilizing existing standard ethernet transmission cable, to transmit the newest standards standard of data and electrical power, and has kept and existing Ethernet system and user's compatibility.IEEE 802.3af standard is the new standard based on Power over Ethernet system POE, it has increased by the directly relevant criterion of power supply of netting twine on the basis of IEEE 802.3, being the expansion of existing ethernet standard, is also first international standard about power distribution.
PSE (Power Sourcing Equipment) refers to the equipment into the power supply of ethernet client equipment, has following features: 1, and backward compatible IEEE802.3af/at Power over Ethernet standard.2, PSE network interface transmits POE (Power Over Ethernet) direct current with four lines to mode powers to PD (Power Device).3, remove AC socket and adapter power supply from, make operational environment safer, clean and tidy.
Fig. 1 is PSE multi bri device entire system schematic diagram, as shown in Figure 1, its operation principle: POE power supply (POE power supply) provides power supply to power to external PD to network interface (RJ45) by POE circuit (power over Ethernet circuitry) by network transformer (transformers).Concrete PSE power supply circuits as shown in Figure 2, comprise the POE power supply of power supply and PSE chip and peripheral circuit composition, export needed DC power supply, wherein peripheral circuit mainly comprises the voltage-stabiliser tube TVS1 that is attempted by power supply output two ends, and diode D1 and the D2 of one-way conduction, PSE equipment PHY end passes through network transformer T1 by output network signal TX_0P, TX_0N, be linked into RJ45 port, receive network signal RX_0P, the RX_0N by RJ45 port by network transformer simultaneously.
Because the each power supply network interface of PSE power supply unit nowadays all needs to reach lightning Protection Design requirement, therefore, there is lightning Protection circuit, the operation principle of traditional PS E multi bri device lightning Protection circuit is as shown in Figure 2; It need to give lightning Protection circuit of each port equipment, and as shown in Figure 2, concrete circuit comprises: 1, PSE equipment PHY end; 2, T1 network transformer; 3,44-57V power supply; 4, PSE chip PD69108 circuit module; 5, RJ45 network interface end; 6, TVS1, TVS2 protective device TVS pipe; 7, D1, D2 one-way conduction diode; 8, RV1 protective device piezo-resistance or discharge tube; 9, C1, C2 electric capacity; 10, R1, R2 resistance.
Protection circuit above is mainly made up of protective device TVS pipe TVS2 and protective device RV1, and RV1 protective device can be piezo-resistance or discharge tube.Here PSE equipment is by the compatible function of supplying power of RJ45, so each RJ45 needs necessary lightning Protection requirement, in circuit diagram, lightning test is squeezed into by RJ45 network interface end, and through TVS2, RV1 the releasing of path of being struck by lightning returned.
The much more every network interface ends of PSE equipment repeat to increase by one group of TVS2, and the lightning Protection circuit of RV1 also requires manyly for the more PSE equipment protection devices of port number, be all a kind of burden for PCB fabric swatch layout and cost.
Utility model content
The purpose of this utility model is to provide a kind of lightning Protection circuit of PSE multi bri device.This circuit is arranged on the output of POE power supply, does not need, to each end, lightning Protection circuit is set again, has simplified circuit.
The technical solution of the utility model is: a kind of lightning Protection circuit of PSE multi bri device, the POE power supply of PSE comprises DC power supply and PSE chip, described PSE chip is arranged on the output of DC power supply, the positive pole of DC power supply forms the positive pole of POE power supply, the negative pole of POE power supply is connected with the negative pole of PSE chip and DC power supply with diode D2 by diode D1 respectively, the negative electrode of diode D1 connects PSE chip, and the anode of diode D2 connects the negative pole of DC power supply;
This lightning Protection circuit is arranged on the output of POE power supply, comprises the second charge-discharge protector RV2, the 3rd charge-discharge protector RV3 and diode D3;
The second described charge-discharge protector RV2 is arranged between POE power supply positive pole and protection ground;
The 3rd described charge-discharge protector RV3 is arranged between DC power cathode and protection ground;
Described diode D3 is connected between POE power supply positive pole and POE power supply negative pole, and the anode of diode D3 connects POE power supply negative pole.
Further, in the lightning Protection circuit of above-mentioned PSE multi bri device: the second described charge-discharge protector RV2 is piezo-resistance or discharge tube; The 3rd described charge-discharge protector RV3 is piezo-resistance or discharge tube.
The utility model circuit is simple, can
fullfoot product lightning Protection demand, by optimize lightning protection component design on thunder-strike current path, also simplified lightning protection component, the space of optimizing distribution, simple and easy lifting lightning protection grade, saves product cost, etc. feature.
Below in conjunction with specific embodiment, the utility model is described in more detail.
Accompanying drawing explanation
Fig. 1 is PSE multi bri device entire system schematic diagram.
Fig. 2 is the circuit diagram of current PSE multi bri device lightning Protection circuit arrangement.
Fig. 3 and Fig. 4 are the circuit diagram of the PSE multi bri device lightning Protection circuit arrangement of the present embodiment.
Embodiment
The present embodiment provides a kind of lightning Protection circuit of the PSE multi bri device arranging from POE power output end, is arranged on the output of POE power supply, comprises the second charge-discharge protector RV2, the 3rd charge-discharge protector RV3 and diode D3;
The second charge-discharge protector RV2 is arranged between POE power supply positive pole and protection ground;
The 3rd charge-discharge protector RV3 is arranged between DC power cathode and protection ground;
Diode D3 is connected between POE power supply positive pole and POE power supply negative pole, and the anode of diode D3 connects POE power supply negative pole.
Wherein the second charge-discharge protector RV2 is piezo-resistance or discharge tube; The 3rd charge-discharge protector RV3 is piezo-resistance or discharge tube.
Use in PSE physical circuit as shown in Figure 3 and Figure 4:
The operation principle of PSE multi bri device lightning Protection circuit: circuit comprises: 1, PSE equipment PHY end; 2, T1 network transformer; 3,44-57V power supply; 4, PSE chip PD69108 circuit module; 5, RJ45 network interface end; 6, TVS1 protective device TVS pipe; 7, D1, D2, D3 one-way conduction diode; 8, RV2, RV3 protective device piezo-resistance or discharge tube; 9, C1, C2 electric capacity; 10, R1, R2 resistance.
In circuit diagram, lightning test is rectified to squeezing into the earth by RJ45 network interface, surge forward current is as Fig. 3 dotted arrow sign, the surge current arrow indication of V_main+ is returned to the earth by RV2, and the surge current arrow indication of V_neg-is by D3, and RV2 returns to the earth.
In circuit diagram, lightning test is squeezed into the earth by RJ45 network interface end negative sense, negative sense surge current is as Fig. 4 dotted arrow sign, the surge current arrow indication of V_main+ is returned to RJ45 by RV2, and the surge current arrow indication of V_neg-is by RV3, and D2 returns to RJ45.
Through the lightning Protection circuit of optimizing, the lightning protection component of PSE multi bri device can not increased because increasing port number necessity, can increase according to product actual demand the D3 of some, RV2, RV3, reach and simplify lightning protection component, save cloth board space, simple and easy lifting lightning protection grade, the effect of optimizing product.
Claims (2)
1. the lightning Protection circuit of a PSE multi bri device, the POE power supply of PSE comprises DC power supply and PSE chip, described PSE chip is arranged on the output of DC power supply, the positive pole of DC power supply forms the positive pole of POE power supply, the negative pole of POE power supply is connected with the negative pole of PSE chip and DC power supply with diode D2 by diode D1 respectively, the negative electrode of diode D1 connects PSE chip, and the anode of diode D2 connects the negative pole of DC power supply;
It is characterized in that: this lightning Protection circuit is arranged on the output of POE power supply, comprise the second charge-discharge protector RV2, the 3rd charge-discharge protector RV3 and diode D3;
The second described charge-discharge protector RV2 is arranged between POE power supply positive pole and protection ground;
The 3rd described charge-discharge protector RV3 is arranged between DC power cathode and protection ground;
Described diode D3 is connected between POE power supply positive pole and POE power supply negative pole, and the anode of diode D3 connects POE power supply negative pole.
2. the lightning Protection circuit of PSE multi bri device according to claim 1, is characterized in that: the second described charge-discharge protector RV2 is piezo-resistance or discharge tube; The 3rd described charge-discharge protector RV3 is piezo-resistance or discharge tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320708395.1U CN203596614U (en) | 2013-11-08 | 2013-11-08 | Lightning protection circuit for PSE (Power Source Equipment) multiport equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320708395.1U CN203596614U (en) | 2013-11-08 | 2013-11-08 | Lightning protection circuit for PSE (Power Source Equipment) multiport equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203596614U true CN203596614U (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320708395.1U Expired - Fee Related CN203596614U (en) | 2013-11-08 | 2013-11-08 | Lightning protection circuit for PSE (Power Source Equipment) multiport equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203596614U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201662A (en) * | 2014-09-17 | 2014-12-10 | 深圳科安达电子科技股份有限公司 | System for providing surge energy control for POE (power over Ethernet) Ethernet |
| CN104934957A (en) * | 2015-07-10 | 2015-09-23 | 上海斐讯数据通信技术有限公司 | POE switch lightning protection circuit |
| CN106602505A (en) * | 2017-02-16 | 2017-04-26 | 深圳市菲菱科思通信技术股份有限公司 | Non-standard PoE power supply system used for Ethernet |
| CN106786433A (en) * | 2017-02-16 | 2017-05-31 | 深圳市菲菱科思通信技术股份有限公司 | The new lightning Protection circuit of PoE electric power systems |
| CN107976597A (en) * | 2017-11-27 | 2018-05-01 | 晶晨半导体(上海)股份有限公司 | A kind of surge test circuit |
| CN109274083A (en) * | 2018-10-08 | 2019-01-25 | 深圳市三旺通信技术有限公司 | A kind of POE interface surge protection circuit |
| CN110581540A (en) * | 2018-06-08 | 2019-12-17 | 华为技术有限公司 | power supply equipment and power over Ethernet system |
| CN114597880A (en) * | 2022-03-04 | 2022-06-07 | 深圳市吉祥腾达科技有限公司 | Net mouth lightning protection system of floating equipment |
-
2013
- 2013-11-08 CN CN201320708395.1U patent/CN203596614U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201662A (en) * | 2014-09-17 | 2014-12-10 | 深圳科安达电子科技股份有限公司 | System for providing surge energy control for POE (power over Ethernet) Ethernet |
| CN104934957A (en) * | 2015-07-10 | 2015-09-23 | 上海斐讯数据通信技术有限公司 | POE switch lightning protection circuit |
| CN106602505A (en) * | 2017-02-16 | 2017-04-26 | 深圳市菲菱科思通信技术股份有限公司 | Non-standard PoE power supply system used for Ethernet |
| CN106786433A (en) * | 2017-02-16 | 2017-05-31 | 深圳市菲菱科思通信技术股份有限公司 | The new lightning Protection circuit of PoE electric power systems |
| CN107976597A (en) * | 2017-11-27 | 2018-05-01 | 晶晨半导体(上海)股份有限公司 | A kind of surge test circuit |
| CN110581540A (en) * | 2018-06-08 | 2019-12-17 | 华为技术有限公司 | power supply equipment and power over Ethernet system |
| US11183838B2 (en) | 2018-06-08 | 2021-11-23 | Huawei Technologies Co., Ltd. | Power sourcing equipment and power over ethernet system |
| CN109274083A (en) * | 2018-10-08 | 2019-01-25 | 深圳市三旺通信技术有限公司 | A kind of POE interface surge protection circuit |
| CN114597880A (en) * | 2022-03-04 | 2022-06-07 | 深圳市吉祥腾达科技有限公司 | Net mouth lightning protection system of floating equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 |