CN204633614U - The Switching Power Supply that a kind of available category-5 cable is powered and detected - Google Patents
The Switching Power Supply that a kind of available category-5 cable is powered and detected Download PDFInfo
- Publication number
- CN204633614U CN204633614U CN201520271738.1U CN201520271738U CN204633614U CN 204633614 U CN204633614 U CN 204633614U CN 201520271738 U CN201520271738 U CN 201520271738U CN 204633614 U CN204633614 U CN 204633614U
- Authority
- CN
- China
- Prior art keywords
- module
- output
- receiving equipment
- power receiving
- common mode
- 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.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 claims abstract description 41
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 230000001629 suppression Effects 0.000 claims abstract description 6
- 230000008859 change Effects 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 10
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 210000001699 lower leg Anatomy 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses the Switching Power Supply that a kind of available category-5 cable is powered and detected, belong to electronic device field, comprise lightning protection and EMI suppression module, rectification filtering module, main transformer change circuit module, secondary commutation module, voltage detecting control module, Voltage Feedback control module, PWM control module, also comprise output detections and power receiving equipment output module; The output of output detections and power receiving equipment output module is electrically connected with power receiving equipment; The input of output detections and power receiving equipment output module is electrically connected with the output of secondary commutation module; Owing to have employed output detections and power receiving equipment output module, the object reach simplified wiring, reducing costs.
Description
Technical field
The utility model belongs to electronic device field, particularly relates to the Switching Power Supply that a kind of available category-5 cable is powered and detected.
Background technology
Switching Power Supply utilizes modern power electronics technology, the time ratio that control switch pipe turns on and off, and maintain a kind of power supply of regulated output voltage, Switching Power Supply is generally made up of pulse width modulation (PWM) control IC and MOSFET.Along with development and the innovation of power electronic technology, switch power technology is also constantly being innovated.At present, Switching Power Supply to be widely used nearly all electronic equipment with small-sized, light weight and high efficiency feature, is the indispensable a kind of power mode of current electronics and information industry develop rapidly.
Category-5 cable (0.5 data communication industrial siding) is the multimedia wire rod of the telematic services such as a kind of propagation data, speech, is widely used in the broadband access engineerings such as broadband customer premises network.
At present, network stylus, the network equipments such as wireless aps (Access Point, access point), are widely used in daily life; And in present applications ' the tail must be taken, network-termination device transmits except data except needs category 5 twisted pair, an electric power cable supply power is also wanted to carry out work, in networking traditional like this, all terminal equipments all adopt electric power networks directly to power, the deployment of cable is installed and is become complicated, and cabling is mixed and disorderly, with high costs.
Utility model content
In view of this, the Switching Power Supply that the utility model provides a kind of available category-5 cable to power and detect, to solve the problem that supply network is complicated, cabling is mixed and disorderly, with high costs in the prior art.
The utility model realizes like this, the Switching Power Supply that a kind of available category-5 cable is powered and detected, comprise lightning protection and EMI suppression module, rectification filtering module, main transformer change circuit module, secondary commutation module, voltage detecting control module, Voltage Feedback control module, PWM control module, also comprise output detections and power receiving equipment output module; The output of described output detections and power receiving equipment output module is electrically connected with power receiving equipment; The input of described output detections and power receiving equipment output module is electrically connected with the output of described secondary commutation module.
Further, the ethernet module for communication is also comprised; Described ethernet module is electrically connected with described output detections and power receiving equipment output module.
Further, described output detections and power receiving equipment output module comprise power supply unit control chip, voltage stabilizing didoe, filter capacitor, common mode inductance, detection resistance; First pin of described common mode inductance is connected with the 21 pin of the output plus terminal of described secondary commutation module and described power supply unit control chip; Crus secunda and the tripod of described common mode inductance are electrically connected with the positive and negative electrode of described power receiving equipment respectively; 4th pin of described common mode inductance is connected with the 25 pin of described power supply unit control chip, the 26 pin, the 27 pin; One end of described detection resistance is connected with the first pin of described common mode inductance, and the other end of described detection resistance is connected with the 4th pin of described common mode inductance; The negative electrode of described voltage stabilizing didoe is connected with the crus secunda of described common mode inductance; The anode of described voltage stabilizing didoe is connected with the tripod of described common mode inductance; One end of described filter capacitor is connected with the crus secunda of described common mode inductance, and the other end of described filter capacitor is connected with the tripod of described common mode inductance.
Further, also piezo-resistance is comprised; One end of described piezo-resistance is connected with the tripod of described common mode inductance; One end of described piezo-resistance is connected with the 4th pin of described common mode inductance.
Further, described output detections and power receiving equipment output module are the output detections and the power receiving equipment output module that judge whether to carry out direct current supply according to IEEE 802.af, at standard as criterion.
The available category-5 cable provided at the utility model is powered and in the Switching Power Supply that detects, owing to have employed output detections and power receiving equipment output module, the object reach simplified wiring, reducing costs.
Accompanying drawing explanation
Fig. 1 is the principle schematic of Switching Power Supply that available category-5 cable that the utility model provides is powered and detected.
Fig. 2 is the concrete enforcement schematic diagram of Switching Power Supply that available category-5 cable that the utility model provides is powered and detected.
Fig. 3 is the close-up schematic view of Switching Power Supply that available category-5 cable that the utility model provides is powered and detected.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and the embodiments, the utility model is further elaborated.Should be appreciated that embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The Switching Power Supply that the utility model provides a kind of available category-5 cable to power and detect, comprise lightning protection and EMI suppression module, rectification filtering module, main transformer change circuit module, secondary commutation module, voltage detecting control module, Voltage Feedback control module, PWM control module, also comprise output detections and power receiving equipment output module; The output of described output detections and power receiving equipment output module is electrically connected with power receiving equipment; The input of described output detections and power receiving equipment output module is electrically connected with the output of described secondary commutation module.
Owing to have employed output detections and power receiving equipment output module, the object reach simplified wiring, reducing costs.
Below in conjunction with embodiment, realization of the present utility model is described in detail.
As shown in Figure 1, Figure 2, Figure 3 shows, it is the schematic diagram of Switching Power Supply that available category-5 cable that the utility model provides is powered and detected, comprise lightning protection and EMI suppression module, rectification filtering module, main transformer change circuit module, secondary commutation module, voltage detecting control module, Voltage Feedback control module, PWM control module, also comprise output detections and power receiving equipment output module; The output of output detections and power receiving equipment output module is electrically connected with power receiving equipment; The input of output detections and power receiving equipment output module is electrically connected with the output of secondary commutation module; So just can be detected power receiving equipment by output detections and power receiving equipment output module, accordingly by the category-5 cable of communication to supplying power for powered device.
Further, the ethernet module for communication is also comprised; Ethernet module is electrically connected with output detections and power receiving equipment output module; So just can ensure that communication can normally be carried out.
Further, output detections and power receiving equipment output module comprise power supply unit control chip U3, voltage stabilizing didoe ZD2, filter capacitor C24, common mode inductance LF2, detect resistance R43; First pin of common mode inductance LF2 is connected with the 21 pin of the output plus terminal of secondary commutation module and power supply unit control chip U3; Crus secunda and the tripod of common mode inductance LF2 are electrically connected with the positive and negative electrode of power receiving equipment respectively; 4th pin of common mode inductance LF2 is connected with the 25 pin of power supply unit control chip U3, the 26 pin, the 27 pin; The one end detecting resistance R43 is connected with first pin of common mode inductance L F2, and the other end detecting resistance R43 is connected with the 4th pin of common mode inductance L F2; The negative electrode of voltage stabilizing didoe ZD2 is connected with the crus secunda of common mode inductance L F2; The anode of voltage stabilizing didoe ZD2 is connected with the tripod of common mode inductance L F2; One end of filter capacitor C24 is connected with the crus secunda of common mode inductance L F2, and the other end of filter capacitor C24 is connected with the tripod of common mode inductance L F2; Can ensure to be added to by the filter circuit adopting voltage stabilizing didoe ZD2, filter capacitor C24, common mode inductance LF2 form the magnitude of voltage fluctuation detected on resistance R43 little, accuracy of detection so just can be made to improve.
Further, also piezo-resistance MOV3 is comprised; One end of piezo-resistance MOV3 is connected with the tripod of common mode inductance L F2; One end of piezo-resistance MOV3 is connected with the 4th pin of common mode inductance L F2; So just can prevent the surge voltage impact transmitted from power receiving equipment from detecting.
Further, described output detections and power receiving equipment output module are the output detections and the power receiving equipment output module that judge whether to carry out direct current supply according to IEEE 802.af, at standard as criterion; Do not meet IEEE 802.af, at network-termination device no-output like this; Meet IEEE 802.af and export minimum 15.4W, meet IEEE 802.at and export minimum 24W.
Operation principle of the present utility model: alternating current 90-264Vac changes circuit module through lightning protection and EMI suppression module, rectification filtering module, main transformer, secondary commutation module, voltage detecting control module, Voltage Feedback control module, PWM control module convert to and export direct current 48V; Output detections and power receiving equipment output module are connected between secondary commutation module and network-termination device, network-termination device is detected for realizing and powers, IEEE 802.af, at standard whether is met according to detecting network-termination device, if meet standard, detect power receiving equipment output module to power to network-termination device, can without power supply to network-termination device as do not met, until there is the network-termination device meeting IEEE 802.af, at standard just can export to power, for equipment provides energy.Particularly, as shown in Figure 2, first secondary commutation module exports 48V voltage supply U3 operating voltage, secondary commutation module exports 48V voltage and supplies network-termination device through the MOS of the inside of U3, connect the detection power receiving equipment output module of this power supply at network-termination device after, detect power receiving equipment output module and signal is sent to network-termination device, signal is that twice between 2.8V ~ 10V detects voltage, detect voltage degree of convergence difference more than 1V for twice, then at 25 of U3, 26, 27 pin detect the current value that added twice voltage circuit is corresponding, carry out calculating DC impedance value, symbol IEEE 802.af is judged whether according to DC impedance value, the network-termination device of at standard, the criterion of test process is as follows:
A). DC impedance is between 19k-26.5kohm, and capacitance is less than or equal to 150nF, is considered to legal PD equipment (Power Device), can powers;
B). DC impedance is less than 15k or is greater than 33kohm, or the about 10 μ F of capacitance, is considered to invalid PD equipment, forbids power supply;
C). DC impedance at 15k-19kohm, or is considered to over current protection impedance area between 26.5-33kohm, can power and also can not power;
When meeting Class A Network equipment, next carry out the graduation of network-termination device power, the concrete grammar of classification is the detecting voltage applying a 15.5V to 20.5V on cable, and current limit is at below 100mA, and the time is between 10-75ms.Classification current is as follows:
When classification current grade is 0-3 level, power supply exports maximum current 400-441mA, when classification current grade is 4 grades, it is after 684-756mA. completes Sampling network terminal equipment and power classification that power supply exports TV university electric current, detects power receiving equipment output module and starts to network-termination device 48V voltage of powering.
In a word, owing to have employed output detections and power receiving equipment output module, the object reach simplified wiring, reducing costs.
The foregoing is only better embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (5)
1. the available category-5 cable Switching Power Supply of powering and detecting, comprise lightning protection and EMI suppression module, rectification filtering module, main transformer change circuit module, secondary commutation module, voltage detecting control module, Voltage Feedback control module, PWM control module, it is characterized in that: also comprise output detections and power receiving equipment output module; The output of described output detections and power receiving equipment output module is electrically connected with power receiving equipment; The input of described output detections and power receiving equipment output module is electrically connected with the output of described secondary commutation module.
2. the available category-5 cable as claimed in claim 1 Switching Power Supply of powering and detecting, is characterized in that, also comprise the ethernet module for communication; Described ethernet module is electrically connected with described output detections and power receiving equipment output module.
3. the available category-5 cable as claimed in claim 1 or 2 Switching Power Supply of powering and detecting, it is characterized in that, described output detections and power receiving equipment output module comprise power supply unit control chip, voltage stabilizing didoe, filter capacitor, common mode inductance, detection resistance; First pin of described common mode inductance is connected with the 21 pin of the output plus terminal of described secondary commutation module and described power supply unit control chip; Crus secunda and the tripod of described common mode inductance are electrically connected with the positive and negative electrode of described power receiving equipment respectively; 4th pin of described common mode inductance is connected with the 25 pin of described power supply unit control chip, the 26 pin, the 27 pin; One end of described detection resistance is connected with the first pin of described common mode inductance, and the other end of described detection resistance is connected with the 4th pin of described common mode inductance; The negative electrode of described voltage stabilizing didoe is connected with the crus secunda of described common mode inductance; The anode of described voltage stabilizing didoe is connected with the tripod of described common mode inductance; One end of described filter capacitor is connected with the crus secunda of described common mode inductance, and the other end of described filter capacitor is connected with the tripod of described common mode inductance.
4. the available category-5 cable as claimed in claim 3 Switching Power Supply of powering and detecting, is characterized in that, also comprise piezo-resistance; One end of described piezo-resistance is connected with the tripod of described common mode inductance; One end of described piezo-resistance is connected with the 4th pin of described common mode inductance.
5. the available category-5 cable as claimed in claim 4 Switching Power Supply of powering and detecting, it is characterized in that, described output detections and power receiving equipment output module are the output detections and the power receiving equipment output module that judge whether to carry out direct current supply according to IEEE 802.af, at standard as criterion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520271738.1U CN204633614U (en) | 2015-04-30 | 2015-04-30 | The Switching Power Supply that a kind of available category-5 cable is powered and detected |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520271738.1U CN204633614U (en) | 2015-04-30 | 2015-04-30 | The Switching Power Supply that a kind of available category-5 cable is powered and detected |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204633614U true CN204633614U (en) | 2015-09-09 |
Family
ID=54052597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520271738.1U Expired - Fee Related CN204633614U (en) | 2015-04-30 | 2015-04-30 | The Switching Power Supply that a kind of available category-5 cable is powered and detected |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204633614U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238689A (en) * | 2017-07-24 | 2017-10-10 | 重庆环投生态环境监测网络与工程治理有限公司 | Wireless detecting system is used in sewage treatment process |
-
2015
- 2015-04-30 CN CN201520271738.1U patent/CN204633614U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238689A (en) * | 2017-07-24 | 2017-10-10 | 重庆环投生态环境监测网络与工程治理有限公司 | Wireless detecting system is used in sewage treatment process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105162228B (en) | Intelligent charger and its charging control circuit | |
| CN104578826B (en) | Switching Power Supply and the method that constant pressure and current constant control are provided in Switching Power Supply | |
| US10199818B2 (en) | System and method for wireless power transfer using over-voltage protection | |
| CN106027268B (en) | Ethernet power supply system and control circuit | |
| CN106033400B (en) | Universal serial bus cable species detection device and method | |
| CN112072766A (en) | Charging device | |
| CN209282899U (en) | A kind of airborne USB charging control circuit and power supply | |
| KR20190136981A (en) | Powered device | |
| CN101163018B (en) | Power conversion device for power receiving end equipment of Ethernet power supply system | |
| US20100207664A1 (en) | Input voltage detecting circuit and power supply having such input voltage detecting circuit | |
| US7468567B1 (en) | Power switching apparatus and network equipment | |
| CN204633614U (en) | The Switching Power Supply that a kind of available category-5 cable is powered and detected | |
| CN101582632A (en) | Switching power supply and electric equipment using switching power supply | |
| CN204681263U (en) | Be applied to the switching power source control circuit system of power amplifier | |
| CN205864444U (en) | The POE detection output circuit of a kind of WIFI equipment and WIFI equipment | |
| CN106160520B (en) | Voltage conversion device | |
| CN203896028U (en) | Multi-port usb charger | |
| US9941804B1 (en) | Power supply system | |
| CN212324007U (en) | Power adapter and electronic equipment | |
| CN111585457B (en) | Power adapter and electronic equipment | |
| CN102545632A (en) | Driving circuit for switching power supply | |
| CN210608949U (en) | Voltage transformation rectifying circuit and charger | |
| CN211018347U (en) | Multi-port charging equipment | |
| CN207926437U (en) | A switching power supply | |
| CN108599280B (en) | On-line power taking circuit and system of current limiter in DC transmission system |
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: 20150909 |