CN207853914U - PoE equipment without network transformer - Google Patents
PoE equipment without network transformer Download PDFInfo
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- CN207853914U CN207853914U CN201720947205.XU CN201720947205U CN207853914U CN 207853914 U CN207853914 U CN 207853914U CN 201720947205 U CN201720947205 U CN 201720947205U CN 207853914 U CN207853914 U CN 207853914U
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Abstract
The utility model is related to ethernet technology field, more particularly to a kind of PoE equipment of no network transformer, including：Chip, signal processing module, high_voltage isolation circuit with PHY functions and RJ45 connectors；Chip with PHY functions is connect by signal processing module with high_voltage isolation circuit；High_voltage isolation circuit is connect with RJ45 connectors；Isolation circuit is connected with the power input of PoE power supply units or the power supply output of power receiving equipment, and RJ45 connectors are connect with PoE equipment.The PoE equipment of no network transformer provided by the utility model does not contain network transformer, the only discrete electronic device of signal processing module setting, placement-and-routing is flexible, reduce cost and fabric swatch space, be conducive to product miniaturization, portable design and user experience, it can be used in the application scenarios of some limited spaces or modernization intelligent construction, be easy to implement the popularization and application of equipment.
Description
Technical field
The utility model is related to ethernet technology field, more particularly to a kind of PoE equipment of no network transformer.
Background technology
Industry mainly has IEEE 802.3af and IEEE802.3at about the standard of PoE, supports maximum PD power consumptions
25.5w.In addition, the nonstandard LTPoE++ that also Linear companies propose, is widely used, the PD power consumptions for being up to 90w are supported.PoE nets
Network transformer is connected between the ports PHY and RJ45 connectors, one for realizing the chip with PHY functions with it is extraneous electrical
Isolation, lightning protection avoid the chip with PHY functions by broken by lightning；Secondly being used for common mode inhibition, differential mode is coupled, is made
Signal is transmitted without distortions, supports the telecommunication up to 100m；Thirdly PoE is supported to be inputted for electricity output or by electricity,
It is carried out at the same time data communication, isolation PoE high pressures and the chip with PHY functions.In view of the foregoing, existing common PoE equipment
It is not detached from the use of PoE network transformers.With the demand that market loads big power consumption PD, PoE network transformers must expire
Foot supports the ability of High-current output, and customization is of high cost, and volume becomes larger, and the Miniaturization Design and application for being unfavorable for equipment push away
Extensively.Also, the chip with PHY functions-PoE network transformers-RJ45 connectors-are all passed through in the docking of all PoE equipment
Communication link as cable-RJ45 connectors-chip of the PoE network transformers-with PHY functions, including at least two
PoE network transformers, especially for this similar PoE equipment for needing to provide multiple external-connected ports of router or hub,
Cost is higher, occupies a large amount of cloth plate suqares.
Utility model content
The utility model solves PoE equipment in the prior art by providing a kind of PoE equipment of no network transformer
Using of high cost caused by network transformer, occupied space is big, if will be at the signal that lead to area of low pressure without network transformer
The technical issues of reason circuit and the chip with PHY functions are broken down by high-voltage.Using the PoE equipment of no network transformer, reduce
Cost and fabric swatch space are easy to implement the popularization and application of PoE equipment and other expanded functions, handle and can avoid by high_voltage isolation
The signal processing circuit of area of low pressure and chip with PHY functions are broken down by high-voltage.
The utility model provides a kind of PoE equipment of no network transformer, includes the chip with PHY functions, at signal
Manage module, high_voltage isolation circuit and RJ45 connectors；
The chip of the band PHY functions is connect by the signal processing module with the high_voltage isolation circuit；
The high_voltage isolation circuit is connect with the RJ45 connectors；
The high_voltage isolation circuit is connected with the power input of PoE power supply units or the power supply output of power receiving equipment, institute
RJ45 connectors are stated to connect with PoE power supplies or power receiving equipment.
Further, the signal processing module includes：Termination power；
Setting P line ends mouth and N line end mouths, the P line ends mouth and the N line ends mouth structure in the chip of the band PHY functions
At data difference separated time pair, select access differential to quantity according to connection speed demand；
The signal processing module includes the input of the first P lines and output port, the input of the first N lines and output port, the 2nd P
Line inputs and output port and the input of the 2nd N lines and output port；The first P lines input and output port and the first N
Line is inputted constitutes data difference separated time pair with output port, the 2nd P lines input and output port and the 2nd N lines input with
Output port constitutes data difference separated time pair；The signal processing module can select access differential logarithm according to connection speed demand
Amount；
The RJ45 connectors include first network port and second network port；
The P line ends mouth is inputted with the first P lines and is connect with output port, the first P lines input and output port
It is connect with the termination power；The termination power is inputted with the 2nd P lines and is connect with output port；The 2nd P lines are defeated
Enter and is connect with the first network port by the high_voltage isolation circuit with output port；
The N line ends mouth is inputted with the first N lines and is connect with output port, the first N lines input and output port
It is connect with the termination power；The termination power is inputted with the 2nd N lines and is connect with output port；The 2nd N lines are defeated
Enter and is connect with second network port by the high_voltage isolation circuit with output port.
Further, the signal processing module further includes：Lightning Protection circuit；
The termination power passes through the lightning Protection circuit and the 2nd P lines input and output port and described second
The input of N lines is connect with output port.
Further, the signal processing module further includes：Common mode filtering circuit；
The common mode filtering circuit and the 2nd P lines input and output port and the 2nd N lines input and output end
Mouth connection.
Further, the termination power is ac-coupled circuit, and the termination power includes：First capacitance and the second electricity
Hold；
One end of first capacitance and the first P lines are inputted to be connect with output port, first capacitance it is another
End is inputted with the 2nd P lines by the lightning Protection circuit and is connect with output port；
One end of second capacitance and the first N lines are inputted to be connect with output port, second capacitance it is another
End is inputted with the 2nd N lines by the lightning Protection circuit and is connect with output port.
Further, the lightning Protection circuit is at least level-one.
Further, the lightning Protection circuit includes：First order lightning Protection circuit and second level lightning Protection circuit；
The first order lightning Protection circuit includes：First resistor, second resistance and the first transient voltage suppressor diode；Described second
Grade lightning Protection circuit include：3rd resistor, the 4th resistance and the second transient voltage suppressor diode；
One end of the first resistor and first capacitance connection, the other end of the first resistor pass through the third
Resistance is inputted with the 2nd P lines and is connect with output port；
One end of the second resistance and second capacitance connection, the other end of the second resistance pass through the described 4th
Resistance is inputted with the 2nd N lines and is connect with output port；
One end of first transient voltage suppressor diode is connected between the second resistance and the 4th resistance,
The other end of first transient voltage suppressor diode is connected between the first resistor and the 3rd resistor；
One end of second transient voltage suppression diode inputs with the 2nd P lines and is connect with output port, described
The other end of second transient voltage suppressor diode is inputted with the 2nd N lines and is connect with output port.
Further, the resistance value of the first resistor, second resistance, 3rd resistor and the 4th resistance is greater than or equal to
0。
Further, the common mode filtering circuit includes：First inductance, the second inductance, the 5th resistance, third capacitance and
Four capacitances；
One end of first inductance and the 2nd P lines are inputted to be connect with output port, first inductance it is another
End is inputted with the 2nd N lines by second inductance and is connect with output port；
One end of 5th resistance is connected between first inductance and second inductance, the 5th resistance
The other end passes through the third capacity earth；4th capacitance is connected in parallel with the third capacitance.
Further, the high_voltage isolation circuit includes：5th capacitance, the 6th capacitance, third inductance and the 4th inductance；
One end of 5th capacitance and the 2nd P lines are inputted to be connect with output port, the 5th capacitance it is another
End is connect with the first network port；
One end of 6th capacitance and the 2nd N lines are inputted to be connect with output port, the 6th capacitance it is another
End is connect with second network port；
One end of the third inductance is connect with the first network port, and the other end of the third inductance is described in
4th inductance is connect with second network port；
The power input or power receiving equipment of the third inductance and the connecting pin and PoE power supply units of the 4th inductance
Power supply output connection.
Further, the termination power is DC coupling circuit, and the termination power includes：6th resistance and the 7th electricity
Resistance；
One end of 6th resistance and the first P lines are inputted to be connect with output port, the 6th resistance it is another
One end is inputted with the 2nd P lines by the lightning Protection circuit and is connect with output port；
One end of 7th resistance and the first N lines are inputted to be connect with output port, the 7th resistance it is another
End is inputted with the 2nd N lines by the lightning Protection circuit and is connect with output port.
One or more technical solutions provided by the utility model, at least have following advantageous effect or advantage：
The PoE equipment of no network transformer provided by the utility model, since the chip with PHY functions passes through signal processing
Module and high_voltage isolation circuit are connect with RJ45 connectors, which does not contain network transformer, only signal processing mould
Block includes discrete electronic device, and placement-and-routing is flexible, reduces cost and fabric swatch space, is conducive to product and minimizes, is portable
Design and user experience can use in the application scenarios of some limited spaces or modernization intelligent construction, convenient for real
The popularization and application of existing equipment.The PoE equipment of no network transformer provided by the utility model, high_voltage isolation circuit are low for being isolated
Intermediate pressure section and high-pressure area, high_voltage isolation circuit is by PoE equipment high_voltage isolation in signal processing circuit and core with PHY functions
Except piece, the signal processing circuit of area of low pressure and the chip with PHY functions is avoided to be broken down by high-voltage.
The PoE equipment of no network transformer provided by the utility model, be free of network transformer, the telecommunication circuit with it is existing
Ethernet device docking, only one transformer of the service of connection devices in link can make full use of existing resource, realize that distance is up to
The data communication of at least 80m and PoE power or by electricity.Certainly, for back-to-back data transmission, the equipment room containing the design
Also communication and PoE power supplies can be docked or by electricity.
The PoE equipment of no network transformer provided by the utility model, including termination power, lightning Protection circuit and common mode
Filter circuit, support at least differential mode 500V, common mode 1KV lightning surges, integrated communication quality no less than tradition containing transformer with
Too network interface application circuit.
Description of the drawings
PoE without network transformer on the standard ethernet and Fast Ethernet that Fig. 1 provides for the utility model embodiment
Device structure schematic diagram；
PoE device structures signal without network transformer on the gigabit Ethernet that Fig. 2 provides for the utility model embodiment
Figure.
Specific implementation mode
The utility model embodiment solves PoE in the prior art by providing a kind of PoE equipment of no network transformer
Equipment uses of high cost, occupied space caused by network transformer big and the signal processing circuit of area of low pressure and with PHY work(
The technical issues of chip of energy is broken down by high-voltage.Using the PoE equipment of no network transformer, cost and fabric swatch space are reduced,
It is easy to implement the popularization and application of PoE equipment and other expanded functions, the signal that can avoid area of low pressure is handled by high_voltage isolation
Processing circuit and chip with PHY functions are broken down by high-voltage.
The technical solution of the utility model embodiment is in order to solve the above technical problems, general thought is as follows：
Referring to Fig. 1, the utility model embodiment provides a kind of PoE equipment of no network transformer, including band PHY functions
Chip 1, signal processing module 2, high_voltage isolation circuit 3 and RJ45 connectors 4.Chip 1 with PHY functions passes through signal processing
Module 2 is connect with high_voltage isolation circuit 3；High_voltage isolation circuit 3 is connect with RJ45 connectors 4；Isolation circuit and PoE power or
The power supply of power receiving equipment connects, and RJ45 connectors 4 are connect with PD power receiving equipments.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
Technical solution is stated to be described in detail.
Embodiment one
A kind of PoE equipment of no network transformer is present embodiments provided, is set referring to Fig. 1, the PoE without network transformer
It is standby to include：Chip 1, signal processing module 2, high_voltage isolation circuit 3 with PHY functions and RJ45 connectors 4.Wherein, band PHY work(
The chip 1 of energy includes that P line end mouth TRD_P and N line end mouths TRD_N, a P line end mouth TRD_P and a N line end mouths TRD_N constitute number
According to differential pair, access data difference demand pairs amount is selected according to the demand of connection speed, for example, connection speed is 10Mbps
When, using two pairs of data differential pairs；When connection speed is 1000Mbps, using four pairs of data differential pairs.In the present embodiment,
Connection speed is 10Mbps, and the chip 1 of the function containing PHY includes two groups of differential data line ports, every group of differential data line port packet
Include an a P line end mouth TRD_P and N line end mouths TRD_N.Signal processing module 2 include the first P lines input with output port SI0_P,
First N lines input and output port SI0_N, the input of the 2nd P lines and output port SO0_P and the input of the 2nd N lines and output port
SO0_N；First P lines are inputted constitutes data difference separated time pair with output port SI0_P and the input of the first N lines with output port SI0_N,
2nd P lines are inputted constitutes data difference separated time pair with output port SO0_P and the input of the 2nd N lines with output port SO0_N.RJ45 connects
It includes four groups of network port LAN1~LAN8 to connect device 4, for standard ethernet (10Mbit/s), Fast Ethernet (100Mbit/
S) 2 pairs of data lines are used only, i.e. LAN1, LAN2, LAN3 and LAN6, in the present embodiment, one group of differential data line port corresponds to one
Group input and output port and one group of network port.Below with one group of differential data line port, one group of input port, one group of output
The Ethernet interface telecommunication circuit without network transformer is illustrated for port and one group of network port：
Referring to Fig. 1, signal processing module 2 includes：Termination power, lightning Protection circuit and common mode filtering circuit.Wherein, coupling
Closing circuit includes：First capacitance C1 and the second capacitance C2 constitutes AC termination powers.The present embodiment includes two-stage lightning Protection electricity
Road, first order lightning Protection circuit include：First resistor R1, second resistance R2 and the first transient voltage suppressor diode TVS1；
Second level lightning Protection circuit includes：3rd resistor R3, the 4th resistance R4 and the second transient voltage suppressor diode TVS2.Common mode
Filter circuit includes：First inductance L1, the second inductance L2, the 5th resistance R5, third capacitance C3 and the 4th capacitance C4.P line end mouths
TRD_P is inputted with the first P lines and is connect with output port SI0_P, and one end of the first capacitance C1 is inputted with the first P lines and output end
Mouth SI0_P connections, the other end of the first capacitance C1 are connect by first resistor R1 with 3rd resistor R3,3rd resistor R3 and second
The input of P lines connect with output port SO0_P, and the 2nd P lines input and output port SO0_P passes through high_voltage isolation capacitance C5 and the
One network port LAN1 connections.N line end mouth TRD_N are inputted with the first N lines and are connect with output port SI0_N, the second capacitance C2's
One end inputs with the first N lines and is connect with output port SI0_N, and the other end of the second capacitance C2 passes through the electricity of second resistance R2 and the 4th
R4 connections are hindered, the 4th resistance R4 is inputted with the 2nd N lines and connect with output port SO0_N, the input of the 2nd N lines and output port SO0_
N is connect by high_voltage isolation capacitance C6 with the second network port LAN2.One end of first transient voltage suppressor diode TVS1 with
It is connected between second resistance R2 and the 4th resistance R4, the other end of the first transient voltage suppressor diode TVS1 is connected to first
Between resistance R1 and 3rd resistor R3；One end of second transient voltage suppression diode TVS2 is inputted with the 2nd P lines and output end
Mouth SO0_P connections, the other end of the second transient voltage suppressor diode TVS2 and the input of the 2nd N lines connect with output port SO0_N
It connects.One end of first inductance L1 and the 2nd P lines are inputted to be connect with output port SO0_P, and the other end of the first inductance L1 passes through the
Two inductance L2 are inputted with the 2nd N lines and are connect with output port SO0_N.One end of 5th resistance R5 is connected to the first inductance L1 and
The other end of the centre of two inductance L2, the 5th resistance R5 is grounded by third capacitance C3；4th capacitance C4 and third capacitance C3 is simultaneously
Connection connection.
Signal processing module 2 is the circuit being made of discrete electronic device, is with the one pair of which differential data in Fig. 1
Example, data are from the input of the first P lines of signal processing module 2 and output port SI0_P and the first N lines input and output port
After SI0_N enters, AC couplings are carried out by the first capacitance C1 and the second capacitance C2, for optimizing output and input signal, are eliminated
Influence of the terminal device level differences to signal, filters out DM EMI, to realize that long range signals communicate, then from signal processing
The 2nd P lines input of module 2 is exported with output port SO0_P and N line output terminal SO0_N to high pressure isolation circuit 3.By signal
Data that treated are directly exported by RJ45 connectors 4, are docked with common ethernet device by cable, are supported to be up to
The data of 80m communicate, and entire communication link only has a network transformer on common ethernet device.Certainly, for back to
The data transmission of the back of the body, the equipment room containing the design can also dock communication and PoE power supplies or by electricity.
Referring to Fig. 1, in order to realize corresponding lightning protection grade, 3rd resistor R3, the 4th resistance R4 and the second transient state electricity simultaneously
Constrain diode TVS2 processed and constitute first order lightning Protection, after the big voltage that is struck by lightning is come in from RJ45 connectors 4, by the
Two transient voltage suppressor diode TVS2 absorb instantaneous large-current, and both end voltage is clamped down on and inhibits two poles in the second transient voltage
On the scheduled voltages of pipe TVS2, then by 3rd resistor R3 and the 4th resistance R4 current limlitings, protect late-class circuit.First resistor R1,
Second resistance R2 and the first transient voltage suppressor diode TVS1 constitute second level lightning Protection, will pass through first order lightning Protection
Residual voltage afterwards is limited in transient voltage suppressor diode TVS1 on smaller predetermined voltage, by first resistor R1, second
It is last to band PHY work(by the first capacitance C1, the second capacitance C2 isolated DC voltages coupled for AC after resistance R2 current limlitings
The chip 1 of energy.2nd P lines input and output port SO0_P and the input of the 2nd N lines and the first electricity of connecting between output port SO0_N
Feel L1 and the second inductance L2, and in the junction of the first inductance L1 and the second inductance L2, the 5th resistance R5 is accessed, with shunt capacitance
Series connection ground connection GND, is used for filtering common mode signal after third capacitance C3 and the 4th capacitance C4, solves RE (Radiated
Emission, radiation) and CE (Conduction Emission, conduction) problem.In the application, can be increased according to actual demand
Delete multistage lightning Protection circuit, it is possibility to have some other protective device, such as thermistor, varistor, gas-discharge tube
It is constituted Deng one or more of protection device, it is different according to practical application scene and equipment difference, for preventing difference
Mould, common mode lightning surge avoid lightning stroke from damaging chip by the ports PHY 1, can support at least differential mode 500V, common mode 1KV lightning stroke waves
It gushes.
Referring to Fig. 1, high_voltage isolation circuit 3 includes：5th capacitance C5, the 6th capacitance C6, third inductance L3 and the 4th inductance
L4.One end of 5th capacitance C5 inputs with the 2nd P lines and is connect with output port, the other end and the first network end of the 5th capacitance C5
Mouth LAN1 connections；The other end of 6th capacitance C6 and the 2nd N lines are inputted to be connect with output port, the other end of the 6th capacitance C6 and
Second network port LAN2 connections.One end of third inductance L3 is connect with first network port LAN1, and third inductance L3's is another
End is connect by the 4th inductance L4 with the second network port LAN2；The connecting pin of third inductance L3 and the 4th inductance L4 are supplied with PoE
The power input of electric equipment or the power supply output connection of power receiving equipment.
Referring to Fig. 1, carry out data transmission while high_voltage isolation circuit 3 is for loading power supply or receiving voltage, is isolated
Area of low pressure and high-pressure area avoid the signal processing circuit 2 of area of low pressure and the chip 1 with PHY functions from being broken down by high-voltage.Through
Cross the differential signal of signal processing by after high_voltage isolation circuit 3 with PoE voltage-drop loadings together into RJ45 connectors 4,
Access point between three inductance L3 and the 4th inductance L4 as PoE plant-grid connections port VCCP.It should be noted that according to reality
It needs, the access point of PoE plant-grid connections port VCCN is also can be used as between third inductance L3 and the 4th inductance L4.When containing this reality
When being connect with PoE plant-grid connections port VCCP and VCCN with the power supply of novel PoE power supplies or power receiving equipment, voltage isolation
Circuit is by PoE high_voltage isolations except signal processing circuit 2 and chip 1 with PHY functions.For power source path, electric current from
VCCP is by third inductance L3 and the 4th inductance L4 to first network port LAN1 and the second network port LAN2, due to third electricity
Feel L3 and the 4th inductance L4 to lead to direct current, hinder the characteristic exchanged, on first network port LAN1 and the second network port LAN2 lines
Potential is equal, is all VCCP, and potential difference is not present, and electric current does not flow through high_voltage isolation circuit 3, signal processing circuit and with PHY
The chip 1 of function and damage device, that is, do not interfere with function, additional power consumption will not be generated.So first network port
Electric current on LAN1 and the second network port LAN2 returns again to entrance by RJ45 connectors 4 using cable to opposite equip.
VCCN, similarly, due to the 5th inductance L5 and the 6th inductance L6 lead to direct current, resistance exchange characteristic, third network port LAN3 and the
Potential on six network port LAN6 lines is equal, is all VCCN, be not present potential difference, electric current do not flow through high_voltage isolation circuit 3,
Signal processing circuit and chip 1 with PHY functions.For data communication path, signal reaches the 5th in high_voltage isolation circuit 3
When the node of capacitance C5 and third inductance L3, since there is inductance the characteristic that logical direct current, resistance exchange, capacitance to have logical exchange, resistance
The characteristic of direct current, signal are directly entered the 5th capacitance C5 and the 6th capacitance C6, and the 5th capacitance C5 and the 6th capacitance C6 filter out high pressure,
Data entering signal processing circuit carries out Signal optimum processing to the chip 1 with PHY functions, or enters together with high pressure load
RJ45 connectors 4, without enter third inductance L3 and the 4th inductance L4, so data will not because flow through inductance reach power supply and
Interference power or distortion.By cable and common PoE equipment interconnections, the data communication and power supply up to 80m are supported, entirely
Communication link only has 1 PoE network transformer in common PoE equipment, also supports and the PoE equipment interconnections containing the design.
For the demand of big power consumption load, it is only necessary to select the third inductance L3 of suitable rated current, the 4th inductance L4, the 5th inductance L5 and
6th inductance L6 supports arbitrary powerful device to access.Data communication for different rates, also only needs to select suitable inductance value
The 5th capacitance C5, the 6th capacitance of third inductance L3, the 4th inductance L4, the 5th inductance L5 and the 6th inductance L6 and suitable capacitance
C6, the 7th capacitance C7 and the 8th capacitance C8 reach data-signal without third inductance L3, the 4th inductance L4, the 5th inductance L5
Distortion is generated with the 6th inductance L6 or influences power supply, while data-signal is undistorted to greatest extent passes through the 5th capacitance C5, the
The purpose of six capacitance C6, the 7th capacitance C7 and the 8th capacitance C8.
Embodiment two
Embodiment two and the PoE equipment without network transformer that embodiment one provides are essentially identical, the difference is that：
Without containing lightning Protection circuit, at this point, resistance R1 and resistance R2 can still be arranged as required to the Ethernet in no network transformer
It is used cooperatively in port communications circuit.
Embodiment three
Embodiment three and the PoE equipment without network transformer that embodiment one provides are essentially identical, the difference is that：
The first capacitance C1 in termination power is replaced with the 6th resistance R6, and the second capacitance C2 is replaced with the 7th resistance R7, constitutes DC couplings
Circuit.
Example IV
Referring to Fig. 2, example IV and the PoE equipment without network transformer that embodiment one provides are essentially identical, different
Place is：PoE equipment applications without network transformer use 4 pairs of data lines in gigabit Ethernet (1000Mbit/s).This
Locate the 6th network port LAN6 loads of first network port LAN1/ second network port LAN2, third network port LAN3/
VCCP；The 8th network port LAN8 loads of 4th network port LAN4/ the 5th network port LAN5, the 7th network port LAN7/
VCCN.Can also be first network port second network ports of LAN1/ LAN2 load VCCP (or VCCN), the third network port
The 6th network port LAN6 load VCCN (or VCCP) of LAN3/.As shown in Fig. 2, the 5th network-sides of the 4th network port LAN4/
Mouth LAN5 and the 8th network port LAN8 of the 7th network port LAN7/ is not loaded with voltage, the 5th networks of the 4th network port LAN4/
Port the 8th network port LAN8 of LAN5 and the 7th network port LAN7/ can be not provided with inductance；4th network port LAN4/
The 8th network port LAN8 of 5th network port LAN5 load VCCP (or VCCN), the 7th network port LAN7/ records VCCN
(or VCCP), first network port the 6th network port LAN6 of LAN1/ second network port LAN2 and third network port LAN3/
It is not loaded with voltage, i.e. the 6th network port of first network port LAN1/ second network port LAN2 and third network port LAN3/
LAN6 can be not provided with inductance.
Referring to Fig. 1 and Fig. 2, one or more technical solutions that the utility model embodiment provides, at least having following has
Beneficial effect or advantage：
The PoE equipment without network transformer that the utility model embodiment provides, since the chip 1 with PHY functions passes through
Signal processing module 2 and high_voltage isolation circuit 3 are connect with RJ45 connectors 4, which does not contain network transformer, only
Signal processing module 2 includes discrete electronic device, and placement-and-routing is flexible, reduces cost and fabric swatch space, it is small to be conducive to product
Type, portable design and user experience, can be in the application scenarios of some limited spaces or modernization intelligent construction
It uses, is easy to implement the popularization and application of equipment.The PoE equipment of no network transformer provided by the utility model, high_voltage isolation electricity
Road 3 for being isolated area of low pressure and high-pressure area, high_voltage isolation circuit by PoE equipment high_voltage isolation in signal processing circuit and
Except chip 1 with PHY functions, the signal processing circuit of area of low pressure and the chip 1 with PHY functions is avoided to be broken down by high-voltage.
The PoE equipment without network transformer that the utility model embodiment provides is free of network transformer, the telecommunication circuit
Docked with existing ethernet device, only have one transformer of the service of connection devices in link, can make full use of existing resource, realize away from
From the data communication up at least 80m, while supporting to power over long distances or by electricity.Application for no long range demand,
It can be docked containing the ethernet device of the telecommunication circuit.
The PoE equipment without network transformer that the utility model embodiment provides, including termination power, lightning Protection circuit
And common mode filtering circuit, support at least differential mode 500V, common mode 1KV lightning surges, integrated communication quality to contain transformation no less than tradition
The Ethernet interface application circuit of device.
It should be noted last that the above specific implementation mode is only to illustrate the technical solution of the utility model rather than limit
System, although the utility model is described in detail with reference to example, it will be understood by those of ordinary skill in the art that, it can be right
The technical solution of the utility model is modified or replaced equivalently, without departing from the spirit and model of technical solutions of the utility model
It encloses, should all cover in the right of the utility model.
Claims (10)
1. a kind of PoE equipment of no network transformer, which is characterized in that include the chip with PHY functions, signal processing module,
High_voltage isolation circuit and RJ45 connectors；
The chip of the band PHY functions is connect by the signal processing module with the high_voltage isolation circuit；The high pressure every
It is connect with the RJ45 connectors from circuit；The high_voltage isolation circuit is set with the power input of PoE power supply units or by electricity
Standby power supply output connection, the RJ45 connectors are powered with PoE or power receiving equipment is connect.
2. the PoE equipment without network transformer as described in claim 1, which is characterized in that the signal processing module includes：
Termination power；
Setting P line ends mouth and N line end mouths in the chip of the band PHY functions, the P line ends mouth and the N line ends mouth constitute number
According to differential pair, select access differential to quantity according to connection speed demand；
The signal processing module includes that the input of the first P lines and output port, the input of the first N lines are defeated with output port, the 2nd P lines
Enter and output port and the input of the 2nd N lines and output port；The first P lines input is defeated with output port and the first N lines
Enter and constitutes data difference separated time pair, the 2nd P lines input and output port and the 2nd N lines input and output with output port
Port constitutes data difference separated time pair；The signal processing module can select access differential to quantity according to connection speed demand；
The RJ45 connectors include first network port and second network port；
The P line ends mouth is inputted with the first P lines and is connect with output port, the first P lines input and output port and institute
State termination power connection；The termination power is inputted with the 2nd P lines and is connect with output port；2nd P lines input with
Output port is connect by the high_voltage isolation circuit with the first network port；
The N line ends mouth is inputted with the first N lines and is connect with output port, the first N lines input and output port and institute
State termination power connection；The termination power is inputted with the 2nd N lines and is connect with output port；2nd N lines input with
Output port is connect by the high_voltage isolation circuit with second network port.
3. the PoE equipment without network transformer as claimed in claim 2, which is characterized in that the signal processing module also wraps
It includes：Lightning Protection circuit；
The termination power passes through the lightning Protection circuit and the 2nd P lines input and output port and the 2nd N lines
Input is connect with output port.
4. the PoE equipment without network transformer as claimed in claim 2, which is characterized in that the signal processing module also wraps
It includes：Common mode filtering circuit；
The common mode filtering circuit connects with the 2nd P lines input and output port and the 2nd N lines input with output port
It connects.
5. the PoE equipment without network transformer as claimed in claim 3, which is characterized in that the termination power is exchange coupling
Circuit is closed, the termination power includes：First capacitance and the second capacitance；
One end of first capacitance inputs with the first P lines and is connect with output port, and the other end of first capacitance is logical
The lightning Protection circuit is crossed to connect with the 2nd P lines input with output port；
One end of second capacitance inputs with the first N lines and is connect with output port, and the other end of second capacitance is logical
The lightning Protection circuit is crossed to connect with the 2nd N lines input with output port.
6. the PoE equipment without network transformer as claimed in claim 5, which is characterized in that the lightning Protection circuit includes：
First order lightning Protection circuit and second level lightning Protection circuit；The first order lightning Protection circuit includes：First resistor,
Two resistance and the first transient voltage suppressor diode；The second level lightning Protection circuit includes：3rd resistor, the 4th resistance and
Second transient voltage suppressor diode；
One end of the first resistor and first capacitance connection, the other end of the first resistor pass through the 3rd resistor
It inputs with the 2nd P lines and is connect with output port；
One end of the second resistance and second capacitance connection, the other end of the second resistance pass through the 4th resistance
It inputs with the 2nd N lines and is connect with output port；
One end of first transient voltage suppressor diode is connected between the second resistance and the 4th resistance, described
The other end of first transient voltage suppressor diode is connected between the first resistor and the 3rd resistor；
One end of second transient voltage suppression diode inputs with the 2nd P lines and is connect with output port, and described second
The other end of transient voltage suppressor diode is inputted with the 2nd N lines and is connect with output port.
7. the PoE equipment without network transformer as claimed in claim 6, which is characterized in that the first resistor, the second electricity
The resistance value of resistance, 3rd resistor and the 4th resistance is greater than or equal to 0.
8. the PoE equipment without network transformer as claimed in claim 4, which is characterized in that the common mode filtering circuit includes：
First inductance, the second inductance, the 5th resistance, third capacitance and the 4th capacitance；
One end of first inductance inputs with the 2nd P lines and is connect with output port, and the other end of first inductance is logical
Second inductance is crossed to connect with the 2nd N lines input with output port；
One end of 5th resistance is connected between first inductance and second inductance, the 5th resistance it is another
End passes through the third capacity earth；4th capacitance is connected in parallel with the third capacitance.
9. such as PoE equipment of the claim 2-4 any one of them without network transformer, which is characterized in that the high_voltage isolation
Circuit includes：5th capacitance, the 6th capacitance, third inductance and the 4th inductance；
One end of 5th capacitance and the 2nd P lines are inputted to be connect with output port, the other end of the 5th capacitance and
The first network port connection；
One end of 6th capacitance and the 2nd N lines are inputted to be connect with output port, the other end of the 6th capacitance and
Second network port connection；
One end of the third inductance is connect with the first network port, and the other end of the third inductance passes through the described 4th
Inductance is connect with second network port；
Connecting pin and the power input of PoE power supply unit or the electricity of power receiving equipment of the third inductance with the 4th inductance
Source output connection.
10. the PoE equipment without network transformer as claimed in claim 3, which is characterized in that the termination power is direct current coupling
Circuit is closed, the termination power includes：6th resistance and the 7th resistance；
One end of 6th resistance inputs with the first P lines and is connect with output port, the other end of the 6th resistance
It is inputted with the 2nd P lines by the lightning Protection circuit and is connect with output port；
One end of 7th resistance inputs with the first N lines and is connect with output port, and the other end of the 7th resistance is logical
The lightning Protection circuit is crossed to connect with the 2nd N lines input with output port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720947205.XU CN207853914U (en) | 2017-07-31 | 2017-07-31 | PoE equipment without network transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720947205.XU CN207853914U (en) | 2017-07-31 | 2017-07-31 | PoE equipment without network transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207853914U true CN207853914U (en) | 2018-09-11 |
Family
ID=63425634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720947205.XU Active CN207853914U (en) | 2017-07-31 | 2017-07-31 | PoE equipment without network transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207853914U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107332675A (en) * | 2017-07-31 | 2017-11-07 | 博为科技有限公司 | PoE equipment without network transformer |
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2017
- 2017-07-31 CN CN201720947205.XU patent/CN207853914U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107332675A (en) * | 2017-07-31 | 2017-11-07 | 博为科技有限公司 | PoE equipment without network transformer |
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Address after: 314400 Room 201, building 2, No. 306, Gushui Road, Haining Economic Development Zone, Haining City, Jiaxing City, Zhejiang Province Patentee after: BIRTRONIX TECHNOLOGY CORPORATION Address before: 307, room 2, building 522, 314006 Asia Pacific Road, Nanhu District, Zhejiang, Jiaxing Patentee before: BIRTRONIX TECHNOLOGY CORPORATION |
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