CN206559376U - A kind of PoE powers separator - Google Patents
A kind of PoE powers separator Download PDFInfo
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- CN206559376U CN206559376U CN201720208220.2U CN201720208220U CN206559376U CN 206559376 U CN206559376 U CN 206559376U CN 201720208220 U CN201720208220 U CN 201720208220U CN 206559376 U CN206559376 U CN 206559376U
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- rectifier bridge
- poe
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- switching tube
- resistance
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Abstract
The utility model belongs to PoE power supply technique fields and powered separator, including network interface, PoE voltage cut-outs circuit and DC DC circuits there is provided a kind of PoE；The PoE voltage cut-outs circuit includes the first rectifier bridge D1, second rectifier bridge D2 and switching tube Q1, a pair of transmission interfaces connect the first rectifier bridge D1 two inputs in the network interface, a pair of transmission interfaces connect the second rectifier bridge D2 two inputs in the network interface, the first rectifier bridge D1 and the second rectifier bridge D2 common cathode are in parallel, the extreme resistance R2 through being sequentially connected in series of common cathode, backward dioded D3 connects switching tube Q1 grid, the first rectifier bridge D1 and the second rectifier bridge D2 common-anode are in parallel, common-anode termination switching tube Q1 source electrode, common anode extremely also connects switching tube Q1 grid through resistance R1, the grounded drain of switching tube.The utility model can power for multiple ethernet network terminals simultaneously, and its circuit structure is simple, and small volume, cost are low.
Description
Technical field
The utility model belongs to PoE power supply technique fields, and in particular to a kind of PoE powers separator.
Background technology
PoE is Power Over Etheernet abbreviation, and Chinese means " power supply technique based on ethernet line ", referred to
Be existing Ethernet wiring architecture it is without any changes in the case of, for be based partially on IP terminal device transmit
While data-signal, moreover it is possible to which the technology of dc source is provided for this kind equipment.PoE transmits data simultaneously using LAN to equipment
And electrical power, eliminate for each ethernet network terminal install power supply connection requirement of engineering, reduce for communicate and
The number of cables of power supply, thus use cost is reduced, the flexibility of terminal installation site is also improved, for engineering construction cloth
Line has great benefit.
At present, ethernet terminal species is various, and power demands are also inconsistent, such as existing network monitoring system, exists
The multiple terminal equipment based on web camera, these current terminal devices are in addition to web camera, and periphery is also infrared
The mini-plants such as lamp, indicator lamp, sound pick-up.
Existing PoE power isolation technics be each network terminal be required to an independent supplying channels be its confession
Electricity, so if in a network monitoring system, once terminal device quantity is excessive, PoE power supply unit demand mistakes will be caused
Amount, causes system data excessive, causes the unstable of system.And existing PoE cyclone separator arrangements of powering are complicated, it is required electrically
Element is more.
Utility model content
For the deficiency of problem above, the utility model provides a kind of PoE and powered separator, and the utility model can be simultaneously
Powered for multiple ethernet network terminals, and its circuit structure is simple, small volume, cost are low.
To achieve the above object, a kind of PoE of the utility model is powered separator, including the control of network interface, PoE voltages is opened
Powered-down road and DC-DC circuit, the PoE voltage cut-outs circuit obtain the direct current of PoE inputs and are transferred to DC-DC electricity
Road, the DC-DC circuit is exported to network-termination device after direct current is changed；
The PoE voltage cut-outs circuit includes the first rectifier bridge D1, the second rectifier bridge D2 and switching tube Q1, the net
A pair of transmission interfaces connect a pair of receiving interfaces in the first rectifier bridge D1 two inputs, the network interface and connect in network interface
Two rectifier bridge D2 two inputs, the first rectifier bridge D1 and the second rectifier bridge D2 common cathode are in parallel, and common cathode is extremely passed through
The resistance R2, the backward dioded D3 that are sequentially connected in series connect switching tube Q1 grid, the first rectifier bridge D1 and the second rectifier bridge D2
Common-anode it is in parallel, common-anode termination switching tube Q1 source electrode, common anode extremely also connects switching tube Q1 grid through resistance R1, switched
The grounded drain of pipe, common cathode is extremely as the output end of PoE voltage cut-out circuits.
Preferably, the DC-DC circuit includes the output termination of power conversion chip U1, PoE voltage cut-out circuit
Power conversion chip U1 power input, power conversion chip U1 inductance L1, resistance of the output switching terminal through being sequentially connected in series
R7 and resistance R8 ground connection, resistance R7 and resistance R8 common port output feedback signal give the amplifier of the power conversion chip U1
Node side.
Preferably, the model TPS54360 of the power conversion chip U1.
Preferably, the network interface is RJ45 Ethernet interfaces.
From such scheme, a kind of PoE of the utility model powers separator, the utility model can simultaneously for it is multiple with
The too net network terminal is powered, and its circuit structure is simple, small volume, and required electric components are less, and integrated level is high, cost is low.
Brief description of the drawings
In order to illustrate more clearly of the technical solution of the utility model, embodiment or prior art will be retouched below
The accompanying drawing used required in stating is briefly described.In all of the figs, similar element or part are general by similar attached
Icon note mark.In accompanying drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is the schematic block circuit diagram of the present embodiment；
Fig. 2 is the PoE voltage cut-out circuit structure diagrams of the present embodiment；
Fig. 3 is the DC-DC circuit and output circuit structure figure of the present embodiment.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.Following examples are only used for more
Product of the present utility model is clearly demonstrated, therefore is intended only as example, and protection of the present utility model can not be limited with this
Scope.
Embodiment：
A kind of PoE is present embodiments provided to power separator, as shown in FIG. 1 to 3, including network interface, PoE voltage controls
On-off circuit processed and DC-DC circuit, the PoE voltage cut-outs circuit obtain the direct current of PoE inputs and are transferred to DC-DC
Circuit, the DC-DC circuit is exported to network-termination device after direct current is changed；
As shown in Fig. 2 the PoE voltage cut-outs circuit includes the first rectifier bridge D1, the second rectifier bridge D2 and switch
A pair of transmission interfaces are connect in the first rectifier bridge D1 two inputs, the network interface a pair in pipe Q1, the network interface
Receiving interface connects the second rectifier bridge D2 two inputs, and the first rectifier bridge D1 and the second rectifier bridge D2 common cathode are simultaneously
Connection, resistance R2, backward dioded D3 of the common cathode extremely through being sequentially connected in series connects switching tube Q1 grid, the first rectifier bridge D1 and
Second rectifier bridge D2 common-anode is in parallel, and common-anode termination switching tube Q1 source electrode, common anode extremely also connects switching tube through resistance R1
Q1 grid, the grounded drain of switching tube, common cathode is extremely as the output end of PoE voltage cut-out circuits.The switching tube
Q1 model SSD30N10-70D.
As shown in figure 3, the DC-DC circuit includes power conversion chip U1TPS54360, PoE voltage cut-out circuit
Output termination power conversion chip U1 power input, power conversion chip U1 electricity of the output switching terminal through being sequentially connected in series
Feel L1, resistance R7 and resistance R8 to be grounded, resistance R7 and resistance R8 common port output feedback signal give the power conversion chip
U1 amplifier node end.
In the present embodiment, on the netting twine that PoE is transmitted, 15~60V direct currents are obtained by PoE voltage cut-outs circuit
Electricity, then by DC-DC circuit conversion output DC voltage (being typically 12V), powered to network-termination device.As shown in Fig. 2
D1, D2 are rectifier bridge, and 15~60V both positive and negative polarities are corrected, combined with resistance R2, resistance R1, diode D3 and switching tube Q1
PoE voltage cut-out circuits, switch control is carried out to DC-DC circuit, in PoE normal power supplies, and switch is just opened.Electric capacity
C1, electric capacity C2 are DC-DC circuit input filter capacitor, and resistance R3, resistance R4 are to the power conversion chip in DC-DC circuit
U1TPS54360 carries out enable control, and R5 controls TPS54360 switching frequency, and C3 is bootstrap capacitor, electric capacity C4, resistance R6, electricity
Hold the compensation circuit that C5 constitutes DC-DC, D4 is fly-wheel diode, and L1 is energy storage inductor, and electric capacity C6, electric capacity C7, electric capacity C8 are
Output filter capacitor, electric capacity C9, resistance R8, resistance R7 are constituted as output voltage circuit.
The present embodiment can not only power for multiple ethernet network terminals simultaneously, in actual applications without each network
Terminal reduces the quantity of its PoE power supply unit, reduces cost with a PoE power supply unit.Circuit knot of the present utility model
Structure is simple, small volume, and required electric components are less, and integrated level is high, cost is low.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should manage
Solution：Its technical scheme still described in foregoing embodiments is modified, or to which part or all technical characteristic
Carry out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from the utility model and respectively implement
The scope of example technical scheme, it all should cover among claim of the present utility model and the scope of specification.
Claims (4)
- The separator 1. a kind of PoE powers, it is characterised in that：Including network interface, PoE voltage cut-outs circuit and DC-DC electricity Road, the PoE voltage cut-outs circuit obtains the direct current of PoE inputs and is transferred to DC-DC circuit, the DC-DC circuit Exported after direct current is changed to network-termination device；The PoE voltage cut-outs circuit includes the first rectifier bridge D1, the second rectifier bridge D2 and switching tube Q1, and the network connects A pair of transmission interfaces connect a pair of receiving interfaces in the first rectifier bridge D1 two inputs, the network interface to connect second whole in mouthful Stream bridge D2 two inputs, the first rectifier bridge D1 and the second rectifier bridge D2 common cathode are in parallel, and common cathode is extremely through successively Resistance R2, the backward dioded D3 of series connection connect switching tube Q1 grid, and the first rectifier bridge D1's and the second rectifier bridge D2 is total to Anode is in parallel, and common-anode termination switching tube Q1 source electrode, common anode extremely also connects switching tube Q1 grid through resistance R1, switching tube Grounded drain, common cathode is extremely as the output end of PoE voltage cut-out circuits.
- The separator 2. a kind of PoE according to claim 1 powers, it is characterised in that：The DC-DC circuit turns including power supply Change the output termination power conversion chip U1 of chip U1, PoE voltage cut-out circuit power input, power conversion chip Inductance L1 of the U1 output switching terminal through being sequentially connected in series, resistance R7 and resistance R8 ground connection, resistance R7 and resistance R8 common port are defeated Go out the amplifier node end for feeding back signal to the power conversion chip U1.
- The separator 3. a kind of PoE according to claim 2 powers, it is characterised in that：The type of the power conversion chip U1 Number be TPS54360.
- The separator 4. a kind of PoE according to claim 1 powers, it is characterised in that：The network interface is RJ45 ether Network interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720208220.2U CN206559376U (en) | 2017-03-03 | 2017-03-03 | A kind of PoE powers separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720208220.2U CN206559376U (en) | 2017-03-03 | 2017-03-03 | A kind of PoE powers separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206559376U true CN206559376U (en) | 2017-10-13 |
Family
ID=60363200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720208220.2U Active CN206559376U (en) | 2017-03-03 | 2017-03-03 | A kind of PoE powers separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206559376U (en) |
-
2017
- 2017-03-03 CN CN201720208220.2U patent/CN206559376U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000 Baoan District Shiyan street, Baoan District, Shenzhen, Guangdong, Luo Luo Community Road 2, B five five stories, four or five stories. Patentee after: Shenzhen superior technical Co., Ltd. Address before: 518000 West building, 5 floor, M-8 building, Nanshan District high tech Industrial Park, Shenzhen, Guangdong Patentee before: Shenzhen UTP Electronic Co., Ltd. |