CN207339642U - A kind of POE interchangers DC power supply - Google Patents
A kind of POE interchangers DC power supply Download PDFInfo
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- CN207339642U CN207339642U CN201721454109.8U CN201721454109U CN207339642U CN 207339642 U CN207339642 U CN 207339642U CN 201721454109 U CN201721454109 U CN 201721454109U CN 207339642 U CN207339642 U CN 207339642U
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Abstract
The utility model discloses a kind of POE interchangers DC power supply, including sequentially connected power supply module, power supply delay startup module.Power supply module obtains direct current and filters out the clutter in direct current, and the direct current of safety is provided for power supply delay startup module.Power supply delay startup module is used to carry out delay startup to POE interchangers.The DC power supply filters out surge, High-frequency Interference by power supply module, POE interchangers is reached more reliable barrier propterty, prolongs the service life, is hardly damaged；And steady, safety is powered on by power supply delay startup module POE interchangers.
Description
Technical field
It the utility model is related to electronic technology field, more particularly to a kind of POE interchangers DC power supply.
Background technology
POE (Power Over Ethernet) interchanger is typical Power over Ethernet system.In distribution cabinet retain with
Too network switch equipment, power supply is provided with a charged for twisted-pair feeder of the electrical hub (Midspan HUB) to LAN.
The end of twisted-pair feeder, the power supply are used for driving phone, wireless access point, camera and other equipment.To avoid powering off, can select
One UPS.
POE (Power Over Ethernet) refers to not making in existing Ethernet Cat.5 wirings architecture any
In the case of change, for some IP-based terminals (such as IP telephone machine, wireless local network connecting point AP, web camera)
While transmitting data-signal, moreover it is possible to which kind equipment provides the technology of direct current supply for this.POE technologies can ensure existing structure
Ensure the normal operation of existing network while connecting up safe, reduce cost to greatest extent.
The DC power supply protective capacities of existing POE interchangers is poor, can not be tested by EMC, be only applicable to interior, if
For outdoor adverse circumstances, protection is inadequate, is easily damaged；And powered on moment may produce electric spark, this quick voltage
Impact may damage device.
Utility model content
In view of the deficiencies of the prior art, the utility model proposes a kind of POE interchangers DC power supply, it is intended to solves existing
The problem of some POE interchangers DC power supply Supply Security is poor.
To achieve these goals, technical solutions of the utility model are as follows：
A kind of POE interchangers DC power supply, including sequentially connected power supply module, power supply delay startup module.It is described
Power supply module obtains direct current and filters out the clutter in the direct current, and safety is provided for the power supply delay startup module
Direct current.The power supply delay startup module is used to carry out delay startup to POE interchangers.
Further, the power supply module includes sequentially connected power input port, over-current protecting unit, primary
Surge filters out unit, preceding stage high frequency interference signal filters out unit, rear class surge High-frequency Interference filters out unit.
Further, the power supply delay startup module includes anti-reverse unit, prime filter unit, charhing unit, power supply
Switch, rear class filtering and storage unit, output port of power source.Before the anti-reverse unit is connected on the prime filter unit
End；The prime filter unit is connected with the charhing unit；The power switch be connected to the prime filter unit with
Between the rear class filtering and the storage unit；The charhing unit is connected with the control terminal of the power switch；It is described
Output port of power source is used to connect POE interchangers.
Further, the primary surge filters out unit and includes varistor RV1, RV2, RV3, anti-thunder tube AR1.Pressure-sensitive electricity
Resistance RV1 is connected across between the cathode output end and cathode output end of the over-current protecting unit.The over-current protecting unit is just
Pole output terminal is grounded by varistor RV3, anti-thunder tube AR1 successively；The cathode output end of the over-current protecting unit passes through successively
Cross varistor RV2, anti-thunder tube AR1 ground connection.
Further, the preceding stage high frequency interference signal filters out unit and includes capacitance C1, C2, C3, C4, C5, C6.Capacitance
C1, C5 are connected across the primary surge and filter out between the cathode output end of unit and cathode output end respectively.The primary surge
The cathode output end for filtering out unit is connected by capacitance C3, C2 with cathode output end successively, and capacitance C3 is public with capacitance C2's
Node is grounded.The cathode output end that the primary surge filters out unit is grounded by capacitance C6；The primary surge filters out unit
Cathode output end by capacitance C4 be grounded.
Further, the rear class surge High-frequency Interference filter out unit include common mode inductance L1, inductance L2, L3, capacitance C7,
C8, C9, C10, TVS pipe D1.The preceding stage high frequency interference signal filters out unit by common mode inductance L1 and the power supply delay startup
Module is connected.The cathode output end of common mode inductance L1 is connected by inductance L2 with the power supply delay startup module, common mode electricity
The cathode output end of sense L1 is connected by inductance L3 with the power supply delay startup module.The cathode output end of common mode inductance L1 according to
Secondary to be connected by capacitance C8, C7 with cathode output end, the common node of capacitance C8 and capacitance C7 is grounded.Capacitance C9 is connected across altogether
Between the cathode output end and cathode output end of mould inductance L1.Capacitance C10, TVS pipe D1 are connected across the output terminal of inductance L2 respectively
Between the output terminal of inductance L3.
Further, the anti-reverse unit includes diode D2.The cathode of diode D2 and the power supply module
Cathode output end be connected.The anode of diode D2 is connected with the power switch.
Further, the charhing unit includes resistance R1, R3, capacitance C13.The cathode output of the prime filter unit
End is connected by resistance R3, R1 with cathode output end successively.Resistance R3 is connected with the common node of resistance R1 with capacitance C13
Connect.Capacitance C13 is connected with the control terminal of the power switch.
Further, the power switch includes N-type metal-oxide-semiconductor Q2, voltage-stabiliser tube D3, resistance R2, capacitance C14.The charging
The output terminal of unit is connected with the grid of N-type metal-oxide-semiconductor Q2；The anode of the source electrode of N-type metal-oxide-semiconductor Q2 and the prime filter unit
Output terminal is connected；The drain electrode of N-type metal-oxide-semiconductor Q2 is connected with the negative input of the rear class filtering and storage unit.Voltage stabilizing
Pipe D3 is connected between the grid and source electrode of N-type metal-oxide-semiconductor Q2.The drain electrode of N-type metal-oxide-semiconductor Q2 is successively by resistance R2, capacitance C14 connections
To source electrode.
Further, the rear class filtering and storage unit include capacitance C15, C16, some magnetic bead FB being in parallel.Electricity
Hold C15, C16 to be connected across respectively between the electrode input end and negative input of the output port of power source.Magnetic bead FB is connected to
On the electrode input end of the output port of power source.
The beneficial effects of the utility model：
The DC power supply filters out surge, High-frequency Interference by power supply module, POE interchangers is reached more reliable and prevents
Performance is protected, prolongs the service life, is hardly damaged；And steady, safety is powered on by power supply delay startup module POE interchangers.
This DC power supply can be applied within 24 mouthfuls in POE interchangers, 8 mouthfuls, 16 mouthfuls etc. can, versatility is stronger.
Brief description of the drawings
Fig. 1 is the circuit block diagram of the utility model.
Fig. 2 is the circuit diagram of power supply module 2 in Fig. 1.
Fig. 3 is the circuit diagram of power supply delay startup module 3 in Fig. 1.
Wherein, the reference numeral of Fig. 1 to Fig. 3 is：DC power supplier 1, power supply module 2, power supply delay startup module
3；Power input port 21, over-current protecting unit 22, primary surge filter out unit 23, preceding stage high frequency interference signal filters out unit
24th, rear class surge High-frequency Interference filters out unit 25；Anti-reverse unit 31, prime filter unit 32, charhing unit 33, power switch
34th, rear class filtering and storage unit 35, output port of power source 36.
Embodiment
With reference to the accompanying drawings and examples, the utility model is expanded on further.
As shown in Figure 1, a kind of POE interchangers DC power supply, including DC power supplier 1, power supply module 2, power supply
Delay startup module 3.DC power supplier 1, power supply module 2, power supply delay startup module 3 are sequentially connected.
DC power supplier 1 exports direct current for power supply module 2.Power supply module 2 filters out miscellaneous in direct current
Ripple, safe direct current is provided for power supply delay startup module 3.Power supply delay startup module 3 is used to carry out POE interchangers slow open
Dynamic, the moment electric spark for preventing from powering on causes to damage to POE interchangers.
As shown in Fig. 2, power supply module 2 include sequentially connected power input port 21, over-current protecting unit 22, just
Surge filters out unit 23 to level, preceding stage high frequency interference signal filters out unit 24, rear class surge High-frequency Interference filters out unit 25.
Specifically, power input port 21 inputs the direct current of 48V, maximum current 10A.
Specifically, over-current protecting unit 22 includes fuse FU1, FU2.Fuse FU1, FU2 are connected on power input respectively
On the cathode port of port 21, anode port, overcurrent protection is provided for POE interchangers.
Specifically, primary surge filters out unit 23 and includes varistor RV1, RV2, RV3, anti-thunder tube AR1.Varistor
RV1 is connected across between the cathode output end and cathode output end of over-current protecting unit 22.The cathode output of over-current protecting unit 22
End is grounded by varistor RV3, anti-thunder tube AR1 successively.The cathode output end of over-current protecting unit 22 passes through pressure-sensitive electricity successively
Hinder RV2, anti-thunder tube AR1 ground connection.
Primary surge filters out unit 23 and is mainly used for high current of releasing.Wherein, varistor RV1 is used for surge differential mode of releasing
Interference, varistor RV2, RV3, anti-thunder tube AR1 are used for surge common mode interference of releasing.
Specifically, preceding stage high frequency interference signal filters out unit 24 and includes capacitance C1, C2, C3, C4, C5, C6.Capacitance C1, C5
It is connected across respectively between cathode output end and cathode output end that primary surge filters out unit 23.Primary surge filters out unit 23
Cathode output end is connected by capacitance C3, C2 with cathode output end successively, and the common node of capacitance C3 and capacitance C2 is grounded.Just
The cathode output end that level surge filters out unit 23 is grounded by capacitance C6；The cathode output end that primary surge filters out unit 23 passes through
Capacitance C4 is grounded.
Wherein, capacitance C1 and C5 is used to filter out differential mode High-frequency Interference, remaining capacitance is used for filtering common mode High-frequency Interference.Prime
High-frequency interferencing signal, which filters out unit 24, can effectively reduce Conduction Interference.
Specifically, rear class surge High-frequency Interference filter out unit 25 include common mode inductance L1, inductance L2, L3, capacitance C7, C8,
C9, C10, TVS pipe D1.
Preceding stage high frequency interference signal filters out unit 24 and is connected by common mode inductance L1 with power supply delay startup module 3.Common mode
The cathode output end of inductance L1 is connected by inductance L2 with power supply delay startup module 3, the cathode output end warp of common mode inductance L1
Inductance L3 is crossed with power supply delay startup module 3 to be connected.The cathode output end of common mode inductance L1 passes through capacitance C8, C7 and anode successively
Output terminal is connected, and the common node of capacitance C8 and capacitance C7 is grounded.Capacitance C9 is connected across the cathode output end of common mode inductance L1
Between cathode output end.Capacitance C10, TVS pipe D1 are connected across between the output terminal of inductance L2 and the output terminal of inductance L3 respectively.
Common mode inductance L1, inductance L2, L3 composition inductance network, the common mode interference and differential mode for being mainly used for suppressing residual voltage are done
Disturb, because primary surge filters out unit 23 and can not all filter out surging signal.Capacitance C7, C8, C9, C10 filter out residual voltage height again
Frequency disturbs.Residual voltage can be reduced to 58V or so by TVS pipe D1, so as to ensure that the circuit behind output terminal V1-, V1+ is not damaged
It is bad.
As shown in figure 3, power supply delay startup module 3 include anti-reverse unit 31, prime filter unit 32, charhing unit 33,
Power switch 34, rear class filtering and storage unit 35, output port of power source 36.
Anti-reverse unit 31 is connected on the front end of prime filter unit 32；Prime filter unit 32 is connected with charhing unit 33
Connect；Power switch 34 is connected between prime filter unit 32 and rear class filtering and storage unit 35；Charhing unit 33 and power supply
The control terminal of switch 34 is connected；Output port of power source 36 is used to connect POE interchangers.
Specifically, anti-reverse unit 31 includes diode D2.The cathode of diode D2 and the anode of power supply module 2 are defeated
Outlet is connected.The anode of diode D2 is connected with power switch 34.
Diode D2 is reversal connection in order to prevent, once input voltage is reversed, diode D2 reversely ends.
Specifically, prime filter unit 32 includes capacitance C11, C12.Capacitance C11, C12 are connected across power supply mould respectively
Between the cathode output end and cathode output end of block 2.
Capacitance C12 is electrolytic capacitor.Capacitance C11, C12 respectively to power supply module 2 export voltage be filtered and
Voltage stabilizing.
Specifically, charhing unit 33 includes resistance R1, R3, capacitance C13.The cathode output end of prime filter unit 32 is successively
It is connected by resistance R3, R1 with cathode output end.Resistance R3 is connected with the common node of resistance R1 with capacitance C13.Capacitance
C13 is connected with the control terminal of power switch 34.
Resistance R3, R1 are used for partial pressure, resistance R3 and capacitance C13 composition RC charging circuits, when the charging voltage of capacitance C13 is high
When the conducting voltage of power switch 34, power switch 34 turns on, and 48V voltages can be exported normally.
Specifically, power switch 34 includes N-type metal-oxide-semiconductor Q2, voltage-stabiliser tube D3, resistance R2, capacitance C14.Charhing unit 33
Output terminal is connected with the grid of N-type metal-oxide-semiconductor Q2；The source electrode of N-type metal-oxide-semiconductor Q2 and the cathode output end phase of prime filter unit 32
Connection；The drain electrode of N-type metal-oxide-semiconductor Q2 is connected with the negative input of rear class filtering and storage unit 35.Voltage-stabiliser tube D3 is connected on N-type
Between the grid and source electrode of metal-oxide-semiconductor Q2.The drain electrode of N-type metal-oxide-semiconductor Q2 is connected to source electrode by resistance R2, capacitance C14 successively.
When the charging voltage of charhing unit 33 is higher than the conducting voltage of N-type metal-oxide-semiconductor Q2, the drain electrode of N-type metal-oxide-semiconductor Q2 and source
Pole mutual conduction, 48V voltages can be exported normally.
Specifically, rear class filtering and storage unit 35 include capacitance C15, C16, some magnetic bead FB being in parallel.Capacitance
C15, C16 are connected across between the electrode input end and negative input of output port of power source 36 respectively.Magnetic bead FB is connected to power supply
On the electrode input end of output port 36.
Some magnetic bead FB being in parallel are used for High-frequency Interference on filtering circuit.Capacitance C15, C16 partial pressure are used for output electricity
Pressure is filtered and energy stores.It is preferred that capacitance C16 is electrolytic capacitor.Because POE power is larger, hold so capacitance C16 is selected
Larger capacitance is measured, to ensure to stablize to give POE power supply for exchange.
Above-described is only the preferred embodiment of the utility model, and the utility model is not limited to above example.Can
With understand, those skilled in the art directly export or associate on the premise of the basic conception of the utility model is not departed from its
It is improved and change is considered as being included within the scope of protection of this utility model.
Claims (10)
- A kind of 1. POE interchangers DC power supply, it is characterised in that：Including sequentially connected power supply module, power supply delay startup module；The power supply module obtains direct current and filters out the clutter in the direct current, is carried for the power supply delay startup module For the direct current of safety；The power supply delay startup module is used to carry out delay startup to POE interchangers.
- 2. POE interchangers DC power supply according to claim 1, it is characterised in that：The power supply module includes sequentially connected power input port, over-current protecting unit, primary surge filter out unit, Preceding stage high frequency interference signal filters out unit, rear class surge High-frequency Interference filters out unit.
- 3. POE interchangers DC power supply according to claim 1, it is characterised in that：The power supply delay startup module includes anti-reverse unit, prime filter unit, charhing unit, power switch, rear class filtering And storage unit, output port of power source；The anti-reverse unit is connected on the front end of the prime filter unit；The prime filter unit and the charhing unit phase Connection；The power switch is connected between the prime filter unit and the rear class filtering and the storage unit；It is described Charhing unit is connected with the control terminal of the power switch；The output port of power source is used to connect POE interchangers.
- 4. POE interchangers DC power supply according to claim 2, it is characterised in that：The primary surge filters out unit and includes varistor RV1, RV2, RV3, anti-thunder tube AR1；Varistor RV1 is connected across between the cathode output end and cathode output end of the over-current protecting unit；The cathode output end of the over-current protecting unit is grounded by varistor RV3, anti-thunder tube AR1 successively；The overcurrent is protected The cathode output end for protecting unit is grounded by varistor RV2, anti-thunder tube AR1 successively.
- 5. POE interchangers DC power supply according to claim 2, it is characterised in that：The preceding stage high frequency interference signal filters out unit and includes capacitance C1, C2, C3, C4, C5, C6；Capacitance C1, C5 are connected across the primary surge and filter out between the cathode output end of unit and cathode output end respectively；The cathode output end that the primary surge filters out unit is connected by capacitance C3, C2 with cathode output end successively, capacitance The common node of C3 and capacitance C2 is grounded；The cathode output end that the primary surge filters out unit is grounded by capacitance C6；The primary surge filters out the anode of unit Output terminal is grounded by capacitance C4.
- 6. POE interchangers DC power supply according to claim 2, it is characterised in that：The rear class surge High-frequency Interference filters out unit and includes common mode inductance L1, inductance L2, L3, capacitance C7, C8, C9, C10, TVS Pipe D1；The preceding stage high frequency interference signal filters out unit and is connected by common mode inductance L1 with the power supply delay startup module；The cathode output end of common mode inductance L1 is connected by inductance L2 with the power supply delay startup module, and common mode inductance L1's is negative Pole output terminal is connected by inductance L3 with the power supply delay startup module；The cathode output end of common mode inductance L1 is connected by capacitance C8, C7 with cathode output end successively, capacitance C8 and capacitance C7 Common node ground connection；Capacitance C9 is connected across between the cathode output end and cathode output end of common mode inductance L1；Capacitance C10, TVS pipe D1 are connected across between the output terminal of inductance L2 and the output terminal of inductance L3 respectively.
- 7. POE interchangers DC power supply according to claim 3, it is characterised in that：The anti-reverse unit includes diode D2；The cathode of diode D2 is connected with the cathode output end of the power supply module；The anode of diode D2 is connected with the power switch.
- 8. POE interchangers DC power supply according to claim 3, it is characterised in that：The charhing unit includes resistance R1, R3, capacitance C13；The cathode output end of the prime filter unit is connected by resistance R3, R1 with cathode output end successively；Resistance R3 is connected with the common node of resistance R1 with capacitance C13；Capacitance C13 is connected with the control terminal of the power switch.
- 9. POE interchangers DC power supply according to claim 3, it is characterised in that：The power switch includes N-type metal-oxide-semiconductor Q2, voltage-stabiliser tube D3, resistance R2, capacitance C14；The output terminal of the charhing unit is connected with the grid of N-type metal-oxide-semiconductor Q2；The source electrode of N-type metal-oxide-semiconductor Q2 is filtered with the prime The cathode output end of ripple unit is connected；The drain electrode of N-type metal-oxide-semiconductor Q2 and the negative input of the rear class filtering and storage unit It is connected；Voltage-stabiliser tube D3 is connected between the grid and source electrode of N-type metal-oxide-semiconductor Q2；The drain electrode of N-type metal-oxide-semiconductor Q2 is connected to source electrode by resistance R2, capacitance C14 successively.
- 10. POE interchangers DC power supply according to claim 3, it is characterised in that：The rear class filtering and storage unit include capacitance C15, C16, some magnetic bead FB being in parallel；Capacitance C15, C16 are connected across between the electrode input end and negative input of the output port of power source respectively；Magnetic bead FB is connected on the electrode input end of the output port of power source.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721454109.8U CN207339642U (en) | 2017-11-03 | 2017-11-03 | A kind of POE interchangers DC power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721454109.8U CN207339642U (en) | 2017-11-03 | 2017-11-03 | A kind of POE interchangers DC power supply |
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| CN207339642U true CN207339642U (en) | 2018-05-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617039A (en) * | 2018-11-15 | 2019-04-12 | 华为技术有限公司 | Power receiving equipment and Power over Ethernet system |
| CN110505538A (en) * | 2019-08-26 | 2019-11-26 | 深圳市三旺通信股份有限公司 | A kind of 8 mouthfuls of gigabit double frequency high-power wireless interchangers of intrinsic safety type |
| CN113824088A (en) * | 2021-09-29 | 2021-12-21 | 深圳市智微智能科技股份有限公司 | Input power supply protection circuit and device of direct current type POE switch |
| CN113904316A (en) * | 2021-10-27 | 2022-01-07 | 江苏嘉擎信息技术有限公司 | Input power supply protection circuit for mainboard equipment |
-
2017
- 2017-11-03 CN CN201721454109.8U patent/CN207339642U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617039A (en) * | 2018-11-15 | 2019-04-12 | 华为技术有限公司 | Power receiving equipment and Power over Ethernet system |
| CN110505538A (en) * | 2019-08-26 | 2019-11-26 | 深圳市三旺通信股份有限公司 | A kind of 8 mouthfuls of gigabit double frequency high-power wireless interchangers of intrinsic safety type |
| CN110505538B (en) * | 2019-08-26 | 2021-08-24 | 深圳市三旺通信股份有限公司 | Intrinsic safety type 8-port kilomega dual-frequency high-power wireless switch |
| CN113824088A (en) * | 2021-09-29 | 2021-12-21 | 深圳市智微智能科技股份有限公司 | Input power supply protection circuit and device of direct current type POE switch |
| CN113904316A (en) * | 2021-10-27 | 2022-01-07 | 江苏嘉擎信息技术有限公司 | Input power supply protection circuit for mainboard equipment |
| CN113904316B (en) * | 2021-10-27 | 2023-11-21 | 江苏嘉擎信息技术有限公司 | Input power supply protection circuit for main board equipment |
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