CN106877694A - A kind of technical grade communication equipment supply unit - Google Patents
A kind of technical grade communication equipment supply unit Download PDFInfo
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- CN106877694A CN106877694A CN201510919992.2A CN201510919992A CN106877694A CN 106877694 A CN106877694 A CN 106877694A CN 201510919992 A CN201510919992 A CN 201510919992A CN 106877694 A CN106877694 A CN 106877694A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/125—Avoiding or suppressing excessive transient voltages or currents
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0083—Converters characterised by their input or output configuration
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of technical grade communication equipment supply unit, including power input unit, Overvoltage protecting unit, rectification unit, over-current protecting unit, first filter unit, first voltage regulation unit, second filter unit and the second voltage regulation unit, power input unit include for first via direct current or exchange input first via input circuit with for the second road direct current or exchange be input into No. second input circuit, Overvoltage protecting unit includes the first overvoltage crowbar and the second overvoltage crowbar, rectification unit includes the first rectification circuit and the second rectification circuit, first via input circuit is connected by the first overvoltage crowbar with one end of the first rectification circuit, No. second input circuit is connected by the second overvoltage crowbar with one end of second rectification circuit.Implement technical grade communication equipment supply unit of the invention, have the advantages that：Can carry out that dual power supply Hot Spare, cost are relatively low, possess wide-range voltage and access, environmental suitability it is stronger.
Description
Technical field
The present invention relates to field of power supplies, more particularly to a kind of technical grade communication equipment supply unit.
Background technology
Technical grade communication equipment has requirement very high to reliability and environmental suitability, its power requirement dual power supply
Hot Spare, and the access of AC and DC power supply can be simultaneously adapted to, with input voltage range very wide
(AC/DC9V-60V), operating ambient temperature is -40 DEG C~85 DEG C.Electricity used by current technical grade communication equipment
Source scheme is generally single supply, does not possess warm standby function, greatly reduces the reliability of technical grade communication equipment.
That supports dual power supply can only then support single power supply, it is impossible to while AC and DC is supported, can not hybrid junction.
And be substantially all and use modular power source, than larger, cost is higher, does not possess wide-range voltage and connects for heating
Enter, environmental suitability is poor, particularly work failure rate is higher in high temperature environments.
The content of the invention
The technical problem to be solved in the present invention is, for prior art it is above-mentioned be unable to dual power supply Hot Spare,
Cost is higher, do not possess wide-range voltage accesses, the defect that environmental suitability is poor, there is provided Yi Zhongneng
Carry out that dual power supply Hot Spare, cost are relatively low, possess wide-range voltage and access, the work that environmental suitability is stronger
Industry level communication equipment supply unit.
The technical solution adopted for the present invention to solve the technical problems is：Construct a kind of technical grade communication equipment electricity
Source device, including power input unit, Overvoltage protecting unit, rectification unit, over-current protecting unit, first
Filter unit, the first voltage regulation unit, the second filter unit and the second voltage regulation unit, the power input unit
Including for first via direct current or the first via input circuit of exchange input with for the second road direct current or exchange defeated
No. second input circuit for entering, the Overvoltage protecting unit includes that the first overvoltage crowbar and the second overvoltage are protected
Protection circuit, the rectification unit includes the first rectification circuit and the second rectification circuit, the first via input electricity
Road is connected by first overvoltage crowbar with one end of first rectification circuit, and second road is defeated
Enter circuit to be connected with one end of second rectification circuit by second overvoltage crowbar, described first
The other end of the other end of rectification circuit and second rectification circuit passes through the over-current protecting unit and institute
One end connection of the first filter unit is stated, the other end of first filter unit is by the first voltage stabilizing list
First one end with second filter unit is connected, and the other end of second filter unit is steady with described second
One end connection of unit is pressed, second voltage regulation unit is respectively used to output and meets different chip realities including multiple
Border uses the mu balanced circuit of voltage.
In technical grade communication equipment supply unit of the present invention, the power input unit uses six pin
Plug-in type connection terminal, the first pin of the six pin plug-in type connection terminal is first via direct current input
Positive terminal or the first via exchange input fire line terminal, the second of the six pin plug-in type connection terminal draws
Pin is the negative terminal of the first via direct current input or the zero terminal of first via exchange input, six pin
5th pin of plug-in type connection terminal is that the positive terminal of second road direct current input or the second tunnel exchange defeated
The fire line terminal for entering, the 6th pin of the six pin plug-in type connection terminal is second road direct current input
Negative terminal or the zero terminal of the second tunnel exchange input.
In technical grade communication equipment supply unit of the present invention, first overvoltage crowbar includes
8th transient voltage suppressor diode, the 9th light emitting diode and the 38th resistance, second overvoltage are protected
Protection circuit includes the 28th transient voltage suppressor diode, the 25th light emitting diode and the 43rd electricity
Resistance, one end of the 8th transient voltage suppressor diode is drawn with the first of the six pin plug-in type connection terminal
Pin is connected, the other end and the six pin plug-in type connection terminal of the 8th transient voltage suppressor diode
Second pin is connected, and the anode of the 9th light emitting diode is connected with first rectification circuit, and described the
The negative electrode of nine light emitting diodes passes through the 38th resistance and the second of the six pin plug-in type connection terminal
Pin is connected, and one end of the 28th transient voltage suppressor diode connects with the six pin plug-in respectively
The anode connection of the 5th pin and the 25th light emitting diode of line terminals, the 28th transient voltage
The other end for suppressing diode is connected with the 6th pin of the six pin plug-in type connection terminal, and the described 20th
The negative electrode of five light emitting diodes is connected by the 43rd resistance with second rectification circuit.
In technical grade communication equipment supply unit of the present invention, first rectification circuit includes the 7th
Commutation diode, the 11st commutation diode, the 20th commutation diode and the 23rd commutation diode,
The anode of the 7th commutation diode and the anode of the 20th commutation diode are grounded, the 7th rectification
The anode of the negative electrode of diode and the 11st commutation diode connects with the anode of the 9th light emitting diode
Connect, the negative electrode of the 20th commutation diode and the anode of the 23rd commutation diode with six pin
The second pin connection of plug-in type connection terminal, the negative electrode of the 11st commutation diode and the 23rd whole
The one end with the over-current protecting unit of negative electrode for flowing diode be connected, and second rectification circuit includes the
24 commutation diodes, the 26th commutation diode, the 27th commutation diode and the 29th are whole
Stream diode, the anode of the 24th commutation diode and the anode of the 27th commutation diode connect
Ground, the negative electrode of the 24th commutation diode and the anode of the 26th commutation diode are with described the
The anode connection of 25 light emitting diodes, the negative electrode of the 27th commutation diode and the 29th whole
Flow sixth pin of the anode of diode with the six pin plug-in type connection terminal to be connected, the described 26th
The negative electrode of the negative electrode of commutation diode and the 29th commutation diode with one end of the over-current protecting unit
Connection.
In technical grade communication equipment supply unit of the present invention, first filter unit includes the 4th
17 electrochemical capacitors and the 46th magnetizing mediums electric capacity, the positive pole of the 47th electrochemical capacitor and described
The other end of the one end of 46 magnetizing mediums electric capacity with the over-current protecting unit is connected, and the described 47th
The other end of the negative pole of electrochemical capacitor and the 46th magnetizing mediums electric capacity is grounded.
In technical grade communication equipment supply unit of the present invention, first voltage regulation unit includes switch
Lowering and stabilizing blood pressure chip, the first pin of the switch buck voltage stabilizing chip is another with the over-current protecting unit
End connection, the second pin output 5V voltages of the switch buck voltage stabilizing chip.
In technical grade communication equipment supply unit of the present invention, second filter unit includes second
11 diodes, inductance, the 48th electric capacity, the 49th electric capacity, the 51st electric capacity and the 52nd
Electric capacity, the second pin of the switch buck voltage stabilizing chip is connected with the negative electrode of the 21st diode,
The plus earth of the 21st diode, the second pin of the switch buck voltage stabilizing chip also with it is described
One end connection of inductance, the 48th electric capacity, the 49th electric capacity, the 51st electric capacity and the 50th
Two electric capacity are in parallel, and one end in parallel is connected with the other end of the inductance, other end ground connection in parallel.
In technical grade communication equipment supply unit of the present invention, the multiple in second voltage regulation unit
Mu balanced circuit is respectively 3.3V mu balanced circuits, 2.5V mu balanced circuits, 1.8V mu balanced circuits, 1.2V voltage stabilizings electricity
Road and 1.0V mu balanced circuits, the 3.3V mu balanced circuits, 2.5V mu balanced circuits, 1.8V mu balanced circuits, 1.2V
Mu balanced circuit and 1.0V mu balanced circuits are connected with the second filter unit.
In technical grade communication equipment supply unit of the present invention, the 3.3V mu balanced circuits, 2.5V are steady
Volt circuit, 1.8V mu balanced circuits, 1.2V mu balanced circuits and 1.0V mu balanced circuits are switched including MP2482 types
Voltage stabilizing chip.
In technical grade communication equipment supply unit of the present invention, the over-current protecting unit is using fast disconnected
Formula auto-instauration fuse.
Implement technical grade communication equipment supply unit of the invention, have the advantages that：Due to using electricity
Source input block, Overvoltage protecting unit, rectification unit, over-current protecting unit, the first filter unit, first
Voltage regulation unit, the second filter unit and the second voltage regulation unit, power input unit include being used for first via direct current
The first via input circuit of exchange input with for the second road direct current or exchange input the input of the second tunnel it is electric
Road, the second voltage regulation unit includes that multiple is respectively used to export the voltage stabilizing for meeting the different actually used voltages of chip electricity
Road, so it can be carried out, dual power supply Hot Spare, cost are relatively low, possess wide-range voltage is accessed, environment is adapted to
Property is stronger.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to implementing
Example or the accompanying drawing to be used needed for description of the prior art are briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation in technical grade communication equipment supply unit one embodiment of the present invention；
Fig. 2 is power input unit, Overvoltage protecting unit, rectification unit, overcurrent protection in the embodiment
The circuit theory diagrams of unit, the first filter unit, the first voltage regulation unit and the second filter unit；
Fig. 3 is the circuit theory diagrams of 3.3V mu balanced circuits in the embodiment；
Fig. 4 is the circuit theory diagrams of 2.5V mu balanced circuits in the embodiment；
Fig. 5 is the circuit theory diagrams of 1.8V mu balanced circuits in the embodiment；
Fig. 6 is the circuit theory diagrams of 1.2V mu balanced circuits in the embodiment；
Fig. 7 is the circuit theory diagrams of 1.0V mu balanced circuits in the embodiment；
Fig. 8 is the application principle figure of LM2576HV-5.0 chips in the embodiment；
Fig. 9 is the application principle figure of MP2482 chips in the embodiment.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
Property work under the premise of the every other embodiment that is obtained, belong to the scope of protection of the invention.
In technical grade communication equipment supply unit embodiment of the present invention, its technical grade communication equipment supply unit
Structural representation it is as shown in Figure 1.In Fig. 1, the technical grade communication equipment supply unit includes power input
Unit 1, Overvoltage protecting unit 2, rectification unit 3, over-current protecting unit 4, the first filter unit 5, first
Voltage regulation unit 6, the second filter unit 7 and the second voltage regulation unit 8, wherein, power input unit 1 includes the
No. second input circuit 12 of input circuit 11 and all the way, wherein, first via input circuit 11 is used for the first via
Direct current or exchange input, No. second input circuit 12 are used for the second road direct current or exchange input, overvoltage protection list
Unit 2 includes the first overvoltage crowbar 21 and the second overvoltage crowbar 22, and rectification unit 3 includes that first is whole
The rectification circuit 32 of current circuit 31 and second, first via input circuit 11 by the first overvoltage crowbar 21 with
One end connection of the first rectification circuit 31, No. second input circuit 12 by the second overvoltage crowbar 22 with
One end connection of the second rectification circuit 32, the other end of the first rectification circuit 31 and the second rectification circuit 32
The other end is connected by over-current protecting unit 4 with one end of the first filter unit 5, the first filter unit 5
The other end be connected with one end of the second filter unit 7 by the first voltage regulation unit 6, the second filter unit 7
The other end be connected with one end of the second voltage regulation unit 8, the second voltage regulation unit 8 includes multiple mu balanced circuits,
This multiple mu balanced circuit is respectively used to output and meets the different actually used voltages of chip.
In the present embodiment, after the input of two-way input power, overvoltage protection is first passed through, then carry out rectification, it is whole
Be combined into after stream all the way, then by overcurrent protection, filtering, a voltage stabilizing, filter again, finally carry out
Secondary pressure, exports the actually used voltage of various chips of stabilization.It can realize dual power supply Hot Spare, and can
With alternating current-direct current hybrid junction, cost is relatively low, be provided simultaneously with wide-range voltage access, environmental suitability it is stronger.
Fig. 2 is power input unit, Overvoltage protecting unit, rectification unit, overcurrent protection list in the present embodiment
The circuit theory diagrams of unit, the first filter unit, the first voltage regulation unit and the second filter unit.In the present embodiment,
Power input unit uses plug-in type connection terminal XS1, and weldering one end onboard is 90 ° of bend cuttings.Specifically,
In Fig. 2, power input unit 1 uses six pin plug-in type connection terminal XS1, the six pin plug-in terminals
The first pin VIN1+/L1 of sub- XS1 is positive terminal or the first via exchange input of first via direct current input
Fire line terminal, the second pin VIN1-/N1 of six pin plug-in type connection terminal XS1 is defeated for first via direct current
The zero terminal of negative terminal or the first via exchange input for entering, the of six pin plug-in type connection terminal XS1
Five pin VIN2+/L2 are the fire line terminal that the positive terminal of the second road direct current input or the exchange of the second tunnel are input into,
The 6th pin VIN2-/N2 of six pin plug-in type connection terminal XS1 is the negative terminal of the second road direct current input
Or second tunnel exchange input zero terminal.3rd pin and the 4th of six pin plug-in type connection terminal XS1
Pin is and connects protecting field.
In the present embodiment, the first overvoltage crowbar 21 includes the 8th transient voltage suppressor diode D8, the
Nine light emitting diode D9 and the 38th resistance R38, the second overvoltage crowbar 22 included for the 28th wink
State voltage suppression diode D28, the 25th light emitting diode D25 and the 43rd resistance R43, the 8th
One end of transient voltage suppressor diode D8 and first pin of six pin plug-in type connection terminal XS1
VIN1+/L1 connections, the other end of the 8th transient voltage suppressor diode D8 and six pin plug-in type connection terminals
The second pin VIN1-/N1 connections of XS1, the anode of the 9th light emitting diode D9 and the first rectification circuit 31
Connection, the negative electrode of the 9th light emitting diode D9 passes through the 38th resistance R38 and six pin plug-in type connection terminals
The second pin VIN1-/N1 connections of XS1, one end difference of the 28th transient voltage suppressor diode D28
With the 5th pin VIN2+/L2 and the 25th light emitting diode D25 of six pin plug-in type connection terminal XS1
Anode connection, the other end of the 28th transient voltage suppressor diode D28 and six pin plug-in terminals
The 6th pin VIN2-/N2 connections of sub- XS1, the negative electrode of the 25th light emitting diode D25 passes through the 4th
13 resistance R43 are connected with the second rectification circuit 32.
It is noted that in the present embodiment, the 8th transient voltage suppressor diode D8 and the 28th transient state
The model of voltage suppression diode D28 is SMBJ70CA, and its peak working load backward voltage is 70V, is hit
Voltage is worn for 86V, maximum clamp voltage is 125V, positive peak point current is 100A, maximum reverse surge electricity
It is 5A to flow, and maximum reverse Leakage Current is 5A, and the response time is less than 1ps, and operating temperature range is
- 55 DEG C~150 DEG C, the protection requirement of AC/DC9V-60V power inputs can be met, it is also possible to meet
- 40 DEG C~85 DEG C of operating environment requirements.9th light emitting diode D9 and the 25th light emitting diode D25
Be power supply indicator, it is whether normal for indicating power input, can simply determine whether power input or
Whether person's electric power polarity is reversed.
In the present embodiment, the first rectification circuit 31 includes the 7th commutation diode D7, the pole of the 11st rectification two
Pipe D11, the 20th commutation diode D20 and the 23rd commutation diode D23, the 7th commutation diode
The anode of the anode of D7 and the 20th commutation diode D20 is grounded, the negative electrode of the 7th commutation diode D7
Anode with the anode of the 11st commutation diode D11 with the 9th light emitting diode D9 is connected, and the 20th is whole
The negative electrode of stream diode D20 and the anode of the 23rd commutation diode D23 with six pin plug-in terminals
The second pin VIN1-/N1 connections of sub- XS1, the negative electrode and the 23rd of the 11st commutation diode D11
The one end of the negative electrode of commutation diode D23 with over-current protecting unit 4 is connected, and the second rectification circuit 32 includes
24th commutation diode D24, the 26th commutation diode D26, the 27th commutation diode D27
With the 29th commutation diode D29, the anode of the 24th commutation diode D24 and the 27th rectification
The anode of diode D27 is grounded, the negative electrode of the 24th commutation diode D24 and the 26th rectification two
Anode of the anode of pole pipe D26 with the 25th light emitting diode D25 is connected, the pole of the 27th rectification two
The anode of the negative electrode of pipe D27 and the 29th commutation diode D29 with six pin plug-in type connection terminal XS1
The 6th pin VIN2-/N2 connections, the negative electrode of the 26th commutation diode D26 and the 29th rectification two
The one end of the negative electrode of pole pipe D29 with over-current protecting unit 4 is connected.
It is noted that in the present embodiment, the 7th commutation diode D7, the 11st commutation diode D11,
20th commutation diode D20 and the 23rd commutation diode D23, the anode of the 7th commutation diode D7,
20th commutation diode D20, the 24th commutation diode D24, the 26th commutation diode D26,
27th commutation diode D27 and the 29th commutation diode D29 use S2B commutation diodes,
Using full-wave rectification pattern, not only to AC power rectification but also polarity inversion can be carried out to dc source,
Prevent reverse polarity connection from damaging subsequent conditioning circuit component.S2B commutation diodes maximum peak reverse voltage is 100V,
Maximum direct-current blocking-up voltage is 100V, and maximum forward average rectified current is 2A, peak forward surge current
It is 100A, operating temperature range is -55 DEG C~150 DEG C, the power of general industry level communication equipment can be met
It is required that, it is also possible to meet -40 DEG C~85 DEG C of operating environment requirements.
In the present embodiment, over-current protecting unit 4 is using disconnected formula auto-instauration fuse FU1 soon, concrete model
F1206-7.0A, its rated current is 7A, and rated voltage is 32V, and disconnection rated current is 35A, work
Temperature range is -40 DEG C~85 DEG C, can meet the power requirement of general industry level communication equipment, in follow-up electricity
Can quickly be disconnected after passing by stream, played a protective role, it is also possible to which the working environment for meeting -40 DEG C~85 DEG C will
Ask.
In the present embodiment, the first filter unit 5 includes that the 47th electrochemical capacitor C47 and the 46th magnetic are situated between
One end of matter electric capacity C46, the positive pole of the 47th electrochemical capacitor C47 and the 46th magnetizing mediums electric capacity C46
The other end with over-current protecting unit 4 is connected, the negative pole and the 46th of the 47th electrochemical capacitor C47
The other end of magnetizing mediums electric capacity C46 is grounded.It is situated between using the 47th electrochemical capacitor C47 and the 46th magnetic
The filtering mode that matter electric capacity C46 is combined, can effectively suppress the ripple and surge of each frequency range, meet 60V
Pressure voltage.
In the present embodiment, the first voltage regulation unit 6 includes switch buck voltage stabilizing chip D22, switch buck voltage stabilizing
First pin of chip D22 is connected with the other end of over-current protecting unit 4, and the of switch buck voltage stabilizing chip
Five (two) pins export 5V voltages.Specifically, the model that switch buck voltage stabilizing chip D22 is used
LM2576HV-5.0, its maximum input voltage is 63V, and normal work minimum input voltage is 7V, maximum defeated
Go out electric current for 3A, operating temperature range is -40 DEG C~125 DEG C.First the input voltage voltage stabilizing of 9V-60V is arrived
5V, and be filtered, for secondary pressure provides the voltage of 5V, ripple less than 50mV.
Fig. 8 is the application principle figure of LM2576HV-5.0 chips in the present embodiment, as shown in figure 8,
The 4th pin is fed back to after the voltage of the second pin output of LM2576HV-5.0 chips is filtered, by the 4th
The feedback voltage of pin controls the break-make of internal switch, and output voltage is precisely adjusted into 5V, the method effect
Rate is high, and chip caloric value is small, is adapted to be worked under harsh environment, and circuit is simple, and that breaks down is general
Rate is extremely low.
In the present embodiment, the second filter unit 7 includes the 21st diode D21, inductance L4, the 40th
Eight electric capacity C48, the 49th electric capacity C49, the 51st electric capacity C51 and the 52nd electric capacity C52, open
The second pin for closing lowering and stabilizing blood pressure chip D22 is connected with the negative electrode of the 21st diode D21, and the 21st
The plus earth of diode D21, the second pin of switch buck voltage stabilizing chip D22 is also with the one of inductance L4
End connection, the 48th electric capacity C48, the 49th electric capacity C49, the 51st electric capacity C51 and the 50th
Two electric capacity C52 are in parallel, and one end in parallel is connected with the other end of inductance L4, other end ground connection in parallel.
As shown in figure 1, the multiple mu balanced circuits in the second voltage regulation unit 8 in the present embodiment are respectively 3.3V
Mu balanced circuit 81,2.5V mu balanced circuits 82,1.8V mu balanced circuits 83,1.2V mu balanced circuits 84 and 1.0V
Mu balanced circuit 85,3.3V mu balanced circuits 81,2.5V mu balanced circuits 82,1.8V mu balanced circuits 83,1.2V are steady
Volt circuit 84 and 1.0V mu balanced circuits 85 are connected with the second filter unit 7.
Fig. 3 is the circuit theory diagrams of 3.3V mu balanced circuits in the present embodiment；Fig. 4 is 2.5V in the present embodiment
The circuit theory diagrams of mu balanced circuit；Fig. 5 is the circuit theory diagrams of 1.8V mu balanced circuits in the present embodiment；Fig. 6
It is the circuit theory diagrams of 1.2V mu balanced circuits in the present embodiment；Fig. 7 is 1.0V mu balanced circuits in the present embodiment
Circuit theory diagrams；In the present embodiment, 3.3V mu balanced circuits 81,2.5V mu balanced circuits 82,1.8V voltage stabilizings
Circuit 83,1.2V mu balanced circuits 84 and 1.0V mu balanced circuits 85 include MP2482 type switching regulator ICs
(i.e. the U3 in U13 and Fig. 7 in U5, Fig. 6 in U4, Fig. 5 in U2, Fig. 4 in Fig. 3).
The normal working voltage scope of MP2482 type switching regulator ICs is 4.5V-30V, and maximum output current is 5A,
Switching frequency is 420KHz, and operating temperature range is -40 DEG C~125 DEG C.By+the 3.3V of secondary pressure,
+ 2.5V ,+1.8V ,+1.2V and+1.0V, ripple control, can be with maximum output 5A's within 30mV
Electric current, can meet the power demand of general industry level communication equipment.
It is noted that in the present embodiment, 3.3V mu balanced circuits 81,2.5V mu balanced circuits 82,1.8V
Mu balanced circuit 83,1.2V mu balanced circuits 84 are identical with the circuit structure of 1.0V mu balanced circuits 85, different
It is 3.3V mu balanced circuits 81,2.5V mu balanced circuits 82,1.8V mu balanced circuits 83,1.2V mu balanced circuits 84
With the 22nd resistance R22, the 41st resistance R41, the 4th on the correspondence position of 1.0V mu balanced circuits 85
The resistance difference of 18 resistance R48, the 54th resistance R54 and the 33rd resistance R33.
Fig. 9 is the application principle figure of MP2482 chips in the present embodiment.As shown in figure 9, the first pin SW
Through first resistor R1 and second resistance R2 partial pressures after output voltage filtering, the 5th pin FB is fed back to, passed through
Feedback voltage carrys out the break-make of controlling switch, so that output stabilization is in required voltage value.Output voltage
VOUT=(R1/R2+1) 0.8V.
In a word, in the present embodiment, the input voltage of two-way AC/DC9-60V carry out respectively overvoltage protection,
Rectification, is then combined into all the way, then through overcurrent protection, filtering and voltage stabilizing twice, the low ripple stablized
Chip step voltage.There are overvoltage and overcurrent protection simultaneously, the power supply of stabilization is provided for chip.Make whole technical grade
Communication equipment is stablized, is reliably worked.It can realize dual power supply Hot Spare, and voltage accesses scope and is
AC/DC9-60V, operating ambient temperature is -40 DEG C~85 DEG C, and can be relatively low with alternating current-direct current hybrid junction, cost.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in this hair
Within bright spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in this hair
Within bright protection domain.
Claims (10)
1. a kind of technical grade communication equipment supply unit, it is characterised in that including power input unit, overvoltage
Protection location, rectification unit, over-current protecting unit, the first filter unit, the first voltage regulation unit, the second filter
Ripple unit and the second voltage regulation unit, the power input unit include what is be input into for first via direct current or exchange
First via input circuit with for the second road direct current or exchange input No. second input circuit, it is described overvoltage protect
Shield unit includes the first overvoltage crowbar and the second overvoltage crowbar, and the rectification unit includes that first is whole
Current circuit and the second rectification circuit, the first via input circuit pass through first overvoltage crowbar and institute
One end connection of the first rectification circuit is stated, No. second input circuit passes through second overvoltage crowbar
One end with second rectification circuit is connected, the other end of first rectification circuit and second rectification
The other end of circuit is connected by the over-current protecting unit with one end of first filter unit, described
The other end of the first filter unit is connected by first voltage regulation unit with one end of second filter unit
Connect, the other end of second filter unit is connected with one end of second voltage regulation unit, described second is steady
Pressure unit includes that multiple is respectively used to export the mu balanced circuit for meeting the different actually used voltages of chip.
2. technical grade communication equipment supply unit according to claim 1, it is characterised in that the electricity
Source input block uses six pin plug-in type connection terminals, and the first pin of the six pin plug-in type connection terminal is
The positive terminal of the first via direct current input or the fire line terminal of first via exchange input, the six pin plug
The second pin of formula binding post is negative terminal or the first via exchange input of the first via direct current input
Zero terminal, the 5th pin of the six pin plug-in type connection terminal is the positive pole of second road direct current input
Terminal or the fire line terminal of the second tunnel exchange input, the 6th pin of the six pin plug-in type connection terminal is institute
State the negative terminal of the second road direct current input or the zero terminal of the second tunnel exchange input.
3. technical grade communication equipment supply unit according to claim 2, it is characterised in that described
One overvoltage crowbar includes the 8th transient voltage suppressor diode, the 9th light emitting diode and the 38th electricity
Resistance, second overvoltage crowbar includes that the 28th transient voltage suppressor diode, the 25th light
Diode and the 43rd resistance, one end and six pin of the 8th transient voltage suppressor diode are plugged
The first pin connection of formula binding post, the other end and described six of the 8th transient voltage suppressor diode
The second pin connection of pin plug-in type connection terminal, the anode of the 9th light emitting diode is whole with described first
Current circuit is connected, and the negative electrode of the 9th light emitting diode is inserted by the 38th resistance with six pin
Pull out the second pin connection of formula binding post, one end difference of the 28th transient voltage suppressor diode
It is connected with the 5th pin of the six pin plug-in type connection terminal and the anode of the 25th light emitting diode, institute
The other end and the 6th of the six pin plug-in type connection terminal for stating the 28th transient voltage suppressor diode draw
Pin is connected, and the negative electrode of the 25th light emitting diode is whole with described second by the 43rd resistance
Current circuit is connected.
4. technical grade communication equipment supply unit according to claim 3, it is characterised in that described
One rectification circuit includes the 7th commutation diode, the 11st commutation diode, the 20th commutation diode and the
23 commutation diodes, the anode of the 7th commutation diode and the anode of the 20th commutation diode are equal
Ground connection, the negative electrode of the 7th commutation diode and the anode of the 11st commutation diode are sent out with the described 9th
The anode connection of optical diode, the negative electrode of the 20th commutation diode and the 23rd commutation diode
Second pin of the anode with the six pin plug-in type connection terminal is connected, the 11st commutation diode
The one end of the negative electrode of negative electrode and the 23rd commutation diode with the over-current protecting unit is connected, and described
Two rectification circuits include the 24th commutation diode, the 26th commutation diode, the 27th rectification two
Pole pipe and the 29th commutation diode, the anode of the 24th commutation diode and the 27th rectification
The anode of diode is grounded, the negative electrode and the 26th commutation diode of the 24th commutation diode
Anode of the anode with the 25th light emitting diode be connected, the 27th commutation diode
The anode of negative electrode and the 29th commutation diode connects with the 6th pin of the six pin plug-in type connection terminal
Connect, the negative electrode of the 26th commutation diode and the negative electrode of the 29th commutation diode with the mistake
Flow one end connection of protection location.
5. technical grade communication equipment supply unit according to claim 4, it is characterised in that described
One filter unit includes the 47th electrochemical capacitor and the 46th magnetizing mediums electric capacity, the 47th electrolysis
One end of the positive pole of electric capacity and the 46th magnetizing mediums electric capacity with the other end of the over-current protecting unit
Connection, the negative pole of the 47th electrochemical capacitor and the other end of the 46th magnetizing mediums electric capacity connect
Ground.
6. technical grade communication equipment supply unit according to claim 5, it is characterised in that described
One voltage regulation unit include switch buck voltage stabilizing chip, the first pin of the switch buck voltage stabilizing chip with it is described
The other end connection of over-current protecting unit, the second pin output 5V voltages of the switch buck voltage stabilizing chip.
7. technical grade communication equipment supply unit according to claim 6, it is characterised in that described
Two filter units include the 21st diode, inductance, the 48th electric capacity, the 49th electric capacity, the 5th
11 electric capacity and the 52nd electric capacity, the second pin of the switch buck voltage stabilizing chip and the described 21st
The negative electrode connection of diode, the plus earth of the 21st diode, the switch buck voltage stabilizing chip
One end also with the inductance of second pin be connected, the 48th electric capacity, the 49th electric capacity,
51 electric capacity and the 52nd electric capacity are in parallel, and one end in parallel is connected with the other end of the inductance, in parallel
The other end ground connection.
8. technical grade communication equipment supply unit according to claim 1, it is characterised in that described
Multiple mu balanced circuits in two voltage regulation units are respectively 3.3V mu balanced circuits, 2.5V mu balanced circuits, 1.8V voltage stabilizings
Circuit, 1.2V mu balanced circuits and 1.0V mu balanced circuits, the 3.3V mu balanced circuits, 2.5V mu balanced circuits,
1.8V mu balanced circuits, 1.2V mu balanced circuits and 1.0V mu balanced circuits are connected with the second filter unit.
9. technical grade communication equipment supply unit according to claim 8, it is characterised in that the 3.3V
Mu balanced circuit, 2.5V mu balanced circuits, 1.8V mu balanced circuits, 1.2V mu balanced circuits and 1.0V mu balanced circuits are equal
Including MP2482 type switching regulator ICs.
10. the technical grade communication equipment supply unit according to claim 1 to 8 any one, its feature
It is that the over-current protecting unit is using disconnected formula auto-instauration fuse soon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510919992.2A CN106877694A (en) | 2015-12-10 | 2015-12-10 | A kind of technical grade communication equipment supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510919992.2A CN106877694A (en) | 2015-12-10 | 2015-12-10 | A kind of technical grade communication equipment supply unit |
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| Publication Number | Publication Date |
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| CN106877694A true CN106877694A (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510919992.2A Pending CN106877694A (en) | 2015-12-10 | 2015-12-10 | A kind of technical grade communication equipment supply unit |
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| CN107748516A (en) * | 2017-10-16 | 2018-03-02 | 安德信微波设备有限公司 | A kind of novel communication control interface module |
| CN109245277A (en) * | 2018-09-25 | 2019-01-18 | 许昌许继软件技术有限公司 | A kind of backup power supply energy storage control device and a kind of power-supply system |
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Application publication date: 20170620 |