CN107070199B - A kind of multiple-channel output modular power source output voltage isolation interlocking control circuit - Google Patents
A kind of multiple-channel output modular power source output voltage isolation interlocking control circuit Download PDFInfo
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- CN107070199B CN107070199B CN201611124346.8A CN201611124346A CN107070199B CN 107070199 B CN107070199 B CN 107070199B CN 201611124346 A CN201611124346 A CN 201611124346A CN 107070199 B CN107070199 B CN 107070199B
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
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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
- H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Voltage And Current In General (AREA)
- Inverter Devices (AREA)
Abstract
A kind of multiple-channel output modular power source output voltage isolation interlocking control circuit, main power circuit includes modular power source power conversion circuit 1#, power conversion circuit 2#, multiple-channel output modular power source shares inlet highway and input filter, different output voltages is generated by different power conversion circuit transformation, also, the realization of multiple-channel output voltage is electrically isolated completely to.Output voltage interlocking control circuit is to detect output voltage all the way to pass through the control circuit that optocoupler controls another output power supply to control signal, realize the interlocking purpose of output voltage.The present invention combines optocoupler and control circuit, off signal can be passed on the output voltage controlled, while also achieving the electrical isolation between output.Output voltage interlocking control circuit realizes after at certain, output voltage is normal all the way, and the function of just allowing other road output voltages normally to export ensure that the safety and reliability of electrical equipment.
Description
Technical field
The invention belongs to space flight general technical fields, are related to a kind of applied to multiple-channel output required for aerospace electron product
Interlocking control circuit is isolated in modular power source output voltage, and method also can be widely applied in ground-based electronic equipment.
Background technique
With being increasing with electronic equipment on satellite type of space technology, for its power module for providing power supply
Output voltage grade also increases therewith, wherein mainly having: 3.3V, ± 5V ,+8V ,+9.3V, ± 12V, ± 15V, 28V etc., for
For single out-put supply module, each voltage class just needs a power module to provide, this not only increase design and
The difficulty of technique production, and improve the cost of power-supply system.Multiple-channel output modular power source can export more than one simultaneously
Voltage class can also not only save cost, but also can mention simultaneously to need the electronic equipment of multiple voltage class to provide power supply
High design and the efficiency of production.
Some electrical equipments propose interlock requirement between the output voltage of multiple-channel output modular power source, some electricity consumptions are set
It is standby that requirement is proposed to electricity timing upper and lower between multiple-channel output voltage, after at certain, output voltage is normal all the way, just allow other
Road output voltage normally exports；Or electrical equipment work normally during, certain all the way the power down of output voltage failure when, it is desirable that its
Its road output voltage must power off.The spaceborne power supply of tradition, is powering on the moment, power source internal has had electric presence, can be by prolonging
When circuit to control power-on time reach relationship of powering between output voltage.But during power work, at delay circuit
It will not cut any ice, not can guarantee having delay circuit when certain output voltage failure power down all the way in steady operation
The power supply safety and reliability of electrical equipment.
Domestic and international pertinent literature is retrieved, has no a kind of multiple-channel output modular power source output voltage isolation for the present invention
The report of interlocking control circuit.
Summary of the invention
Present invention solves the technical problem that are as follows: it overcomes the shortage of prior art, it is defeated to provide a kind of multiple-channel output modular power source
Interlocking control circuit is isolated in voltage out, and cleverly optocoupler and control circuit are combined, shutdown signal priority can be passed to
On the output voltage controlled, interlocked relationship between the output voltage of modular power source is realized, while also achieving between output
Electrical isolation, ensure that the safety and reliability of electrical equipment.
The technical solution that the present invention solves are as follows: a kind of multiple-channel output modular power source output voltage isolation interlocking control circuit,
It include: inlet highway (1), input filter (2), power conversion circuit 1# (3), control circuit 1# (4), power conversion circuit 2#
(5), (6) control circuit 2#, output filter circuit 1 (7), output filter circuit 2 (8), output voltage interlocking control circuit (9)；
Output filter circuit 1 (7), including inductance L1, tantalum capacitor C3；
Output filter circuit 2 (8), including inductance L2, capacitor C4；
Output voltage interlocking control circuit (9), including optocoupler IC1, comparator IC2, resistance R1, R2, R3, R4, R5, R6,
Filter capacitor C1, C2；
The input negative terminal connection of the anode of input anode connection inlet highway (1) of input filter, input filter is defeated
Enter the negative terminal of bus (1), the output plus terminal of input filter connects the input anode of power conversion circuit 1# (3) all the way；Input
The output plus terminal of filter connects the input anode of power conversion circuit 2# (5) all the way；The output negative terminal of input filter is all the way
Connect the input negative terminal of power conversion circuit 1# (3)；The output negative terminal of input filter connects power conversion circuit 2# (5) all the way
Input negative terminal；One end of the output plus terminal connection inductance L1 of power conversion circuit 1# (3), the other end first via of inductance L1 connect
Connect the anode of tantalum capacitor C3, first output end of the second tunnel of the other end of inductance L1 as multiple-channel output voltage isolation interlock circuit
One end of the other end third road connection resistance R1 of Vo1, inductance L1；The one of the 4th tunnel of the other end connection resistance R41 of inductance L1
End；Negative terminal, the output negative terminal of power conversion circuit 1# (3), one end of R2, one end of R4, one end of R42, R44 of tantalum capacitor C3
One end, one end of R46, one end of C1, one end of C43, one end of C2, C40 one end connect with the ground terminal of comparator IC2
Ground GND1；The other end of R2, the other end of R1, C1 the other end connection comparator IC2 input anode；One end of R3, R4
The other end, C2 the other end connection comparator IC2 input negative terminal；The other end of resistance R3, one end of R45 connect control circuit
The reference voltage output end VREF of 1# (4)；One end of the feeder ear connection resistance R5 of comparator IC2, the other end, the R6 of resistance R5
One end, control circuit 1# (4) supply voltage output end VCC connection external power supply VC1；The other end of R6 connects optocoupler IC1
Anode；The cathode of the output end connection optocoupler IC1 of comparator IC2；The emitter connection ground GND2 of optocoupler IC1；Optocoupler IC1's
The starting control terminal SOFT START foot of one end connection control circuit 2# (6) of collector, capacitor C60；
The feeder ear VCC foot of control circuit 1# (4) connects external power supply VC1；The amplifier input negative terminal of control circuit 1# (4)
INV foot connects one end of the other end of resistance R41, one end of capacitor C41, the other end of resistance R42, resistance R43；Capacitor C41
The other end connection control circuit 1# (4) amplifier output E/Aout foot, capacitor C42 one end；The other end of capacitor C42 connects
The other end of resistance R43；The timing resistor RT foot of control circuit 1# (4) connects the resistance R44 other end；The other end of capacitor C43
Connect the timing capacitor CT foot of control circuit 1# (4)；The control signal of control circuit 1# (4) exports OUTA foot to power conversion electricity
Road 1# (3) output control signal, control power conversion circuit 1# (3) work；
One end of power conversion circuit 2# (5) output plus terminal connection inductance L2；The first via conduct of the other end of inductance L2
The second output terminal Vo2 of multiple-channel output modular power source output voltage isolation interlocking control circuit, the second of the other end of inductance L2
One end of road connection capacitor C4；One end of the third road connection resistance R61 of the other end of inductance L2；The confession of control circuit 2# (6)
Electric end VCC foot connects external power supply VC2；The other end of the amplifier input negative terminal INV foot connection resistance R61 of control circuit 2# (6),
One end of capacitor C61, one end of resistance R62, resistance R63 one end；Other end connection control circuit 2# (6) of capacitor C61
Amplifier exports one end of E/Aout foot, capacitor C62；The other end of the other end connection resistance R63 of capacitor C62；Control circuit 2#
(6) timing resistor RT foot connects the one end resistance R64；The timing capacitor CT of other end connection control circuit 2# (6) of capacitor C63
Foot；The other end of resistance R62, the other end of resistance R64, the other end of capacitor C63, the other end of capacitor C60, capacitor C4 it is another
One end connects the output negative terminal GND2 of power conversion circuit 2# (5)；The control signal of control circuit 2# (6) exports OUTA foot to function
Rate translation circuit 2# (5) output control signal, control power conversion circuit 2# (5) work.
The advantages of the present invention over the prior art are that:
(1) interlocking control circuit is isolated in multiple-channel output modular power source output voltage of the invention, cleverly optocoupler and control
Circuit processed combines, and off signal can be passed on the output voltage controlled, realizes the output of multiple-channel output modular power source
Interlocked relationship between voltage, while also achieving the electrical isolation between output voltage.
(2) interlocking control circuit is isolated in multiple-channel output modular power source output voltage of the invention, realizes electrical equipment confession
Interlocked relationship between piezoelectric voltage ensure that the safety and reliability of electrical equipment.
(3) device used in multiple-channel output modular power source output voltage of the invention isolation interlocking control circuit is less, realizes
Simply, there is good economic benefit.
Detailed description of the invention
Circuit diagram Fig. 1 of the invention；
Modular power source Fig. 2 of the invention starts test waveform；
Interlocking test waveform is isolated in output voltage Fig. 3 of the invention.
Specific embodiment
Basic ideas of the invention are as follows: a kind of multiple-channel output modular power source output voltage isolation interlocking control circuit, main function
Rate circuit includes modular power source power conversion circuit 1#, power conversion circuit 2#, and multiple-channel output modular power source shares inlet highway
And input filter, different output voltages is generated by different power conversion circuit transformation, also, multiple-channel output voltage is real
Now it is electrically isolated completely to.Output voltage interlocking control circuit is to detect output voltage all the way to pass through optocoupler to control signal
The control circuit of another output power supply is controlled, realizes the interlocking purpose of output voltage.The present invention is optocoupler and control electricity
Road combines, and off signal can be passed on the output voltage controlled, at the same also achieve output between it is electrical every
From.Output voltage interlocking control circuit realizes after at certain, output voltage is normal all the way, just allows other road output voltages normal
The function of output, the circuit ensure that the safety and reliability of electrical equipment.Also, used in output voltage interlocking control circuit
Device is less, realizes simply, has good economic benefit.
The invention will be described in further detail in the following with reference to the drawings and specific embodiments,
A kind of multiple-channel output modular power source output voltage isolation interlocking control circuit combination attached drawing proposed by the present invention and reality
Applying example, detailed description are as follows.
A kind of multiple-channel output modular power source output voltage isolation interlocking control circuit proposed by the present invention includes: inlet highway
(1), input filter (2), power conversion circuit 1# (3), control circuit 1# (4), power conversion circuit 2# (5), control circuit
2# (6), output filter circuit 1 (7), output filter circuit 2 (8), output voltage interlocking control circuit (9), schematic diagram such as Fig. 1 institute
Show.
Since the present invention relates to a kind of multiple-channel output modular power source output voltages, and interlocking control circuit is isolated, in power
Any topology can be selected on the topological structure of translation circuit 1# (3) and the main power of power conversion circuit 2# (5).
When modular power source works, inlet highway is by input filter, to translation circuit 1# (3) and power conversion circuit 2#
(5) it powers, external power supply VC1 is powered by the feeder ear VCC of control circuit 1# (4) to control circuit 1# (4), control electricity
Road 1# (4) starting control terminal SOFT START will charge to capacitor C40, and constant charging current is 9 μ A, when capacitor charging voltage reaches
It starts to work to 5V time control coremaking piece, a reference voltage signal is generated inside control circuit 1# (4), by reference to voltage output
The outside output reference voltage signal of Vref is held, and by the transformation of resistance R45 and resistance R46 as control circuit 1# (4) amplifier
Input the reference voltage of anode NI foot, while the input by the transformation of resistance R3, resistance R4, capacitor C2 as comparator IC2
Negative terminal voltage.Resistance R41 and R42 acquires output voltage Vo1, as the voltage of the amplifier input negative terminal INV of control circuit 1# (4)
Signal, resistance R41, resistance R42, capacitor C41, resistance R43, capacitor C42 amplifier input anode NI, amplifier input negative terminal INV with
And amplifier output E/Aout constitutes the closed-loop feedback control system of (4) control circuit 1#, and generates pwm control signal, passes through
The work of control signal output OUTA foot control translation circuit 1# (3) of control circuit 1# (4), realizes the process of voltage transformation,
The input voltage of bus input (1) is transformed into output voltage Vo1, the starting time t1=5*C40/9 of main part of modular power source (1)
μA；
External power supply VC2 is powered by the feeder ear VCC of control circuit 2# (6) to control circuit 2# (6), control electricity
Road 2# (6) starting control terminal SOFT START will charge to capacitor C60, and constant charging current is 9 μ A, when capacitor charging voltage reaches
It starts to work to 5V time control coremaking piece, a reference voltage signal is generated inside control circuit 2# (6), by reference to voltage output
The outside output reference voltage signal of Vref is held, and by the transformation of resistance R65 and resistance R66 as control circuit 2# (6) amplifier
Input the reference voltage of anode NI foot.Resistance R61 and R62 acquires output voltage Vo2, defeated as the amplifier of control circuit 2# (6)
Enter the voltage signal of negative terminal INV, resistance R61, resistance R62, capacitor C61, resistance R63, capacitor C62, amplifier input anode NI, fortune
It puts input negative terminal INV and amplifier output E/Aout constitutes the closed-loop feedback control system of (6) control circuit 2#, and generate
Pwm control signal is realized by the work of control signal output OUTA foot control translation circuit 2# (5) of control circuit 2# (6)
The input voltage of bus input (1) is transformed into output voltage Vo2, the starting of main part of modular power source (1) by the process of voltage transformation
Time t2=5*C60/9 μ A；
This report has carried out verification experimental verification on+5V ,+8V dual output power module, after+5V output is normal, just permits
Perhaps+8V is exported, and after+5V failure, pressure+8V output is closed.
To guarantee that booting timing+5V works prior to+8V, the capacitance of capacitor C60 requires the capacitor much larger than capacitor C40 to hold
Value need to be greater than 5 times or more, and the present invention recommends capacitor C1=0.1 μ F, C4=2 μ F.When power initiation, main part of modular power source (2)
Starting time t1 is significantly less than the starting time t2 of modular power source backup (3), so the time of the Voltage Establishment at the end Vo1 is considerably shorter than
It the Voltage Establishment time at the end Vo2, ensure that on startup ,+8V is exported after+5V stablizes output, and test waveform is as shown in Figure 2.
The present invention considers pulsation feelings when electric power output voltage Vo1 work in design isolation interlocking control circuit work
Condition, and consider that the response that is switched fast of circuit when output voltage Vo1 falls requires, when isolation interlocking control circuit works
The setting of output voltage Vo1 voltage value should not get too close to output voltage Vo1, it is also unsuitable too low, when design, preferably when output electricity
When the value of pressure Vo1 drops to 0.8 × Vo1, output voltage Vo2 is closed, relational expression:
Consider the overall efficiency of circuit and the design of Reducing Rating of component, the present invention preferred R3=R4=10k Ω, R1=10K
Ω, R2=15k Ω.
Test waveform when normal work is as shown in figure 3, in normal work ,+5V and+8V is normally exported.The t1 moment ,+
5V breaks down, Voltage Drop to 4V, and+8V output as can be seen from Figure is closed；At the t2 moment ,+5V Failure elimination restores just
Often output ,+8V also restores normally to export at this time.
The content that description in the present invention is not described in detail belongs to the well-known technique of those skilled in the art.
Claims (1)
1. interlocking control circuit is isolated in a kind of multiple-channel output modular power source output voltage, characterized by comprising: inlet highway
(1), input filter (2), power conversion circuit 1# (3), control circuit 1# (4), power conversion circuit 2# (5), control circuit
2# (6), output filter circuit 1 (7), output filter circuit 2 (8), output voltage interlocking control circuit (9)；
Output filter circuit 1 (7), including inductance L1, tantalum capacitor C3；
Output filter circuit 2 (8), including inductance L2, capacitor C4；
Output voltage interlocking control circuit (9), including optocoupler IC1, comparator IC2, resistance R1, R2, R3, R4, R5, R6 are filtered
Capacitor C1, C2；
The input negative terminal connection input of the anode of input anode connection inlet highway (1) of input filter, input filter is female
The negative terminal of line (1), the output plus terminal of input filter connect the input anode of power conversion circuit 1# (3) all the way；Input filter
The output plus terminal of device connects the input anode of power conversion circuit 2# (5) all the way；The output negative terminal of input filter connects all the way
The input negative terminal of power conversion circuit 1# (3)；The output negative terminal of input filter connects the defeated of power conversion circuit 2# (5) all the way
Enter negative terminal；One end of the output plus terminal connection inductance L1 of power conversion circuit 1# (3), the other end first via of inductance L1 connect tantalum
The anode of capacitor C3, first output end vo 1 of the second tunnel of the other end of inductance L1 as multiple-channel output voltage isolation interlock circuit,
One end of the other end third road connection resistance R1 of inductance L1；One end of the 4th tunnel of the other end connection resistance R41 of inductance L1；Tantalum
The negative terminal of capacitor C3, the output negative terminal of power conversion circuit 1# (3), one end of R2, one end of R4, one end of R42, R44 one
End, one end of R46, one end of C1, one end of C43, one end of C2, C40 one end connect ground with the ground terminal of comparator IC2
GND1；The other end of R2, the other end of R1, C1 the other end connection comparator IC2 input anode；One end of R3, R4 it is another
One end, C2 the other end connection comparator IC2 input negative terminal；The other end of resistance R3, one end of R45 connect control circuit 1#
(4) reference voltage output end VREF；One end of the feeder ear connection resistance R5 of comparator IC2, the other end of resistance R5, R6
One end, control circuit 1# (4) supply voltage output end VCC connection external power supply VC1；The other end connection optocoupler IC1's of R6
Anode；The cathode of the output end connection optocoupler IC1 of comparator IC2；The emitter connection ground GND2 of optocoupler IC1；The collection of optocoupler IC1
The starting control terminal SOFT START foot of one end connection control circuit 2# (6) of electrode, capacitor C60；
The feeder ear VCC foot of control circuit 1# (4) connects external power supply VC1；The amplifier input negative terminal INV of control circuit 1# (4)
Foot connects one end of the other end of resistance R41, one end of capacitor C41, the other end of resistance R42, resistance R43；Capacitor C41's is another
One end connects one end of the amplifier output E/Aout foot of control circuit 1# (4), capacitor C42；The other end of capacitor C42 connects resistance
The other end of R43；The timing resistor RT foot of control circuit 1# (4) connects the resistance R44 other end；The other end of capacitor C43 connects
The timing capacitor CT foot of control circuit 1# (4)；The control signal of control circuit 1# (4) exports OUTA foot to power conversion circuit 1#
(3) output control signal, control power conversion circuit 1# (3) work；
One end of power conversion circuit 2# (5) output plus terminal connection inductance L2；The first via of the other end of inductance L2 is as multichannel
The second output terminal Vo2 of interlocking control circuit is isolated in output module electric power output voltage, and the second tunnel of the other end of inductance L2 connects
Connect one end of capacitor C4；One end of the third road connection resistance R61 of the other end of inductance L2；The feeder ear of control circuit 2# (6)
VCC foot connects external power supply VC2；The other end, the capacitor of the amplifier input negative terminal INV foot connection resistance R61 of control circuit 2# (6)
One end of C61, one end of resistance R62, resistance R63 one end；The amplifier of other end connection control circuit 2# (6) of capacitor C61
Export one end of E/Aout foot, capacitor C62；The other end of the other end connection resistance R63 of capacitor C62；Control circuit 2#'s (6)
Timing resistor RT foot connects the one end resistance R64；The timing capacitor CT foot of other end connection control circuit 2# (6) of capacitor C63；Electricity
Hinder the other end of the other end of R62, the other end of resistance R64, the other end of capacitor C63, the other end of capacitor C60, capacitor C4
Connect the output negative terminal GND2 of power conversion circuit 2# (5)；The control signal of control circuit 2# (6) exports OUTA foot and becomes to power
Change circuit 2# (5) output control signal, control power conversion circuit 2# (5) work；
R46 connects the non-inverting input terminal NI of control circuit 1# (4) with the other end of R45.
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| CN201611124346.8A CN107070199B (en) | 2016-12-08 | 2016-12-08 | A kind of multiple-channel output modular power source output voltage isolation interlocking control circuit |
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| CN201611124346.8A CN107070199B (en) | 2016-12-08 | 2016-12-08 | A kind of multiple-channel output modular power source output voltage isolation interlocking control circuit |
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| CN107070199B true CN107070199B (en) | 2019-03-26 |
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| CN107846134A (en) * | 2017-12-05 | 2018-03-27 | 湖北巴东博宇工贸有限公司 | High-effect single-chip microcomputer dual output electric car DC converters |
| CN108054915A (en) * | 2017-12-19 | 2018-05-18 | 北京卫星制造厂 | A kind of voltage stabilizing power supplying circuit of Width funtion output |
| CN109100971B (en) * | 2018-08-20 | 2024-02-09 | 合肥华耀电子工业有限公司 | On-off time sequence control circuit with interlocking function |
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| CN101232237A (en) * | 2007-01-26 | 2008-07-30 | 艾默生网络能源系统有限公司 | Multi-output power supply |
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| JP4910525B2 (en) * | 2006-07-11 | 2012-04-04 | サンケン電気株式会社 | Resonant switching power supply |
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| CN106134501B (en) * | 2012-02-21 | 2014-05-28 | 北京卫星制造厂 | A kind of multichannel output module power supply is lower electric sequential control circuit preferentially |
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