CN106134501B - A kind of multichannel output module power supply is lower electric sequential control circuit preferentially - Google Patents
A kind of multichannel output module power supply is lower electric sequential control circuit preferentiallyInfo
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- CN106134501B CN106134501B CN201218000043.1A CN201218000043A CN106134501B CN 106134501 B CN106134501 B CN 106134501B CN 201218000043 A CN201218000043 A CN 201218000043A CN 106134501 B CN106134501 B CN 106134501B
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Abstract
The invention discloses preferentially lower electric sequential control circuit of a kind of multichannel output module power supply, comprise sequential control circuit, power conversion circuit and secondary pressure circuit, when K switch in sequential control circuit 1 is closed, utilize the discharge signal of capacitor C 1 in sequential control circuit to pass to the Enable Pin of the poor voltage stabilizing IC1 of secondary pressure circuit mesolow by optocoupler V1, make preferentially lower electricity of bypass output Vout2. The preferential lower electric sequential control circuit of this multichannel modular power source can be widely used in needing plurality of voltages, and the power supply timing of voltage is had to many output modules power supply occasion of requirement.
Description
Technical field
The invention belongs to space flight general technical field, relate to preferentially lower electric sequential of a kind of multichannel output module power supplyControl circuit.
Background technology
Along with being on the increase of spaceborne electronic equipment kind, be its power module that power supply is provided, it exports electricityThe grade of pressing also increases thereupon, wherein mainly contains: 3.3V, ± 5V, ± 12V, ± 15V, 28V etc., forSingle out-put supply module, each electric pressure just needs a power module to provide, and this not only increasesAdd the difficulty that design and processes is produced, and improved the cost of power-supply system. Multiple-output electric power can be sameTime export more than one electric pressure, can be simultaneously for the multiple electric pressure distinct electronic apparatuses of needs providePower supply, both provided cost savings, the efficiency that can improve again design and produce.
The upper and lower electric sequential that some consumer powers on to multichannel has proposed requirement, the rear lower electricity first powering on,After the first lower electricity that powers on, for power module, electrifying timing sequence is to be very easy to control, because upperIn the electricity moment, power supply inside has had electricity to exist, and can pass through delay circuit, controls power-on time. But underElectricity sequential is very unmanageable, and when sending after shutdown command, power supply inside has not existed voltage,Delay circuit also can not be cut any ice, and at this moment the power down time of voltage is just followed the size of load capacitive,The size of load has relation, exists a lot of uncertain.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of multichannel output mould is providedBlock power supply is lower electric sequential control circuit preferentially, utilizes the GS electric capacity of surge killer tube to spark to realize certainOne tunnel is lower electricity preferentially, simplicity of design, and reliability is high.
Technical solution of the present invention is:
A kind of multichannel output module power supply is lower electric sequential control circuit preferentially, comprises sequential control circuit, powerTranslation circuit and secondary pressure circuit; Wherein, sequential control circuit comprises K switch 1, optocoupler V1, resistanceR1, R2, R3, capacitor C 1 and metal-oxide-semiconductor M1; Secondary pressure circuit comprise resistance R 4, R5, R6,R7, capacitor C 2, C3 and low-dropout regulator IC1;
One end of externally fed input anode contact resistance R1, simultaneously also as the input of power conversion circuitMain track is connected to the positive input terminal of power conversion circuit; The other end of resistance R 1, one end of resistance R 2, electricityIn resistance one end of R3 and optocoupler V1 the anodic bonding of diode together, the moon of diode in optocoupler V1The utmost point connects externally fed input negative terminal by K switch 1, and it is defeated that the other end of resistance R 3 is also connected to externally fedEnter negative terminal; The other end of resistance R 2 is connected to externally fed input negative terminal by capacitor C 1, also connects simultaneouslyTo the grid of metal-oxide-semiconductor M1, the source electrode of metal-oxide-semiconductor M1 is connected to externally fed input negative terminal, MOSThe drain electrode of pipe M1 is connected to the negative input end of power conversion circuit, and in optocoupler V1, the colelctor electrode of triode connectsThe bypass output main track that connects power conversion circuit, in optocoupler V1, the emitter stage of triode is connected to secondary pressureOne end of resistance R 4 in circuit, the other end of resistance R 4 is connected to enabling of low-dropout regulator IC1Hold, be also connected to the bypass output negative wire of power conversion circuit by resistance R 5, power conversion circuit simultaneouslyBypass output main track and negative wire between string have capacitor C 2, and the bypass of power conversion circuit output main track connectsTo the voltage input anode of low-dropout regulator IC1, the output plus terminal of low-dropout regulator IC1 is connected to electricityOne end of resistance R6, the other end of resistance R 6 is connected to the voltage adjustment end of low-dropout regulator IC1, withTime be also connected to the bypass output negative wire of power conversion circuit by resistance R 7, low-dropout regulator IC1'sBetween the bypass output negative wire of output plus terminal and power conversion circuit, also string has capacitor C 3, low-dropout regulatorPressure reduction output between the output plus terminal of IC1 and the bypass of power conversion circuit output negative wire is described multichannelOutput module power supply is the bypass output voltage of lower electric sequential control circuit preferentially, and the main road of power conversion circuit is defeatedGo out to be the preferentially main road output voltage of lower electric sequential control circuit of described multichannel output module power supply.
The present invention's beneficial effect is compared with prior art:
(1) multiple-output electric power control circuit of the present invention, main road output can be passed through direct voltage feedback stabilityVoltage, bypass output can reach stable Voltage-output by low-dropout regulator.
(2) preferential lower electric control circuit of the present invention, cleverly discharging and recharging and optocoupler combination capacitor C 1Get up, shutdown signal priority can be passed on controlled output voltage, also realized simultaneously electric everyFrom.
(3) preferential lower electric sequential control circuit of the present invention generally needs capacitor C 1 capacity larger, therefore shouldCircuit can also effectively reduce inrush current.
Brief description of the drawings
Fig. 1 is circuit diagram of the present invention.
Detailed description of the invention
As shown in Figure 1, the invention provides preferentially lower electric sequential control circuit of a kind of multichannel output module power supply,This circuit comprises sequential control circuit, power conversion circuit and secondary pressure circuit; Vout1 is straight in main road outputConnect closed loop feedback voltage stabilizing, bypass Vout2 carries out secondary pressure, power conversion circuit by secondary pressure circuitFor traditional multichannel output transform circuit.
Sequential control circuit comprises K switch 1, optocoupler V1, resistance R 1, R2, R3, capacitor C 1 and MOSPipe M1; Secondary pressure circuit comprises that resistance R 4, R5, R6, R7, capacitor C 2, C3 and low voltage difference are steadyDepressor IC1;
One end of externally fed input anode vin+ contact resistance R1, simultaneously also as power conversion circuitInput main track is connected to the positive input terminal of power conversion circuit; The other end of resistance R 1, one end of resistance R 2,In one end of resistance R 3 and optocoupler V1 the anodic bonding of diode together, diode in optocoupler V1Negative electrode connects externally fed input negative terminal by K switch 1, and the other end of resistance R 3 is also connected to externally fedInput negative terminal; The other end of resistance R 2 is connected to externally fed input negative terminal by capacitor C 1, also connects simultaneouslyReceive the grid of metal-oxide-semiconductor M1, the source electrode of metal-oxide-semiconductor M1 is connected to externally fed input negative terminal, MOSThe drain electrode of pipe M1 is connected to the negative input end of power conversion circuit, and in optocoupler V1, the colelctor electrode of triode connectsThe bypass output main track that connects power conversion circuit, in optocoupler V1, the emitter stage of triode is connected to secondary pressureOne end of resistance R 4 in circuit, the other end of resistance R 4 is connected to enabling of low-dropout regulator IC1Hold EN, be also connected to the bypass output negative wire of power conversion circuit by resistance R 5, power conversion electricity simultaneouslyBetween the bypass output main track on road and negative wire, string has capacitor C 2, and the bypass of power conversion circuit output main track connectsReceive the voltage input anode Vin of low-dropout regulator IC1, the output plus terminal Vout of low-dropout regulator IC1Be connected to one end of resistance R 6, the other end of resistance R 6 is connected to the voltage of low-dropout regulator IC1 and adjustsWhole end Adj is also connected to the bypass output negative wire of power conversion circuit simultaneously by resistance R 7, low voltage difference is steadyBetween the output plus terminal of depressor IC1 and the bypass of power conversion circuit output negative wire, also string has capacitor C 3, low pressurePressure reduction output between the output plus terminal of poor voltage-stablizer IC1 and the bypass of power conversion circuit output negative wire isDescribed multichannel output module power supply is the bypass output voltage V out2 of lower electric sequential control circuit preferentially, and power becomesThe main road output of changing circuit is described multichannel output module power supply, and preferentially the main road of electric sequential control circuit is defeated downGo out voltage Vout1, the input negative terminal Gnd (earth terminal) of low-dropout regulator IC1 connects power conversion electricityThe bypass output negative wire on road.
In order to ensure the stability of multichannel output voltage, each road output voltage all needs to carry out closed-loop control,Be the direct closed-loop control of main road, all the other bypasses all need secondary pressure. Adopt preferential lower electric sequential control circuitCan realize in when shutdown bypass electricity under the voltage first of a certain road, to meet will going of load equipment.
Multichannel output refers to an input and two and above output, many in order to ensure to realize on electricRoad isolates output voltage completely, and the means that isolation is used are to adopt magnetic field to realize.
Secondary pressure circuit is a low voltage difference mu balanced circuit, can ensure the stability of output voltage.
Preferential lower sequential control circuit is by the shutdown moment, taking the electric discharge of electric capacity as signal, closes in bypassA certain road output voltage.
In the time that K switch 1 is closed, the capacitor C 1 in sequential control circuit will be passed through the diode of optocoupler V1Discharge, the triode conducting of optocoupler V1, removes to control the poor voltage-stablizer IC1 of secondary pressure circuit mesolowEnable Pin EN, control the lower electric object of Vout2 output to reach.
When turn-offing, in sequential control circuit, optocoupler V1 saturation conduction, should make capacitor C 1 have largerCapacity, R2 can not be too large simultaneously, the general 4.7uF～10uF of capacitor C 1 capacity, resistance R 2 should be not more than
2KΩ。
LM2941 is a conventional low voltage difference voltage stabilizing chip, and maximum input voltage is 26V, input voltage withMinimum differntial pressure between output is 0.35V, and output voltage can be by non-essential resistance R6, R7 at 5V～20VBetween regulate arbitrarily, and can control output voltage and have or not by enabling disconnected EN.
Claims (1)
1. a preferentially lower electric sequential control circuit of multichannel output module power supply, is characterized in that: comprise sequentialControl circuit, power conversion circuit and secondary pressure circuit; Wherein, sequential control circuit comprise K switch 1,Optocoupler V1, resistance R 1, R2, R3, capacitor C 1 and metal-oxide-semiconductor M1; Secondary pressure circuit comprises electricityResistance R4, R5, R6, R7, capacitor C 2, C3 and low-dropout regulator IC1;
One end of externally fed input anode contact resistance R1, externally fed input anode is simultaneously also as meritThe input main track of rate translation circuit is connected to the positive input terminal of power conversion circuit; The other end of resistance R 1,In one end of resistance R 2, one end of resistance R 3 and optocoupler V1 the anodic bonding of diode together, lightIn coupling V1, the negative electrode of diode connects externally fed input negative terminal, the other end of resistance R 3 by K switch 1Also be connected to externally fed input negative terminal; It is defeated that the other end of resistance R 2 is connected to externally fed by capacitor C 1Enter negative terminal, the other end of resistance R 2 is also connected to the grid of metal-oxide-semiconductor M1 simultaneously, metal-oxide-semiconductor M1'sSource electrode is connected to externally fed input negative terminal, and the drain electrode of metal-oxide-semiconductor M1 is connected to the negative defeated of power conversion circuitEnter end, in optocoupler V1, the colelctor electrode of triode connects the bypass output main track of power conversion circuit, optocoupler V1The emitter stage of middle triode is connected to one end of the resistance R 4 in secondary pressure circuit, the other end of resistance R 4Be connected to the Enable Pin of low-dropout regulator IC1, the other end of resistance R 4 also connects by resistance R 5 simultaneouslyReceive the bypass output negative wire of power conversion circuit, the bypass output main track of power conversion circuit and bypass outputBetween negative wire, string has capacitor C 2, and the bypass of power conversion circuit output main track is connected to low-dropout regulatorThe voltage input anode of IC1, the output plus terminal of low-dropout regulator IC1 is connected to one end of resistance R 6,The other end of resistance R 6 is connected to the voltage adjustment end of low-dropout regulator IC1, the other end of resistance R 6Also be connected to the bypass output negative wire of power conversion circuit by resistance R 7, low-dropout regulator IC1 simultaneouslyOutput plus terminal and the bypass output negative wire of power conversion circuit between also string have capacitor C 3, low-dropout regulatorPressure reduction output between the output plus terminal of IC1 and the bypass of power conversion circuit output negative wire is described multichannelOutput module power supply is the bypass output voltage of lower electric sequential control circuit preferentially, and the main road of power conversion circuit is defeatedGo out to be the preferentially main road output voltage of lower electric sequential control circuit of described multichannel output module power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201218000043.1A CN106134501B (en) | 2012-02-21 | 2012-02-21 | A kind of multichannel output module power supply is lower electric sequential control circuit preferentially |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201218000043.1A CN106134501B (en) | 2012-02-21 | 2012-02-21 | A kind of multichannel output module power supply is lower electric sequential control circuit preferentially |
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| CN106134501B true CN106134501B (en) | 2014-05-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103845333A (en) * | 2012-12-07 | 2014-06-11 | 天津市汉康医药生物技术有限公司 | Novel use of avanafil |
| CN107070199A (en) * | 2016-12-08 | 2017-08-18 | 北京卫星制造厂 | A kind of multiple-channel output modular power source output voltage isolates interlocking control circuit |
| CN109067171A (en) * | 2018-08-28 | 2018-12-21 | 广州金升阳科技有限公司 | Multiple-output electric power |
-
2012
- 2012-02-21 CN CN201218000043.1A patent/CN106134501B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103845333A (en) * | 2012-12-07 | 2014-06-11 | 天津市汉康医药生物技术有限公司 | Novel use of avanafil |
| CN107070199A (en) * | 2016-12-08 | 2017-08-18 | 北京卫星制造厂 | A kind of multiple-channel output modular power source output voltage isolates interlocking control circuit |
| CN107070199B (en) * | 2016-12-08 | 2019-03-26 | 北京卫星制造厂 | A kind of multiple-channel output modular power source output voltage isolation interlocking control circuit |
| CN109067171A (en) * | 2018-08-28 | 2018-12-21 | 广州金升阳科技有限公司 | Multiple-output electric power |
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