CN102637054B - 50-ampere power consumption balanced-type high-power constant-current source - Google Patents
50-ampere power consumption balanced-type high-power constant-current source Download PDFInfo
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- CN102637054B CN102637054B CN 201210118841 CN201210118841A CN102637054B CN 102637054 B CN102637054 B CN 102637054B CN 201210118841 CN201210118841 CN 201210118841 CN 201210118841 A CN201210118841 A CN 201210118841A CN 102637054 B CN102637054 B CN 102637054B
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Abstract
The invention discloses a 50-ampere power consumption balanced-type high-power constant-current source and belongs to the technical field of electronic equipment. The constant-current source is structurally characterized in that a voltage control module (1) generates continuous adjustable voltage signals VC for controlling a transconductance amplifier (3), the transconductance amplifier (3) generates a constant current signal for driving a load (5), a safety protection circuit module (4) provides security protection for the load, and the output port VA of the voltage control module (1) and the output port VF of the transconductance amplifier module (3) are connected to the mode selecting input end of an output display module (2). The invention provides a constant-current source for driving a high-power semiconductor laser array, and the maximum output current of the constant-current source can be up to 50 amperes; and the constant-current source is of a power consumption balanced-type structure, so that the power loss and heat are uniformly dispersed and timely discharged and then not accumulated, and the redundancy of a constant-current driver is enhanced, thereby improving the stability, reliability and maximum output current of the high-power constant-current source.
Description
Technical field
The invention belongs to technical field of electronic equipment, particularly a kind of 50 amperes of power consumption balance-type high power constant-current sources.
Background technology
Along with the multifunction that continuous increase and the energy of electric energy consumption utilizes form, large current technique is the field emerged rapidly aspect a generation at electric energy, transmission, conversion, control.High power constant-current source is as the branch of stabilized power source simultaneously, and scope has a very wide range of applications in the research field of power supply.Yet, much should adopt the occasion of constant current source, still use inadequately stabilized voltage supply, in most cases, the high-precision current source that working current is large still needs user's designed, designed to realize.For this reason in the urgent need to designing practical high power constant-current source, and take the driving that its superior cost performance is all kinds of high power loads complete service is provided.
In disclosed constant-current driving power supply patent; as application number is in 200710056012.6 high power laser diode drivers; major concern be the protection problem to laser diode; what the final stage of driver adopted is the method that single power tube is controlled electric current, can't make maximum output current be restricted, and power attenuation is large and maximum output current that exist is large not; can not be over 10 amperes; and reliability is low, if this power tube of final stage damages, whole instrument can't be worked.
Summary of the invention
The deficiency of the aspects such as the maximum output current that existing high power constant-current source exists greatly due to power attenuation is large not in order to overcome, power device serviceable life is short and system reliability is low, the invention provides a kind of desk-top constant current source instrument that drives high power load, this high power constant-current source adopts power consumption balance-type structure, make the dispersed timely discharge of power attenuation and heat be unlikely to produce accumulation, and the redundance of enhancing constant-flow driver, thereby stability, reliability and the maximum output current of raising high power constant-current source.
Technical matters of the present invention solves by following measures: 50 amperes of power consumption balance-type high power constant-current source structures comprise voltage control module 1, output display module 2, trsanscondutance amplifier 3 and safety protective circuit module 4.In voltage control module 1, voltage reference chip, current-limiting circuit and voltage regulator circuit are connected in turn, voltage reference provides stablizes the stability that accurate reference voltage guarantees the output of high power constant-current source, and voltage regulator circuit is regulated and controlled voltage signal V under current-limiting circuit limits
c.Output display module 2 shows in turn and connects and reach into, the output terminal V of current-limiting circuit in voltage control module 1 by model selection, LED
aoutput terminal V with trsanscondutance amplifier 3
fcontrol voltage as the demonstration of Limited Current value and output current value respectively, be connected to the mode selection terminal of output display module 2.The control signal of safety protective circuit module 4 respectively be connected the trsanscondutance amplifier input end and be connected with load, realize controlling the function of protection high power constant-current source.Load 5 positive terminal are connected with high power voltage stabilized power source, and end of oppisite phase is connected with the balance-type power amplifier module of trsanscondutance amplifier 3.
Concrete technical scheme of the present invention is as follows:
A kind of power consumption balance-type high power constant-current source, structure has voltage control module 1, output display module 2, trsanscondutance amplifier 3,4 four parts of safety protective circuit module; Wherein, the anti-surge protection circuit output terminal of safety protective circuit module 4 is connected with load 5; The control signal output port of the soft start holding circuit of safety protective circuit module 4 is connected with trsanscondutance amplifier 3; The output port V of voltage control module 1
aoutput port V with trsanscondutance amplifier 3
freceive the model selection input end of output display module 2, by output display module 2, show cut-off current and actual current value; The output port V of voltage control module 1
cwith trsanscondutance amplifier 3, be connected, the output terminal of trsanscondutance amplifier 3 is connected with load 5 simultaneously;
Described voltage control module 1 comprises: 1 pin of voltage reference chip U1 meets power supply VCC1,3 pin ground connection, 2 pin are by 3 pin of resistance R 1 order amplifier U2, the 4 pin ground connection of single amplifier U2,7 pin meet power supply VCC1,2 pin are by resistance R 3 ground connection, and 2 pin of single amplifier U2 are by 6 pin of resistance R 2 order amplifier U2, and 6 pin of single amplifier U2 meet potentiometer R
p13 pin, potentiometer R
p11 pin ground connection, 2 pin meet the output port V of voltage control module 1
a, output port V
aconnect the model selection input end of output display module 2, simultaneously potentiometer R
p12 pin by 3 pin of resistance R 4 order amplifier U3, the 4 pin ground connection of single amplifier U3,7 pin meet power supply VCC1,2 pin are by 6 pin of resistance R 5 order amplifier U3,6 pin of single amplifier U3 meet potentiometer R
p23 pin, potentiometer R
p21 pin ground connection, 2 pin meet the output port V of voltage control module 1
c;
Described trsanscondutance amplifier 3 comprises: the 4 pin ground connection of double operational U4A, and 8 pin meet power supply VCC1, and 2 pin meet the output port V of voltage control module 1 by resistance R 6
c, 3 pin meet the output port V of trsanscondutance amplifier 3 by resistance R 7
f, 3 pin of double operational U4A connect 1 pin of double operational U4A by capacitor C 1 simultaneously, and 1 pin of double operational U4A meets N-type Darlington power transistor T by resistance R 8
e1 pin, N-type Darlington power transistor T
e3 pin meet power supply VCC1,2 pin are by resistance R 9 ground connection, 2 pin simultaneously again with one group of precision resistance R that parameter is identical
b1～R
bnin a pin of each resistance be connected, precision resistance R
b1～R
bnin each resistance another pin respectively in the N raceway groove dipole power transistor T1～Tn identical with one group of model transistorized 1 pin be connected, in N raceway groove dipole power transistor T1～Tn, each transistorized 3 pin is received together, and connect the negative pole of load 5, the positive pole of load 5 meets power supply VCC2, and in N raceway groove dipole power transistor T1～Tn, each transistorized 2 pin is respectively by one group of accurate power resistor R that parameter is identical
e1～R
enin a resistance eutral grounding, simultaneously in N raceway groove dipole power transistor T1～Tn each transistorized 2 pin again respectively by one group of resistance R that parameter is identical
a1～R
anin a resistance connect 5 pin of double operational U4B, 5 pin of double operational U4B are by resistance R 10 ground connection, 6 pin are by resistance R 11 ground connection, and 6 pin of double operational U4B connect again 7 pin of double operational U4B by resistance R 12, and 7 pin of double operational U4B meet the output port V of trsanscondutance amplifier 3
f, output port V
fconnect the model selection input end of output display module 2.
Described output display module 2, safety protective circuit module 4 can realize that the circuit of the functions such as output display, Anti-surging surge protection and soft start protection is identical or close with existing; also can implement by circuit of the present invention, concrete structure is shown in embodiment 4 and embodiment 5.
Described load 5 is the loads that need to be powered with power consumption balance-type high power constant-current source of the present invention, can be the device that large power laser diode array etc. needs high-power constant current to drive.
In voltage control module 1 of the present invention, the model of components and parts, parameter can be chosen as: reference voltage chip U1 model is MC1403, the model of single amplifier U2, single amplifier U3 is Op07, the value of resistance R 1 is 15k Ω, the value of resistance R 2, resistance R 3 is 30k Ω, the value of resistance R 4, resistance R 5 is 10k Ω, potentiometer R
p1, potentiometer R
p2value be 100k Ω, power supply VCC1 is 15V, rated power 30W.
In trsanscondutance amplifier 3 of the present invention, the model of components and parts used, parameter can be chosen as: double operational U4A, double operational U4B are integrated double operational LM358, N-type Darlington power transistor T
emodel is TIP132, the value of capacitor C 1 is 4.7 μ F, the pipe number of N raceway groove dipole power transistor array T1～Tn is 12, model is 2N3055, resistance R 6, resistance R 7 resistances are 10k Ω, the resistance of resistance R 8, resistance R 9 is 1k Ω, and the resistance of resistance R 10～resistance R 12 is 10k Ω, electric resistance array R
a1～R
anthe resistance number be 12, resistance is 10k Ω, electric resistance array R
b1～R
bnthe resistance number be 12, resistance is 100 Ω, accurate sample resistance array R
e1～R
enthe resistance number be 12, resistance is 0.1 Ω, power supply VCC1 is 15V, rated power 30W, power supply VCC2 is 12V, rated power 1000W.
50 amperes of power consumption balance-type high power constant-current sources of the present invention have following beneficial effect:
1, adopt the design of power consumption balance-type, maximum output current can reach 50 amperes, and adjustable continuously;
2,, about voltage control module 1, control voltage signal V
ccomplete controlled and deboost signal V
a, when guaranteeing that output current changes in controlled range, reduce the components and parts number of circuit, reduce design cost.
3, about trsanscondutance amplifier 3, adopt compound darlington structure, the high-gain power device of its driving stage, for output stage provides enough large driving signal, has increased the open-loop gain of feedforward amplifying circuit simultaneously, has improved the stability of feedback system; Output stage adopts the power device parallel current-equalizing circuit, and total output current is disperseed, and power attenuation is shared by a plurality of power devices.Make like this heat discharge in time and be unlikely to produce accumulation, and strengthen the redundance of driver, therefore can greatly improve the reliability under power supply high load capacity duty, and accurate power resistor array R
e1～R
enin, each accurate power resistor unit is connected in the emitter terminal of parallel current-sharing branch road, it is the sample resistance of feedback control loop, it is also the emitter flows resistance of parallel circuit, power consumption balanced intensity while further improving power amplification, sample resistance array in parallel can reduce its power attenuation at the load output terminal simultaneously.
The accompanying drawing explanation:
Fig. 1 is the circuit one-piece construction block diagram of 50 amperes of power consumption balance-type high power constant-current sources of the present invention.
Fig. 2 is the voltage control module circuit of 50 amperes of power consumption balance-type high power constant-current sources of the present invention.
Fig. 3 is the transconductance amplifier circuit figure of 50 amperes of power consumption balance-type high power constant-current sources of the present invention.
Fig. 4 is embodiment 4 output display module principle block diagrams
Fig. 5 is embodiment 5 Anti-surging impact protection circuit theory diagrams
Fig. 6 is embodiment 5 soft start holding circuit theory diagrams
Embodiment
The concrete structure of each several part circuit of the present invention is described by reference to the accompanying drawings.In each embodiment, the preferred parameter of each circuit component has marked in the bracket of element back.
Power consumption balance-type high power constant-current source of the present invention, structure has: voltage control module 1, output display module 2, trsanscondutance amplifier 3, safety protective circuit module 4, structured flowchart as shown in Figure 1, the output port V of voltage control module 1 wherein
cbe connected to trsanscondutance amplifier 3, by trsanscondutance amplifier 3, produce required constant current signal, drive load 5,4 pairs of loads of safety protective circuit module provide safeguard protection, simultaneously, and the output port V of voltage control module 1
aoutput port V with trsanscondutance amplifier module 3
freceive the model selection input end of output display module 2, by output display module 2, show cut-off current and actual current value.
As shown in Figure 2, voltage control module 1 comprises: 1 pin of voltage reference chip U1 (MC1403) meets power supply VCC1 (+15V, rated power 30W), 3 pin ground connection, 2 pin are by 3 pin of resistance R 1 (15k Ω) order amplifier U2 (OP07), the 4 pin ground connection of single amplifier U2 (OP07), 7 pin meet power supply VCC1 (+15V, rated power 30W), 2 pin are by resistance R 3 (30k Ω) ground connection, 2 pin of single amplifier U2 (OP07) are by 6 pin of resistance R 2 (30k Ω) order amplifier U2 (OP07), and 6 pin of single amplifier U2 (OP07) meet potentiometer R
p13 pin of (100k Ω), potentiometer R
p1the 1 pin ground connection of (100k Ω), 2 pin meet the output port V of this voltage control module 1
a, output port V
aconnect the model selection input end of output display module 2, simultaneously potentiometer R
p12 pin of (100k Ω) are by 3 pin of resistance R 4 (10k Ω) order amplifier U3 (OP07), the 4 pin ground connection of single amplifier U3 (OP07), 7 pin meet power supply VCC1 (+15V, rated power 30W), 2 pin connect 6 pin by resistance R 5 (10k Ω), and 6 pin meet potentiometer R
p23 pin of (100k Ω), potentiometer R
p2the 1 pin ground connection of (100k Ω), 2 pin meet the output port V of voltage control module 1
c.
As shown in Figure 3, trsanscondutance amplifier 3 comprises: the 4 pin ground connection of double operational U4A (LM358), and 8 pin meet power supply VCC1 (+15V, rated power 30W), and 2 pin meet the output port V of voltage control module 1 by resistance R 6 (10k Ω)
c, connecing the control signal output port of soft start holding circuit in safety protective circuit module 4,3 pin meet the output port V of trsanscondutance amplifier 3 by resistance R 7 (10k Ω)
f, 3 pin of double operational U4A (LM358) connect 1 pin of double operational U4A (LM358) by capacitor C 1 (4.7 μ F) simultaneously, and 1 pin of double operational U4A (LM358) meets N-type Darlington power transistor T by resistance R 8 (1k Ω)
e(TIP132) 1 pin, N-type Darlington power transistor T
e(TIP132) 3 pin meet power supply VCC1 (+15V, rated power 30W), and 2 pin are by resistance R 9 (1k Ω) ground connection, and 2 pin are simultaneously again respectively by the precision resistance R of 12 parameters identical (100 Ω)
b1～R
b12with 1 pin of the N raceway groove dipole power transistor T1～T12 of 12 models identical (2N3055), be connected, in N raceway groove dipole power transistor T1～T12, each transistorized 3 pin is received together, connecing load 5 (can be large power laser diode array, rated current is 50 amperes) negative pole, the positive pole of load 5 meets power supply VCC2 (+12V, rated power 1000W), in N raceway groove dipole power transistor T1～T12, each transistorized 2 pin passes through respectively precision resistance array R
e1～R
ena precision resistance ground connection in (being the accurate sample resistance of 0.1 Ω), in N raceway groove dipole power transistor T1～T12, each transistorized 2 pin passes through respectively again electric resistance array R simultaneously
a1～R
a12a resistance in (value of each resistance is 10k) connects 5 pin of double operational U4B (LM358), 5 pin of double operational U4B (LM358) are by resistance R 10 (10k Ω) ground connection, 6 pin are by resistance R 11 (10k Ω) ground connection, 6 pin connect 7 pin by resistance R 12 (10k Ω) again, and 7 pin meet the output port V of trsanscondutance amplifier 3
f, output port V
fconnect the model selection input end of output display module 2.Because the mode that adopts the power transistor parallel connection that 12 models are identical in trsanscondutance amplifier 3 drives load, therefore make maximum output current greatly improve, reach as high as in the present invention 50 amperes, improved the reliability of instrument work simultaneously.
As shown in Figure 4, output display module 2 shows that by model selection, LED connection reaches in turn, and model selection has two input ends, is used for respectively connecing the output port V of voltage control module 1
aoutput port V with trsanscondutance amplifier 3
f, select the signal that will show by model selection and deliver to the LED demonstration, to show Limited Current value and actual current value.
Safety protective circuit module 4 comprises Anti-surging surge protection and soft start protection:
As shown in Figure 5, anti-surge circuit comprises a RC charging circuit be comprised of resistance R 13 (200k Ω) and capacitor C 2 (1 μ F), a N channel enhancement field effect transistor Q1 (2skl458), a normally closed solid-state relay.Wherein the grid of field effect transistor Q1 (2skl458) is connected with capacitor C 2 (1 μ F) with resistance R 13 (200k Ω), capacitor C 2 (1 μ F) other end ground connection, and the drain electrode of field effect transistor Q1 is connected with relay, the source ground of field effect transistor Q1.Relay two normal-closed ends are in parallel with the load two ends.
As shown in Figure 6, soft starting circuit comprises the triode T1 (9012) of a positive-negative-positive, a RC discharge circuit consisted of resistance R 15 (20k Ω), capacitor C 3 (1 μ F), a N channel enhancement field effect transistor Q2 (2skl458).Wherein the grid of field effect transistor Q2 (2skl458) is connected with capacitor C 3 (1 μ F) with resistance R 15 (20k Ω), the other end ground connection of the other end of resistance R 15 (20k Ω) and capacitor C 3 (1 μ F); The drain electrode of field effect transistor Q2 (2skl458) is connected with the input end of trsanscondutance amplifier as control signal, and with the output terminal V of voltage control module 1
cbe connected, the source ground of field effect transistor Q2 (2skl458); The base stage of triode T1 (9012) is connected with gauge tap through resistance R 14 (2M Ω), the emitter of triode T1 (9012) connects power supply VCC1, and the collector of triode T1 (9012) connects the grid of field effect transistor Q2 (2skl458).
Claims (1)
1. one kind 50 amperes power consumption balance-type high power constant-current sources, its structure has output display module (2), safety protective circuit module (4); It is characterized in that, structure also has voltage control module (1) and trsanscondutance amplifier (3); Wherein, the anti-surge protection circuit output terminal of safety protective circuit module (4) is connected with load (5); The control signal output port of the soft start holding circuit of safety protective circuit module (4) is connected with trsanscondutance amplifier (3); The output port V of voltage control module (1)
aand the output port V of trsanscondutance amplifier (3)
freceive respectively two input ends of the model selection of output display module (2), by output display module (2), show cut-off current and actual current value; The output port V of voltage control module (1)
cwith trsanscondutance amplifier (3), be connected, the output terminal of trsanscondutance amplifier (3) is connected with load (5) simultaneously;
Described voltage control module (1) comprising: 1 pin of voltage reference chip U1 meets power supply VCC1,3 pin ground connection, 2 pin are by 3 pin of resistance R 1 order amplifier U2, the 4 pin ground connection of single amplifier U2,7 pin meet power supply VCC1,2 pin are by resistance R 3 ground connection, and 2 pin of single amplifier U2 are by 6 pin of resistance R 2 order amplifier U2, and 6 pin of single amplifier U2 meet potentiometer R
p13 pin, potentiometer R
p11 pin ground connection, 2 pin are as the output port V of voltage control module (1)
a, output port V
aconnect an input end of the model selection of output display module (2), simultaneously potentiometer R
p12 pin by 3 pin of resistance R 4 order amplifier U3, the 4 pin ground connection of single amplifier U3,7 pin meet power supply VCC1,2 pin are by 6 pin of resistance R 5 order amplifier U3,6 pin of single amplifier U3 meet potentiometer R
p23 pin, potentiometer R
p21 pin ground connection, 2 pin are as the output port V of voltage control module (1)
c;
Described trsanscondutance amplifier (3) comprising: the 4 pin ground connection of double operational U4A, and 8 pin meet power supply VCC1, and 2 pin meet the output port V of voltage control module (1) by resistance R 6
c, 3 pin connect 7 pin of double operational U4B by resistance R 7, and 3 pin of double operational U4A connect 1 pin of double operational U4A by capacitor C 1 simultaneously, and 1 pin of double operational U4A meets N-type Darlington power transistor T by resistance R 8
e1 pin, N-type Darlington power transistor T
e3 pin meet power supply VCC1,2 pin are by resistance R 9 ground connection, 2 pin simultaneously again with one group of precision resistance R that parameter is identical
b1～R
bnin a pin of each resistance be connected, precision resistance R
b1～R
bnin each resistance another pin respectively in the N raceway groove dipole power transistor T1～Tn identical with one group of model transistorized 1 pin be connected, in N raceway groove dipole power transistor T1～Tn, each transistorized 3 pin is received together, and connect the negative pole of load (5), the positive pole of load (5) meets power supply VCC2, and in N raceway groove dipole power transistor T1～Tn, each transistorized 2 pin is respectively by one group of accurate power resistor R that parameter is identical
e1～R
enin a resistance eutral grounding, simultaneously in N raceway groove dipole power transistor T1～Tn each transistorized 2 pin again respectively by one group of resistance R that parameter is identical
a1～R
anin a resistance connect 5 pin of double operational U4B, 5 pin of double operational U4B are by resistance R 10 ground connection, 6 pin are by resistance R 11 ground connection, and 6 pin of double operational U4B connect again 7 pin of double operational U4B by resistance R 12, and 7 pin of double operational U4B are as the output port V of trsanscondutance amplifier (3)
f, output port V
fconnect another input end of the model selection of output display module (2);
Voltage reference chip U1 model used in described voltage control module (1) is MC1403, the model of single amplifier U2, single amplifier U3 is Op07, and the value of resistance R 1 is 15k Ω, and the value of resistance R 2, resistance R 3 is 30k Ω, the value of resistance R 4, resistance R 5 is 10k Ω, potentiometer R
p1, potentiometer R
p2value be 100k Ω, power supply VCC1 is 15V, rated power 30W;
Double operational U4A, double operational U4B used in described trsanscondutance amplifier (3) are integrated double operational LM358, N-type Darlington power transistor T
emodel is TIP132, the value of capacitor C 1 is 4.7 μ F, the pipe number of N raceway groove dipole power transistor T1～Tn is 12, model is 2N3055, resistance R 6, resistance R 7 resistances are 10k Ω, the resistance of resistance R 8, resistance R 9 is 1k Ω, and the resistance of resistance R 10～resistance R 12 is 10k Ω, resistance R
a1～R
anthe resistance number be 12, resistance is 10k Ω, resistance R
b1～R
bnthe resistance number be 12, resistance is 100 Ω, accurate power resistor R
e1～R
enthe resistance number be 12, resistance is 0.1 Ω, power supply VCC1 is 15V, rated power 30W, power supply VCC2 is 12V, rated power 1000W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210118841 CN102637054B (en) | 2012-04-21 | 2012-04-21 | 50-ampere power consumption balanced-type high-power constant-current source |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN 201210118841 CN102637054B (en) | 2012-04-21 | 2012-04-21 | 50-ampere power consumption balanced-type high-power constant-current source |
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| CN102637054A CN102637054A (en) | 2012-08-15 |
| CN102637054B true CN102637054B (en) | 2013-12-25 |
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| CN104052068B (en) * | 2014-05-30 | 2016-08-24 | 安徽三和电力技术有限公司 | Mixing reactive power generator output circuit |
| CN108767828A (en) * | 2018-07-20 | 2018-11-06 | 浙江机电职业技术学院 | DA powers on anti-impact circuit in a kind of microcontroller |
| CN112817359B (en) * | 2020-12-29 | 2021-12-21 | 中船重工安谱（湖北）仪器有限公司 | High-stability constant current source with wide load range |
| TWI790104B (en) * | 2022-01-24 | 2023-01-11 | 神雲科技股份有限公司 | Soft-start discharging circuit |
| CN114243436B (en) * | 2022-02-24 | 2022-05-27 | 武汉锐科光纤激光技术股份有限公司 | Linear constant-current driving source of fiber laser |
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| CN2745097Y (en) * | 2004-08-03 | 2005-12-07 | 武汉凌云光电科技有限责任公司 | High-power semiconductor laser accurate current control device |
| JP5233136B2 (en) * | 2007-03-14 | 2013-07-10 | 株式会社リコー | Light-emitting diode driving device using constant current circuit and constant current circuit |
| US20090146732A1 (en) * | 2007-12-05 | 2009-06-11 | Wei-Kuo Wu | Constant Current Source Circuit |
| CN201562186U (en) * | 2009-04-01 | 2010-08-25 | 贵州省机电研究设计院 | High-precision high-current current equalization controller with parallelly-connected MOS power tubes |
| CN101916962B (en) * | 2010-09-02 | 2011-11-23 | 吉林大学 | Equal-current synthetic high-power constant current power supply circuit |
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