CN1866712A - High-power high-precision switch linear combined manostat - Google Patents
High-power high-precision switch linear combined manostat Download PDFInfo
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- CN1866712A CN1866712A CN 200610040061 CN200610040061A CN1866712A CN 1866712 A CN1866712 A CN 1866712A CN 200610040061 CN200610040061 CN 200610040061 CN 200610040061 A CN200610040061 A CN 200610040061A CN 1866712 A CN1866712 A CN 1866712A
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Abstract
The invention discloses a high power high accuracy switching linear compound potentiostat, which comprises the following parts: one output voltage reference forming unit and one power conversion unit, wherein the output voltage reference forming unit is provided power by input terminal power, which includes TL431 precision voltage-stabiliser tube N1, bleeder circuit conposed of resistance R1, R2 and adjustable resistance VR1; the power conversion unit is composed of fluidic devices; the collector connects input end; the base electrode connects to reference voltage signal; the emitting electrode connects to stabilivolt outlet end; the voltage reference forming unit can output continuance adjustable reference voltage signal with high accuracy, low noise, which outputs stabilised initialize voltage according to given reference voltage signal; the power conversion unit works in marginal saturated exlinear condition; the input and output voltage difference reduces to 1V; the output current can reach 5A; the stabilivolt accuracy can get 0.5%.
Description
Technical field:
The invention belongs to the electric and electronic power converter technique, the specific design high-power high-precision switch linear combined manostat.
Background technology:
Modern electronic equipment, the frequent DC power supply that needs several different electric pressures nearly all needs 5V or 3.3V power supply as IC memory and CPU in the communication apparatus; A/D, D/A needs ± 12V or ± the 5V power supply; LCD 5V, 12V or 24V power supply or the like of needing backlight.Except different electric pressure requirements, some occasion also needs high voltage stability precision and the output of big electric current, guaranteeing the normal reliable work of equipment, and the high-precision high-power voltage stabilizing chip market that has a wide range of applications.
Existing multiple such chip with voltage stabilizing output function, as the low pressure reduction series of LDC voltage stabilizing chip, exportable high accuracy voltage stabilizing output has only the hundreds of milliampere but output current is less; The LM78XX of extensive application, LM79XX series regulator block maximum output current also can only reach 1A, and the basic pressure reduction of 2V is arranged, the power consumption height, heating is big; Several amperes of bigger if desired operating currents generally adopt external high-power adjustment pipe to expand stream, and what bring thus is the reduction of the precision of voltage regulation; Or adopting the same model same specification, multicore sheet same polarity is in parallel to expand stream mode, but realizes difficulty of automatic current equalizing between each monolithic.Chinese patent ZL00112420.X does not have by the power supply of input power supply, the function of exportable high accuracy, the continuous adjustable voltage reference signal of low noise.
Summary of the invention:
Purpose of the present invention is exactly will overcome above problem and high-power high-precision switch linear combined manostat that a kind of high accuracy, high-power, low pressure reduction, low-power consumption are provided.
Technical scheme of the present invention is achieved like this: high-power high-precision switch linear combined manostat, it comprises that power input 1, output voltage reference signal form unit 2, power conversion unit 3, output end of pressure-stabilizing 5, be characterized in: described output voltage benchmark forms unit 2 by the power supply of input 1 power supply, and it comprises the accurate voltage-stabiliser tube N of TL431
1, resistance R
1, R
2With adjustable resistance VR
1The bleeder circuit of forming; Described power conversion unit 3 works in critical saturated inclined to one side linear condition, is made up of fluidic devices, and its collector electrode connects input 1, and base stage connects reference voltage signal, and emitter connects output end of pressure-stabilizing 5.
The present invention forms the unit by the output voltage benchmark makes power tube work in the special state of critical saturated inclined to one side linearity, realizes high accuracy, the output of powerful DC voltage-stabilizing.It can be higher than existing general 78XX, under the prerequisite of 79XX series pressurizer efficient, obtains powerful voltage stabilizing output, makes output current bring up to 5A; Because output tracking voltage reference signal, this circuit have extremely low own noise and higher input power supply ripple suppresses ability; High-precision voltage regulation result, the precision of voltage regulation can reach 0.5%; Obtain very strong anti-load disturbance ability and fast response characteristic simultaneously.By voltage reference adjustable side scalable reference voltage signal size, make the different burning voltage of pressurizer output.The present invention can make the pressurizer output high accuracy burning voltage consistent with reference voltage signal, and the input power supply ripple is had extremely strong inhibitory action, has realized high-power, high accuracy and the power reguirements that hangs down interference.Compare with 78XX, 79XX series pressurizer, the basic pressure reduction of input and output drops to 1V, is a kind of pressurizer of low pressure reduction type, has reduced the oneself power consumption of pressurizer, has higher efficient.
Description of drawings:
Fig. 1 is a functional-block diagram of the present invention.
Fig. 2 is a kind of combination voltage stabilizing circuit that the present invention realizes positive polarity voltage stabilizing output.
Fig. 3 is the another kind combination voltage stabilizing circuit that the present invention realizes negative polarity voltage stabilizing output.
Among the figure: 1-power input 2-output voltage benchmark forms the unit
3-power conversion unit 4-voltage reference adjustable side
5-output 6-common 7-load
T
1-NPN type fluidic devices T
2-positive-negative-positive fluidic devices
R
1, R
2, R
3-resistance VR
1-adjustable resistance N
1The accurate voltage-stabiliser tube of-TL431
Embodiment:
In the accompanying drawing 1, by the direct voltage that power input 1 input range changes within the specific limits, input voltage can comprise bigger ripple composition.This voltage one tunnel forms unit 2 output high accuracy, stable output voltage reference signal through the output voltage benchmark, and another road is by power conversion unit 3, for load provides power output.High efficiency for guaranteed output converting unit 3, the input voltage of input 1 should a little more than power conversion unit 3 intermediate power amplifier spares guaranteeing adequate food and pressure drop and standard output voltage sum, and can change within the specific limits, make the power device of power conversion unit 3 work in the special state of critical saturated inclined to one side linearity, thereby the pipe loss be similar on off state, but follow the rule of linear amplifier circuit emitter follower; The voltage-tracing reference voltage signal of output 5 outputs has high-precision voltage stabilizing output.Output to the voltage in the load 7 and the basic pressure reduction of input 1 supply voltage and can be controlled in 1V, realized low pressure reduction stabilized voltage characteristic, reduced the own loss and the heating of pressurizer.Form the reference voltage signal size that unit 2 is exported by voltage reference adjustable side 4 adjustable output voltage benchmark, power controlling converting unit 3 makes the different burning voltage of pressurizer output again.
In the accompanying drawing 2, input 1 is imported the positive polarity direct voltage, and downgrades voltage by the stable positive polarity of output 5 output high accuracy.The accurate voltage-stabiliser tube N of TL431
1, resistance R
1, R
2With adjustable resistance VR
1Form the output voltage benchmark and form unit 2.Input voltage is through resistance R
1, R
2With adjustable resistance VR
1Divide and be sent to accurate voltage-stabiliser tube N
1R end and accurate voltage-stabiliser tube N
1After the accurate benchmark of inner 2.5V relatively amplifies, rectify the high-precision output voltage reference voltage signal V of output at K
Ref, this voltage signal amplitude is a little less than power input voltage.Its precision of voltage regulation and quality have determined the output voltage precision of voltage regulation and the quality of pressurizer.Regulate adjustable resistance VR
1Size, can be to voltage reference signal V
RefRegulate.
V
o＝V
ref-V
be (1)
V wherein
BeBe power device T
1Base-emitter-base bandgap grading between voltage.Adopt fluidic devices, output current I
cChange and show as base current I
bChange, base-radio is pressed V
BeSubstantially constant is constant, by formula (1) V as can be known
oAlso basic maintenance is invariable, has the high precision of voltage regulation.The power tube output current can reach 5A, and the base drive electric current is tens milliamperes of levels, and the power tube pressure drop can be reduced to 1V.Like this, the basic pressure drop loss of driving power and power tube sum is well below the loss of serial linear voltage regulators such as existing LM78XX; Both realize high accuracy, powerful voltage stabilizing output, reduced the loss of pressurizer again, improved pressurizer efficient.
In the accompanying drawing 3, input 1 is imported the negative polarity direct voltage, and downgrades voltage by the stable negative polarity of output 5 output high accuracy.Power conversion unit 3 is by positive-negative-positive fluidic devices T
2Constitute, the output voltage benchmark forms unit 2 output voltage V
RefTo power tube T
2Execute control, can be load the negative polarity stabilized voltage power supply is provided.Other principle and function are identical with accompanying drawing 2.
The present invention is a kind of expansion to the ZL00112420.X patent of invention, it is expanded the voltage reference mainly show by the power input power supply and forms the exportable high accuracy in unit, low noise continuous adjustable reference voltage signal, and and works in the combination of power conversion unit of critical saturated inclined to one side linear condition.
Claims (3)
1, high-power high-precision switch linear combined manostat, it comprises that power input (1), output voltage reference signal form unit (2), power conversion unit (3), output end of pressure-stabilizing (5), it is characterized in that: described output voltage benchmark forms unit (2) by the power supply of input (1) power supply, and it comprises the accurate voltage-stabiliser tube N of TL431
1, resistance R
1, R
2With adjustable resistance VR
1The bleeder circuit of forming; Described power conversion unit (3) works in critical saturated inclined to one side linear condition, is made up of fluidic devices, and its collector electrode connects input (1), and base stage connects reference voltage signal, and emitter connects output end of pressure-stabilizing (5).
2, high-power high-precision switch linear combined manostat according to claim 1 is characterized in that: described power conversion unit (3) is made up of the single NPN type fluidic devices of realizing positive polarity voltage stabilizing output.
3, high-power high-precision switch linear combined manostat according to claim 1 is characterized in that: described power conversion unit (3) is made up of the single positive-negative-positive fluidic devices of realizing negative polarity voltage stabilizing output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100400616A CN100444506C (en) | 2006-04-25 | 2006-04-25 | High-power high-precision switch linear combined manostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100400616A CN100444506C (en) | 2006-04-25 | 2006-04-25 | High-power high-precision switch linear combined manostat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1866712A true CN1866712A (en) | 2006-11-22 |
| CN100444506C CN100444506C (en) | 2008-12-17 |
Family
ID=37425617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100400616A Expired - Fee Related CN100444506C (en) | 2006-04-25 | 2006-04-25 | High-power high-precision switch linear combined manostat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100444506C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123511A (en) * | 2013-01-23 | 2013-05-29 | 浙江工业大学 | Hybrid type voltage-stabilized power supply |
| CN103236781A (en) * | 2013-04-21 | 2013-08-07 | 中国科学院光电技术研究所 | High-efficiency linear high-voltage stabilized power supply |
| WO2015196426A1 (en) * | 2014-06-26 | 2015-12-30 | Thomson Licensing | Overvoltage protection circuit and electric apparatus |
| CN110165889A (en) * | 2019-05-21 | 2019-08-23 | 珠海英搏尔电气股份有限公司 | A kind of low dropout voltage regulator device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4658201A (en) * | 1985-12-30 | 1987-04-14 | Gte Communication Systems Corporation | Output circuit for diode-or connected positive three terminal voltage regulators |
| JPH04259017A (en) * | 1991-02-14 | 1992-09-14 | Brother Ind Ltd | Dc power unit |
| CN2101346U (en) * | 1991-07-05 | 1992-04-08 | 吴建新 | Silicon rectified ac generator voltage regulator for automobile |
| DE4422262A1 (en) * | 1994-06-24 | 1996-01-04 | Siemens Ag | Circuit arrangement for generating a constant output voltage |
| CN2338787Y (en) * | 1998-03-17 | 1999-09-15 | 杨惠强 | Large current output voltage stabilizer |
-
2006
- 2006-04-25 CN CNB2006100400616A patent/CN100444506C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123511A (en) * | 2013-01-23 | 2013-05-29 | 浙江工业大学 | Hybrid type voltage-stabilized power supply |
| CN103123511B (en) * | 2013-01-23 | 2014-11-12 | 浙江工业大学 | Hybrid type voltage-stabilized power supply |
| CN103236781A (en) * | 2013-04-21 | 2013-08-07 | 中国科学院光电技术研究所 | High-efficiency linear high-voltage stabilized power supply |
| WO2015196426A1 (en) * | 2014-06-26 | 2015-12-30 | Thomson Licensing | Overvoltage protection circuit and electric apparatus |
| CN110165889A (en) * | 2019-05-21 | 2019-08-23 | 珠海英搏尔电气股份有限公司 | A kind of low dropout voltage regulator device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100444506C (en) | 2008-12-17 |
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Granted publication date: 20081217 Termination date: 20110425 |