CN103840441A - Ultra-stable quick-response linear shunting circuit - Google Patents
Ultra-stable quick-response linear shunting circuit Download PDFInfo
- Publication number
- CN103840441A CN103840441A CN201210481075.7A CN201210481075A CN103840441A CN 103840441 A CN103840441 A CN 103840441A CN 201210481075 A CN201210481075 A CN 201210481075A CN 103840441 A CN103840441 A CN 103840441A
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistance
- triode
- shunt circuit
- linear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention provides an ultra-stable quick-response linear shunting circuit. The circuit comprises a negative feedback linear shunting circuit, a negative voltage protection circuit and a transient inhibition compensating circuit. The negative feedback linear shunting circuit regulates an operating point of a triode linearly through negative feedbacks on an output voltage to achieve linear shunting of a constant current source. The negative voltage protection circuit protects the shunting triode. The transient inhibition compensating circuit performs frequency compensation for and self excitation inhibition on the circuit, eliminates circuit oscillation, reduces output ripples, and provides a high-quality load voltage for a load. According to the technical scheme, the circuit is linearly steady in working and quick in response; interference signals and self-excited oscillation in the circuit are both inhibited; and thus the reliability is high.
Description
Technical field
The present invention relates to the application of electronic component, particularly a kind of super-stable state responds linear shunt circuit fast.
Background technology
In the power-supply system of spacecraft, solar battery array provides power supply in illumination period for spacecraft load.Solar battery array is equivalent to a constant-current source in operation principle, when its output current exceeds load while needing, can cause output voltage to raise, and load voltage requires fluctuation range very little on illumination period spacecraft, for making spacecraft can obtain stable load voltage in illumination period, shunt regulating circuit, as one of spacecraft important part, divides the solar battery array that pours off unnecessary output current in illumination period, can keep solar battery array output voltage stabilization.
The load ratio that spacecraft carries is more special, and it exists with modular form, and the power consumption of each module is all larger.In the time that a load module starts start or close, can produce greater impact to load current, also affect the shunt current value of shunt circuit, and then have influence on the stability that solar battery array output voltage is load voltage simultaneously.For guaranteeing that spacecraft obtains the load voltage of high-quality in illumination period, guarantee the normal work of load, shunt circuit needs stable working, in the time that load current suddenlys change, circuit can respond fast, shunt current changes continuously, occur without the abnormal conditions such as saltus step, vibration, to shunt circuit, design has proposed high requirement for this.
Linear shunt circuit refers in shunt circuit and uses isocon to shunt solar battery array, and isocon has the multiple choices such as metal-oxide-semiconductor, triode, and this circuit because has the features such as output voltage ripple is little and is widely used on spacecraft.But existing linear shunt circuit is generally directly in circuit design, isocon is shunted to driving, isocon working point is stable not, cause the generation of the situations such as shunt circuit interference, self-excitation, for addressing this problem, the present invention proposes the linear shunt circuit of a kind of super-stable state, working point is more stable at work to make isocon, and response speed is faster, and the ability such as anti-interference, self-excitation is stronger.
Summary of the invention
The problem that the present invention solves is to provide a kind of super-stable state and responds fast linear shunt circuit, stable not to solve existing linear shunt circuit isocon working point, causes the situations such as shunt circuit interference, self-excitation to occur.
For addressing the above problem, the invention provides a kind of super-stable state and respond fast linear shunt circuit, comprising: the linear shunt circuit of negative feedback, negative pressure protective circuit and transient state suppress compensating circuit; The linear shunt circuit of described negative feedback is by output voltage, negative feedback comes the working point of linear regulation shunting triode, to reach the object of constant-current source being carried out to linear shunting; Described negative pressure protective circuit is protected shunting triode, and described transient state suppresses compensating circuit circuit is carried out to frequency compensation and self-excitation inhibition, eliminates circuit oscillation, reduces output ripple, and the load voltage of high-quality is provided to load.
Further, the linear shunt circuit of described negative feedback comprises computing N1, triode Q1, resistance R 1, R2, R3, R4, NPN type triode Q1; Described resistance R 1 one termination driving voltages, the positive input terminal of other end concatenation operation simultaneously N1 and one end of resistance R 3; Other one end of described resistance R 3 connects the high potential of constant-current source and the collector electrode of triode simultaneously; The electronegative potential ground connection of the emitter of described triode and constant-current source, load is connected in parallel on the two ends of constant-current source; One end of the base stage connecting resistance R4 of described triode, the output of another termination computing N1 of described resistance R 4; One end of the negative input end contact resistance R2 of described computing N1, an other termination reference voltage of described resistance R 2.
Further, described computing N1 is bipolar operational amplifier.
Further, described transient state suppresses compensating circuit and comprises capacitor C 1, C2, C3, resistance R 6; Described capacitor C 1 is connected with negative input end and the output of computing N1 respectively with two ends after R6 serial connection, and the positive-negative power pin of computing N1 is respectively by C2, C3 ground connection.
Further, described negative pressure protective circuit is made up of diode V1 and resistance R 5; After described diode V1 connects with resistance R 5, the positive pole of diode is connected with the base stage of triode, minus earth.
Further, described resistance R 1, R2, R3, R4, R5, R6 are that power is the fixed carbon resister of 0.25W.
Further, described capacitor C 1, C2, C3 are nonpolarity ceramic disc capacitor.
Compared with prior art, technical scheme of the present invention can make linear steady, the fast response time of shunt circuit work, and interference signal and self-oscillation in circuit are all inhibited, and reliability is high.
Accompanying drawing explanation
fig. 1 is that a kind of super-stable state responds linear shunt circuit theory diagram fast.
Embodiment
Hereinafter, the present invention is further elaborated in conjunction with the accompanying drawings and embodiments.
Please refer to Fig. 1, it is a kind of novel linear shunt circuit that super-stable state provided by the invention responds linear shunt circuit fast, and this circuit suppresses compensating circuit by the linear shunt circuit of negative feedback, negative pressure protective circuit and transient state and forms.
The linear shunt circuit of described negative feedback is the major part that super-stable state responds linear shunt circuit fast, formed by amplifier, triode, resistance, by to output voltage, negative feedback comes the working point of linear regulation triode, to reach the object of constant-current source being carried out to linear shunting, this circuit shunting is linear, stable, can respond fast output voltage and change.Particularly, the linear shunt circuit of described negative feedback comprises computing N1, triode Q1, resistance R 1, R2, R3, R4, NPN type triode Q1; Described resistance R 1 one termination driving voltage Vin, the positive input terminal 3 of other end concatenation operation simultaneously N1 and one end of resistance R 3; Other one end of described resistance R 3 connects the collector electrode of high potential Vo and the triode Q1 of constant-current source simultaneously; The electronegative potential ground connection of the emitter of described triode and constant-current source, load is connected in parallel on the two ends of constant-current source; One end of the base stage connecting resistance R4 of described triode, the output of another termination computing N1 of described resistance R 4; One end of the negative input end 4 contact resistance R2 of described computing N1, an other termination reference voltage V ref of described resistance R 2.In the present embodiment, described computing N1 is bipolar operational amplifier, and described resistance R 1, R2, R3 are that power is the fixed carbon resister of 0.25W.
Described transient state suppresses compensating circuit and comprises capacitor C 1, C2, C3, resistance R 6; Described capacitor C 1 is connected with negative input end 2 and the output of computing N1 respectively with two ends after R6 serial connection, and the positive supply pin 7 of computing N1 is by C2 ground connection; The negative supply pin 4 of computing N1 is by C3 ground connection.Described capacitor C 1, C2, C3 are nonpolarity ceramic disc capacitor, the fixed carbon resister that resistance R 6 is 0.25W for power.
Described negative pressure protective circuit is made up of diode V1 and resistance R 5; After described diode V1 connects with resistance R 5, the positive pole of diode is connected with the base stage of triode, minus earth.
Advantage of the present invention comprises: the linear shunt circuit of negative feedback uses computing and feedback divider resistance to carry out linear stable regulation to the shunting working point of triode, feedback resistance directly returns constant-current source Voltage Feedback to driving voltage input, can improve the response speed that shunt circuit changes output voltage.Negative pressure protective circuit is protected shunting triode, and transient state suppresses compensating circuit circuit is carried out to frequency compensation and self-excitation inhibition, eliminates circuit oscillation, reduces output ripple, and the load voltage of high-quality is provided to load.
Particularly, the core that the linear shunt circuit of negative feedback is the linear shunt circuit of super-stable state, it has utilized the feature of constant-current source, after the output voltage of sampling constant-current source, feed back to the input of computing by R1, R3 electric resistance partial pressure, export to regulate again the linearity shunting working point of triode by computing, and then reach the object that regulates constant-current source output voltage.The linear shunt circuit working mechanism of negative feedback: input driving voltage Vin and reference voltage V ref relatively after, drive triode Q1 to be operated in linear amplification region by computing N1 conversion output voltage again, now between the C utmost point (collector electrode) of triode Q1, the E utmost point (emitter), electric current I ce produces the effect of shunting to constant-current source output current, constant-current source is declined to load output current, and triode C, E voltage across poles Vce are that load voltage diminishes thereupon; Vce also feeds back to driving voltage Vin end by electric resistance partial pressure simultaneously, and from circuit on the whole, Vce becomes negative feedback relation with Vin, and the slowly working point of linear regulation triode Q1 makes triode Q1 shunting work more stable.Negative feedback in this circuit can be stablized quiescent point and the multiplication factor of shunting triode, can reduce nonlinear distortion in circuit, extending bandwidth, can also change input impedance and the output impedance of amplifying circuit, the performance of improving amplifying circuit is played an important role.
Further, super-stable state responds in linear shunt circuit fast, is also provided with negative pressure protective circuit.In the time that input Vin voltage is less than reference voltage V ref, now shunt circuit quits work, computing output high negative, and in negative pressure protective circuit, diode V1 conducting, carries out clamper to negative pressure, for shunting triode provides protection, avoids B, E utmost point reverse breakdown.
Further, super-stable state responds in linear shunt circuit fast, also be provided with transient state suppress compensating circuit, this circuit targetedly by computing is carried out frequency compensation, to computing power decoupling eliminated negative feedback separate system self-oscillation may, make circuit working more reliable and more stable.
In the time of the linear shunt circuit work of negative feedback, because degeneration factor feedback degree is dark, the high frequency dynamic adjustments of the working point of triode and due to the impact of internal capacitance, make computing, triode there is different multiplication factors and additional phase shift to different frequency component in signal, easily make computing occur self-oscillation, cause linear shunt circuit work shakiness.Therefore,, for improving the stability of the linear shunt circuit work of negative feedback, transient state suppresses compensating circuit and has used nonpolarity ceramic disc capacitor C1 and resistance R 6 carrying out forming frequency compensating network between 2,6 pins between bipolar operational, prevents self-oscillatory generation.
Transient state suppresses compensating circuit and also adds respectively over the ground the electric capacity that high frequency performance is good at the input of the positive and negative power supply of integrated computation.The computing internal resistance of source is larger, in the time that internal resistance is larger, can cause that output stage connects the voltage fluctuation at power supply place, this voltage fluctuation is applied to output stage by Power supply loop and meets power supply place, make input and output level output voltage respective change, so circulation, can cause vibration, adds at computing power end the self-excitation interference that electric capacity can suppress power supply.
A kind of transient state being applied in the linear shunt circuit of negative feedback provided by the invention suppresses compensating circuit and has been arranged in high orbit satellite model, and fly in-orbit 2 years with this satellite, in 2 years, this shunt circuit is in running order all the time, working properly, can verify practicality and the reliability of this circuit.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can utilize method and the technology contents of above-mentioned announcement to make possible variation and modification to technical solution of the present invention; therefore; every content that does not depart from technical solution of the present invention; any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present invention, all belong to the protection range of technical solution of the present invention.
Claims (7)
1. super-stable state responds a linear shunt circuit fast, it is characterized in that, comprising: the linear shunt circuit of negative feedback, negative pressure protective circuit and transient state suppress compensating circuit; The linear shunt circuit of described negative feedback is by output voltage, negative feedback comes the working point of linear regulation triode, to reach the object of constant-current source being carried out to linear shunting; Described negative pressure protective circuit is protected shunting triode, and described transient state suppresses compensating circuit circuit is carried out to frequency compensation and self-excitation inhibition, eliminates circuit oscillation, reduces output ripple, and the load voltage of high-quality is provided to load.
2. respond fast linear shunt circuit according to super-stable state claimed in claim 1, it is characterized in that, the linear shunt circuit of described negative feedback comprises computing N1, triode Q1, resistance R 1, R2, R3, R4, NPN type triode Q1; Described resistance R 1 one termination driving voltages, the positive input terminal of other end concatenation operation simultaneously N1 and one end of resistance R 3; Other one end of described resistance R 3 connects the high potential of constant-current source and the collector electrode of triode simultaneously; The electronegative potential ground connection of the emitter of described triode and constant-current source, load is connected in parallel on the two ends of constant-current source; One end of the base stage connecting resistance R4 of described triode, the output of another termination computing N1 of described resistance R 4; One end of the negative input end contact resistance R2 of described computing N1, an other termination reference voltage of described resistance R 2.
3. respond fast linear shunt circuit according to super-stable state claimed in claim 2, it is characterized in that, described computing N1 is bipolar operational amplifier.
4. respond fast linear shunt circuit according to super-stable state claimed in claim 3, it is characterized in that, described transient state suppresses compensating circuit and comprises capacitor C 1, C2, C3, resistance R 6; Described capacitor C 1 is connected with negative input end and the output of computing N1 respectively with two ends after R6 serial connection, and the positive-negative power pin of computing N1 is respectively by C2, C3 ground connection.
5. respond fast linear shunt circuit according to super-stable state claimed in claim 4, it is characterized in that, described negative pressure protective circuit is made up of diode V1 and resistance R 5; After described diode V1 connects with resistance R 5, the positive pole of diode is connected with the base stage of triode, minus earth.
6. respond fast linear shunt circuit according to super-stable state claimed in claim 6, it is characterized in that, described resistance R 1, R2, R3, R4, R5, R6 are that power is the fixed carbon resister of 0.25W.
7. respond fast linear shunt circuit according to super-stable state claimed in claim 4, it is characterized in that, described capacitor C 1, C2, C3 are nonpolarity ceramic disc capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210481075.7A CN103840441A (en) | 2012-11-23 | 2012-11-23 | Ultra-stable quick-response linear shunting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210481075.7A CN103840441A (en) | 2012-11-23 | 2012-11-23 | Ultra-stable quick-response linear shunting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103840441A true CN103840441A (en) | 2014-06-04 |
Family
ID=50803683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210481075.7A Pending CN103840441A (en) | 2012-11-23 | 2012-11-23 | Ultra-stable quick-response linear shunting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103840441A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105828492A (en) * | 2015-01-05 | 2016-08-03 | 汤崟 | Led drive circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107071A (en) * | 1986-10-04 | 1987-03-25 | 韩金祥 | Transistor emitter inverse overvoltage protection circuit and the adjustable D.C. regulated power supply that protective capability is arranged |
| US6590370B1 (en) * | 2002-10-01 | 2003-07-08 | Mti Microfuel Cells Inc. | Switching DC-DC power converter and battery charger for use with direct oxidation fuel cell power source |
| CN101442260A (en) * | 2007-11-23 | 2009-05-27 | 技领半导体(上海)有限公司 | Secondary constant-current constant-voltage controller chip and converter thereof |
| CN201917839U (en) * | 2010-12-08 | 2011-08-03 | 四川长虹电器股份有限公司 | Automatic maintaining voltage adjusting circuit for PDP (Plasma Display Panel) display screen |
| CN102332817A (en) * | 2011-09-14 | 2012-01-25 | 深圳航天科技创新研究院 | Solar energy array sequence parallel regulator |
| CN102498635A (en) * | 2009-09-16 | 2012-06-13 | 索尼公司 | Hybrid power supply system |
-
2012
- 2012-11-23 CN CN201210481075.7A patent/CN103840441A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107071A (en) * | 1986-10-04 | 1987-03-25 | 韩金祥 | Transistor emitter inverse overvoltage protection circuit and the adjustable D.C. regulated power supply that protective capability is arranged |
| US6590370B1 (en) * | 2002-10-01 | 2003-07-08 | Mti Microfuel Cells Inc. | Switching DC-DC power converter and battery charger for use with direct oxidation fuel cell power source |
| CN101442260A (en) * | 2007-11-23 | 2009-05-27 | 技领半导体(上海)有限公司 | Secondary constant-current constant-voltage controller chip and converter thereof |
| CN102498635A (en) * | 2009-09-16 | 2012-06-13 | 索尼公司 | Hybrid power supply system |
| CN201917839U (en) * | 2010-12-08 | 2011-08-03 | 四川长虹电器股份有限公司 | Automatic maintaining voltage adjusting circuit for PDP (Plasma Display Panel) display screen |
| CN102332817A (en) * | 2011-09-14 | 2012-01-25 | 深圳航天科技创新研究院 | Solar energy array sequence parallel regulator |
Non-Patent Citations (1)
| Title |
|---|
| 童诗白等: "《模拟电子技术基础》", 31 January 2001, article "《模拟电子技术基础》" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105828492A (en) * | 2015-01-05 | 2016-08-03 | 汤崟 | Led drive circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lee et al. | Design of low-power analog drivers based on slew-rate enhancement circuits for CMOS low-dropout regulators | |
| CN103187875B (en) | Switching regulator and control circuit and control method thereof | |
| JP4589665B2 (en) | Amplifier and high-frequency power amplifier using the same | |
| CN107092296B (en) | A kind of fast transient response low-voltage difference adjustor | |
| CN103838286A (en) | Low dropout linear regulator with quick transient response and high stability | |
| CN102025272A (en) | Discharging circuit | |
| CN102495656A (en) | Low dropout linear regulator | |
| CN111414039B (en) | Linear voltage regulator circuit adopting on-chip compensation technology | |
| CN101562394A (en) | Soft start circuit used in monolithic integration switching-type regulator | |
| CN110231847A (en) | Rapid response type low pressure difference linear voltage regulator | |
| CN101604174B (en) | Voltage regulator | |
| CN102891968A (en) | System for realizing EMCCD (Electron Multiplying Charge Coupled Device) high voltage driving signal based on CRT (Cathode Ray Tube) drive circuit | |
| CN216216786U (en) | Boost protection circuit, power amplifier and related chip | |
| CN101763134A (en) | Parallel voltage stabilizing circuit | |
| CN103840441A (en) | Ultra-stable quick-response linear shunting circuit | |
| CN208782994U (en) | Low-power consumption power supply circuit for NB-IoT communication module | |
| US20110187334A1 (en) | Power supply circuit and electronic device | |
| CN211744347U (en) | 5G radio frequency front end power switching chip compatible with APT and ET modes | |
| CN210123940U (en) | Constant voltage source | |
| CN102520750A (en) | Low-ripple linear power source | |
| CN105429461A (en) | Linear voltage-stabilizing circuit with continuously adjustable output voltage and power supply having the circuit | |
| CN209895206U (en) | Undervoltage protection and linear voltage stabilizing circuit | |
| CN105978514B (en) | A kind of discrete power amplifying circuit and signal generator based on amplifier | |
| CN217307666U (en) | Signal output device based on optical coupling isolation | |
| CN104111713A (en) | Voltage protection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140604 |
|
| WD01 | Invention patent application deemed withdrawn after publication |