CN103123511B - Hybrid type voltage-stabilized power supply - Google Patents
Hybrid type voltage-stabilized power supply Download PDFInfo
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- CN103123511B CN103123511B CN201310025912.XA CN201310025912A CN103123511B CN 103123511 B CN103123511 B CN 103123511B CN 201310025912 A CN201310025912 A CN 201310025912A CN 103123511 B CN103123511 B CN 103123511B
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- 230000006641 stabilisation Effects 0.000 claims abstract description 9
- 238000011105 stabilization Methods 0.000 claims abstract description 9
- 230000005669 field effect Effects 0.000 claims description 18
- 230000000087 stabilizing effect Effects 0.000 claims description 17
- 230000002459 sustained effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000015556 catabolic process Effects 0.000 claims description 3
- KBDSLGBFQAGHBE-MSGMIQHVSA-N limonin Chemical compound C=1([C@H]2[C@]3(C)CC[C@H]4[C@@]([C@@]53O[C@@H]5C(=O)O2)(C)C(=O)C[C@@H]2[C@]34COC(=O)C[C@@H]3OC2(C)C)C=COC=1 KBDSLGBFQAGHBE-MSGMIQHVSA-N 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The invention discloses a hybrid type voltage-stabilized power supply. The hybrid type voltage-stabilized power supply is formed by a linear voltage-stabilized power supply module and a switching power supply module in a parallel connection mode. The linear voltage-stabilized power supply module is in parallel connection with the switching power supply module so that hybrid voltage stabilization is realized. Output voltage is determined by the linear voltage-stabilized power supply module, ripples of an output waveform are small, and the bandwidth of the output waveform is wide. Output current is mostly supplied by the switching power supply module, and therefore the power supply efficiency is improved. The hybrid type voltage-stabilized power supply integrates the advantages of a linear power supply and the advantages of a switching power supply, and therefore the performance of the hybrid type voltage-stabilized power supply is improved.
Description
Technical field
The present invention relates to the design of mixed type stabilized voltage supply, can be widely used in the fields such as long-range and data communication, computing machine, business automation equipment, industrial instruments, military affairs, space flight, relate to all trades and professions of national economy.
Background technology
Conventional stabilized voltage supply mainly contains two kinds of linear stabilized power supply and switching power supplies.Linear stabilized power supply is owing to adjusting pipe work in linear amplification region, and in the time that load current is larger, the collector dissipation of adjusting pipe is larger, and power-efficient is lower, generally only has 40%-60%, sometimes also needs to be equipped with huge heat abstractor.But the output waveform of linear stabilized power supply has advantages of that degree of distortion is low, dynamic response fast and bandwidth.In switching power supply, adjust pipe and be operated on off state, because saturation conduction pressure drop and the cut-off current of pipe are all very little, so pipe consumption mainly occurs in the process of state conversion, power-efficient can be brought up to 75%-95%.Meanwhile, owing to having omitted the heat abstractor of power transformer and adjustment pipe, so with respect to linear stabilized power supply, switching power supply volume is little, lightweight.But the output waveform voltage ripple of Switching Power Supply is large, has voltage distortion and time delay, and circuit design more complicated, components and parts are had relatively high expectations.
In actual applications, how designing and realize more high power density, more high conversion efficiency, more low cost, more high performance stabilized voltage supply, is the target that Power Electronic Technique slip-stick artist pursues all the time.Conventionally, adopt the Switching Power Supply of recommending transform topological structure, can improve output power, be suitable for low-voltage, high-current occasion.The current mode technology of peak point current control and slope compensation technology are also parts for emerging power technology, and it can improve the stability of transient response speed and the system loop of Switching Power Supply effectively.The topological structure that Switching Power Supply is mixed with linear power supply is also improve power supply output efficiency and improve one of important method of performance.
Summary of the invention
The present invention will overcome the above-mentioned shortcoming of prior art, provide a kind of comprehensive linear power supply and Switching Power Supply advantage, avoid the inefficient of linear power supply and improve the mixed type stabilized voltage supply of voltage ripple, distortion and the time delay of Switching Power Supply.
Mixed type stabilized voltage supply of the present invention, is characterized in that: be formed in parallel by linear stabilized power supply module and switch power module; Described linear stabilized power supply module is by operational amplifier U
2, positive-negative-positive triode Q
1with NPN type triode Q
2, voltage stabilizing diode D
2, resistance R
3and R
4form; Wherein, D
2provide the reference voltage of linear power supply, triode Q
1and Q
2improve the output current driving force of Voltage stabilizing module, circuit is by controlling slide rheostat R
4value control the size of output voltage;
Described switch power module comprises operational amplifier U
3, external resistance R
6and R
10, reference power source V is provided
refvoltage stabilizing diode D
1, limiting resistance R
lim(resistance R
5), field effect transistor M
1, sustained diode
4and inductance L
1;
Specifically being connected to of described switch power module circuit: first, resistance R
6concatenation operation amplifier U
3in-phase end, operational amplifier U
3output through resistance R
10feed back to amplifier U
3in-phase end input end, form hysteresis voltage comparator CMP
1; Through rectification, filtered pulsating direct current input voltage V
idivide two-way, a road is first to pass through negative terminal, then the mode of process anode is through voltage stabilizing diode D
1with comparator C MP
1the R of in-phase end
6resistance is connected, and field effect transistor M is linked respectively on a road
1drain electrode and limiting resistance R
limone end, R
limthe other end and comparator C MP
1end of oppisite phase be connected, simultaneously with linear stabilized power supply module in Q
2collector connect; Comparator C MP
1output terminal and field effect transistor M
1grid be connected, field effect transistor M
1source electrode respectively with sustained diode
4negative terminal and inductance L
1one end be connected, D
4positive ending grounding, inductance L
1the other end and the output-parallel of linear voltage stabilization module after with pull-up resistor R
8be connected;
The circuit of linear stabilized power supply module is specifically connected to: filtered pulsating direct current input voltage V
ithrough a current-limiting resistance, with stabilivolt D
2negative terminal be attempted by operational amplifier U
2in-phase end, stabilivolt D
2positive ending grounding.Resistance R
3one termination amplifier U
2end of oppisite phase, other end ground connection; Amplifier U
2output through resistance R
4feed back to amplifier U
2inverting input; Triode Q
1and Q
2base stage and connect after and amplifier U
2output terminal be connected, emitter also connects the rear output as linear voltage stabilization module, triode Q
1grounded collector, triode Q
2collector and resistance R
5one end be connected.
As preferred a kind of scheme: comparator C MP
1reference power source by voltage stabilizing diode D
1with adjustable resistance R
2compose in parallel, by regulating R
2the reference voltage V of size control place in circuit
ref; And, reference power source V
refthrough voltage follower U
1buffer compartment from after be connected to comparator C MP
1in-phase end; In addition, field effect transistor M
1drain electrode and source electrode between and meet a protection diode D
3, in the time of input short, be inductance L
1one discharge paths is provided, prevents M
1drain-source breakdown.
Technical conceive of the present invention is: when work, by changing limiting resistance R
limon pressure drop, to adjust input comparator CMP
1the magnitude of voltage of end of oppisite phase, makes itself and thresholding reference voltage V
tcompare, to determine that the output of comparer is high level or low level.As the output current i of linear voltage stabilization module section
regwhen increase, R
limon pressure drop will be along with increase, input comparator CMP
1the voltage of end of oppisite phase reduces, if lower than the thresholding reference voltage V setting
t-time, comparer output high level, field effect transistor M
1conducting, inductance L
1charged, the output current i of Switching Power Supply part
lincrease.Due to output total current I
outa constant numerical value, the now current i of linear power supply part
regprogressively decline, R
limon also corresponding reducing of pressure drop, cause comparator C MP
1the input voltage of end of oppisite phase increases, when exceeding the threshold voltage V of setting
t+time, comparer output low level, M
1cut-off, diode D
4for inductance L
1provide afterflow passage, inductive current i
lstart to decline, simultaneously the output current i of linear power supply
regprogressively rise.So go round and begin again, keep the constant of output voltage.
In the above-mentioned course of work, linear stabilized power supply ensures the constant of output voltage, voltage comparator CMP
1control field effect transistor M
1switch, and the frequency of operation of definite Switching Power Supply.Output current I
outmost electric currents provided by Switching Power Supply, improved conversion efficiency.The output current of linear power supply has a threshold value I
γ, by the voltage V of reference power source
ref, limiting resistance R
limand the feedback resistance R of hysteresis comparator
6and R
10institute determines.As the output i of linear power supply
regexceed I
γtime, M
1conducting, restriction i
regcontinuing increases; Work as i
regwhile being reduced to a certain degree, M
1cut-off, stops i
regfurther reduce, thereby ensure output current I
outit is a steady state value.
Beneficial effect of the present invention is mainly manifested in: by linear stabilized power supply and switch power parallel, realize mixed stable voltage.Output voltage determines by linear voltage stabilization part, and output waveform ripple is little, bandwidth; Output current major part is provided by Switching Power Supply, has improved power-efficient.This power supply combines the advantage separately of linear power supply and Switching Power Supply, has improved power source performance.
Brief description of the drawings
Fig. 1 mixed type voltage-stabilized power supply circuit schematic diagram
Fig. 2 mixed type stabilized voltage supply output voltage work wave
Fig. 3 comparator C MP
1output terminal (passage 1) and D
4the voltage waveform (passage 2) at two ends
The current waveform of Fig. 4 circuit each several part
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Mixed type stabilized voltage supply of the present invention, is characterized in that: be formed in parallel by linear stabilized power supply module and switch power module; Described linear stabilized power supply module is by operational amplifier U
2, positive-negative-positive triode Q
1with NPN type triode Q
2, voltage stabilizing diode D
2, resistance R
3and R
4form; Wherein, D
2provide the reference voltage of linear power supply, triode Q
1and Q
2improve the output current driving force of Voltage stabilizing module, circuit is by controlling slide rheostat R
4value control the size of output voltage;
Described switch power module comprises operational amplifier U
3, external resistance R
6and R
10, reference power source V is provided
refvoltage stabilizing diode D
1, limiting resistance R
lim(resistance R
5), field effect transistor M
1, sustained diode
4and inductance L
1;
Specifically being connected to of described switch power module circuit: first, resistance R
6concatenation operation amplifier U
3in-phase end, operational amplifier U
3output through resistance R
10feed back to amplifier U
3in-phase end input end, form hysteresis voltage comparator CMP
1; Through rectification, filtered pulsating direct current input voltage V
idivide two-way, a road is first to pass through negative terminal, then the mode of process anode is through voltage stabilizing diode D
1with comparator C MP
1the R of in-phase end
6resistance is connected, and field effect transistor M is linked respectively on a road
1drain electrode and limiting resistance R
limone end, R
limthe other end and comparator C MP
1end of oppisite phase be connected, simultaneously with linear stabilized power supply module in Q
2collector connect; Comparator C MP
1output terminal and field effect transistor M
1grid be connected, field effect transistor M
1source electrode respectively with sustained diode
4negative terminal and inductance L
1one end be connected, D
4positive ending grounding, inductance L
1the other end and the output-parallel of linear voltage stabilization module after with pull-up resistor R
8be connected;
The circuit of linear stabilized power supply module is specifically connected to: filtered pulsating direct current input voltage V
ithrough a current-limiting resistance, with stabilivolt D
2negative terminal be attempted by operational amplifier U
2in-phase end, stabilivolt D
2positive ending grounding.Resistance R
3one termination amplifier U
2end of oppisite phase, other end ground connection; Amplifier U
2output through resistance R
4feed back to amplifier U
2inverting input; Triode Q
1and Q
2base stage and connect after and amplifier U
2output terminal be connected, emitter also connects the rear output as linear voltage stabilization module, triode Q
1grounded collector, triode Q
2collector and resistance R
5one end be connected.
As preferred a kind of scheme: comparator C MP
1reference power source by voltage stabilizing diode D
1with adjustable resistance R
2compose in parallel, by regulating R
2the reference voltage V of size control place in circuit
ref; And, reference power source V
refthrough voltage follower U
1buffer compartment from after be connected to comparator C MP
1in-phase end; In addition, field effect transistor M
1drain electrode and source electrode between and meet a protection diode D
3, in the time of input short, be inductance L
1one discharge paths is provided, prevents M
1drain-source breakdown.
Fig. 1 is circuit theory diagrams of the present invention, and linear stabilized power supply module is by operational amplifier TL081, triode Q
1and Q (BD140)
2(BD139), voltage stabilizing diode D
2, resistance R
3, R
4and R
5form.Wherein, R
5limiting resistance R
lim, D
2provide the reference voltage of linear power supply, by controlling slide rheostat R
4value control the size of output voltage.Voltage stabilizing diode D
1, adjustable potentiometer R
2, voltage follower U
1(uA741), hysteresis comparator CMP
1(comprise operational amplifier LM311, resistance R
6and R
10), field effect transistor M
1(IRF540), inductance L
1and sustained diode
4composition Switching Power Supply part.Voltage follower U
1play a part buffer compartment from.Stabilivolt D
1with potentiometer R
2determine comparator C MP
1the value of reference voltage, by with limiting resistance R
limthe voltage of upper generation compares, and determines that the output of comparer is high level or low level.In the time that linear power supply part output current increases, R
limon pressure drop will be along with increase, input comparator CMP
1the voltage of end of oppisite phase reduces, if lower than the thresholding reference voltage V setting
t-time, comparer output high level, M
1conducting, inductance L
1charged, Switching Power Supply part output current increases.Because output total current is a constant numerical value, now the electric current of linear switch part progressively declines, R
limon also corresponding reducing of pressure drop, make comparator C MP when being reduced to
1the input voltage of end of oppisite phase exceedes the threshold voltage V of setting
t+time, comparer is output low level, M
1cut-off, D
4for inductance L
1afterflow passage is provided, and inductive current starts to decline, and linear power supply output current progressively rises.So go round and begin again, keep the constant of output voltage.
In Fig. 1, adding amplitude is the DC voltage of 18V, and is superimposed with the interference square-wave signal of 1V, a 10KHz, the pulsation of analog input signal, slide rheostat R
2and R
4all get the waveform that 50%, Fig. 2 has shown output voltage.Can see, the waveform of output voltage is comparatively desirable, and amplitude is 6.67V, with the theoretical calculation formula of linear power supply module output voltage
the value drawing is consistent.Fig. 3 has shown comparator C MP1 output terminal and sustained diode
4the voltage waveform at two ends.Analyze theoretically, when comparer is normally worked, on off state, its output waveform should be a square wave.As we can see from the figure, the actual output of comparer is consistent with theory.Thereby illustrate, switch power module is working properly.Fig. 4 has shown the waveform of circuit each several part electric current, and wherein passage 1 is the output current of linear power supply part, the current waveform that passage 2 is switch sections, and passage 3 is output total current waveform, wherein the electric current and voltage of current probe is than being 10mV/mA.As we can see from the figure, the electric current of switch module is about 550 ± 50mA, and the electric current of linear block is about 100 ± 50mA.Obviously, switch module provides most output currents, and output current keeps a fixed value (being about 660mA) simultaneously.This explanation, most power of circuit are realized by switch module, improved the efficiency of circuit, and the Main Function of linear block are the ripples that reduces output voltage, improve the performance of circuit.
Content described in this instructions embodiment is only enumerating of way of realization to inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also and conceive the equivalent technologies means that can expect according to the present invention in those skilled in the art.
Claims (2)
1. mixed type stabilized voltage supply, is characterized in that: be formed in parallel by linear stabilized power supply module and switch power module; Described linear stabilized power supply module is by operational amplifier U
2, positive-negative-positive triode Q
1with NPN type triode Q
2, voltage stabilizing diode D
2, resistance R
3and R
4form; Wherein, D
2provide the reference voltage of linear power supply, triode Q
1and Q
2improve the output current driving force of Voltage stabilizing module, circuit is by controlling slide rheostat R
4value control the size of output voltage;
Described switch power module comprises operational amplifier U
3, external resistance R
6and R
10, reference power source V is provided
refvoltage stabilizing diode D
1, limiting resistance R
lim(resistance R
5), field effect transistor M
1, sustained diode
4and inductance L
1;
Specifically being connected to of described switch power module circuit: first, resistance R
6concatenation operation amplifier U
3in-phase end, operational amplifier U
3output through resistance R
10feed back to amplifier U
3in-phase end input end, form hysteresis voltage comparator CMP
1; Through rectification, filtered pulsating direct current input voltage V
idivide two-way, a road is first to pass through negative terminal, then the mode of process anode is through voltage stabilizing diode D
1with comparator C MP
1the R of in-phase end
6resistance is connected, and field effect transistor M is linked respectively on a road
1drain electrode and limiting resistance R
limone end, R
limthe other end and comparator C MP
1end of oppisite phase be connected, simultaneously with linear stabilized power supply module in Q
2collector connect; Comparator C MP
1output terminal and field effect transistor M
1grid be connected, field effect transistor M
1source electrode respectively with sustained diode
4negative terminal and inductance L
1one end be connected, D
4positive ending grounding, inductance L
1the other end and the output-parallel of linear voltage stabilization module after with pull-up resistor R
8be connected;
The circuit of linear stabilized power supply module is specifically connected to: filtered pulsating direct current input voltage V
ithrough a current-limiting resistance, with stabilivolt D
2negative terminal be attempted by operational amplifier U
2in-phase end, stabilivolt D
2positive ending grounding; Resistance R
3one termination amplifier U
2end of oppisite phase, other end ground connection; Amplifier U
2output through resistance R
4feed back to amplifier U
2inverting input; Triode Q
1and Q
2base stage and connect after and amplifier U
2output terminal be connected, emitter also connects the rear output as linear voltage stabilization module, triode Q
1grounded collector, triode Q
2collector and resistance R
5one end be connected.
2. stabilized voltage supply as claimed in claim 1, is characterized in that: comparator C MP
1reference power source by voltage stabilizing diode D
1with adjustable resistance R
2compose in parallel, by regulating R
2the reference voltage V of size control place in circuit
ref; And, reference power source V
refthrough voltage follower U
1buffer compartment from after be connected to comparator C MP
1in-phase end; In addition, field effect transistor M
1drain electrode and source electrode between and meet a protection diode D
3, in the time of input short, be inductance L
1one discharge paths is provided, prevents M
1drain-source breakdown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025912.XA CN103123511B (en) | 2013-01-23 | 2013-01-23 | Hybrid type voltage-stabilized power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025912.XA CN103123511B (en) | 2013-01-23 | 2013-01-23 | Hybrid type voltage-stabilized power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103123511A CN103123511A (en) | 2013-05-29 |
| CN103123511B true CN103123511B (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310025912.XA Active CN103123511B (en) | 2013-01-23 | 2013-01-23 | Hybrid type voltage-stabilized power supply |
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| CN (1) | CN103123511B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793683B (en) * | 2015-04-20 | 2016-09-14 | 樊晓微 | Mixed stable voltage power supply |
| CN107831884A (en) * | 2017-10-24 | 2018-03-23 | 曙光信息产业(北京)有限公司 | The electric power system of computer motherboard |
| CN111555646B (en) * | 2020-04-24 | 2021-07-23 | 散裂中子源科学中心 | High-bandwidth linear amplification circuit of switching power supply and control method thereof |
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|---|---|---|---|---|
| CN1866712A (en) * | 2006-04-25 | 2006-11-22 | 安徽工业大学 | High-power high-precision switch linear combined manostat |
| CN101662221A (en) * | 2008-08-25 | 2010-03-03 | 程杰保 | High-efficiency linear power supply module |
| CN202159282U (en) * | 2011-05-03 | 2012-03-07 | 深圳可立克科技股份有限公司 | Micro dropout linear voltage stabilization power supply circuit |
| CN203287806U (en) * | 2013-01-23 | 2013-11-13 | 浙江工业大学 | Mixed type regulated power supply |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7804345B2 (en) * | 2008-01-15 | 2010-09-28 | Omnivision Technologies, Inc. | Hybrid on-chip regulator for limited output high voltage |
-
2013
- 2013-01-23 CN CN201310025912.XA patent/CN103123511B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1866712A (en) * | 2006-04-25 | 2006-11-22 | 安徽工业大学 | High-power high-precision switch linear combined manostat |
| CN101662221A (en) * | 2008-08-25 | 2010-03-03 | 程杰保 | High-efficiency linear power supply module |
| CN202159282U (en) * | 2011-05-03 | 2012-03-07 | 深圳可立克科技股份有限公司 | Micro dropout linear voltage stabilization power supply circuit |
| CN203287806U (en) * | 2013-01-23 | 2013-11-13 | 浙江工业大学 | Mixed type regulated power supply |
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| CN103123511A (en) | 2013-05-29 |
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Application publication date: 20130529 Assignee: Deqing Yuanhao Building Materials Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980040860 Denomination of invention: Hybrid regulated power supply Granted publication date: 20141112 License type: Common License Record date: 20230831 |
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