CN105099192B - The output voltage regulation circuit and its control method of power supply - Google Patents
The output voltage regulation circuit and its control method of power supply Download PDFInfo
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Abstract
The present invention provides a kind of output voltage regulation circuit and its control method of power supply, and the wherein output voltage regulation circuit of power supply includes comparison module, the first control module and switch module；The switch module includes at least two switches；The comparison module, for the output voltage and the reference voltage of power supply according to power supply, generates feedback signal；First control module, is connected with the comparison module and the switch module respectively, for according to the feedback signal, the switching molding each switch conduction in the block or disconnection being controlled, to adjust the output voltage of the power supply.Technical solution using the present invention can make a kind of equivalent output voltage regulation circuit into different power supplys of the output voltage regulation circuit of power supply when each switch working state is different, simple in structure, improve the stability of the output voltage regulation circuit of power supply.
Description
Technical field
The present invention relates to the output voltage regulation circuit and its controlling party of power technique fields, more particularly to a kind of power supply
Method.
Background technology
Development and people's living standards continue to improve with electronics technology, the use of various electronic products are more and more general
And.Electronic product needs stable operating voltage at work, in order to meet the operating voltage of electronic product, it will usually printing
Circuit board (Printed Circuit Board；PCB) output voltage regulation circuit of stable power supply is set, with according to reality
Situation adjusts the output voltage of power supply, power supply is exported stable voltage, works normally electronic product.
The output voltage regulation circuit of power supply of the prior art generally includes boosting (Boost) and adjusts circuit, decompression
(Buck) adjust circuit or buck (Buck-boost) adjusts circuit.Wherein Boost adjusts circuit and Buck adjusts circuit
Boosting respectively with pressure reduction, the outbound course of power supply will not change, and be positive supply；And Buck-boost adjusts circuit
Power supply outbound course can change in boosting or pressure reduction, be negative supply.
But in the prior art, when needing at least two out-put supplies in electronic product, it is necessary to using above-mentioned any two
The output voltage regulation circuit combination realization of the output voltage regulation circuit combination of kind power supply or three kinds of power supplys, by
Between the output voltage regulation circuit of each power supply independently of each other, cause the output voltage regulation circuit of power supply complicated, drop
The low stability of the output voltage regulation circuit of power supply.
The content of the invention
The present invention provides a kind of output voltage regulation circuit and its control method of power supply, is needed with solving to work as in electronic product
, it is necessary to which the output voltage regulation circuit combination of multiple power supplys is realized when wanting at least two out-put supplies, and due to each power supply
Output voltage regulation circuit between independently of each other, cause the output voltage regulation circuit of power supply complicated, reduce power supply
Output voltage regulation circuit stability the problem of.
The present invention provides a kind of output voltage regulation circuit of power supply, including comparison module, the first control module and switch
Module；The switch module includes at least two switches；
The comparison module, for the output voltage and the reference voltage of power supply according to power supply, generates feedback signal；
First control module, is connected with the comparison module and the switch module respectively, for according to described anti-
Feedback signal, controls the switching molding each switch conduction in the block or disconnection, to adjust the output voltage of the power supply.
The present invention provides a kind of control method of the output voltage regulation circuit of power supply, including：
According to the output voltage of power supply and the reference voltage of power supply, feedback signal is generated；
According to the feedback signal, controlling switch mould each switch conduction in the block or disconnection, to adjust the power supply
Output voltage.
The output voltage regulation circuit and its control method of the power supply of the present invention, by the first control module according to comparing mould
The feedback signal of block generation, controlling switch mould each switch conduction in the block or disconnection, to adjust the output voltage of power supply, are realized
Input power is converted into different out-put supplies.Technical solution using the present invention can be different in each switch working state
When, make a kind of equivalent output voltage regulation circuit into different power supplys of the output voltage regulation circuit of power supply, it is simple in structure, carry
The high stability of the output voltage regulation circuit of power supply.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structure diagram of one embodiment of output voltage regulation circuit of the power supply of the present invention；
Fig. 2 is the structure diagram of another embodiment of output voltage regulation circuit of the power supply of the present invention；
Fig. 3 is the circuit diagram of the output voltage regulation circuit embodiment of the power supply of the present invention；
Fig. 4 is a kind of equivalent circuit diagram of working status of Fig. 3；
Fig. 5 is the equivalent circuit diagram of another working status of Fig. 3；
Fig. 6 is the equivalent circuit diagram of another working status of Fig. 3；
Fig. 7 is the flow chart of the control method embodiment of the output voltage regulation circuit of the power supply of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without creative efforts, belong to the scope of protection of the invention.
Fig. 1 is the structure diagram of one embodiment of output voltage regulation circuit of the power supply of the present invention, as shown in Figure 1, this
The output voltage regulation circuit of the power supply of embodiment can include comparison module 1, the first control module 2 and switch module 3；Its
In, switch module 3 includes at least two switches, and comparison module 1 is used for the reference electricity of the output voltage and power supply according to power supply
Pressure, generates feedback signal.First control module 2 is connected with comparison module 1 and switch module 3 respectively, and the first control module 2 is used for
According to the feedback signal of the generation of comparison module 1, each switch conduction or disconnection in controlling switch module 3, to adjust power supply
Output voltage.
For example, when using the output voltage regulation circuit of the power supply of the present embodiment, the circuit needs can be determined in advance
The reference voltage of the magnitude of voltage of output, i.e. power supply, and the reference voltage of the power supply is obtained by comparison module 1, while comparison module 1
It is connected with the output terminal of the output voltage regulation circuit of the power supply of the present embodiment, so as to obtain the output electricity of the power supply by sampling
The output voltage of power supply in voltage regulator circuit, and feedback signal is generated according to the output voltage of power supply and the reference voltage of power supply.
Need to adjust after can specifically being matched with the reference voltage of power supply including the output voltage of power supply in the feedback signal
Power supply output voltage direction and amplitude.For example, when feedback signal is positive numerical value, current output voltage can be represented
It is higher, it is necessary to carry out reduction regulation；Or when feedback signal is negative numerical value, it can represent that current output voltage is relatively low, need
Carry out boosting adjusting.
Specifically, when using the comparator of difference in functionality, the reference voltage for the power supply that comparison module 1 obtains is different, but
There are certain matching relationship for the output voltage of power supply and the reference voltage of power supply.Such as the reference voltage of power supply can be power supply
Output voltage actual value, compare the size of the numerical value of the output voltage numerical value of power supply that sampling obtains and reference voltage at this time
Relation, generates corresponding feedback signal；The reference voltage of power supply can also be the multiple value of the output voltage of power supply, will adopt at this time
After the output voltage numerical value for the power supply that sample obtains expands or shrinks corresponding multiple, then compared with the reference voltage of power supply,
Generate corresponding feedback signal；The reference voltage of power supply can also be the difference with the output voltage of power supply, will sample at this time
To power supply output voltage numerical value be correspondingly processed after, then compared with the reference voltage of power supply, generation is corresponding anti-
Feedback signal etc., no longer illustrates one by one herein.When comparison module 1 is generated according to the output voltage of power supply and the reference voltage of power supply
After feedback signal, it can send into the first control module 2.
First control module 2 can specifically use pulse width modulator (Pulse Width Modulation；PWM) realize,
After the first control module 2 receives the feedback signal of the transmission of comparison module 1, the output electricity of the power supply exported according to feedback signal
The direction of pressure and amplitude, pass through corresponding switch in the working status and a cycle that are respectively switched in controlling switch module 3
Duty cycle between ON time and total time, can make the output voltage boosting or decompression of the power supply of the present embodiment, so that
The output voltage of power supply is adjusted, meets the matching relationship of the output voltage of power supply and the reference voltage of power supply, reaches power good
The purpose of output.
The output voltage regulation circuit of the power supply of the present embodiment, is generated by the first control module 2 according to comparison module 1
Feedback signal, each switch conduction or disconnection in controlling switch module 3, to adjust the output voltage of power supply, realizing will be defeated
It is different out-put supplies to enter power conversion.Using the present embodiment technical solution can when each switch working state is different,
Make a kind of equivalent output voltage regulation circuit into different power supplys of the output voltage regulation circuit of power supply, it is simple in structure, improve
The stability of the output voltage regulation circuit of power supply.
Fig. 2 is the structure diagram of another embodiment of output voltage regulation circuit of the power supply of the present invention, as shown in Fig. 2,
The output voltage regulation circuit of the power supply of the present embodiment further comprises the second control on the basis of embodiment illustrated in fig. 1
Module 4.As shown in Fig. 2, comparison module 1 can include positive voltage comparator 11 and negative voltage comparator 12；Second control module 4
It is connected respectively with positive voltage comparator 11 and negative voltage comparator 12, the second control module 4 is used to receive the enabled of exterior transmission
Control signal, and according to enabled control signal, triggering positive voltage comparator 11, which starts or triggers negative voltage comparator 12, to be started.
For example, the exterior enabled control signal sent is specifically as follows the host of the output voltage regulation circuit using the power supply, host
The out-put supply needed may be positive supply, it is also possible to be negative supply, therefore the enabled control signal that host is sent includes positive electricity
The enabled control signal of pressure or negative voltage enable control signal.
Still optionally further, the second control module 4 is specifically used for when the control signal received enables control including positive voltage
During signal processed, power supply output is positive supply, triggers positive voltage comparator 11 at this time and starts, so that positive voltage comparator 11 is according to electricity
The output voltage in source and the reference voltage of power supply, generate feedback signal；Or second control module 4 be used for when the control that receive
When signal enables control signal including negative voltage, then it is negative supply to need power supply output, triggers negative voltage comparator 12 at this time and opens
It is dynamic, with the output voltage and the reference voltage of power supply according to power supply, generate feedback signal.
For example, host can also send regulated voltage signal corresponding with enabling control signal by control instruction signal,
Universal serial bus (Inter-Integrated Circuit with the 2-wire in the present embodiment；I2C) exemplified by agreement, believed by clock
Number line (Serial Clock；) and data signal line (Serial Data SCL；SDA) send binary command and be given to the second control
Module 4, the second control module 4 according to the corresponding reference voltage of control instruction signal output, and by positive voltage comparator 11 or
After negative voltage comparator 12 obtains, matched with the output voltage of corresponding power supply.
Specifically, when the output voltage of power supply and the reference voltage of power supply mismatch, positive voltage comparator 11 or negative
The feedback signal of the output of voltage comparator 12 is simultaneously sent to the first control module 2, so that by 2 controlling switch mould of the first control module
The conducting state respectively switched in block 3, forms feedback network, and then adjusts the output voltage of power supply, the output until meeting power supply
The matching relationship of the reference voltage of voltage and power supply.For example, the first control module 2 is specifically additionally operable to the positive voltage ratio according to reception
The feedback signal generated compared with device 11 or negative voltage comparator 12, it is corresponding when controlling the output voltage regulation circuit of power supply to boost
Switch conduction or disconnection, to improve the output voltage of power supply；Alternatively, the first control module 2 is specifically additionally operable to according to positive voltage
The feedback signal that comparator 11 or negative voltage comparator 12 generate, corresponds to when controlling the output voltage regulation circuit of power supply to be depressured
Switch conduction or disconnection, to reduce the output voltage of power supply.
The output voltage regulation circuit of the power supply of the present embodiment, the enabled control by the second control module 4 according to reception
Signal, triggering positive voltage comparator 11 or negative voltage comparator 12, and by the positive voltage comparator of 2 basis of the first control module
Each switch conduction or disconnection in the 11 feedback signal controlling switch modules 3 that either negative voltage comparator 12 generates, not only may be used
To adjust the size of the output voltage of power supply, the direction of the output voltage of power supply can also be adjusted, realizes and turns input power
Turn to different out-put supplies.A kind of electricity can be made when each switch working state is different using the technical solution of the present embodiment
The equivalent output voltage regulation circuit into different power supplys of output voltage regulation circuit in source, it is simple in structure, improve power supply
The stability of output voltage regulation circuit.
Fig. 3 is the circuit diagram of the output voltage regulation circuit embodiment of the power supply of the present invention, as shown in figure 3, the present embodiment
Power supply output voltage regulation circuit on the basis of embodiment illustrated in fig. 2, further in further detail to the present invention skill
Art scheme illustrates.Wherein the first control module 2 is specifically realized using PWM, is respectively switched with metal-oxide semiconductor (MOS)
(Metal Oxide Semiconductor；MOS) pipe is realized.Specifically operation principle is as follows：
When outside sends positive voltage to the second control module 4 enables control signal and corresponding regulated voltage signal, electricity
The output voltage in source is identical with the input voltage direction of power supply, and positive voltage comparator 11 works, when obtaining the output voltage of power supply
Mismatched with power source reference voltage relationship, and output voltage of the feedback signal generated including current power is higher, it is necessary to carry out
During reduction regulation, feedback signal is sent into PWM, and PWM controlling switches K3 is disconnected, switch K4 conductings, and controlling switch K1 and is opened
Close K2 alternating cyclicals to disconnect and turn on, the output voltage regulation circuit of the power supply of the present embodiment is equivalent to reduction regulation electricity
Road.Fig. 4 is a kind of equivalent circuit diagram of working status of Fig. 3.
As shown in figure 4, load can be connected between positive electricity source output terminal Vp and negative electricity source output terminal Vn, when switch K1 is led
Leading to, when switch K2 is disconnected, input power Vin charges inductance L, inductance L energy storage, when switch K1 disconnections, switch K2 conductings, electricity
Sense L powers to the load.Configuration switch K1 ON times are Ton1, switch K1 turn-off times are Toff1, the work period for switching K1 is
Ts1, then have Ts1=Ton1+Toff1.Set the duty cycle D of K1 ON times1=Ton1/Ts1, then have Vp=D1Vin, the output of power supply
Voltage is less than the input voltage of power supply, and can make input power output just by adjusting the size of D, to adjust the size of Vp
Voltage dropping power supply.
When outside to main control module send positive voltage enable control signal and corresponding regulated voltage signal when, power supply it is defeated
It is identical with the input voltage direction of power supply to go out voltage, positive voltage comparator 11 works, when obtaining the output voltage and power supply of power supply
Reference voltage relation mismatches, and output voltage of the feedback signal generated including current power is relatively low, it is necessary to carry out boosting tune
During section, feedback signal is sent into PWM, and PWM controlling switches K1 and switch K4 conductings, switch K2 is disconnected, and controlling switch K3 weeks
Phase property disconnects and conducting, the output voltage regulation circuit of the power supply of the present embodiment is equivalent to a liter voltage regulator circuit.Fig. 5 is Fig. 3
Another working status equivalent circuit diagram.
As shown in figure 5, load can be connected between positive electricity source output terminal Vp and negative electricity source output terminal Vn, when switch K3 conductings
When, input power Vin charges inductance L, inductance L energy storage, and when switching K3 disconnections, input power Vin and inductance L are at the same time to negative
Power supply is carried, configuration switch K3 ON times are Ton3, switch K3 turn-off times are Toff3, the work period for switching K3 is Ts3, then have
Ts3=Ton3+Toff3.Set the duty cycle D of K1 ON times2=Ton3/Ts3, then have Vp=Vin/ (1-D2), the output electricity of power supply
Pressure is more than the input voltage of power supply, and can be by adjusting D2Size, to adjust the size of Vp, make input power output it is positive
Booster power.
When outside to main control module send negative voltage enable control signal and corresponding regulated voltage signal when, power supply it is defeated
It is different from the input voltage direction of power supply to go out voltage, negative voltage comparator 12 works, when obtaining the output voltage and power supply of power supply
When reference voltage relation mismatches, feedback signal is sent into PWM, and PWM controlling switches K3 conductings, switch K4 is disconnected, and is controlled
Switch K1 and switch K2 alternating cyclicals disconnect and conducting, make the output voltage regulation circuit of the power supply of the present embodiment be equivalent to bear
Power source regulating circuit.Fig. 6 is the equivalent circuit diagram of another working status of Fig. 3.
As shown in fig. 6, load can be connected between positive electricity source output terminal Vp and negative electricity source output terminal Vn, when switch K1 is led
Leading to, when switch K2 is disconnected, input power Vin charges inductance L, inductance L energy storage, when switch K1 disconnections, switch K2 conductings, electricity
Sense L powers to the load.Configuration switch K1 ON times are Ton1＇, switch K1 turn-off times are Toff1＇, switchs the work period of K1
For Ts1＇, then have Ts1＇=Ton1＇+Toff1＇.Set the duty cycle D of K1 ON times3=T ＇on1/ T ＇s1, then have Vn=D3Vin/
(D3- 1), due to D3<1 thus the output voltage Vn of power supply and the input voltage vin direction of power supply on the contrary, and power supply output electricity
Pressure is by D3Size determine, work as D3>When 1/2, the negative voltage dropping power supply of input power output, works as D3<When 1/2, input power output is negative
Booster power, therefore according to negative voltage comparator 12 generate feedback signal, by adjusting D3Size meet feedback signal
In power supply output voltage.
It should be noted that the second control module 4 can also be connected with the output terminal Vp and Vn of power supply, when the output of power supply
When end Vp and Vn needs to close, the second control module 4 can control the output terminal Vp and Vn of the power supply to pass through repid discharge path
With ground connection, and turn on so that the residual voltage repid discharge on the electric capacity of voltage regulation of output terminal realizes that output rapidly switches off function to ground.
The output voltage regulation circuit of the power supply of the present embodiment, by the second control module 4 according to reception make can control
Signal processed, triggering positive voltage comparator 11 or negative voltage comparator 12, and compared by the positive voltage of 2 basis of the first control module
Each switch conduction or disconnection in the feedback signal controlling switch module 3 that either negative voltage comparator 12 generates of device 11, not only
The size of the output voltage of power supply can be adjusted, the direction of the output voltage of power supply can also be adjusted, is realized input power
It is converted into different out-put supplies.One kind can be made when each switch working state is different using the technical solution of the present embodiment
The equivalent output voltage regulation circuit into different power supplys of output voltage regulation circuit of power supply, it is simple in structure, improve power supply
Output voltage regulation circuit stability.
Fig. 7 is the flow chart of the control method embodiment of the output voltage regulation circuit of the power supply of the present invention, such as Fig. 7 institutes
Show, the control method of the output voltage regulation circuit of the power supply of the present embodiment, including：
100th, according to the output voltage of power supply and the reference voltage of power supply, feedback signal is generated；
, can be by the output voltage of power supply and power supply after the output voltage and the reference voltage of power supply for obtaining power supply
Reference voltage is matched, and generates corresponding feedback signal.
101st, according to feedback signal, controlling switch mould each switch conduction in the block or disconnection, to adjust the output of power supply
Voltage.
According to the feedback signal of reception, can need to turn on or need the switch disconnected by controlling, so as to adjust electricity
The output voltage in source, meets the matching relationship of the output voltage of power supply and the reference voltage of power supply, reaches power good output
Purpose.
The control method of the output voltage regulation circuit of the power supply of the present embodiment, is specifically as follows shown in above-mentioned Fig. 1 and implements
The application method of the output voltage regulation circuit of the power supply of example, is realized to real shown in the output voltage adjusting of power supply and above-mentioned Fig. 1
Apply that the realization mechanism of example is identical, may be referred to the related record of above-described embodiment in detail, details are not described herein.
The output voltage regulation circuit of the power supply of the present embodiment, passes through the reference electricity of the output voltage according to power supply and power supply
The feedback signal of generation, controlling switch mould each switch conduction in the block or disconnection are pressed, to adjust the output voltage of power supply, is realized
Input power is converted into different out-put supplies.Can be in each switch working state not using the technical solution of the present embodiment
Meanwhile a kind of output voltage regulation circuit of power supply is changed into the output voltage regulation circuit of different power supplys, it is simple in structure,
Improve the stability of the output voltage regulation circuit of power supply.
Still optionally further, the control method of the output voltage regulation circuit of the power supply of above-described embodiment, in step 100
Before " according to the output voltage of power supply and the reference voltage of power supply, generating feedback signal ", the output electricity of the power supply of the present embodiment
The control method of voltage regulator circuit, can also include the following steps：
(1) the exterior enabled control signal sent is received；
For example, enabled control signal enables control signal including positive voltage or negative voltage enables control signal.
(2) according to the enabled control signal of reception, triggering positive voltage comparator starts or triggering negative voltage comparator opens
It is dynamic.
Specifically, when control signal enables control signal including positive voltage, triggering positive voltage comparator starts, so that just
Voltage comparator compares the relation of the reference voltage of power supply and the output voltage of power supply；Or when control signal makes including negative voltage
Can control signal when, triggering negative voltage comparator starts, so that negative voltage comparator compares the reference voltage and power supply of power supply
The relation of output voltage.
Still optionally further, the control method of the output voltage regulation circuit of the power supply of above-described embodiment, in step 101
" according to feedback signal, each switch conduction or disconnection in controlling switch module 3, to adjust the output voltage of power supply " specifically may be used
To include the following steps：
(11) according to feedback signal, when controlling the output voltage regulation circuit of power supply to boost the corresponding switch conduction or
Person disconnects, to improve the output voltage of power supply；
(12) according to feedback signal, the corresponding switch is led when controlling the output voltage regulation circuit of the power supply to be depressured
Logical or disconnection, to reduce the output voltage of power supply.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to
The relevant hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey
Sequence upon execution, execution the step of including above-mentioned each method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or
Person's CD etc. is various can be with the medium of store program codes.
Device embodiment described above is only schematical, wherein can be as the unit that separating component illustrates
Or may not be physically separate, physical location is may or may not be as the component that unit is shown, i.e.,
A place can be located at, or can also be distributed at least two network unit.It can be selected according to the actual needs
In some or all of module realize the purpose of this embodiment scheme.Those of ordinary skill in the art are not paying creativeness
Work in the case of, you can to understand and implement.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution described in foregoing embodiments, either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (6)
1. a kind of output voltage regulation circuit of power supply, it is characterised in that including comparison module, the first control module, switching molding
Block and the second control module；The comparison module includes positive voltage comparator and negative voltage comparator；Wrapped in the switch module
Include at least two switches；
Second control module, is connected with the positive voltage comparator and the negative voltage comparator respectively, outer for receiving
The enabled control signal that portion is sent, and according to the enabled control signal, trigger the positive voltage comparator and start or trigger
The negative voltage comparator starts, and the enabled control signal enables control signal including positive voltage or negative voltage enables control
Signal；
The comparison module, for the output voltage and the reference voltage of power supply according to power supply, generates feedback signal；
First control module, is connected with the comparison module and the switch module respectively, for according to the feedback letter
Number, the switching molding each switch conduction in the block or disconnection are controlled, to adjust the output voltage of the power supply.
2. the output voltage regulation circuit of power supply according to claim 1, it is characterised in that second control module,
Start specifically for when the control signal enables control signal including positive voltage, triggering the positive voltage comparator, so that
The positive voltage comparator generates the feedback signal according to the output voltage of the power supply and the reference voltage of the power supply；
Or second control module, for when the control signal enables control signal including negative voltage, described in triggering
Negative voltage comparator starts, so that the negative voltage comparator is according to the output voltage of the power supply and the reference electricity of the power supply
Pressure, generates the feedback signal.
3. according to the output voltage regulation circuit of any power supplys of claim 1-2, it is characterised in that first control
Module, corresponding institute when being specifically additionally operable to according to the feedback signal, control the output voltage regulation circuit of the power supply to boost
Switch conduction or disconnection are stated, to improve the output voltage of the power supply；
Or first control module, specifically it is additionally operable to, according to the feedback signal, control the output voltage tune of the power supply
The corresponding switch conduction or disconnection during the decompression of economize on electricity road, to reduce the output voltage of the power supply.
A kind of 4. control method of the output voltage regulation circuit of power supply, it is characterised in that including：
The exterior enabled control signal sent is received, the enabled control signal enables control signal or negative electricity including positive voltage
The enabled control signal of pressure；
According to the enabled control signal, triggering positive voltage comparator starts or triggering negative voltage comparator starts；
According to the output voltage of power supply and the reference voltage of power supply, feedback signal is generated；
According to the feedback signal, controlling switch mould each switch conduction in the block or disconnection, to adjust the output of the power supply
Voltage.
5. the control method of the output voltage regulation circuit of power supply according to claim 4, it is characterised in that according to described
Enabled control signal, triggers positive voltage comparator or triggering negative voltage comparator, specifically includes：
When the control signal enables control signal including positive voltage, trigger the positive voltage comparator and start, so that described
Positive voltage comparator generates the feedback signal according to the output voltage of the power supply and the reference voltage of the power supply；
Or when the control signal enables control signal including negative voltage, trigger the negative voltage comparator and start, so that
The negative voltage comparator generates the feedback signal according to the output voltage of the power supply and the reference voltage of the power supply.
6. according to the control method of the output voltage regulation circuit of any power supplys of claim 4-5, it is characterised in that institute
State according to the feedback signal, controlling switch mould each switch conduction in the block or disconnection, to adjust the output of power supply electricity
Pressure, specifically includes：
According to the feedback signal, when controlling the output voltage regulation circuit of the power supply to boost the corresponding switch conduction or
Person disconnects, to improve the output voltage of the power supply；
Or according to the feedback signal, the corresponding switch is led when controlling the output voltage regulation circuit of the power supply to be depressured
Logical or disconnection, to reduce the output voltage of the power supply.
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| CN201510641620.8A CN105099192B (en) | 2015-09-30 | 2015-09-30 | The output voltage regulation circuit and its control method of power supply |
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| CN201510641620.8A CN105099192B (en) | 2015-09-30 | 2015-09-30 | The output voltage regulation circuit and its control method of power supply |
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| CN105099192B true CN105099192B (en) | 2018-05-08 |
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| CN105356214B (en) * | 2015-12-16 | 2019-02-05 | 天津津芯微电子科技有限公司 | A laser energy control device and method |
| CN106291143B (en) * | 2016-07-18 | 2021-03-19 | 北京东方计量测试研究所 | Electrostatic potential monitoring device and method |
| CN111522382A (en) * | 2020-04-30 | 2020-08-11 | 深圳市十盏灯科技有限责任公司 | Live broadcast sound card voltage output control method and structure thereof |
| CN112986785B (en) * | 2021-04-27 | 2025-03-11 | 华电(烟台)功率半导体技术研究院有限公司 | An output digitally controlled adjustable drive module and method for power cycle experiment |
| CN115167608B (en) * | 2022-08-09 | 2023-05-09 | 北京智芯微电子科技有限公司 | Reverse voltage protection circuit, voltage adjustment circuit, electronic device and chip |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101499718A (en) * | 2008-02-02 | 2009-08-05 | 晶镁电子股份有限公司 | Control circuit and method of high-efficiency switching type voltage stabilizer |
| CN102055335A (en) * | 2009-11-03 | 2011-05-11 | 立锜科技股份有限公司 | Buck-boost power converter and its control method |
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| US20090039711A1 (en) * | 2007-08-08 | 2009-02-12 | Advanced Analogic Technologies, Inc. | Dual-Polarity Multi-Output DC/DC Converters and Voltage Regulators |
| US20100039080A1 (en) * | 2008-08-12 | 2010-02-18 | Toko, Inc. | Single-inductor buck-boost converter with positive and negative outputs |
| CN102055315B (en) * | 2009-10-30 | 2013-12-04 | 万国半导体(开曼)股份有限公司 | Inductance type change over device and energy control method |
| EP2571153A1 (en) * | 2011-09-16 | 2013-03-20 | ST-Ericsson SA | DCM and PFM management |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101499718A (en) * | 2008-02-02 | 2009-08-05 | 晶镁电子股份有限公司 | Control circuit and method of high-efficiency switching type voltage stabilizer |
| CN102055335A (en) * | 2009-11-03 | 2011-05-11 | 立锜科技股份有限公司 | Buck-boost power converter and its control method |
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