CN105099192A - Output voltage regulating circuit of power supply and control method of output voltage regulating circuit of power supply - Google Patents
Output voltage regulating circuit of power supply and control method of output voltage regulating circuit of power supply Download PDFInfo
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- CN105099192A CN105099192A CN201510641620.8A CN201510641620A CN105099192A CN 105099192 A CN105099192 A CN 105099192A CN 201510641620 A CN201510641620 A CN 201510641620A CN 105099192 A CN105099192 A CN 105099192A
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Abstract
The invention provides an output voltage regulating circuit of a power supply and a control method of the output voltage regulating circuit of the power supply. The output voltage regulating circuit of the power supply comprises a comparison module, a first control module and a switch module, wherein the switch module comprises at least two switches; the comparison module is used for generating feedback signals according to output voltage and reference voltage of the power supply; the first control module is connected with the comparison module and the switch module and used for controlling switching on or switching off of the switches in the switch module according to the feedback signals so as to regulate the output voltage of the power supply. With the adoption of the technical scheme, the output voltage regulating circuit of one power supply can be equivalent to the output voltage regulating circuit of different power supplies, the structure is simple, and the stability of the output voltage regulating circuit of the power supply is improved.
Description
Technical field
The present invention relates to power technique fields, particularly relate to a kind of output voltage regulation circuit and control method thereof of power supply.
Background technology
Along with the development of electronics technology and improving constantly of people's living standard, the use of various electronic product is more and more universal.Electronic product operationally needs stable operating voltage, in order to meet the operating voltage of electronic product, and usually can at printed circuit board (PCB) (PrintedCircuitBoard; PCB) output voltage regulation circuit of stable power supply is set, to regulate the output voltage of power supply according to actual conditions, enables the voltage of power supply stable output, electronic product can normally be worked.
The output voltage regulation circuit of power supply of the prior art generally includes boosting (Boost) regulating circuit, step-down (Buck) regulating circuit or buck (Buck-boost) regulating circuit.Wherein Boost regulating circuit and Buck regulating circuit are respectively in boosting and pressure reduction, and the outbound course of power supply can not change, and is positive supply; And Buck-boost regulating circuit power supply outbound course in boosting or pressure reduction can change, it is negative supply.
But in prior art, when needing at least two kinds of out-put supplies in electronic product, need to adopt the output voltage regulation circuit compound mode of above-mentioned any two kinds of power supplys or the output voltage regulation circuit compound mode of three kinds of power supplys to realize, separate between output voltage regulation circuit due to each power supply, cause the output voltage regulation circuit complex structure of power supply, reduce the stability of the output voltage regulation circuit of power supply.
Summary of the invention
The invention provides a kind of output voltage regulation circuit and control method thereof of power supply, to solve when needing at least two kinds of out-put supplies in electronic product, the output voltage regulation circuit compound mode of multiple power supply is needed to realize, and it is separate between output voltage regulation circuit due to each power supply, cause the output voltage regulation circuit complex structure of power supply, reduce the problem of the stability of the output voltage regulation circuit of power supply.
The invention provides a kind of output voltage regulation circuit of power supply, comprise comparison module, the first control module and switch module; Described switch module comprises at least two switches;
Described comparison module, for according to the output voltage of power supply and the reference voltage of power supply, generates feedback signal;
Described first control module, is connected with described comparison module and described switch module respectively, for according to described feedback signal, controls each switch conduction in described switch module or disconnection, to regulate the output voltage of described power supply.
The invention provides a kind of control method of output voltage regulation circuit of power supply, comprising:
According to the output voltage of power supply and the reference voltage of power supply, generate feedback signal;
According to described feedback signal, each switch conduction in control switch module or disconnection, to regulate the output voltage of described power supply.
The output voltage regulation circuit of power supply of the present invention and control method thereof, by the feedback signal that the first control module generates according to comparison module, each switch conduction in control switch module or disconnection, to regulate the output voltage of power supply, achieve and input power is converted into different out-put supplies.Adopt technical scheme of the present invention can when each switch working state is different, make the equivalence of a kind of output voltage regulation circuit of power supply become the output voltage regulation circuit of different power supplys, structure be simple, improves the stability of the output voltage regulation circuit of power supply.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of output voltage regulation circuit one embodiment of power supply of the present invention;
Fig. 2 is the structural representation of another embodiment of output voltage regulation circuit of power supply of the present invention;
Fig. 3 is the circuit diagram of the output voltage regulation circuit embodiment of power supply of the present invention;
Fig. 4 is the equivalent circuit diagram of a kind of operating state of Fig. 3;
Fig. 5 is the equivalent circuit diagram of the another kind of operating state of Fig. 3;
Fig. 6 is the equivalent circuit diagram of another operating state of Fig. 3;
Fig. 7 is the flow chart of the control method embodiment of the output voltage regulation circuit of power supply of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the structural representation of output voltage regulation circuit one embodiment of power supply of the present invention, and as shown in Figure 1, the output voltage regulation circuit of the power supply of the present embodiment can comprise comparison module 1, first control module 2 and switch module 3; Wherein, switch module 3 comprises at least two switches, and comparison module 1, for according to the output voltage of power supply and the reference voltage of power supply, 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 for the feedback signal of the generation according to comparison module 1, and each switch conduction in control switch module 3 or disconnection, to regulate the output voltage of power supply.
Such as, when using the output voltage regulation circuit of power supply of the present embodiment, the magnitude of voltage that this circuit needs to export can be determined in advance, the i.e. reference voltage of power supply, and the reference voltage of this power supply is obtained by comparison module 1, comparison module 1 is connected with the output of the output voltage regulation circuit of the power supply of the present embodiment simultaneously, thus is obtained the output voltage of power supply in the output voltage regulation circuit of this power supply by sampling, and generates feedback signal according to the output voltage of power supply and the reference voltage of power supply.The reference voltage of the output voltage and power supply that specifically can comprise power supply in this feedback signal carries out direction and the amplitude that matching ratio needs the output voltage of the power supply regulated more afterwards.Such as, when feedback signal is positive numerical value, can represent that current output voltage is higher, need to carry out reduction regulation; Or when feedback signal is negative numerical value, can represent that current output voltage is lower, need to carry out boosting and regulate.
Particularly, when adopting the comparator of difference in functionality, the reference voltage of the power supply that comparison module 1 obtains is different, but the reference voltage of the output voltage of power supply and power supply exists certain matching relationship.The reference voltage of such as power supply can be the actual value of the output voltage of power supply, now compares the magnitude relationship of the output voltage numerical value of power supply and the numerical value of reference voltage of sampling and obtaining, generates corresponding feedback signal; The reference voltage of power supply also can be the multiple value of the output voltage of power supply, now by the output voltage numerical value expansion of the power supply obtained of sampling or after reducing corresponding multiple, then compares with the reference voltage of power supply, generates corresponding feedback signal; The reference voltage of power supply can also be the difference with the output voltage of power supply, after now the output voltage numerical value of the power supply obtained of sampling being correspondingly processed, compare with the reference voltage of power supply again, generate corresponding feedback signal etc., illustrate no longer one by one at this.After comparison module 1 generates feedback signal according to the reference voltage of the output voltage of power supply and power supply, can be sent in the first control module 2.
First control module 2 specifically can adopt pulse width modulator (PulseWidthModulation; PWM) realize, after the first control module 2 receives the feedback signal of comparison module 1 transmission, according to direction and the amplitude of the output voltage of the power supply of feedback signal output, by the ON time of switch corresponding in the operating state of switch each in control switch module 3 and one-period and the duty ratio between total time, output voltage boosting or the step-down of the power supply of the present embodiment can be made, thus regulate the output voltage of power supply, meet the matching relationship of the output voltage of power supply and the reference voltage of power supply, reach the object that power good exports.
The output voltage regulation circuit of the power supply of the present embodiment, by the feedback signal that the first control module 2 generates according to comparison module 1, each switch conduction in control switch module 3 or disconnection, to regulate the output voltage of power supply, achieve and input power be converted into different out-put supplies.The technical scheme of employing the present embodiment can when each switch working state be different, and make the equivalence of a kind of output voltage regulation circuit of power supply become the output voltage regulation circuit of different power supplys, structure is simple, improves the stability of the output voltage regulation circuit of power supply.
Fig. 2 is the structural representation of another embodiment of output voltage regulation circuit of power supply of the present invention, and as shown in Figure 2, the output voltage regulation circuit of the power supply of the present embodiment, on basis embodiment illustrated in fig. 1, further comprises the second control module 4.As shown in Figure 2, comparison module 1 can comprise positive voltage comparator 11 and negative voltage comparator 12; Second control module 4 is connected with positive voltage comparator 11 and negative voltage comparator 12 respectively, second control module 4 is for receiving the outside enable control signal sent, and according to enable control signal, triggering positive voltage comparator 11 starts or triggers negative voltage comparator 12 and starts.Such as, the outside enable control signal sent is specifically as follows the main frame of the output voltage regulation circuit of this power supply of application, the out-put supply that main frame needs may be positive supply, also may be negative supply, the enable control signal that therefore main frame sends comprises the enable control signal of positive voltage or the enable control signal of negative voltage.
Further alternatively, second control module 4 is specifically for comprising the enable control signal of positive voltage during when the control signal received, power supply exports as positive supply, now trigger positive voltage comparator 11 to start, to make the output voltage of positive voltage comparator 11 according to power supply and the reference voltage of power supply, generate feedback signal; Or the second control module 4 is for comprising the enable control signal of negative voltage during when the control signal received, power supply is then needed to export as negative supply, now trigger negative voltage comparator 12 to start, with according to the output voltage of power supply and the reference voltage of power supply, generate feedback signal.
Such as, main frame can also send the regulated voltage signal corresponding with enable control signal by control command signal, universal serial bus (Inter-IntegratedCircuit with the 2-wire in the present embodiment; I
2c) agreement is example, by clock cable (SerialClock; And data signal line (SerialData SCL); SDA) send binary command and be given to the second control module 4, second control module 4 exports corresponding reference voltage according to control command signal, and after being obtained by positive voltage comparator 11 or negative voltage comparator 12, mate with the output voltage of corresponding power supply.
Particularly, when the output voltage of power supply does not mate with the reference voltage of power supply, the feedback signal that positive voltage comparator 11 or negative voltage comparator 12 export also is sent to the first control module 2, thus by the conducting state of each switch in the first control module 2 control switch module 3, form feedback network, and then regulate the output voltage of power supply, until meet the matching relationship of the output voltage of power supply and the reference voltage of power supply.Such as, the concrete feedback signal also for generating according to the positive voltage comparator 11 received or negative voltage comparator 12 of first control module 2, corresponding switch conduction or disconnection when the output voltage regulation circuit of control power supply boosts, to improve the output voltage of power supply; Or the concrete feedback signal also for generating according to positive voltage comparator 11 or negative voltage comparator 12 of the first control module 2, corresponding switch conduction or disconnection when controlling the output voltage regulation circuit step-down of power supply, to reduce the output voltage of power supply.
The output voltage regulation circuit of the power supply of the present embodiment, by the second control module 4 according to the enable control signal received, trigger positive voltage comparator 11 or negative voltage comparator 12, and the feedback signal generated by positive voltage comparator 11 or the negative voltage comparator 12 of the first control module 2 basis, each switch conduction in control switch module 3 or disconnection, not only can regulate the size of the output voltage of power supply, the direction of the output voltage of power supply can also be regulated, achieve and input power is converted into different out-put supplies.The technical scheme of employing the present embodiment can when each switch working state be different, and make the equivalence of a kind of output voltage regulation circuit of power supply become the output voltage regulation circuit of different power supplys, structure is simple, improves the stability of the output voltage regulation circuit of power supply.
Fig. 3 is the circuit diagram of the output voltage regulation circuit embodiment of power supply of the present invention, as shown in Figure 3, the output voltage regulation circuit of the power supply of the present embodiment, on basis embodiment illustrated in fig. 2, is described technical scheme of the present invention further in further detail.Wherein the first control module 2 specifically adopts PWM to realize, and each switch is with metal-oxide semiconductor (MOS) (MetalOxideSemiconductor; MOS) pipe realizes.Operation principle is as follows particularly:
When sending the enable control signal of positive voltage and corresponding regulated voltage signal externally to the second control module 4, the output voltage of power supply is identical with the input voltage direction of power supply, positive voltage comparator 11 works, when the output voltage obtaining power supply does not mate with power source reference voltage relationship, and the output voltage that the feedback signal generated comprises current power is higher, when needing to carry out reduction regulation, send feedback signal in PWM, PWM control switch K3 disconnects, K switch 4 conducting, and control switch K1 and K switch 2 alternating cyclical disconnect and conducting, the output voltage regulation circuit of the power supply of the present embodiment is made to be equivalent to reduction regulation circuit.Fig. 4 is the equivalent circuit diagram of a kind of operating state of Fig. 3.
As shown in Figure 4, load can be connected between positive supply output Vp and negative supply output Vn, and when K switch 1 conducting, when K switch 2 disconnects, input power Vin charges to inductance L, inductance L energy storage, and when K switch 1 disconnects, during K switch 2 conducting, inductance L powers to the load.Configuration switch K1 ON time is T
on1, K switch 1 opening time is T
off1, the work period of K switch 1 is T
s1, then T is had
s1=T
on1+ T
off1.The duty ratio D of setting K1 ON time
1=T
on1/ T
s1, then Vp=D is had
1vin, the output voltage of power supply is less than the input voltage of power supply, and by regulating the size of D, can regulate the size of Vp, making input power export positive voltage dropping power supply.
When sending the enable control signal of positive voltage and corresponding regulated voltage signal externally to main control module, the output voltage of power supply is identical with the input voltage direction of power supply, positive voltage comparator 11 works, when the output voltage obtaining power supply does not mate with power source reference voltage relationship, and the output voltage that the feedback signal generated comprises current power is lower, when needing to carry out boosting adjustment, send feedback signal in PWM, PWM control switch K1 and K switch 4 conducting, K switch 2 disconnects, and control switch K3 periodically disconnects and conducting, the output voltage regulation circuit of the power supply of the present embodiment is made to be equivalent to boosting regulating circuit.Fig. 5 is the equivalent circuit diagram of the another kind of operating state of Fig. 3.
As shown in Figure 5, load can be connected between positive supply output Vp and negative supply output Vn, when K switch 3 conducting, input power Vin charges to inductance L, inductance L energy storage, when K switch 3 disconnects, input power Vin and inductance L are simultaneously to load supplying, and configuration switch K3 ON time is T
on3, K switch 3 opening time is T
off3, the work period of K switch 3 is T
s3, then T is had
s3=T
on3+ T
off3.The duty ratio D of setting K1 ON time
2=T
on3/ T
s3, then Vp=Vin/ (1-D is had
2), the output voltage of power supply is greater than the input voltage of power supply, and can by regulating D
2size, regulate the size of Vp, make input power export positive booster power.
When sending the enable control signal of negative voltage and corresponding regulated voltage signal externally to main control module, the output voltage of power supply is different from the input voltage direction of power supply, negative voltage comparator 12 works, when the output voltage obtaining power supply does not mate with power source reference voltage relationship, send feedback signal in PWM, PWM control switch K3 conducting, K switch 4 disconnects, and control switch K1 and K switch 2 alternating cyclical disconnect and conducting, make the output voltage regulation circuit of the power supply of the present embodiment be equivalent to negative supply regulating circuit.Fig. 6 is the equivalent circuit diagram of another operating state of Fig. 3.
As shown in Figure 6, load can be connected between positive supply output Vp and negative supply output Vn, and when K switch 1 conducting, when K switch 2 disconnects, input power Vin charges to inductance L, inductance L energy storage, and when K switch 1 disconnects, during K switch 2 conducting, inductance L powers to the load.Configuration switch K1 ON time is T
on1＇, K switch 1 opening time is T
off1＇, the work period of K switch 1 is T
s1＇, then have T
s1＇=T
on1＇+T
off1＇.The duty ratio D of setting K1 ON time
3=T ＇
on1/ T ＇
s1, then Vn=D is had
3vin/ (D
3-1), due to D
3<1 is so the output voltage Vn of power supply is contrary with the input voltage vin direction of power supply, and the output voltage of power supply is by D
3size determine, work as D
3during >1/2, input power exports negative voltage dropping power supply, works as D
3during <1/2, input power exports negative booster power, therefore according to the feedback signal that negative voltage comparator 12 generates, by adjustment D
3size meet the output voltage of the power supply in feedback signal.
It should be noted that, second control module 4 can also be connected with output Vp and Vn of power supply, when output Vp and Vn of power supply needs to close, second control module 4 can control output Vp and Vn of this power supply by repid discharge path and ground connection, and conducting, make residual voltage repid discharge on the electric capacity of voltage regulation of output to ground, realize exporting quick turn-off function.
The output voltage regulation circuit of the power supply of the present embodiment, by the second control module 4 according to the energy control signal made received, trigger positive voltage comparator 11 or negative voltage comparator 12, and the feedback signal generated by positive voltage comparator 11 or the negative voltage comparator 12 of the first control module 2 basis, each switch conduction in control switch module 3 or disconnection, not only can regulate the size of the output voltage of power supply, the direction of the output voltage of power supply can also be regulated, achieve and input power is converted into different out-put supplies.The technical scheme of employing the present embodiment can when each switch working state be different, and make the equivalence of a kind of output voltage regulation circuit of power supply become the output voltage regulation circuit of different power supplys, structure is simple, improves the stability of the output voltage regulation circuit of power supply.
Fig. 7 is the flow chart of the control method embodiment of the output voltage regulation circuit of power supply of the present invention, and as shown in Figure 7, the control method of the output voltage regulation circuit of the power supply of the present embodiment, comprising:
100, according to the output voltage of power supply and the reference voltage of power supply, feedback signal is generated;
After the acquisition output voltage of power supply and the reference voltage of power supply, the output voltage of power supply can be mated with the reference voltage of power supply, generate corresponding feedback signal.
101, according to feedback signal, each switch conduction in control switch module or disconnection, to regulate the output voltage of power supply.
According to the feedback signal received, by controlling the switch needing conducting or needs to disconnect, thus the output voltage of power supply can be regulated, meeting the matching relationship of the output voltage of power supply and the reference voltage of power supply, reaching the object that power good exports.
The control method of the output voltage regulation circuit of the power supply of the present embodiment, be specifically as follows the using method of the output voltage regulation circuit of above-mentioned power supply embodiment illustrated in fig. 1, realize regulating identical with above-mentioned realization mechanism embodiment illustrated in fig. 1 to the output voltage of power supply, with reference to the relevant record of above-described embodiment, can not repeat them here in detail.
The output voltage regulation circuit of the power supply of the present embodiment, by the feedback signal generated according to the output voltage of power supply and the reference voltage of power supply, each switch conduction in control switch module or disconnection, to regulate the output voltage of power supply, achieve and input power is converted into different out-put supplies.The technical scheme of employing the present embodiment can when each switch working state be different, and a kind of output voltage regulation circuit of power supply is changed into the output voltage regulation circuit of different power supplys, structure is simple, improves the stability of the output voltage regulation circuit of power supply.
Further alternatively, the control method of the output voltage regulation circuit of the power supply of above-described embodiment, before step 100 " according to the output voltage of power supply and the reference voltage of power supply; generate feedback signal ", the control method of the output voltage regulation circuit of the power supply of the present embodiment, can also comprise the steps:
(1) the outside enable control signal sent is received;
Such as, enable control signal comprises the enable control signal of positive voltage or the enable control signal of negative voltage.
(2) according to the enable control signal received, trigger positive voltage comparator and start or trigger the startup of negative voltage comparator.
Particularly, when control signal comprises the enable control signal of positive voltage, trigger positive voltage comparator and start, with the relation making positive voltage comparator compare the reference voltage of power supply and the output voltage of power supply; Or when control signal comprises the enable control signal of negative voltage, trigger negative voltage comparator and start, with the relation making negative voltage comparator compare the reference voltage of power supply and the output voltage of power supply.
Further alternatively, the control method of the output voltage regulation circuit of the power supply of above-described embodiment, specifically can comprise the steps: in step 101 " according to feedback signal, each switch conduction in control switch module 3 or disconnection, to regulate the output voltage of power supply "
(11) according to feedback signal, corresponding described switch conduction or disconnection when the output voltage regulation circuit of control power supply boosts, to improve the output voltage of power supply;
(12) according to feedback signal, corresponding described switch conduction or disconnection when controlling the output voltage regulation circuit step-down of described power supply, to reduce the output voltage of power supply.
One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each embodiment of the method can have been come by the hardware that program command is relevant.Aforesaid program can be stored in a computer read/write memory medium.This program, when performing, performs the step comprising above-mentioned each embodiment of the method; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Device embodiment described above is only schematic, the unit wherein illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed at least two network element.Some or all of module wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.Those of ordinary skill in the art, when not paying performing creative labour, are namely appreciated that and implement.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. an output voltage regulation circuit for power supply, is characterized in that, comprises comparison module, the first control module and switch module; Described switch module comprises at least two switches;
Described comparison module, for according to the output voltage of power supply and the reference voltage of power supply, generates feedback signal;
Described first control module, is connected with described comparison module and described switch module respectively, for according to described feedback signal, controls each switch conduction in described switch module or disconnection, to regulate the output voltage of described power supply.
2. the output voltage regulation circuit of power supply according to claim 1, is characterized in that, the output voltage regulation circuit of described power supply also comprises the second control module, and described comparison module comprises positive voltage comparator and negative voltage comparator; Described second control module, be connected with described positive voltage comparator and described negative voltage comparator respectively, for receiving the outside enable control signal sent, and according to described enable control signal, triggering described positive voltage comparator and start or trigger the startup of described negative voltage comparator.
3. the output voltage regulation circuit of power supply according to claim 2, is characterized in that, described enable control signal comprises the enable control signal of positive voltage or the enable control signal of negative voltage.
4. the output voltage regulation circuit of power supply according to claim 3, it is characterized in that, described second control module, during specifically for comprising the enable control signal of described positive voltage when described control signal, trigger described positive voltage comparator to start, to make described positive voltage comparator according to the reference voltage of the output voltage of described power supply and described power supply, generate described feedback signal;
Or described second control module, during for comprising the enable control signal of negative described voltage when described control signal, trigger described negative voltage comparator to start, to make described negative voltage comparator according to the reference voltage of the output voltage of described power supply and described power supply, generate described feedback signal.
5. according to the output voltage regulation circuit of the arbitrary described power supply of claim 1-4, it is characterized in that, described first control module, concrete also for according to described feedback signal, corresponding described switch conduction or disconnection when controlling the output voltage regulation circuit boosting of described power supply, to improve the output voltage of described power supply;
Or described first control module, specifically also for according to described feedback signal, corresponding described switch conduction or disconnection when controlling the output voltage regulation circuit step-down of described power supply, to reduce the output voltage of described power supply.
6. a control method for the output voltage regulation circuit of power supply, is characterized in that, comprising:
According to the output voltage of power supply and the reference voltage of power supply, generate feedback signal;
According to described feedback signal, each switch conduction in control switch module or disconnection, to regulate the output voltage of described power supply.
7. the control method of the output voltage regulation circuit of power supply according to claim 6, it is characterized in that, described according to the output voltage of power supply and the reference voltage of power supply, before generating feedback signal, the control method of the output voltage regulation circuit of described power supply also comprises:
Receive the outside enable control signal sent;
According to described enable control signal, trigger positive voltage comparator and start or trigger the startup of negative voltage comparator.
8. the control method of the output voltage regulation circuit of power supply according to claim 7, is characterized in that, described enable control signal comprises the enable control signal of positive voltage or the enable control signal of negative voltage.
9. the control method of the output voltage regulation circuit of power supply according to claim 8, is characterized in that, according to described enable control signal, triggers positive voltage comparator or triggers negative voltage comparator, specifically comprising:
When described control signal comprises the enable control signal of described positive voltage, trigger described positive voltage comparator and start, to make described positive voltage comparator according to the reference voltage of the output voltage of described power supply and described power supply, generate described feedback signal;
Or when described control signal comprises the enable control signal of described negative voltage, trigger described negative voltage comparator and start, to make described negative voltage comparator according to the reference voltage of the output voltage of described power supply and described power supply, generate described feedback signal.
10., according to the control method of the output voltage regulation circuit of the arbitrary described power supply of claim 6-9, it is characterized in that, described according to comparison result, each switch conduction in control switch module or disconnection, to regulate the output voltage of described power supply, specifically comprise:
According to described feedback signal, corresponding described switch conduction or disconnection when controlling the output voltage regulation circuit boosting of described power supply, to improve the output voltage of described power supply;
Or according to described feedback signal, corresponding described switch conduction or disconnection when controlling the output voltage regulation circuit step-down of described power supply, to reduce the output voltage of described power supply.
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| CN106291143A (en) * | 2016-07-18 | 2017-01-04 | 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 |
| CN115167608A (en) * | 2022-08-09 | 2022-10-11 | 北京智芯微电子科技有限公司 | Reverse voltage protection circuit, voltage regulation circuit, electronic device and chip |
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| CN105356214A (en) * | 2015-12-16 | 2016-02-24 | 天津津芯微电子科技有限公司 | Laser energy control device and method |
| CN105356214B (en) * | 2015-12-16 | 2019-02-05 | 天津津芯微电子科技有限公司 | A kind of laser energy attenuation device and method |
| CN106291143A (en) * | 2016-07-18 | 2017-01-04 | 北京东方计量测试研究所 | Electrostatic potential monitoring 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 |
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