CN105353816A - Method for stabilizing power supply, power supply and electronic device - Google Patents
Method for stabilizing power supply, power supply and electronic device Download PDFInfo
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- CN105353816A CN105353816A CN201410412606.6A CN201410412606A CN105353816A CN 105353816 A CN105353816 A CN 105353816A CN 201410412606 A CN201410412606 A CN 201410412606A CN 105353816 A CN105353816 A CN 105353816A
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Abstract
The invention discloses a method for stabilizing a power supply, the power supply and an electronic device. The method for stabilizing the power supply comprises that the current voltage value of a power supply normal input signal of the power supply is monitored; whether the current voltage value is smaller than a threshold voltage value or not is judged, and a first judgement result is obtained; when the first judgement result is 'yes', a first access is controlled to be powered on, and the first access is formed in a way that the output terminal of the power supply is connected with the ground through a first load; when the first judgement result is 'no', the first access is controlled to be cut off.
Description
Technical field
The present invention relates to electronic technology field, particularly relate to a kind of method of stabilized power source, power supply and electronic equipment.
Background technology
Along with the development of electronic technology, electronic equipment has different duties, and under different duties, the load of electronic equipment is different.When electronic equipment switches between different duties, the load of electronic equipment can sharply dynamic change.Such as: electronic equipment is switched to from sleep operation state and wakes duty up, or electronic equipment is from when temporarily the state of quitting work is switched to the duty running large software, and the load of electronic equipment all can sharply dynamic change.
For solving the above-mentioned load because of the electronic equipment sharply dynamic change technical matters that causes the loop stability of power supply to reduce, the solution that prior art provides is: add fictitious load at power source internal, strengthens the stability of electric power loop during the load dynamic change of electronic equipment.
But present inventor is in the process realizing invention technical scheme in the embodiment of the present application, find that above-mentioned technology at least exists following technical matters:
In prior art, the electric current of electric consumption can be continued in the fictitious load of power source internal, reduce the conversion efficiency of power supply.
Summary of the invention
The embodiment of the present invention is by providing a kind of method of stabilized power source, power supply and electronic equipment, the fictitious load solving power source internal of the prior art reduces the technical matters of the conversion efficiency of power supply, provide a kind of method adding active fictitious load at power source internal newly, achieve the technique effect of the conversion efficiency improving power supply.
First aspect, the invention provides a kind of method of stabilized power source, comprising:
Monitor the current voltage value of the power supply normal input signal of described power supply;
Judge whether described current voltage value is less than a threshold voltage, obtain the first judged result;
When described first judged result is for being, control the first path conducting, described first path is the path that the output terminal of described power supply is connected to ground by the first load;
When described first judged result is no, control described first path open circuit.
Second aspect, the invention provides a kind of power supply, and described power supply comprises:
Comparison module, for monitoring the current voltage value of the power supply normal input signal of described power supply, and judging whether described current voltage value is greater than a threshold voltage, obtaining the first judged result;
Processing module, is connected with described comparison module, for when described first judged result is for being, controls the first path conducting, and described first path is the path that the output terminal of described power supply is connected to ground by the first load; When described first judged result is no, control described first path open circuit.
Optionally, when described comparison module is comparer:
The first input end of described comparer and a reference voltage model calling, the described threshold voltage that the voltage on described first input end provides for described reference voltage module;
Second input end of described comparer is connected with a power supply normal input signal output module, the current voltage value of the described power supply normal input signal that the voltage on described second input end provides for described power supply normal input signal output module;
Wherein, when the current voltage value of described power supply normal input signal is greater than described threshold voltage, the output terminal of described comparer exports the first signal;
When the current voltage value of described power supply normal input signal is less than or equal to described threshold voltage, the output terminal of described comparer exports secondary signal.
Optionally, when described processing module is triode:
The base stage of described triode is connected with the output terminal of described comparer, receives described first signal or described secondary signal;
The collector of described triode is connected with described first load;
The emitter of described triode is connected to ground;
Wherein, when the base stage of described triode receives described first signal, described triode is in conducting state, controls the first path conducting, and described first path is the path that the output terminal of described power supply is connected to ground by the first load;
When the base stage of described triode receives described secondary signal, described triode is in cut-off state, controls described first path open circuit.
Optionally, described reference voltage module specifically comprises:
First resistance, is connected with the output terminal of described power supply;
Second resistance, is connected with described first resistance, described first input end and ground;
First electric capacity, is connected in parallel on the two ends of described second resistance.
Optionally, described power supply normal input signal output module specifically comprises:
Power supply normal input signal input end, provides the magnitude of voltage of power supply normal input signal;
Filtration module, be connected with described power supply normal input signal input end, receive the magnitude of voltage of described power supply normal input signal, described filtration module comprises:
3rd resistance, is connected with described power supply normal input signal input end and described second input end;
Second electric capacity, is connected with described 3rd resistance and ground.
Optionally, described power supply also comprises:
Biasing module, is connected with the output terminal of described comparer and the base stage of described triode;
Described biasing module comprises:
4th resistance, is connected with the output terminal of described comparer and the base stage of described triode;
5th resistance, is connected with described 4th resistance and ground.
Optionally, described power supply also comprises:
Hysteresis module, is connected with the collector of described reference voltage module, described first load and described triode;
Described hysteresis module comprises:
6th resistance, is connected with described first resistance, described second resistance and described first input end;
Diode, the positive pole of described diode is connected with described 6th resistance, and the negative pole of described diode is connected with the collector of described first load and described triode.
The third aspect, the invention provides a kind of electronic equipment, comprising:
One circuit board;
Power supply, described power supply is the power supply described in claim arbitrary in claim 2-8, and described power supply is used for powering to described circuit board.
The one or more technical schemes provided in the embodiment of the present invention, at least have following technique effect:
One, in the embodiment of the present invention, utilize the current voltage value of the power supply normal input signal of the power supply of electronic equipment to drive fictitious load, when the current voltage value of power supply normal input signal is less than threshold voltage, control the first load access, otherwise, control the first load and disconnect.Provide a kind of active fictitious load, only when needs stabilized power source loop, fictitious load is accessed, and when not needing stabilized power source loop, fictitious load is disconnected, improve the conversion efficiency of power supply.Provide a kind of method of driving fictitious load newly on the one hand, expand the purposes of voltage normal input signal on the other hand.
Two, in the embodiment of the present invention, utilize triode to start fictitious load, when the voltage in the base stage of triode is greater than forward voltage, triode ON, fictitious load accesses, otherwise triode ends, and fictitious load disconnects.Whether fictitious load accesses or disconnects, depend on whether the current voltage value of power supply normal input signal is less than threshold voltage, wherein, when the current voltage value of power supply normal input signal is less than threshold voltage, voltage in the base stage of triode is greater than forward voltage, triode ON, otherwise triode ends.Utilize the characteristic of triode, provide a kind of mode of startup fictitious load newly.
Three, in the embodiment of the present invention, provide a kind of in establish the power supply of active fictitious load, circuit is simple, and make full use of power source internal and have element, power supply cost is substantially constant.
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 only embodiments of the 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 the accompanying drawing provided.
Fig. 1 is the process flow diagram of the method for a kind of stabilized power source in the embodiment of the present invention one;
The structural drawing of a kind of power supply that Fig. 2 provides for the embodiment of the present invention two;
Fig. 2 A is the structural drawing of comparer in the embodiment of the present invention two;
Fig. 2 B is the structural drawing of triode in the embodiment of the present invention two;
Fig. 2 C is the structural drawing of reference voltage module in the embodiment of the present invention two;
Fig. 2 D is the structural drawing of power supply normal input signal output module in the embodiment of the present invention two;
Fig. 2 E is the structural drawing of biasing module in the embodiment of the present invention two;
Fig. 2 F is the structural drawing of hysteresis module 26 in the embodiment of the present invention two;
The module map of a kind of electronic equipment that Fig. 3 provides for the embodiment of the present invention three.
Embodiment
Clearly understand for making the object, technical solutions and advantages of the present invention, 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 only 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.When not conflicting, the embodiment in the present invention and the feature in embodiment can combination in any mutually.Can perform in the computer system of such as one group of computer executable instructions in the step shown in the process flow diagram of accompanying drawing.Further, although show logical order in flow charts, in some cases, can be different from the step shown or described by order execution herein.
The embodiment of the present invention is by providing a kind of method of stabilized power source, power supply and electronic equipment, the fictitious load solving power source internal of the prior art reduces the technical matters of the conversion efficiency of power supply, provide a kind of method adding active fictitious load at power source internal newly, achieve the technique effect of the conversion efficiency improving power supply.
Technical scheme in the embodiment of the present invention is for solving the problems of the technologies described above, and general thought is as follows:
A kind of method of stabilized power source is provided, comprises: the current voltage value of monitoring the power supply normal input signal of described power supply; Judge whether described current voltage value is less than a threshold voltage, obtain the first judged result; When described first judged result is for being, control the first path conducting, described first path is the path that the output terminal of described power supply is connected to ground by the first load; When described first judged result is no, control described first path open circuit.
In the embodiment of the present invention, utilize the current voltage value of the power supply normal input signal of the power supply of electronic equipment to drive fictitious load, when the current voltage value of power supply normal input signal is less than threshold voltage, control the first load access, otherwise, control the first load and disconnect.Provide a kind of active fictitious load, only when needs stabilized power source loop, fictitious load is accessed, and when not needing stabilized power source loop, fictitious load is disconnected, improve the conversion efficiency of power supply.Provide a kind of method of driving fictitious load newly on the one hand, expand the purposes of voltage normal input signal on the other hand.
In order to better understand technique scheme, below in conjunction with Figure of description and concrete embodiment, technique scheme is described in detail.The specific features being to be understood that in the present invention and embodiment is the detailed description to technical solution of the present invention, instead of limitation of the invention, and when not conflicting, the technical characteristic in the embodiment of the present invention and embodiment can combine mutually.
Embodiment one
Please refer to Fig. 1, the process flow diagram of the method for a kind of stabilized power source that Fig. 1 provides for the embodiment of the present invention one, described method comprises:
Step 11: the current voltage value of monitoring the power supply normal input signal of described power supply;
Step 12: judge whether described current voltage value is less than a threshold voltage, obtain the first judged result;
Step 13: when described first judged result is for being, control the first path conducting, described first path is the path that the output terminal of described power supply is connected to ground by the first load;
Step 14: when described first judged result is no, controls described first path open circuit.
In specific implementation process, power supply is for providing the device of electric energy to electronic equipment, whether the electric current that power supply inputs to electronic equipment and voltage are stablized, and directly affect serviceability and the service efficiency of electronic equipment.When power supply chip (the English full name: PowerGoodInput that detects that the power supply of power supply normally inputs; English abbreviation: PGI) magnitude of voltage of signal is not less than threshold voltage, and will to normal (the English full name: PowerGood of electronic equipment input power; English abbreviation: PG) signal, electronic equipment can normally work, and when power supply chip detects that the magnitude of voltage of the PGI signal of power supply is less than threshold voltage, the PG signal to electronic equipment input will break, and electronic equipment just can not normally work.
Such as: given threshold voltage is 1.25 volts, when the magnitude of voltage of the PGI signal of power supply is not less than 1.25 volts, power supply is to electronic equipment input PG signal, and electronic equipment normally works.When the magnitude of voltage of the PGI signal of power supply is less than in 1.25 volts, the PG signal that power supply inputs to electronic equipment will break, and electronic equipment will be restarted or shut down.
Therefore, in the embodiment of the present invention, when magnitude of voltage in order to PGI signal power supply being detected at power supply chip is less than threshold voltage, electronic equipment is made to keep normal work, access fictitious load, increase the load of electronic equipment, make electric power loop keep stable, and then keep to electronic equipment input PG signal.
Still illustrate with above-mentioned example, when the load dynamic change of electronic equipment causes the magnitude of voltage of the PGI signal of power supply will be less than 1.25V, by adding that fictitious load increases the magnitude of voltage of PGI signal, make it be greater than 1.25V, the PG signal that such power supply inputs to electronic equipment would not break.
In the embodiment of the present invention, first perform step 11, the current voltage value of the PGI signal of monitoring power supply.Because the magnitude of voltage of PGI signal can change with the dynamic change of the load of electronic equipment, when the load of electronic equipment is large, the magnitude of voltage of PGI signal is large, the magnitude of voltage of the load hour PGI signal of electronic equipment is little, so to electronic equipment input PG signal, need the magnitude of voltage of the PGI signal of Real-Time Monitoring power supply in order to keep.When electronic equipment normally works, the magnitude of voltage of PGI signal is usually between 1.8 volts to 2.5 volts.
Then, perform step 12, the current voltage value of acquisition is compared with a threshold voltage, judges whether current voltage value is less than threshold voltage.Threshold voltage in the embodiment of the present invention can be artificial setting, such as: using the minimum input voltage of power supply as threshold voltage, or will be greater than arbitrary magnitude of voltage of the minimum input voltage of power supply as threshold voltage.Threshold voltage in the embodiment of the present invention also can be electronic equipment setting, such as: the minimum input voltage being not only greater than power supply is greater than electronic equipment and normally works the magnitude of voltage of required minimum voltage as threshold voltage.
Finally, according to comparative result, perform step 13 or step 14.If current voltage value is less than threshold voltage, normal work is kept in order to make electronic equipment, need to have accessed fictitious load, so control the first path conducting, the path conducting that the output terminal namely controlling power supply is connected to ground by the first load, accesses the first load as fictitious load, increase the load of electronic equipment, the magnitude of voltage of PGI signal is increased to and is not less than threshold voltage, and then make electric power loop keep stable, and then keep to electronic equipment input PG signal.
If current voltage value is not less than threshold voltage, then illustrate that the load of current electronic device does not sharply drop to and be less than threshold voltage, now electric power loop is stablized, power supply continues to electronic equipment input PG signal, do not need to access fictitious load, in order to improve the conversion efficiency of power supply, control the first path open circuit, the path that the output terminal namely controlling power supply is connected to ground by the first load disconnects.
In the embodiment of the present invention, in execution of step 13, first load is accessed as fictitious load, increases the load of electronic equipment, after the magnitude of voltage of PGI signal being increased to be not less than threshold voltage, the magnitude of voltage of monitoring the PGI signal after increasing can also be continued, and judge whether the magnitude of voltage of the PGI signal after increasing is less than threshold voltage, if be less than threshold voltage, perform step 13, if be not less than threshold voltage, perform step 14.
Embodiment two
Please refer to Fig. 2, the structural drawing of a kind of power supply that Fig. 2 provides for the embodiment of the present invention two, described power supply 20 comprises:
Comparison module 21, the power supply for monitoring described power supply normally inputs the current voltage value of PGI signal, and judges whether described current voltage value is greater than a threshold voltage, obtains the first judged result;
Processing module 22, is connected with described comparison module, for when described first judged result is for being, controls the first path conducting, and described first path is the path that the output terminal VCC of described power supply is connected to ground by the first load 8; When described first judged result is no, control described first path open circuit.
As shown in Figure 2, described power supply 20 can also comprise: reference voltage module 23, power supply normal input signal output module 24, biasing module 25, hysteresis module 26.
In the embodiment of the present invention, comparison module 21 can be: comparer, ASIC (English full name: ApplicationSpecificIntegratedCircuit, Chinese full name: special IC) or processor.Every can power supply the current voltage value of power supply normal input signal and the device made a decision can be all comparison module 21.
In the embodiment of the present invention, when comparison module 21 is comparer, please refer to Fig. 2 A, Fig. 2 A is the structural drawing of comparer in the embodiment of the present invention two:
The first input end 211 of described comparer is connected with a reference voltage module 23, the described threshold voltage that the voltage on described first input end provides for described reference voltage module;
Second input end 212 of described comparer is connected with a power supply normal input signal output module 24, the current voltage value of the described power supply normal input signal that the voltage on described second input end provides for described power supply normal input signal output module;
Wherein, when the current voltage value of described power supply normal input signal is greater than described threshold voltage, the output terminal 213 of described comparer exports the first signal;
When the current voltage value of described power supply normal input signal is less than or equal to described threshold voltage, the output terminal 213 of described comparer exports secondary signal.
Comparer is also connected with power output end VCC and ground.
In the embodiment of the present invention, processing module 22 can be: triode, switch chip or ASIC.Every device that can play on-off action can be all processing module 22.
In the embodiment of the present invention, when described process mould 22 is triode, please refer to Fig. 2 B, Fig. 2 B is the structural drawing of triode in the embodiment of the present invention two:
The base stage 221 of described triode is connected with the output terminal 213 of described comparer, receives described first signal or described secondary signal;
The collector 222 of described triode is connected with described first load 8;
The emitter 223 of described triode is connected to ground;
Wherein, when the base stage 221 of described triode receives described first signal, described triode is in conducting state, controls the first path conducting, and described first path is the path that the output terminal of described power supply is connected to ground by the first load;
When the base stage 221 of described triode receives described secondary signal, described triode is in cut-off state, controls described first path open circuit.
In the embodiment of the present invention, processing module 22 can be NPN type triode or PNP type triode, and the embodiment about PNP type triode specifically can with reference to the above-mentioned explanation about NPN type triode.
Specifically, when electronic equipment normally works, the magnitude of voltage of PGI signal usually between 1.8 volts to 2.5 volts, by reference voltage module by threshold voltage settings at about 1.4V.
When the load of electronic equipment is normal, the magnitude of voltage of PGI signal is not less than threshold voltage, namely the voltage of the second input end of comparer is not less than the voltage of first input end, therefore the output terminal output low level of comparer, the base stage of triode is low level, triode not conducting, fictitious load disconnects.
When the load of electronic equipment diminishes suddenly, the magnitude of voltage of PGI signal can be caused to reduce, when the magnitude of voltage of PGI signal is less than threshold voltage, namely the voltage of the second input end of comparer is less than the voltage of first input end, therefore the output terminal of comparer exports high level, the base stage of triode is high level, triode ON, fictitious load adds, the load of electronic equipment is increased, and then the magnitude of voltage of PGI signal is increased to be not less than threshold voltage, the PG signal that such power supply exports just can maintain normally, can not break.
When the load restoration of electronic equipment is to time normal, the magnitude of voltage of the PGI signal of power supply returns between normal range 1.8 volts to 2.5 volts, the magnitude of voltage of PGI signal is not less than threshold voltage, namely the voltage of the second input end of comparer is not less than the voltage of first input end, therefore the output terminal output low level of comparer, the base stage of triode is low level, and triode not conducting, fictitious load disconnects again.
In one embodiment of this invention, reference voltage module 23, for providing threshold voltage, please refer to Fig. 2 C, and Fig. 2 C is the structural drawing of reference voltage module in the embodiment of the present invention two, and reference voltage module 23 specifically comprises:
First resistance 231, is connected with the output terminal VCC of described power supply;
Second resistance 232, is connected with described first resistance 231, described first input end 211 and ground;
First electric capacity 233, is connected in parallel on the two ends of described second resistance 232.
Specifically, the size of adjustment first resistance 231, second resistance 232 and the first electric capacity 233 can be passed through, carry out the size of set threshold voltage.Wherein, the first electric capacity is common filter capacitor, and size is 0.01 microfarad.
In another embodiment of the invention, power supply normal input signal output module 24 is for providing the current voltage value of power supply normal input signal, please refer to Fig. 2 D, Fig. 2 D is the structural drawing of power supply normal input signal output module in the embodiment of the present invention two, and power supply normal input signal output module 24 specifically comprises:
Power supply normal input signal input end 241, provides the magnitude of voltage of power supply normal input signal;
Filtration module 242, be connected with described power supply normal input signal input end, receive the magnitude of voltage of described power supply normal input signal, described filtration module comprises:
3rd resistance 2421, is connected with described power supply normal input signal input end 241 and described second input end 212;
Second electric capacity 2422, is connected with described 3rd resistance 2421 and ground.
Specifically, filtration module 242, for some clutters in filter out power normal input signal, makes the magnitude of voltage of the power supply PGI signal of the second input end input to comparer smoother.Wherein, the first electric capacity is common filter capacitor, and size is 0.01 microfarad.
In another embodiment of the present invention, please refer to Fig. 2 E, Fig. 2 E is the structural drawing of biasing module 25 in the embodiment of the present invention two:
Biasing module 25, is connected with the output terminal 213 of described comparer and the base stage 221 of described triode;
Described biasing module 25 comprises:
4th resistance 251, is connected with the output terminal 213 of described comparer and the base stage 221 of described triode;
5th resistance 252, is connected with described 4th resistance 251 and ground.
Specifically, comparer is connected with the output terminal of power supply, because the voltage on power output end is usually different from the voltage required for turn-on transistor, so need to provide biasing resistor by biasing module, carry out dividing potential drop to the voltage on power output end, the voltage that the base stage of triode is accessed can turn-on transistor.
In one more embodiment of the present invention, please refer to Fig. 2 F, Fig. 2 F is the structural drawing of hysteresis module 26 in the embodiment of the present invention two:
Hysteresis module 26, is connected with the collector 222 of described reference voltage module 23, described first load 8 and described triode;
Described hysteresis module 26 comprises:
6th resistance 261, is connected with described first resistance 231, described second resistance 232 and described first input end 211;
Diode 262, the positive pole of described diode is connected with described 6th resistance 261, and the negative pole of described diode is connected with the collector 222 of described first load 8 and described triode.
Specifically, hysteresis module is used for avoiding triode to switch between conducting state and cut-off state continually.Because during triode ON, also the conducting of diode, diode and the 6th resistance all access, now, 6th resistance and the second resistor coupled in parallel, to change the threshold voltage that reference voltage module provides, by the setting of the resistance to the 6th resistance, threshold voltage can be increased, and then avoid triode to switch between conducting state and cut-off state continually.
Given threshold voltage is 1.4 volts originally, and the magnitude of voltage of PGI signal is 1.25 volts, is less than 1.4 volts, triode ON, fictitious load adds, and the magnitude of voltage of PGI signal is increased to 1.5 volts, and now diode also conducting, 6th resistance and the second resistor coupled in parallel, threshold voltage increases, and becomes 1.6 volts, then need to detect the magnitude of voltage of PGI signal be not less than increase after threshold voltage, triode can end, and obviously, is delayed triode is switched to cut-off state time by conducting state.
Embodiment three
Based on same inventive concept, the embodiment of the present invention three also provides a kind of electronic equipment, please refer to Fig. 3, the module map of a kind of electronic equipment that Fig. 3 provides for the embodiment of the present invention three.Electronic equipment 30 comprises:
One circuit board 31;
Power supply 20, described power supply is the power supply in embodiment two described in any embodiment, and described power supply is used for powering to described circuit board.
In specific implementation process, described electronic equipment can be notebook computer, also can be panel computer, can also be smart mobile phone.Described circuit board can be mainboard, also can be single sided board, dual platen can also be multilayer circuit board.
Power supply 20 is connected with circuit board 31, powers to circuit board 31.Power supply can monitor the current voltage value of the power supply normal input signal of described power supply, then judges whether described current voltage value is less than a threshold voltage, obtains the first judged result.When described first judged result is for being, control the first path conducting, described first path is the path that the output terminal of described power supply is connected to ground by the first load; When described first judged result is no, control described first path open circuit.
Concrete implementation procedure can explanation in reference example one, is not just described in detail at this.
The one or more technical schemes provided in the embodiment of the present invention, at least have following technique effect or advantage:
One, in the embodiment of the present invention, utilize the current voltage value of the power supply normal input signal of the power supply of electronic equipment to drive fictitious load, when the current voltage value of power supply normal input signal is less than threshold voltage, control the first load access, otherwise, control the first load and disconnect.Provide a kind of active fictitious load, only when needs stabilized power source loop, fictitious load is accessed, and when not needing stabilized power source loop, fictitious load is disconnected, improve the conversion efficiency of power supply.Provide a kind of method of driving fictitious load newly on the one hand, expand the purposes of voltage normal input signal on the other hand.
Two, in the embodiment of the present invention, utilize triode to start fictitious load, when the voltage in the base stage of triode is greater than forward voltage, triode ON, fictitious load accesses, otherwise triode ends, and fictitious load disconnects.Whether fictitious load accesses or disconnects, depend on whether the current voltage value of power supply normal input signal is less than threshold voltage, wherein, when the current voltage value of power supply normal input signal is less than threshold voltage, voltage in the base stage of triode is greater than forward voltage, triode ON, otherwise triode ends.Utilize the characteristic of triode, provide a kind of mode of startup fictitious load newly.
Three, in the embodiment of the present invention, provide a kind of in establish the power supply of active fictitious load, circuit is simple, and make full use of power source internal and have element, power supply cost is substantially constant.
Those skilled in the art should understand, the embodiment of the application can be provided as method, system or computer program.Therefore, the application can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the application can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code.
The application describes with reference to according to the process flow diagram of the method for the embodiment of the present application, equipment (system) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computing machine or other programmable data processing device produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make on computing machine or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computing machine or other programmable devices is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Specifically, a kind of information processing method in the embodiment of the present application is applied in electronic equipment, described electronic equipment comprises the first speech engine and the second speech engine, computer program instructions corresponding to described method can be stored in CD, hard disk, on the storage mediums such as USB flash disk, when the computer program instructions corresponding with a kind of information processing method in storage medium is read by an electronic equipment or be performed, comprise the steps:
Monitor the current voltage value of the power supply normal input signal of described power supply;
Judge whether described current voltage value is less than a threshold voltage, obtain the first judged result;
When described first judged result is for being, control the first path conducting, described first path is the path that the output terminal of described power supply is connected to ground by the first load;
When described first judged result is no, control described first path open circuit.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (9)
1. a method for stabilized power source, described method comprises:
Monitor the current voltage value of the power supply normal input signal of described power supply;
Judge whether described current voltage value is less than a threshold voltage, obtain the first judged result;
When described first judged result is for being, control the first path conducting, described first path is the path that the output terminal of described power supply is connected to ground by the first load;
When described first judged result is no, control described first path open circuit.
2. a power supply, described power supply comprises:
Comparison module, for monitoring the current voltage value of the power supply normal input signal of described power supply, and judging whether described current voltage value is greater than a threshold voltage, obtaining the first judged result;
Processing module, is connected with described comparison module, for when described first judged result is for being, controls the first path conducting, and described first path is the path that the output terminal of described power supply is connected to ground by the first load; When described first judged result is no, control described first path open circuit.
3. power supply as claimed in claim 2, is characterized in that, when described comparison module is comparer:
The first input end of described comparer and a reference voltage model calling, the described threshold voltage that the voltage on described first input end provides for described reference voltage module;
Second input end of described comparer is connected with a power supply normal input signal output module, the current voltage value of the described power supply normal input signal that the voltage on described second input end provides for described power supply normal input signal output module;
Wherein, when the current voltage value of described power supply normal input signal is greater than described threshold voltage, the output terminal of described comparer exports the first signal;
When the current voltage value of described power supply normal input signal is less than or equal to described threshold voltage, the output terminal of described comparer exports secondary signal.
4. power supply as claimed in claim 3, is characterized in that, when described processing module is triode:
The base stage of described triode is connected with the output terminal of described comparer, receives described first signal or described secondary signal;
The collector of described triode is connected with described first load;
The emitter of described triode is connected to ground;
Wherein, when the base stage of described triode receives described first signal, described triode is in conducting state, controls the first path conducting, and described first path is the path that the output terminal of described power supply is connected to ground by the first load;
When the base stage of described triode receives described secondary signal, described triode is in cut-off state, controls described first path open circuit.
5. power supply as claimed in claim 4, it is characterized in that, described reference voltage module specifically comprises:
First resistance, is connected with the output terminal of described power supply;
Second resistance, is connected with described first resistance, described first input end and ground;
First electric capacity, is connected in parallel on the two ends of described second resistance.
6. the power supply as described in claim arbitrary in claim 3-5, is characterized in that, described power supply normal input signal output module specifically comprises:
Power supply normal input signal input end, provides the magnitude of voltage of power supply normal input signal;
Filtration module, be connected with described power supply normal input signal input end, receive the magnitude of voltage of described power supply normal input signal, described filtration module comprises:
3rd resistance, is connected with described power supply normal input signal input end and described second input end;
Second electric capacity, is connected with described 3rd resistance and ground.
7. the power supply as described in claim arbitrary in claim 4-6, is characterized in that, described power supply also comprises:
Biasing module, is connected with the output terminal of described comparer and the base stage of described triode;
Described biasing module comprises:
4th resistance, is connected with the output terminal of described comparer and the base stage of described triode;
5th resistance, is connected with described 4th resistance and ground.
8. the power supply as described in claim arbitrary in claim 4-7, is characterized in that, described power supply also comprises:
Hysteresis module, is connected with the collector of described reference voltage module, described first load and described triode;
Described hysteresis module comprises:
6th resistance, is connected with described first resistance, described second resistance and described first input end;
Diode, the positive pole of described diode is connected with described 6th resistance, and the negative pole of described diode is connected with the collector of described first load and described triode.
9. an electronic equipment, comprising:
One circuit board;
Power supply, described power supply is the power supply described in claim arbitrary in claim 2-8, and described power supply is used for powering to described circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410412606.6A CN105353816A (en) | 2014-08-20 | 2014-08-20 | Method for stabilizing power supply, power supply and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410412606.6A CN105353816A (en) | 2014-08-20 | 2014-08-20 | Method for stabilizing power supply, power supply and electronic device |
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| Publication Number | Publication Date |
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| CN105353816A true CN105353816A (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410412606.6A Pending CN105353816A (en) | 2014-08-20 | 2014-08-20 | Method for stabilizing power supply, power supply and electronic device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11915654B1 (en) | 2022-08-26 | 2024-02-27 | HKC Corporation Limited | Power-supply voltage generator for outputting varied voltages to display panel |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63177212A (en) * | 1987-01-19 | 1988-07-21 | Fujitsu Ltd | Power supply stabilizing circuit |
| US20010015637A1 (en) * | 2000-02-21 | 2001-08-23 | Alps Electric Co., Ltd. | Power supply circuit in which ripple reducing ability is maintained even when power supply voltage drops |
| CN101414193A (en) * | 2007-10-16 | 2009-04-22 | 鸿富锦精密工业（深圳）有限公司 | Power supply automatic switchover circuit |
| CN202190212U (en) * | 2011-09-09 | 2012-04-11 | 青岛海信电器股份有限公司 | Overvoltage control circuit, low-power-consumption power circuit and television |
| CN203167360U (en) * | 2013-03-22 | 2013-08-28 | 杭州鸿德照明科技有限公司 | High efficiency environmental protection LED high voltage linear constant current driving circuit |
| CN203287806U (en) * | 2013-01-23 | 2013-11-13 | 浙江工业大学 | Mixed type regulated power supply |
| CN203398820U (en) * | 2013-07-03 | 2014-01-15 | 郑州众智科技股份有限公司 | Charger and undervoltage protection circuit thereof |
| CN203491976U (en) * | 2013-10-22 | 2014-03-19 | 成都芮腾科技有限公司 | Filter and amplification circuit for human body electronic scale |
| CN103884445A (en) * | 2014-03-06 | 2014-06-25 | 深圳市汇川技术股份有限公司 | Circuit for detecting temperature of power module of driver |
| CN203715012U (en) * | 2014-01-27 | 2014-07-16 | 杭州日鼎控制技术有限公司 | Input protection circuit of door motor driver |
-
2014
- 2014-08-20 CN CN201410412606.6A patent/CN105353816A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63177212A (en) * | 1987-01-19 | 1988-07-21 | Fujitsu Ltd | Power supply stabilizing circuit |
| US20010015637A1 (en) * | 2000-02-21 | 2001-08-23 | Alps Electric Co., Ltd. | Power supply circuit in which ripple reducing ability is maintained even when power supply voltage drops |
| CN101414193A (en) * | 2007-10-16 | 2009-04-22 | 鸿富锦精密工业（深圳）有限公司 | Power supply automatic switchover circuit |
| CN202190212U (en) * | 2011-09-09 | 2012-04-11 | 青岛海信电器股份有限公司 | Overvoltage control circuit, low-power-consumption power circuit and television |
| CN203287806U (en) * | 2013-01-23 | 2013-11-13 | 浙江工业大学 | Mixed type regulated power supply |
| CN203167360U (en) * | 2013-03-22 | 2013-08-28 | 杭州鸿德照明科技有限公司 | High efficiency environmental protection LED high voltage linear constant current driving circuit |
| CN203398820U (en) * | 2013-07-03 | 2014-01-15 | 郑州众智科技股份有限公司 | Charger and undervoltage protection circuit thereof |
| CN203491976U (en) * | 2013-10-22 | 2014-03-19 | 成都芮腾科技有限公司 | Filter and amplification circuit for human body electronic scale |
| CN203715012U (en) * | 2014-01-27 | 2014-07-16 | 杭州日鼎控制技术有限公司 | Input protection circuit of door motor driver |
| CN103884445A (en) * | 2014-03-06 | 2014-06-25 | 深圳市汇川技术股份有限公司 | Circuit for detecting temperature of power module of driver |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11915654B1 (en) | 2022-08-26 | 2024-02-27 | HKC Corporation Limited | Power-supply voltage generator for outputting varied voltages to display panel |
| WO2024040833A1 (en) * | 2022-08-26 | 2024-02-29 | 惠科股份有限公司 | Driving circuit of display panel, and display apparatus |
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Application publication date: 20160224 |