CN104199500B - High voltage generating circuit and method, power source control circuit and electronic system - Google Patents
High voltage generating circuit and method, power source control circuit and electronic system Download PDFInfo
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- CN104199500B CN104199500B CN201410373678.4A CN201410373678A CN104199500B CN 104199500 B CN104199500 B CN 104199500B CN 201410373678 A CN201410373678 A CN 201410373678A CN 104199500 B CN104199500 B CN 104199500B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is DC
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
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Abstract
The invention provides a high voltage generating circuit and method, a power source control circuit and an electronic system. The high voltage generating circuit is applied to the electronic system, and comprises a shaping chip, a boosted circuit and a voltage comparison circuit. Every two of the shaping chip, the boosted circuit and the voltage comparison circuit are connected. The shaping chip converts clock signals into pulse signals and outputs the pulse signals to the boosted circuit, pulse signal output is stopped according to a first control signal output by the voltage comparison circuit, and the pulse signals are output according to a second control signal. The boosted circuit is connected with a power source of the electronic system, and a voltage higher than the power source of the electronic system is output according to output pulses. The voltage comparison circuit compares the currently-output voltage with a preset threshold value, the first control signal is output if the currently-output voltage is larger than the preset threshold value, and the second control signal is output to the shaping chip if the currently-output voltage is equal to the preset threshold value. According to the high voltage generating circuit, an N-MOS can be used in the power source segmentation process, and the circuit is simple in structure and low in cost.
Description
Technical field
The present invention relates to voltage conversion field is and in particular to a kind of high voltage generating circuit, method, power supply
Control circuit and electronic system.
Background technology
Contemporary electronic systems are usually used the power supply of different voltages, and the power supply of equal voltage is also required to sometimes
Different segmentations are done according to the requirement of sequential or electricity consumption module and forms rear end power supply.Power supply segmentation is the most frequently used
Be exactly to use metal-oxide-semiconductor, due to characteristic N-MOS the leading with respect to P-MOS of manufacture craft itself
Energising resistance is much smaller.But it is higher than by N-MOS voltage because N-MOS conducting needs one
High potential exist, as long as P-MOS turn-on condition is to meet grid and be less than the voltage that passes through just can lead
Logical, and in electronic system, the current potential more much higher than power supply does not exist, so can only in the case of most
P-MOS is selected to carry out power supply segmentation.But when carrying out power supply segmentation using P-MOS, due to P-MOS
Conducting resistance power consumption big, the pressure drop of formation usually can affect the deficiency of rear end power supply.
Content of the invention
The invention provides a kind of high voltage generating circuit, method, power control circuit and electronic system
There is not the current potential more much higher than power supply it is impossible to carry out the technical problem of power supply segmentation using N-MOS.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that：
According to an aspect of the invention, it is provided a kind of high voltage generating circuit, this high voltage occurs electric
Road is applied in electronic system, and this high voltage generating circuit includes：
Shaping chip is connected respectively with booster circuit and voltage comparator circuit, voltage comparator circuit with rise piezoelectricity
Road connects；
Shaping chip is also connected with the clock signal output terminal of electronic system, and clock signal is converted to pulse
Signal, exports booster circuit, and stops output according to the first control signal of voltage comparator circuit output
Pulse signal, and the second control signal output pulse signal according to voltage comparator circuit output；
Booster circuit is also connected with the power supply of electronic system, is controlled according to the rectangular pulse of shaping chip output
One voltage higher than electronic system supply voltage of output；
Voltage comparator circuit, the voltage of current for booster circuit output is compared with pre-set threshold value, if working as
The front voltage exporting then exports the first control signal to shaping chip more than pre-set threshold value, if current output
Voltage then exports the second control signal to shaping chip equal to pre-set threshold value.
Alternatively, booster circuit includes:First electric capacity, the second electric capacity, the first diode, the two or two pole
Pipe and voltage output pin；
Voltage comparator circuit includes：Comparator, the first divider resistance, the second divider resistance, the 3rd partial pressure
Resistance and the 4th divider resistance；
One end of first electric capacity is connected with the output end of shaping chip；
The other end of the first electric capacity is connected with the negative pole of the first diode and the positive pole of the second diode respectively
Connect；
The positive pole of the first diode is connected with the power supply of electronic system；
One end of second electric capacity is connected with the negative pole of the second diode and voltage output pin respectively；
The other end ground connection of the second electric capacity；
One end of first divider resistance is connected with the power supply of electronic system, the other end respectively with comparator
One end of one input and the second divider resistance connects；
The other end ground connection of the second divider resistance；
One end of 3rd divider resistance is connected with voltage output pin；
The other end of the 3rd divider resistance is defeated with the second of one end of the 4th divider resistance and comparator respectively
Enter end to connect；
The other end ground connection of the 4th divider resistance；
The output end of comparator is connected with the sense terminal of shaping chip.
Alternatively, booster circuit also includes：Current-limiting resistance；
One end of current-limiting resistance is connected with the power supply of electronic system, and the positive pole of the other end and the first diode is even
Connect.
Alternatively, if the first input end of the first divider resistance and detecting voltage chip and the second divider resistance
One end connect tie point be A point, if one end with the 4th divider resistance of the 3rd divider resistance and
The tie point that second input of detecting voltage chip connects is B point；
The supply voltage of electronic system, the voltage of output pin and the first divider resistance, the second partial pressure electricity
Resistance, between the 3rd divider resistance, the resistance of the 4th divider resistance meet：
The voltage of A point is equal to the voltage of B point.
According to another aspect of the present invention, there is provided a kind of power control circuit, this power control circuit
It is applied in electronic system, this power control circuit includes：N-MOS pipe and one aspect of the invention provide
High voltage generating circuit；
The output voltage pin of high voltage generating circuit is connected with the grid of N-MOS pipe；
The source electrode of N-MOS pipe is connected with the rear end power supply of electronic system；
The drain electrode of N-MOS pipe is connected with the power supply of electronic system.
According to a further aspect of the invention, there is provided a kind of electronic system, this electronic system includes this
The power control circuit that bright other side provides.
According to a further aspect of the invention, there is provided a kind of high voltage method for generation, the method includes：
Receive the clock signal of electronic system and clock signal is converted to pulse signal and exports；
According to one voltage higher than the supply voltage of electronic system of output of pulse signal；
Judge whether the voltage of current output is more than pre-set threshold value, be then, stop output pulse signal.
This high voltage generating circuit of the present invention, can by the electronegative potential of system power supply boost to one high
Current potential output so that carry out power supply segmentation when using N-MOS become possibility, in addition, with existing skill
The high voltage generating circuit structure that art compares the present invention is simple, low cost；And save space can allow electricity
It is little as far as possible that subsystem makes.
Brief description
Fig. 1 is a kind of block diagram of high voltage generating circuit of one embodiment of the invention；
Fig. 2 is a kind of circuit diagram of high voltage generating circuit of one embodiment of the invention；
Fig. 3 is a kind of circuit diagram of high voltage generating circuit of one embodiment of the invention；
Fig. 4 is the circuit diagram of the power control circuit of one embodiment of the invention；
Fig. 5 is a kind of block diagram of electronic system of one embodiment of the invention；
Fig. 6 is a kind of flow chart of high voltage method for generation of one embodiment of the invention.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to this
Bright embodiment is described in further detail.
The core concept of the present invention is can not to be carried out power supply, be divided using N-MOS pipe for electronic system
The current condition cutting, using clock signal existing in electronic system, increases clock using activated amplifier
Energy, then passes through energy-storage travelling wave tube electric capacity and the diode with the unidirectional general character, low for system power supply electricity
Position formation high potential.This programme utilizes the existing clock sources of electronic system, the electronic devices and components of low cost
Formed high potential, low cost and save space can allow electronic system make little as far as possible.
Fig. 1 is a kind of block diagram of high voltage generating circuit of one embodiment of the invention；
Referring to Fig. 1, this high voltage generating circuit of the present invention is applied to electronic system, and this high voltage is sent out
Raw circuit 100 includes：Shaping chip 101, booster circuit 102 and voltage comparator circuit 103；Shaping core
Piece 101 is connected respectively with booster circuit 102 and voltage comparator circuit 103, voltage comparator circuit 103 with
Booster circuit 102 connects；
Shaping chip 101 is also connected with the clock signal output terminal of electronic system, and clock signal is converted to
Pulse signal, exports booster circuit 102；And the first control of the output according to voltage comparator circuit 103
Signal processed stops output pulse signal；
Booster circuit 102 is also connected with the power supply of electronic system, according to the pulse control of shaping chip 101 output
System one voltage higher than electronic system supply voltage of output；
Voltage comparator circuit 102, the voltage that booster circuit 102 is currently exported is compared with pre-set threshold value
Relatively, if exporting the first control signal to shaping chip 101 when the voltage currently exporting is more than pre-set threshold value,
If the voltage currently exporting exports the second control signal to shaping chip 101 when being equal to pre-set threshold value.
In the present embodiment, by using the existing clock signal of electronic system, at this clock signal
Reason output pulse signal, and one voltage higher than system power supply of output is controlled according to this pulse signal, reach
It is pressed into high voltage and exports to by LVPS liter existing in system.In addition setting voltage comparator circuit,
Whether the voltage of relatively more current output is more than a default threshold voltage, is judged whether by shaping chip
Stop output pulse signal, if the magnitude of voltage of i.e. current output is more than preset value, output first control
Signal, controls and stops output pulse signal, export the second control signal when magnitude of voltage drops to preset value
Recover output pulse signal to shaping chip, the high-voltage value of output maintained by preset voltage value with this,
This N-MOS pipe is connected with the pin of output HIGH voltage carry out power supply such so that Department of Electronics
System, when carrying out power supply segmentation, using the little N-MOS pipe of conduction loss, reduces power consumption penalty,
Reduce the impact to System Back-end power supply.
Fig. 2 is a kind of circuit diagram of high voltage generating circuit of one embodiment of the invention, referring to Fig. 2,
This circuit of the present invention includes:Shaping chip U1, the first electric capacity C1, the second electric capacity C2, the one or two
Pole pipe D1, the second diode D2, voltage output pin；And comparator U2, the first divider resistance
R1, the second divider resistance R2, the 3rd divider resistance R3 and the 4th divider resistance R4；
Shaping chip U1 is connected with the clock signal output terminal (output end of U3) of electronic system, will be little
Signal clock is converted to rectangular pulse signal output；
One end of first electric capacity C1 is connected with the output end of shaping chip U1；First electric capacity C1's is another
End is connected with the negative pole of the first diode D1 and the positive pole of the second diode D2 respectively；
The positive pole of the first diode D1 is connected with the power supply of electronic system；
One end of second electric capacity C2 is connected with the negative pole of the second diode D2 and voltage output pin respectively
Connect；The other end ground connection of the second electric capacity C2；
One end of first divider resistance R1 is connected with the power supply of electronic system, the other end respectively with comparator
One end of the first input end of U2 and the second divider resistance R2 connects；
The other end ground connection of the second divider resistance R2；One end of 3rd divider resistance R3 is drawn with voltage output
Pin connects；
The other end of the 3rd divider resistance R3 one end and the comparator with the 4th divider resistance R4 respectively
Second input of U2 connects；
The other end ground connection of the 4th divider resistance R4；The output end of comparator U2 is with shaping chip U1's
Sense terminal connects.
Referring to Fig. 2, U1 is a shaping circuit chip based on activated amplifier in the present embodiment, energy
Enough small-signal sinusoidal clock is converted to pulse signal, the detecting pin (the detect end in Fig. 2) of U1 is detectd
Measuring high level can stop pulse output.
U2 is a detecting voltage chip based on comparator, defeated more than first when detecting the second input
Enter and high level when holding, can be exported, the sense terminal of U1 stops output pulse according to this high level signal；U3 is
The existing chip of electronic system can produce clock signal and export U1.
First resistor R1 and second resistance R2 are the divider of system power supply；3rd resistor R3 and the 4th resistance
R4 is the divider of the high potential of output voltage pin output.
In the circuit of the present embodiment, using the first electric capacity C1 energy storage, using the second electric capacity C2 carry out energy storage and
Filtering.D1, D2 are the diodes of one-way conduction, play afterflow effect, the first diode D1 and second
Tie point between diode D2 is energy storage node.For convenience, system power supply is defined as V1,
The default output high potential of output voltage pin is defined as V2.This high voltage generating circuit of the present invention
Specific work process be：
The clock signal of electronic system existing chip U3 output is formed after shaping chip U2 conversion
Rectangular pulse；
When pulse is in electronegative potential, the instantaneous conducting effect energy storage node due to C1 is also at electronegative potential,
Simultaneously because the unidirectional general character of the first diode D1, system power supply V1 flows to energy storage node by D1.
When pulse is in high potential, the second diode D2 conducting, the electric energy of energy storage node passes through the two or two
Pole pipe D2 flows to the second electric capacity C2.So the height pulse with output constantly switches the second electric capacity C2 meeting
Constantly storage electric energy, thus produce high potential V2 in output voltage pin.System power supply V1 is converted into
The voltage V2 higher than system power supply V1 is simultaneously exported by output voltage pin.
In addition, it is electric with the first input end of detecting voltage chip and the second partial pressure to set the first divider resistance R1
The tie point that one end of resistance R2 connects is A point, if the 3rd divider resistance R3 and the 4th divider resistance R4
One end and detecting voltage chip second input connect tie point be B point；The electricity of electronic system
Source voltage, the voltage of output pin and the first divider resistance, the second divider resistance, the 3rd divider resistance,
Meet between the resistance of the 4th divider resistance：The voltage V1*R2/ (R1+R2) of A point is equal to B point
Voltage V2*R4/ (R3+R4) is equal after V1, V2 partial pressure to ensure.
Referring to Fig. 2, B point accesses second input of detecting voltage chip U2, A through output voltage feedback line
Point accesses the first input end of detecting voltage chip U2, if currently output high potential is more than V2, U2's
The voltage of the second input also can be more than the voltage of first input end, and now, U2 can export high level；U1
Sense terminal (detect pin) detect after high level can stop pulse output, if current export high electricity
When pancake is to default threshold values V2, the first input end of U2 is equal with the second input, and U2 exports one
Low level, then U1 low level is detected according to sense terminal and then continues to output pulse signal, thus output
The magnitude of voltage of voltage pin maintains preset voltage value V2.
Fig. 3 is a kind of circuit diagram of high voltage generating circuit of one embodiment of the invention, referring to Fig. 3, this
Circuit structure in embodiment is with the difference of Fig. 2, and this high voltage generating circuit also includes a current limliting
Resistance R5；One end of current-limiting resistance R5 is connected with the power supply of electronic system, the other end and the first diode
The positive pole of D1 connects, with protection circuit.
The course of work of circuit shown in Fig. 3 is similar with the course of work of the circuit of Fig. 2, therefore, circuit in Fig. 3
Principle and working method may refer to the respective description of aforementioned Fig. 2 part, here is omitted.
In one embodiment of the invention, when high voltage generating circuit can utilize electronic system existing
Clock signal, low-voltage system Power convert is that a high voltage exports so that electronic system can use
Conducting resistance less N-MOS pipe carries out power supply segmentation and control, and this high voltage of the present invention occurs electricity
Line structure is simple, and the space occupying electronic system is less；And realized using the electronic devices and components of low cost
The function of output HIGH voltage, cost is relatively low.
In addition, present invention also offers a kind of power control circuit, this power control circuit includes：N-MOS
Pipe and above-mentioned high voltage generating circuit；
In one embodiment of the invention, the output voltage pin of high voltage generating circuit and N-MOS
The grid of pipe connects；The source electrode of N-MOS pipe is connected with the rear end power supply of electronic system；N-MOS pipe
Drain electrode is connected with the power supply of electronic system.
Fig. 4 is the circuit diagram of the power control circuit of one embodiment of the invention, with reference to Fig. 4 to this
Bright this power control circuit is specifically described.
Fig. 4 is that the circuit structure in aforementioned Fig. 2 or Fig. 3 is applied in the power supply segmentation of electronic system
A kind of mode.Power supply segmentation can be understood as：One power supply is wanted according to sequential or electricity consumption module
Ask and do different segmentations, for example, two electricity consumption modules are used in conjunction with the power supply of a 3.3V, and this two
There is the difference in sequential in electricity consumption module, now by N-MOS pipe as one electricity consumption mould of switch control rule
Block first using the power supply of this 3.3V, using the power supply of this 3.3V after another electricity consumption module, can be regarded as
The power supply of this 3.3V is split.Wherein, the power supply of this 3.3V using afterwards exists with respect to sequential
The power supply of the 3.3V first using is referred to as rear end power supply.
Referring to Fig. 4, the circuit in Fig. 2 or Fig. 3 is applied in electronic system, using N-MOS
The power supply process that pipe is split to the power supply of electronic system is：
The high voltage generating circuit output voltage pin output high voltage V2 higher than system power supply V1,
The grid of N-MOS meets described output high potential V2, when the grid voltage of N-MOS pipe is more than source electrode electricity
During pressure, N-MOS turns on, and has electric current to flow through between source electrode and drain electrode.Produced by high voltage generating circuit
High potential and N-MOS control the shutoff of rear end power supply, required with matching timing, meet different using
Electric module use demand.
This power control circuit of the present invention is the generation one of the high voltage generating circuit providing in the present invention
On the basis of the individual default high potential higher than system power supply, using less than P-MOS pipe conducting resistance
N-MOS pipe is split to power supply and is controlled, small power consumption, does not affect the use of rear end power supply.
Present invention also offers a kind of electronic system, Fig. 5 is a kind of Department of Electronics of one embodiment of the invention
The block diagram of system, this electronic system 500 includes the power control circuit shown in Fig. 4, this electronic system due to
It is integrated with power control circuit, the power consumption carrying out during power supply segmentation is few, and can allow electronic system
Make is little as far as possible, thus saving space.
Invention further provides a kind of high voltage method for generation, Fig. 6 is one kind of one embodiment of the invention
The flow chart of high voltage method for generation；Referring to Fig. 6, this high voltage method for generation includes：
Step S610, receives the clock signal of electronic system and clock signal is converted to pulse signal；
The method is applied to electronic system, using the existing clock signal of electronic system, receives clock signal
And the sinusoidal clock of small-signal is amplified and Shape correction, export rectangular pulse.
Step S620, according to one voltage higher than the supply voltage of electronic system of output of pulse signal；
According to the height of pulse signal, control one voltage higher than the power supply of electronic system of output, after supplying
Continuous circuit uses.
Step S630, judges whether the voltage of current output is more than pre-set threshold value, is then, stops output arteries and veins
Rush signal.
Judgement is compared to the voltage of current circuit output, if more than pre-set threshold value, this pre-set threshold value
It is a high-potential voltage value higher than system power supply.If the voltage of current output is more than default valve
During value, stop output pulse signal, when waiting magnitude of voltage to drop to pre-set threshold value, be further continued for exporting pulse
Signal, output voltage is maintained pre-set threshold value.
This high voltage method for generation of the present invention is corresponding with aforesaid high voltage generating circuit, should
High voltage method for generation implement the respective description referring to aforementioned high voltage generating circuit part for the step,
Will not be described here.
In sum, this high voltage generating circuit of the present invention can be by the electronic system power supply of low-voltage
It is converted into high voltage and exports, achieve the purpose of boosting using cheap electronic component, this circuit
Structure is simple, thus cost is little.And this high voltage generating circuit saves space so that electronic system
Can make is very little.
A kind of power supply electricity is proposed on the basis of this high voltage generating circuit that the present invention provides
Road, this power control circuit is split to the power supply of electronic system using the little N-MOS pipe of conducting resistance
And control, power consumption is few, and rear end power supply will not be adversely affected.
Present invention also offers a kind of electronic system using above-mentioned power control circuit, this electronic system energy
Enough using N-MOS pipe, power supply is controlled and splits, need not be big using conducting resistance, power consumption is big
P-MOS manages, and has the advantages that small power consumption.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the protection model of the present invention
Enclose.All any modification, equivalent substitution and improvement made within the spirit and principles in the present invention etc., all
Comprise within the scope of the present invention.
Claims (10)
1. a kind of high voltage generating circuit, this high voltage generating circuit is applied in electronic system, its feature
It is, described high voltage generating circuit includes:Shaping chip, booster circuit and voltage comparator circuit；Institute
State shaping chip to be connected respectively with described booster circuit and voltage comparator circuit, described voltage comparator circuit with
Described booster circuit connects；Described shaping chip is a shaping chip based on activated amplifier；
Described shaping chip is also connected with the clock signal output terminal of described electronic system, and described clock is believed
Number be converted to pulse signal, export booster circuit, and first according to the output of described voltage comparator circuit
Control signal stops output pulse signal, and the second control letter according to the output of described voltage comparator circuit
Number output pulse signal；
Described booster circuit is also connected with the power supply of described electronic system, according to the output of described shaping chip
Pulse Width Control exports a voltage higher than described electronic system supply voltage；
Described voltage comparator circuit, the voltage of current for described booster circuit output is compared with pre-set threshold value
Relatively, if the voltage currently exporting is more than pre-set threshold value, export the first control signal to described shaping chip,
If the voltage currently exporting is equal to pre-set threshold value, export the second control signal to described shaping chip.
2. high voltage generating circuit according to claim 1 it is characterised in that
Described booster circuit includes:First electric capacity, the second electric capacity, the first diode, the second diode with
And voltage output pin；
Described voltage comparator circuit includes：Comparator, the first divider resistance, the second divider resistance, the 3rd
Divider resistance and the 4th divider resistance；
One end of described first electric capacity is connected with the output end of described shaping chip；
The other end of described first electric capacity negative pole and described two or two pole with described first diode respectively
The positive pole of pipe connects；
The positive pole of described first diode is connected with the power supply of described electronic system；
One end of described second electric capacity is drawn with the negative pole of described second diode and described voltage output respectively
Pin connects；
The other end ground connection of described second electric capacity；
One end of described first divider resistance is connected with the power supply of described electronic system, the other end respectively with institute
One end of the first input end and described second divider resistance of stating comparator connects；
The other end ground connection of described second divider resistance；
One end of described 3rd divider resistance is connected with described voltage output pin；
The other end of described 3rd divider resistance one end and the described ratio with described 4th divider resistance respectively
Connect compared with the second input of device；
The other end ground connection of described 4th divider resistance；
The output end of described comparator is connected with the sense terminal of described shaping chip.
3. high voltage generating circuit according to claim 2 is it is characterised in that described booster circuit
Also include：Current-limiting resistance；
One end of described current-limiting resistance is connected with the power supply of described electronic system, the other end and the described 1st
The positive pole of pole pipe connects.
4. high voltage generating circuit according to claim 2 is it is characterised in that set described first point
Piezoresistance is connected with the first input end of described detecting voltage chip and one end of described second divider resistance
Tie point is A point, if one end with described 4th divider resistance of described 3rd divider resistance and described
The tie point that second input of detecting voltage chip connects is B point；
The supply voltage of described electronic system, the voltage of described output pin and described first divider resistance,
Meet between second divider resistance, the 3rd divider resistance, the resistance of the 4th divider resistance：
The voltage of described A point is equal to the voltage of B point.
5. a kind of power control circuit, this power control circuit be applied in electronic system it is characterised in that
Described power control circuit includes：N-MOS pipe and the high voltage any one of Claims 1-4
There is circuit；
The output voltage pin of described high voltage generating circuit is connected with the grid of described N-MOS pipe；
The source electrode of described N-MOS pipe is connected with the rear end power supply of described electronic system；
The drain electrode of described N-MOS pipe is connected with the power supply of described electronic system.
6. a kind of electronic system is it is characterised in that described electronic system includes the electricity described in claim 5
Source control circuit.
7. a kind of high voltage method for generation is it is characterised in that methods described includes：
Receive the clock signal of electronic system and described clock signal is converted to pulse signal and exports；
According to described one voltage higher than the supply voltage of described electronic system of output of pulse signal；
Judge whether the voltage of current output is more than pre-set threshold value, be then, stop output pulse signal.
8. method according to claim 7 is it is characterised in that the clock of described reception electronic system
Signal and by described clock signal be converted to pulse signal and export including：
Shaping chip is set in circuit, by the input of described shaping chip and described electronic system when
The output end of clock signal connects, and the clock signal of reception is converted to pulse signal and exports；
Described according to described one voltage bag higher than the supply voltage of described electronic system of output of pulse signal
Include：
First electric capacity, the second electric capacity, the first diode, the second diode and voltage are set in circuit
Output pin；
The positive pole of described first diode is connected with the power supply of described electronic system；
One end of described first electric capacity is connected with the output end of described shaping chip；
By the other end of the described first electric capacity negative pole and the described 2nd 2 with described first diode respectively
The positive pole of pole pipe connects；
By one end of described second electric capacity negative pole and described voltage output with described second diode respectively
Pin connects；
Other end ground connection by described second electric capacity；
Whether the described voltage judging current output is more than pre-set threshold value, is then, stops output pulse signal
Including：Setting comparator, the first divider resistance, the second divider resistance, the 3rd divider resistance in circuit
With the 4th divider resistance；
One end of described first divider resistance is connected with the power supply of described electronic system, the other end respectively with
One end of the first input end of described comparator and described second divider resistance connects；
Other end ground connection by described second divider resistance；
One end of described 3rd divider resistance is connected with described voltage output pin；
By the other end of described 3rd divider resistance respectively with one end of described 4th divider resistance and described
Second input of comparator connects；
Other end ground connection by described 4th divider resistance；
The output end of described comparator is connected with the sense terminal of described shaping chip；
When the output end that the sense terminal of described shaping chip detects described comparator is high level, stop
Output pulse signal.
9. method according to claim 8 is it is characterised in that described defeated according to described pulse signal
Go out a voltage higher than the supply voltage of described electronic system also to include：Setting current-limiting resistance；
One end of described current-limiting resistance is connected with the power supply of described electronic system, the other end and described first
The positive pole of diode connects.
10. method according to claim 8 it is characterised in that set described first divider resistance with
The tie point that one end of the first input end of described detecting voltage chip and described second divider resistance connects is
A point, if one end with described 4th divider resistance of described 3rd divider resistance and described detecting voltage
The tie point that second input of chip connects is B point；
The supply voltage of described electronic system, the voltage of described output pin and described first divider resistance,
Meet between second divider resistance, the 3rd divider resistance, the resistance of the 4th divider resistance：
The voltage of described A point is equal to the voltage of B point.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410373678.4A CN104199500B (en) | 2014-07-31 | 2014-07-31 | High voltage generating circuit and method, power source control circuit and electronic system |
| CN201610808648.0A CN106371491B (en) | 2014-07-31 | 2014-07-31 | High voltage generating circuit, method, power control circuit and electronic system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410373678.4A CN104199500B (en) | 2014-07-31 | 2014-07-31 | High voltage generating circuit and method, power source control circuit and electronic system |
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| CN201610808648.0A Division CN106371491B (en) | 2014-07-31 | 2014-07-31 | High voltage generating circuit, method, power control circuit and electronic system |
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| CN104199500A CN104199500A (en) | 2014-12-10 |
| CN104199500B true CN104199500B (en) | 2017-02-08 |
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| CN201410373678.4A Active CN104199500B (en) | 2014-07-31 | 2014-07-31 | High voltage generating circuit and method, power source control circuit and electronic system |
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| CN110166027B (en) * | 2019-04-30 | 2023-07-04 | 华太极光光电技术有限公司 | High-voltage pulse signal generating device and method |
| SG10201913413YA (en) * | 2019-12-26 | 2021-07-29 | Zero2 5 Biotech Pte Ltd | System and device for air purification |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| IT1320718B1 (en) * | 2000-10-20 | 2003-12-10 | St Microelectronics Srl | CAPACITIVE HIGH VOLTAGE GENERATOR. |
| JP2003168293A (en) * | 2001-11-29 | 2003-06-13 | Matsushita Electric Ind Co Ltd | Semiconductor storage device and method of manufacturing the same |
| US7009857B2 (en) * | 2004-02-10 | 2006-03-07 | Aimtron Technology Corp. | Soft-start charge pump circuit |
| KR100632951B1 (en) * | 2004-09-22 | 2006-10-11 | 삼성전자주식회사 | High voltage generator circuit with ripple stabilization |
| JP2006325292A (en) * | 2005-05-17 | 2006-11-30 | Matsushita Electric Ind Co Ltd | Charge pump type booster circuit and antenna switch |
| US7710193B2 (en) * | 2005-09-29 | 2010-05-04 | Hynix Semiconductor, Inc. | High voltage generator and word line driving high voltage generator of memory device |
| KR100805839B1 (en) * | 2006-08-29 | 2008-02-21 | 삼성전자주식회사 | Flash memory device sharing high voltage generator |
| KR100816168B1 (en) * | 2006-09-29 | 2008-03-21 | 주식회사 하이닉스반도체 | High voltage generator of semiconductor device |
| CN103401544B (en) * | 2013-07-03 | 2016-05-25 | 西安电子科技大学 | For the drive circuit of charging management chip external high pressure NMOS pipe |
| CN103869855A (en) * | 2014-02-21 | 2014-06-18 | 广东博观科技有限公司 | Novel high-voltage generating circuit |
| CN204129554U (en) * | 2014-07-31 | 2015-01-28 | 青岛歌尔声学科技有限公司 | High voltage generating circuit, power control circuit and electronic system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106371491B (en) | 2017-12-22 |
| CN106371491A (en) | 2017-02-01 |
| CN104199500A (en) | 2014-12-10 |
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