CN103729045B - The electric power controller of touch-control system and method for managing power supply - Google Patents
The electric power controller of touch-control system and method for managing power supply Download PDFInfo
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- CN103729045B CN103729045B CN201210384331.0A CN201210384331A CN103729045B CN 103729045 B CN103729045 B CN 103729045B CN 201210384331 A CN201210384331 A CN 201210384331A CN 103729045 B CN103729045 B CN 103729045B
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Abstract
The invention relates to electric power controller and the management method of a kind of touch-control system, comprise booster circuit, circuit for detecting, adjustment circuit and load circuit.Booster circuit is according to input voltage, voltage stabilizing charge and discharge control signal and boosting charge and discharge control signal boost output voltage.Whether circuit for detecting detecting output voltage reaches predetermined value.Adjust circuit according to the detecting result of circuit for detecting, before output voltage reaches predetermined value and afterwards, adjust output voltage with boosting charge and discharge control signal and voltage stabilizing charge and discharge control signal respectively.Load circuit, according to the adjustment result of adjustment circuit, receives the output voltage arriving predetermined value.Wherein boosting charge and discharge control signal is faster than voltage stabilizing charge and discharge control signal to the adjustment of output voltage.
Description
Technical field
The present invention relates to a kind of electric power controller field, particularly relate to the touch-control system of a kind of fast reaction sleep pattern
The electric power controller of system and method for managing power supply.
Background technology
Contact panel (touch panel) combines display screen can become Touch Screen, and it is generally as electronic installation
Input interface, in order to detect the input of touching in viewing area, and when contact panel does not touch input on Touch Screen
Time, the supply power-off of Touch Screen can be entered sleep pattern (sleep mode) by usual user, so that avoid need not
The electrical source consumption wanted.
Refer to shown in Figure 1A, be the circuit diagram for existing touch-control system electric power controller 1.As it has been described above, work as
When the power-off of Touch Screen enters sleep pattern, there is no the input signals such as VDD, CK/CKB, also without output voltage Vout, negative
Carrying circuit also attonity, wherein VDD is logic high level voltage (or low-tension supply) of pulse wave/reverse pulse wave signal CK/CKB.
Refer to shown in Figure 1B, be the working state figure for existing touch-control system electric power controller 1.When user makes
Contact panel by sleep pattern recover to mode of operation time, although load circuit must reach running voltage VDDH can action,
But from the circuit diagram of Figure 1A, owing to load circuit is electrically connected at the outfan 11t of booster circuit 11, therefore load circuit
Still can consume certain output electric current Io, that is have more the consumption of load current ILoad.For output voltage Vout, logical
Often having and utilize an external capacitor Cext charging, the running voltage as load circuit works is originated.In other words, touch-control is worked as
When system is recovered to mode of operation by sleep pattern, start to charge for external capacitor Cext, but owing to output electric current Io is the completeest
Full external capacitor Cext is charged (charging current Ic), but load circuit also consumes the output electric current (electricity of consumption of part
Stream is load current ILoad) so that be intended to charging external electric capacity Cext to reach the running voltage that load circuit can work
VDDH will take for the more charging interval, and the working state figure of its charging as shown by curve 1, is with a voltage stabilizing charge and discharge control letter
Number external capacitive Cext is charged.
In sum, for the load circuit of touch-control system, it must reach a fixing operational voltage value
VDDH can recover to mode of operation normally to work, but, touch-control system now is in design only for receiving touching
During input, just external capacitor Cext is charged the action to running voltage VDDH with a voltage stabilizing charge and discharge control signal, though
So the time of charging can be solely several microsecond, but owing to the charging rate of voltage stabilizing charge and discharge control signal is the slowest, thus may
User is made to feel blunt on using or postpone.
Therefore, be badly in need of proposing a kind of can the electric power controller of fast reaction touch-control system sleep pattern, allow the user can
More fast and convenient use electronic system.
Because the defect that above-mentioned existing touch-control system electric power controller exists, the present inventor produces based on being engaged in this type of
Product manufacture and design for many years abundant practical experience and Professional knowledge, the most in addition research and innovation, to founding a kind of new structure
The electric power controller of touch-control system and method for managing power supply can improve general existing touch-control system electric power controller,
It is made to have more practicality.Through constantly research, design, and after repeatedly studying sample and improving, finally create really
The present invention having practical value.
Summary of the invention
It is an object of the invention to, overcome the defect that existing touch-control system electric power controller exists, and provide a kind of
The electric power controller of the touch-control system of new structure and method for managing power supply, to be solved technical problem is that makes it can be by
Adjustment circuit is before the output voltage that booster circuit exports reaches predetermined value, that is reaches the work electricity that load circuit can work
Before pressure, to be faster than the output electricity of the boosting charge and discharge control signal adjustment booster circuit output of voltage stabilizing charge and discharge control signal
Pressure, makes output voltage can rapidly reach voltage predetermined value, in order to touch-control system recovers to mode of operation from sleep pattern
Time, its response time can be greatly reduced, user more rapid can advantageously use such as mobile phone, computer or have touch-control
The electronic system of screen etc..Additionally, after the output voltage of booster circuit output reaches predetermined value, automatically controlled with voltage stabilizing charge and discharge
Signal processed adjusts the output voltage of booster circuit output, makes the rising of output voltage stabilization, it is to avoid the consumption of power supply transition and
Avoid burning circuit unit (transistor) and effectively saving power supply, effectively manage power supply further up to electric power controller
Effect.
The object of the invention to solve the technical problems realizes by the following technical solutions.Propose according to the present invention
The electric power controller of a kind of touch-control system, wherein booster circuit, according to input voltage, voltage stabilizing charge and discharge control signal and liter
Pressure charge and discharge control signal boost output voltage；Circuit for detecting, detects whether this output voltage reaches predetermined value；Adjust circuit,
Detecting result according to this circuit for detecting, before this output voltage reaches this predetermined value and afterwards, respectively with this boosting charge and discharge
Electric control signal and this voltage stabilizing charge and discharge control signal adjust this output voltage；Wherein this boosting charge and discharge control signal is to this
The adjustment of output voltage is faster than this voltage stabilizing charge and discharge control signal；And load circuit, according to the adjustment result of this adjustment circuit,
Receive this output voltage arriving this predetermined value.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid wherein further include mu balanced circuit, in order to reduce the amplitude of the produced ripple of this output voltage.
Aforesaid electric power controller, wherein this mu balanced circuit is for storage capacitors.
Aforesaid electric power controller, wherein further includes switch, is the front disconnection reaching this predetermined value in this output voltage,
This booster circuit and the electric connection of this load circuit.
Aforesaid electric power controller, wherein this switch is after this output voltage reaches this predetermined value, is electrically connected with
This booster circuit, to receive this output voltage of this booster circuit to this load circuit.
Aforesaid electric power controller, wherein the frequency of this boosting charge and discharge control signal is higher than this voltage stabilizing charge and discharge control
The frequency of signal.
Aforesaid electric power controller, wherein this boosting charge and discharge control signal is based on this voltage stabilizing charge and discharge control signal
Being produced with pulse pressure charge and discharge control signal combination, wherein the frequency of this pulse pressure charge and discharge control signal is higher than this voltage stabilizing discharge and recharge
Control signal.
Aforesaid electric power controller, wherein this voltage stabilizing charge and discharge control signal and this pulse pressure charge and discharge control signal be with
Logic sum gate combines.
Aforesaid electric power controller, wherein this booster circuit includes electric charge pump.
Aforesaid electric power controller, wherein this electric charge pump comprises Dick's gloomy electric charge pump.
Aforesaid electric power controller, wherein this circuit for detecting is for comparator.
Aforesaid electric power controller, wherein this load circuit is for drive signal generation circuit.
Aforesaid electric power controller, wherein this touch-control system is for mobile phone, computer or the electricity with Touch Screen
Subsystem.
Aforesaid electric power controller, wherein this predetermined value of this output voltage is the reference voltage for this touch-control system.
Aforesaid electric power controller, the predetermined frequency of this touch-control system according to wherein this predetermined value of this output voltage is
Rate produces.
Aforesaid electric power controller, wherein this booster circuit comprises the most several transistor, and these the most several transistors its
One of be electrically connected with this storage capacitors.
Aforesaid electric power controller, wherein this predetermined value of this output voltage is between being electrically connected with this storage capacitors
The breakdown voltage of this transistor, and between the running voltage of this touch-control system.
The object of the invention to solve the technical problems realizes the most by the following technical solutions.Propose according to the present invention
A kind of method for managing power supply of touch-control system, comprising: according to input voltage, voltage stabilizing charge and discharge control signal and boosting charge and discharge
Electric control signal promotes the output voltage of booster circuit；Detect whether this output voltage reaches predetermined value at this by circuit for detecting
Output voltage reaches before this predetermined value with afterwards, is adjusted by circuit respectively with this boosting charge and discharge control signal and this voltage stabilizing
Charge and discharge control signal adjusts this output voltage, and wherein this boosting charge and discharge control signal is faster than this to the lifting of this output voltage
Voltage stabilizing charge and discharge control signal；And this output voltage of this predetermined value of arrival is received by load circuit.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid method for managing power supply, wherein further includes and reduces shaking of the produced ripple of this output voltage by mu balanced circuit
Width.
Aforesaid method for managing power supply, wherein said method for managing power supply, this mu balanced circuit is for storage capacitors.
Aforesaid method for managing power supply, wherein further includes by switch, disconnected before this output voltage reaches this predetermined value
Open the electric connection of this booster circuit and this load circuit.
Aforesaid method for managing power supply, wherein this switch is after this output voltage reaches this predetermined value, is electrically connected with
This booster circuit, to receive this output voltage of this booster circuit to this load circuit.
Aforesaid method for managing power supply, wherein the frequency of this boosting charge and discharge control signal is higher than this voltage stabilizing charge and discharge control
The frequency of signal.
Aforesaid method for managing power supply, wherein this boosting charge and discharge control signal is based on this voltage stabilizing charge and discharge control signal
Being produced with pulse pressure charge and discharge control signal combination, wherein the frequency of this pulse pressure charge and discharge control signal is higher than this voltage stabilizing discharge and recharge
Control signal.
Aforesaid method for managing power supply, wherein this voltage stabilizing charge and discharge control signal and this pulse pressure charge and discharge control signal be with
Logic sum gate combines.
Aforesaid method for managing power supply, wherein this booster circuit includes electric charge pump.
Aforesaid method for managing power supply, wherein this electric charge pump comprises Dick's gloomy electric charge pump.
The present invention compared with prior art has clear advantage and beneficial effect.By technique scheme, the present invention
The electric power controller of touch-control system and method for managing power supply can reach suitable technological progress and practicality, and have industry
On extensive value, its electric power controller at least having the advantage that touch-control system of the present invention and power management side
Method can be adjusted by circuit before the output voltage that booster circuit exports reaches predetermined value, that is reach load circuit and can work
Running voltage before, be faster than voltage stabilizing charge and discharge control signal boosting charge and discharge control signal adjust booster circuit output
Output voltage, makes output voltage can rapidly reach voltage predetermined value, in order to touch-control system recovers to work from sleep pattern
During operation mode, its response time can be greatly reduced, and user can more rapid advantageously use such as mobile phone, computer or
Person has the electronic system of Touch Screen etc..Additionally, after the output voltage of booster circuit output reaches predetermined value, with surely
Pressure charge and discharge control signal adjusts the output voltage of booster circuit output, makes the rising of output voltage stabilization, it is to avoid power supply transition
Consumption and avoid burning circuit unit (transistor) and effectively saving power supply, effective further up to electric power controller
Effect of ground management power supply.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of description, and in order to allow above and other objects of the present invention, the feature and advantage can
Become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Accompanying drawing explanation
Figure 1A is the circuit diagram of existing touch-control system power management；
Figure 1B is the working state figure for existing touch-control system power management；
Fig. 2 A is the circuit diagram for touch-control system electric power controller of the present invention；
Fig. 2 B is the working state figure for touch-control system electric power controller of the present invention；
Fig. 3 A is the schematic diagram utilizing for touch-control system electric power controller of the present invention and adjusting the regulation of electrical circuit output voltage；
Fig. 3 B is another signal utilizing for touch-control system electric power controller of the present invention and adjusting the regulation of electrical circuit output voltage
Figure；
Fig. 4 A is the working state figure for touch-control system another embodiment of electric power controller of the present invention；
Fig. 4 B is the working state figure for touch-control system another embodiment of electric power controller of the present invention；And
Fig. 5 is the flow chart of the method for managing power supply for touch-control system of the present invention.
1,2: electric power controller 11,21: booster circuit
211-214: transistor 11t, 21t: outfan
22: circuit for detecting 23: load circuit
24: mu balanced circuit EN: enable signal
Vout: output voltage Vref: predetermined value
VDD: logic high level voltage/low-tension supply VDDH: running voltage
V1-V4: node voltage IO: output electric current
IC: electric current Iload: the load current of storage capacitors
CK: pulse wave signal CKB: reversely pulse wave signal
C: the electric capacity C of every ㄧ level circuits: stray capacitance
Cext: storage capacitors SW: switching switch
Curve: 1～6
Detailed description of the invention
By further illustrating the technological means and effect that the present invention taked by reaching predetermined goal of the invention, below in conjunction with
Accompanying drawing and preferred embodiment, electric power controller and the method for managing power supply to the touch-control system proposed according to the present invention, its tool
Body embodiment, structure, feature and effect thereof, after describing in detail such as.
Refer to shown in Fig. 2 A, be the circuit diagram for touch-control system electric power controller of the present invention.Power management fills
Put 2 and include booster circuit 21, circuit for detecting 22, adjustment circuit (non-icon) and load circuit 23.Booster circuit 21 is based on
Input voltage, voltage stabilizing charge and discharge control signal and boosting charge and discharge control signal boost output voltage Vout.Circuit for detecting 22 is detectd
Survey whether output voltage Vout reaches predetermined value.Adjust the circuit detecting result according to circuit for detecting 22, at output voltage Vout
Before reaching predetermined value, to boost, charge and discharge control signal adjusts output voltage Vout, and reaches predetermined in output voltage Vout
After value, adjusting output voltage with voltage stabilizing charge and discharge control signal, wherein boosting charge and discharge control signal is to output voltage Vout
Adjustment be faster than the adjustment to output voltage Vout of the voltage stabilizing charge and discharge control signal.Load circuit 23 is according to the adjustment adjusting circuit
As a result, the output voltage Vout of arrival predetermined value is received.
Additionally, be the load current ILoad on steady load circuit 23, to avoid causing ripple on output voltage Vout
(ripple) phenomenon, further includes mu balanced circuit 24 in an embodiment of the present invention, is produced in order to reduce output voltage Vout
The amplitude of ripple.Mu balanced circuit 24 can be storage capacitors Cext, in order to store output voltage Vout.
In an embodiment of the present invention, booster circuit 21 can use various voltage conversion (voltage converting) electricity
Road provides output voltage Vout, such as voltage regulator (voltage regulator) or electric charge pump (charge pump).
Electric charge pump comprises such as Dick gloomy (Dickson) electric charge pump.
In an embodiment of the present invention, load circuit 23 is for drive signal generation circuit, is applicable to contact panel, uses
Drive signal to contact panel (not shown) to provide.Driving signal to produce induced signal via contact panel, it is through letter
Number process after in order to judge whether contact panel has touched and touch position.
In an embodiment of the present invention, circuit is adjusted according to boosting charge and discharge control signal and voltage stabilizing charge and discharge control letter
Number adjust, change output voltage Vout, that is boosting charge and discharge control signal and voltage stabilizing charge and discharge control signal with output electricity
Between pressure Vout, there is fixing mathematical relationship.Detailed mathematical relationship will describe in herein below.
In an embodiment of the present invention, circuit for detecting 22 is for comparator, in order to compare the output electricity on mu balanced circuit 24
Pressure value Vout and voltage predetermined value Vref.Voltage predetermined value Vref is the reference voltage for touch-control system, and it can be by energy gap (band
Gap) circuit produces, or produces according to preset frequency CK of touch-control system.Additionally, circuit for detecting in embodiments of the present invention
Though 22 as a example by the comparator comparing voltage, but the device of detecting current change is equally applicable for the circuit for detecting 22 of the present invention,
In order to detect the change of output electric current Io, that is, when the output electric current Io that booster circuit 21 produces reaches electric current predetermined value, negative
Carry circuit 23 and then receive the output voltage Vout arriving predetermined value.
Electric power controller 2 further includes switching switch SW, is electrically connected at load circuit 23 and the output of booster circuit 21
Between end 21t.When circuit for detecting 22 detect output voltage Vout reach voltage predetermined value Vref time, switch SW be electrically connected with
Booster circuit 21, to receive the output voltage Vout of booster circuit 21 to load circuit 23.When output voltage Vout not up to electricity
During pressure predetermined value Vref, the connection of switching switch SW then disconnecting consumers circuit 23 and booster circuit 21 outfan 21t, thereby, can
Avoid booster circuit 21 in promoting during output voltage Vout, owing to load circuit 23 is electrically connected at booster circuit 21 institute
Cause the consumption of output electric current Io, that is avoid load current ILoad to cause consumption.
Additionally, when switching switch SW disconnecting consumers circuit 23 and the connection of booster circuit 21, output electric current Io also can be made
All flow to mu balanced circuit 24 charge, so that the output voltage Vout on mu balanced circuit 24 can reach the work electricity of load circuit 23
Pressure value VDDH so that touch-control system can recover to mode of operation rapidly when input is touched in reception from sleep pattern.
Refer to shown in Fig. 2 B, be the working state figure for touch-control system electric power controller 2 of the present invention.From the above,
Voltage predetermined value Vref produces, therefore, when touch-control system arrives this preset frequency CK according to preset frequency CK of touch-control system
Time, then the electric connection of switching switch SW and load circuit 23 is opened with an enable signal EN.The time such as curve 2 of its charging
Shown in, only adjust the curve 1 of output voltage Vout, the electricity of the present invention with a voltage stabilizing charge and discharge control signal compared to prior art
Source control device 2 can charge more quickly and arrive operational voltage value VDDH, and detailed curve charging process describes in herein below.
Additionally, need it is specifically intended that though the starting point charged in graphic middle output voltage Vout of the present invention is by zero, but
It is only simple illustration embodiments of the invention, and and be not used to limit the present invention.Stated differently, since touch-control system of the present invention
Electric power controller 2 there is circuit for detecting 22, may be used to detect output voltage Vout state, when touch-control system is by sleeping
Pattern recovery is to mode of operation, then when being entered sleep pattern by mode of operation, the output voltage Vout on mu balanced circuit 24 is not
Can significantly decrease, but via the electric connection of switching switch SW disconnecting consumers circuit 23 with booster circuit 21, can make defeated
Go out electric current Io all to flow to mu balanced circuit 24 and charge, in order to the sleep pattern that user is intended to from touch-control system next time enters to
Can be boosted during mode of operation charge and discharge control signal boost output voltage Vout, to react the touch-control of user rapidly.
Booster circuit 21 comprises the most several transistor 211,212,213,214, and transistor 214 is to be electrically connected with voltage stabilizing electricity
Road 24.In another embodiment of the present invention, voltage predetermined value Vref also can be set in the crystal being electrically connected with mu balanced circuit 24
Between breakdown voltage (Vbreakdown) and running voltage VDDH of touch-control system of pipe 214.
Furthermore, the booster circuit 21 of the present embodiment can use various voltage conversion circuit to implement.Fig. 2 A illustrates
Using level Four Dick gloomy electric charge pump to implement the booster circuit 21 of the present embodiment, it can be described by following formula:
Δ V=VDD [C/ (C+Cs)]-Io/ [f* (C+Cs)]
Wherein Vk is the node voltage (k is 1 to 4) of every ㄧ level circuit, and Δ V is the pressure reduction of every ㄧ level circuit, and Vout is output
Voltage, VDD is logic high level voltage (or low-tension supply) of pulse wave/reverse pulse wave signal CK/CKB, and f is pulse wave/reverse arteries and veins
The frequency of ripple signal CK/CKB, Vth is the critical voltage of transistor, and C is the electric capacity of every ㄧ level circuit, and Cs is the spuious of every ㄧ node
Electric capacity, Io is output electric current, a portion electric current ICFlowing to mu balanced circuit 24, another part electric current ILoad is then as load
Electric current.
In sum, when circuit for detecting 23 detect output voltage Vout be not up to voltage predetermined value Vref time, adjust electricity
Road replaces the adjustment to output voltage Vout of the frequency of voltage stabilizing charge and discharge control signal with the frequency of boosting charge and discharge control signal,
Wherein the frequency of boosting charge and discharge control signal is above the frequency of voltage stabilizing charge and discharge control signal.Furthermore, by above-mentioned
Mathematical relationship understands, and when frequency f increases, Δ V will be made to become big, and the most therefore output voltage Vout can rise rapidly.When defeated
Go out after voltage Vout reaches voltage predetermined value Vref, adjust circuit and then replace boosting with the frequency of voltage stabilizing charge and discharge control signal
The adjustment to output voltage Vout of the frequency of charge and discharge control signal.According to above-mentioned mathematical relationship, when frequency f reduces,
Δ V will be made to diminish, and output voltage Vout is compared to previously the most stably rising.
As shown in Figure 3A, it is to utilize for touch-control system electric power controller 2 of the present invention to adjust the regulation of electrical circuit output voltage
The schematic diagram of Vout.From graphic, before output voltage Vout reaches predetermined value Vref, with the charge and discharge control signal that boosts
CKH adjusts output voltage Vout, and after output voltage Vout reaches predetermined value Vref, with voltage stabilizing charge and discharge control signal CK
Adjust output voltage Vout, furthermore, when the frequency of the charge and discharge control signal CKH that boosts speeds, its charging curve CKH
Compared to the charging curve charged with the frequency of voltage stabilizing charge and discharge control signal CK, output voltage Vout can rise more quickly.
In another embodiment of the invention, boosting charge and discharge control signal CKH is based on voltage stabilizing charge and discharge control signal
CK combines with pulse pressure charge and discharge control signal (Insert pulse) and is produced, wherein pulse pressure charge and discharge control signal (Insert
Pulse) the frequency frequency higher than voltage stabilizing charge and discharge control signal CK.Furthermore, adjust circuit can use a logic or
Door (OR GATE) (the most graphic) implements voltage stabilizing charge and discharge control signal CK and pulse pressure charge and discharge control signal (Insert pulse)
Combination.When output voltage Vout is not up to voltage predetermined value Vref, then electric power controller 2 inputs voltage stabilizing charge and discharge control
Signal CK and pulse pressure charge and discharge control signal (Insert pulse), to logic sum gate, produce boosting charge and discharge control to combine
Signal.When output voltage Vout reaches voltage predetermined value Vref, electric power controller 2 cancels input pulse pressure charge and discharge control letter
Number (Insert pulse), to logic sum gate, makes logic sum gate export voltage stabilizing charge and discharge control signal CK.Similarly, fill with boosting
The discharge and recharge change that discharge control signal CKH and voltage stabilizing charge and discharge control signal CK adjustment output voltage Vout causes is as the most above-mentioned
Described in formula, repeat no more.
As shown in Figure 3 B, it is to utilize for touch-control system electric power controller 2 of the present invention to adjust the regulation of electrical circuit output voltage
Another schematic diagram of Vout.The frequency of pulse pressure charge and discharge control signal (Insert pulse) is above voltage stabilizing charge and discharge control letter
The frequency of number CK, and at the frequency of voltage stabilizing charge and discharge control signal CK and pulse pressure charge and discharge control signal (Insert pulse)
Frequency input to after logic sum gate computing, the boosting charge and discharge control letter higher than voltage stabilizing charge and discharge control signal CK can be obtained
Number CKH frequency.Additionally, implement voltage stabilizing charge and discharge control signal CK and pulse pressure charge and discharge control signal (Insert with logic sum gate
Pulse) combination is for one embodiment of the invention, and similar logic circuit is equally applicable in the present invention filling combining voltage stabilizing
Discharge control signal CK and pulse pressure charge and discharge control signal (Insert pulse).Similarly, when boosting charge and discharge control signal
When the frequency of CKH speeds, its charging curve CKH is compared to voltage stabilizing charge and discharge control signal CK frequency upgrading output voltage Vout
Charging curve can rise more quickly.
Refer to shown in Fig. 4 A, be the working state figure for another embodiment of touch-control system electric power controller 2 of the present invention.
Due to processing procedure and the error of temperature so that the critical voltage Vth of electric capacity C, stray capacitance Cs and the transistor of each IC
All being not quite similar, so that the slope that Vout rises is different, opening if therefore disconnecting switching in the way of calculating the set time
Close the electric connection of SW and load circuit 23, charge and cause output voltage thereon while mu balanced circuit 24 transition may be caused
Vout burns the transistor 214 in booster circuit 21, as curve 3 illustrates beyond the breakdown voltage of transistor.Or cause
Disconnecting consumers circuit 23 and the electric connection of switching switch SW, will make Touch Screen be recovered to Working mould by sleep pattern too late
The time of formula is the most long, as shown in curve 4.
Refer to shown in Fig. 4 B, be the working state figure for another embodiment of touch-control system electric power controller 2 of the present invention.
From the above, above-mentioned may burn transistor or charging interval the most long problem for improving, a suitable voltage can be made a reservation for pre-
Definite value Vref.As shown in curve 5, arrive voltage predetermined value Vref when using output voltage Vout produced by chip 1 (chip1)
Time, after can being detected by circuit for detecting 22, it is electrically connected with the defeated of load circuit 23 and booster circuit 21 by switching switch SW
Go out to hold 21t so that output electric current Io some current direction load circuits 23, to avoid burning the transistor of booster circuit 21,
Slow problem of charging is had additionally, be also not interposing at compared to the curve 1 of prior art.Similarly, as shown in curve 6, when making
When arriving voltage predetermined value Vref with output voltage Vout produced by chip 2 (chip2), can be detected it by circuit for detecting 22
After, it is electrically connected with the outfan 21t of load circuit 23 and booster circuit 21 by switching switch SW so that the one of booster circuit 21
Part output electric current Io flows to load circuit 23, to avoid burning the transistor of booster circuit 21.
Refer to shown in Fig. 5, be the flow chart of method for managing power supply for touch-control system of the present invention.The power supply of touch-control system
Management method comprises the following steps.In step S02, according to input voltage, voltage stabilizing charge and discharge control signal and boosting discharge and recharge
Control signal promotes the output voltage of booster circuit.In step S04, whether reach pre-by circuit for detecting detecting output voltage
Definite value.In step S06, with afterwards before output voltage reaches predetermined value, it is adjusted by circuit respectively with discharge and recharge of boosting
Control signal and voltage stabilizing charge and discharge control signal adjust output voltage, and wherein output voltage is carried by boosting charge and discharge control signal
Rise and be faster than voltage stabilizing charge and discharge control signal.In step S08, receive the output voltage arriving predetermined value by load circuit.
In sum, method for managing power supply further includes and reduces this output voltage produced ripple of Vout by mu balanced circuit 24
Amplitude.In an embodiment of the present invention, mu balanced circuit 24 is for storage capacitors Cext.Method for managing power supply further includes by opening
Close SW, before output voltage Vout reaches predetermined value Vref, disconnect the electric connection of booster circuit 21 and load circuit 23.Open
Closing SW is after output voltage Vout reaches predetermined value Vref, is electrically connected with booster circuit 21, to receive booster circuit 21
Output voltage Vout is to load circuit 23.
In one embodiment of this invention, the frequency of boosting charge and discharge control signal is above voltage stabilizing charge and discharge control signal
Frequency.In another embodiment of the invention, boosting charge and discharge control signal is based on voltage stabilizing charge and discharge control signal and
Pulse pressure charge and discharge control signal combination is produced, and wherein the frequency of pulse pressure charge and discharge control signal is believed higher than voltage stabilizing charge and discharge control
Number.
In sum, in one embodiment of the invention, voltage stabilizing charge and discharge control signal and pulse pressure charge and discharge control signal
It is to combine with logic sum gate, but is not limited thereto.Additionally, booster circuit 21 includes that electric charge pump, electric charge pump comprise the gloomy electricity of Dick
Lotus pump.Similar principle electric power controller described above, repeats no more in this.
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any technology people being familiar with this specialty
Member, in the range of without departing from technical solution of the present invention, when the technology contents of available the disclosure above makes a little change or modification
For the Equivalent embodiments of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit of the foundation present invention
Any simple modification, equivalent variations and the modification being made above example, all still falls within the range of technical solution of the present invention.
Claims (25)
1. the electric power controller of a touch-control system, it is characterised in that:
Booster circuit, according to input voltage, voltage stabilizing charge and discharge control signal and boosting charge and discharge control signal boost output voltage；
Circuit for detecting, detects whether this output voltage reaches predetermined value；
Adjust circuit, according to the detecting result of this circuit for detecting, before this output voltage reaches this predetermined value and afterwards, respectively
This output voltage is adjusted with this boosting charge and discharge control signal and this voltage stabilizing charge and discharge control signal；Wherein this boosting charge and discharge is automatically controlled
Signal processed is faster than this voltage stabilizing charge and discharge control signal to the adjustment of this output voltage；
Load circuit, according to the adjustment result of this adjustment circuit, receives this output voltage arriving this predetermined value；And
Switch, is to disconnect before this output voltage reaches this predetermined value, this booster circuit and the electric connection of this load circuit.
Electric power controller the most according to claim 1, it is characterised in that further include mu balanced circuit, in order to reduce this output
The amplitude of the produced ripple of voltage.
Electric power controller the most according to claim 2, it is characterised in that this mu balanced circuit is for storage capacitors.
Electric power controller the most according to claim 1, it is characterised in that this switch is that to reach this in this output voltage pre-
After definite value, it is electrically connected with this booster circuit, to receive this output voltage of this booster circuit to this load circuit.
Electric power controller the most according to claim 1, it is characterised in that the frequency of this boosting charge and discharge control signal is high
Frequency in this voltage stabilizing charge and discharge control signal.
Electric power controller the most according to claim 1, it is characterised in that this boosting charge and discharge control signal is based on this
Voltage stabilizing charge and discharge control signal is produced with pulse pressure charge and discharge control signal combination, wherein the frequency of this pulse pressure charge and discharge control signal
Rate is higher than this voltage stabilizing charge and discharge control signal.
Electric power controller the most according to claim 6, it is characterised in that this voltage stabilizing charge and discharge control signal and this pulse pressure
Charge and discharge control signal is to combine with logic sum gate.
Electric power controller the most according to claim 1, it is characterised in that this booster circuit includes electric charge pump.
Electric power controller the most according to claim 8, it is characterised in that this electric charge pump comprises Dick's gloomy electric charge pump.
Electric power controller the most according to claim 1, it is characterised in that this circuit for detecting is for comparator.
11. electric power controllers according to claim 1, it is characterised in that this load circuit is for driving signal to produce electricity
Road.
12. electric power controllers according to claim 1, it is characterised in that this touch-control system be for mobile phone, computer or
Person has the electronic system of Touch Screen.
13. electric power controllers according to claim 12, it is characterised in that this predetermined value of this output voltage is for this
The reference voltage of touch-control system.
14. electric power controllers according to claim 12, it is characterised in that this predetermined value of this output voltage is for root
Produce according to the preset frequency of this touch-control system.
15. electric power controllers according to claim 3, it is characterised in that this booster circuit comprises the most several transistor,
And these the most several transistors one of them be electrically connected with this storage capacitors.
16. electric power controllers according to claim 15, it is characterised in that this predetermined value of this output voltage be between
It is electrically connected with the breakdown voltage of this transistor of this storage capacitors, and between the running voltage of this touch-control system.
The method for managing power supply of 17. 1 kinds of touch-control systems, it is characterised in that comprising:
Output electricity according to input voltage, voltage stabilizing charge and discharge control signal and boosting charge and discharge control signal boost booster circuit
Pressure；
Detect whether this output voltage reaches predetermined value by circuit for detecting
With afterwards before this output voltage reaches this predetermined value, it is adjusted by circuit respectively with this boosting charge and discharge control signal
And this voltage stabilizing charge and discharge control signal adjusts this output voltage, wherein this output voltage is carried by this boosting charge and discharge control signal
Rise and be faster than this voltage stabilizing charge and discharge control signal；
This output voltage arriving this predetermined value is received by load circuit；And
Further include by switch, before this output voltage reaches this predetermined value, disconnect the electricity of this booster circuit and this load circuit
Property connect.
18. method for managing power supply according to claim 17, it is characterised in that further include that to reduce this by mu balanced circuit defeated
Go out the amplitude of the produced ripple of voltage.
19. method for managing power supply according to claim 18, it is characterised in that described method for managing power supply, this voltage stabilizing electricity
Road is for storage capacitors.
20. method for managing power supply according to claim 17, it is characterised in that this switch is to reach this in this output voltage
After predetermined value, it is electrically connected with this booster circuit, to receive this output voltage of this booster circuit to this load circuit.
21. method for managing power supply according to claim 17, it is characterised in that the frequency of this boosting charge and discharge control signal
Frequency higher than this voltage stabilizing charge and discharge control signal.
22. method for managing power supply according to claim 17, it is characterised in that this boosting charge and discharge control signal is based on
This voltage stabilizing charge and discharge control signal produced with pulse pressure charge and discharge control signal combination, wherein this pulse pressure charge and discharge control signal
Frequency is higher than this voltage stabilizing charge and discharge control signal.
23. method for managing power supply according to claim 22, it is characterised in that this voltage stabilizing charge and discharge control signal and this arteries and veins
Pressure charge and discharge control signal is to combine with logic sum gate.
24. method for managing power supply according to claim 17, it is characterised in that this booster circuit includes electric charge pump.
25. method for managing power supply according to claim 24, it is characterised in that this electric charge pump comprises Dick's gloomy electric charge pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210384331.0A CN103729045B (en) | 2012-10-11 | 2012-10-11 | The electric power controller of touch-control system and method for managing power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210384331.0A CN103729045B (en) | 2012-10-11 | 2012-10-11 | The electric power controller of touch-control system and method for managing power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103729045A CN103729045A (en) | 2014-04-16 |
| CN103729045B true CN103729045B (en) | 2016-08-10 |
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| CN201210384331.0A Active CN103729045B (en) | 2012-10-11 | 2012-10-11 | The electric power controller of touch-control system and method for managing power supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112019202B (en) * | 2020-07-14 | 2024-03-22 | 海速芯(杭州)科技有限公司 | Dual-wire capacitive detection power saving architecture and power saving method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010004717A (en) * | 2008-06-23 | 2010-01-07 | Toshiba Corp | Constant-voltage boost power supply |
-
2012
- 2012-10-11 CN CN201210384331.0A patent/CN103729045B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010004717A (en) * | 2008-06-23 | 2010-01-07 | Toshiba Corp | Constant-voltage boost power supply |
| US7928796B2 (en) * | 2008-06-23 | 2011-04-19 | Kabushiki Kaisha Toshiba | Constant voltage boost power supply |
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| Publication number | Publication date |
|---|---|
| CN103729045A (en) | 2014-04-16 |
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