CN103840656A - Charge pumping module and voltage generation method thereof - Google Patents
Charge pumping module and voltage generation method thereof Download PDFInfo
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- CN103840656A CN103840656A CN201210477842.7A CN201210477842A CN103840656A CN 103840656 A CN103840656 A CN 103840656A CN 201210477842 A CN201210477842 A CN 201210477842A CN 103840656 A CN103840656 A CN 103840656A
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Abstract
Disclosed is a charge pumping module. The charge pumping module comprises a multiplying power control circuit and a charge pumping circuit. The multiplying power control circuit provides boost multiplying power according to a control signal. The multiplying power control circuit comprises at least two multiplying power generation circuits with different boost multiplying power. The multiplying power control circuit dynamically switches the multiplying power generation circuits to adjust the provided boost multiplying power according to the control signal. The charge pumping circuit is coupled to the multiplying power control circuit. The charge pumping circuit is used for receiving an input voltage and converting the input voltage into an output voltage according to the boost multiplying power provided by the multiplying power control circuit. Besides, the invention also brings forward a voltage generation method of a charge pumping module.
Description
Technical field
The invention relates to a kind of voltage generating module and voltage generating method thereof, and relate to especially a kind of charge pump (charge pump) module and voltage generating method thereof.
Background technology
In electronic circuit, often need the supply voltage of various varying levels to use for circuit, therefore often configure charge pump circuit, to utilize existing supply voltage to produce the supply voltage of various varying levels.Charge pump circuit is, with a certain default multiplying power, its input voltage level is increased to (or downgrading), to produce the voltage of varying level.Therefore, the output-voltage levels of charge pump circuit is just closely bound up with its input voltage.
But, for charge pump circuit goes for various environment (that is possibly cannot determine its input voltage in the time designing charge pump circuit), and still can produce the output voltage of identical expection, generally to utilize voltage detecting circuit first to detect received input voltage, and the multiplying power of boosting that decision is preset accordingly, so that output-voltage levels is adjusted to rated voltage, then just produce rated output voltage by charge pump.The multiplying power of boosting that determined in this way can only be selected one conventionally among several default multiplying powers, cannot adjust the multiplying power of boosting according to actual design demand, therefore, the voltage that rated output voltage may be actual more required than next stage circuit is taller, thereby causes the waste of electric power.
Summary of the invention
The invention provides a kind of charge pump module, its multiplying power of boosting (boost ratio) is adjusted to reach the object of power saving in adaptability ground.
The invention provides a kind of voltage generating method of charge pump module, the multiplying power of boosting that charge pump module is adjusted on adaptability ground is to reach the object of power saving.
The invention provides a kind of charge pump module, comprise one times of rate control circuit and a charge pump circuit.Times rate control circuit is according to the control signal multiplying power of boosting.Times rate control circuit comprises that at least two have the boost multiplying power of multiplying power of difference and produce circuit.And, times rate control circuit according to control signal dynamically switch magnification produce circuit the provided multiplying power of boosting is provided.Charge pump circuit is coupled to a times rate control circuit.Charge pump circuit is in order to receive an input voltage, and input voltage is converted to an output voltage by the multiplying power of boosting providing according to times rate control circuit.
In one embodiment of this invention, above-mentioned control signal comprises a first period and a second phase.In first period, times rate control circuit switches to multiplying power according to control signal and produces circuit one wherein.In the second phase, times rate control circuit switches to multiplying power according to control signal and produces circuit another one wherein.
In one embodiment of this invention, above-mentioned charge pump module also comprises a voltage detecting circuit.Voltage detecting circuit is coupled to charge pump circuit and times rate control circuit.Voltage detecting circuit detects output voltage and controls signal to a times rate control circuit to provide accordingly.
In one embodiment of this invention, above-mentioned control signal comprises a first period and a second phase.Voltage detecting circuit comparison output voltage and one first critical value and one second critical value decide first period and the second phase work period (duty cycle) in control signal.
In one embodiment of this invention, the first above-mentioned critical value is greater than the second critical value.According to the testing result of voltage detecting circuit, if output voltage is less than the second critical value, times rate control circuit switches to multiplying power according to control signal and produces the multiplying power the greater that boosts in circuit.If output voltage is greater than the first critical value, times rate control circuit switches to multiplying power according to control signal and produces the multiplying power smaller of boosting in circuit.
In one embodiment of this invention, the first above-mentioned critical value and the second critical value are to decide according to a goal-selling value of output voltage.
In one embodiment of this invention, above-mentioned times rate control circuit also comprises a multiplying power selection circuit.Multiplying power is selected circuit to be coupled to multiplying power and is produced circuit.Multiplying power is selected circuit dynamically to switch to multiplying power according to control signal and is produced circuit one wherein.
In one embodiment of this invention, the multiplying power of boosting of above-mentioned multiplying power generation circuit is negative value.And the negative multiplying power of boosting that charge pump circuit provides according to times rate control circuit provides negative output voltage.
In one embodiment of this invention, above-mentioned multiplying power produce circuit boost multiplying power on the occasion of.And the positive multiplying power of boosting that charge pump circuit provides according to times rate control circuit provides positive output voltage.
Multiplying power that what in one embodiment of this invention, above-mentioned times rate control circuit provided boost produces in circuit and boosts between multiplying power the maximum and reckling between switched multiplying power.
The invention provides a kind of voltage generating method of charge pump module.Charge pump module comprises one times of rate control circuit and a charge pump circuit.Times rate control circuit comprises that at least two have the boost multiplying power of multiplying power of difference and produce circuit.Voltage generating method comprises the steps.According to a control signal, dynamically switch magnification produces circuit and adjusts and export one of the charge pump circuit multiplying power of boosting to.According to the multiplying power of boosting that exports charge pump circuit to, an input voltage is converted to an output voltage.
In one embodiment of this invention, above-mentioned control signal comprises a first period and a second phase.Dynamically the step of switch magnification generation circuit comprises the steps.In first period, switch to multiplying power according to control signal and produce circuit one wherein.In the second phase, switch to multiplying power according to control signal and produce circuit another one wherein.
In one embodiment of this invention, above-mentioned voltage generating method also comprises that detection output voltage is to provide accordingly control signal.
In one embodiment of this invention, above-mentioned control signal comprises a first period and a second phase.Detect output voltage to provide accordingly the step of control signal to comprise that comparison output voltage and one first critical value and one second critical value decide first period and the second phase work period in control signal.
In one embodiment of this invention, the first above-mentioned critical value is greater than the second critical value.Relatively the step of output voltage and one first critical value and one second critical value comprises the steps.If output voltage is less than the second critical value, switches to multiplying power according to control signal and produce the multiplying power the greater that boosts in circuit.If output voltage is greater than the first critical value, switches to multiplying power according to control signal and produce the multiplying power smaller of boosting in circuit.
In one embodiment of this invention, the first above-mentioned critical value and the second critical value are to decide according to a goal-selling value of output voltage.
In one embodiment of this invention, the multiplying power of boosting that above-mentioned multiplying power produces circuit is negative value, input voltage is converted in the step of output voltage, is to provide negative output voltage according to the negative multiplying power of boosting that exports charge pump circuit to.
In one embodiment of this invention, above-mentioned multiplying power produce circuit boost multiplying power on the occasion of, input voltage being converted in the step of output voltage, be to provide positive output voltage according to the positive multiplying power of boosting that exports charge pump circuit to.
In one embodiment of this invention, the above-mentioned multiplying power of boosting that exports charge pump circuit to produces in circuit and boosts between multiplying power the maximum and reckling between switched multiplying power.
Based on above-mentioned, in exemplary embodiment of the present invention, charge pump module is dynamically switched between multiplying power multiple boosting according to control signal, to modulate adaptively the equivalent multiplier value between the multiplying power of being switched.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate appended graphic being described in detail below.
Accompanying drawing explanation
Fig. 1 illustrates the schematic diagram of the charge pump module of the present invention's one correlation technique.
Fig. 2 illustrates the schematic diagram of the charge pump module of one embodiment of the invention.
Fig. 3 illustrates the control signal of one embodiment of the invention and the summary oscillogram of output voltage.
Fig. 4 illustrates the schematic diagram of the charge pump module of another embodiment of the present invention.
Fig. 5 illustrates the control signal of another embodiment of the present invention and the summary oscillogram of output voltage.
Fig. 6 illustrates the flow chart of steps of the voltage generating method of the charge pump module of one embodiment of the invention.
Fig. 7 illustrates the schematic diagram of the charge pump module of another embodiment of the present invention.
Fig. 8 illustrates the control signal of another embodiment of the present invention and the summary oscillogram of output voltage.
Fig. 9 illustrates the circuit diagram of the voltage detecting circuit of one embodiment of the invention.
Figure 10 illustrates the schematic diagram of the charge pump module of another embodiment of the present invention.
Figure 11 illustrates the control signal of another embodiment of the present invention and the summary oscillogram of output voltage.
Figure 12 illustrates the flow chart of steps of the voltage generating method of the charge pump module of another embodiment of the present invention.
[main element label declaration]
100,200,400,600,900: charge pump module
110,210,410,610,910: charge pump circuit
120,630,930: voltage detecting circuit 130: multiplying power is selected module
132,224,424,624,924: multiplying power is selected circuit
134_1,134_2,134_3,134_4,222_1,222_2,422_1,422_2,622_1,622_2,922_1,922_2: multiplying power produces circuit
220,420,620,920: times rate control circuit 632,634: comparator
Vin: input voltage Vout: output voltage
Sctrl: control signal Sbr: the multiplying power of boosting
T1: first period T2: the second phase
S600, S610, S200, S210, S220: the step of voltage generating method
VH ,-VL: the first critical value VL ,-VH: the second critical value
Embodiment
Fig. 1 illustrates the schematic diagram of the charge pump module of the present invention's one correlation technique.Please refer to Fig. 1, in this example, the main design requirement of charge pump module 100, is to guarantee that the output voltage V out that charge pump circuit 110 is exported is not less than application demand.For example, application demand at least will reach in input voltage vin between between 2.3 volts to 4.8 volts in the situation that, and charge pump circuit 110 is wanted to provide the output voltage V out that is greater than 5 volts, and load current is now between 0 milliampere to 10 milliamperes.
In this example, voltage detecting circuit 120 can detect the size of input voltage vin, is used as the foundation of multiplying power selection module 130 switch magnification.Under the operation of higher input voltage vin, multiplying power is selected module 130 can be switched to lower multiplying power and is produced circuit, with meeting under the demand of output voltage V out, reaches the effect of power saving simultaneously.Otherwise under the operation of lower input voltage vin, multiplying power is selected module 130 can be switched to higher multiplying power and is produced circuit to reach the demand size of output voltage V out.For example, in the time that output voltage V out is 3.7 volts to 4.5 volts, multiplying power is selected module 130 can be switched to multiplying power and is produced circuit 1341; When output voltage is 3 volts to 3.7 volts, multiplying power is selected module 130 can be switched to multiplying power and is produced circuit 1342; When output voltage is 2.5 volts to 3 volts, multiplying power is selected module 130 can be switched to multiplying power and is produced circuit 1343; Output voltage is below 2.5 time, and multiplying power is selected module 130 can be switched to multiplying power and produced circuit 1344.
Therefore, in order to meet the demand, multiplying power selects module 130 must comprise that the multiplying power of four kinds of different multiplying produces circuit 134_1 to 134_4, be X1.5, X2, X2.5, X3, to provide multiple different multiplying power to select, its multiplying power selects circuit 132 according to the needed maximum load current of output, decides under the operation of how many input voltage vin voltages, need to select how many multiplying powers to reach needed output voltage V out, and selected multiplying power determine current consumption value.But this kind of design cannot change to do corresponding multiple for different load currents and switch, to reach the demand of power saving.That is to say, charge pump module 100 can only be selected one among some fixing multiplying power, cannot adjust the needed multiplying power of boosting with load current size according to input voltage size, its result can cause input current to equal load current and be multiplied by the multiplying power of boosting, thereby causes too much current drain.In addition, in the time that the different multiplying power of design produces circuit, need to correspond to different circuit frameworks to obtain the needed multiplying power of boosting, the multiplying power of therefore the more planting select demand can improve charge pump module design complexities, increase the shared chip area of circuit and reduce the driving force of charge pump.
In exemplary embodiment of the present invention, charge pump module is dynamically switched between multiplying power multiple boosting according to control signal, to modulate the equivalent multiplier value between the multiplying power of being switched.In one embodiment, charge pump module also can utilize the height that detects output voltage automatically to adjust multiplying power to reach the object of power saving.For more clearly understanding the present invention, below will coordinate graphicly, describe in detail with at least one exemplary embodiment.
Fig. 2 illustrates the schematic diagram of the charge pump module of one embodiment of the invention.Please refer to Fig. 2, the charge pump module 200 of the present embodiment comprises a charge pump circuit 210 and one times of rate control circuit 220.Times rate control circuit 220 is according to the control signal Sctrl multiplying power of boosting, and the multiplying power of boosting herein can be modulated according to actual design demand, is not limited among some fixing multiplying power and selects one.Therefore, times rate control circuit 220 of the present embodiment comprises that multiplying power selects circuit 224 and at least two to have the boost multiplying power of multiplying power of difference and produce circuit 222_1,222_2, comprise X1.5, X2.5, only this two multiplying power is only in order to illustrate, and the present invention is not limited.Multiplying power is selected circuit 224 to be coupled to multiplying power and is produced circuit 222_1,222_2, produces circuit 222_1,222_2, the multiplying power Sbr that boosts being provided to adjust in order to dynamically to carry out switch magnification according to control signal Sctrl.Charge pump circuit 210 is coupled to times rate control circuit 210, in order to receive an input voltage vin, and input voltage vin is converted to an output voltage V out by the multiplying power Sbr that boosts providing according to times rate control circuit 220, and export the load circuit (not illustrating) of its next stage to.
In the present embodiment, the modulator approach of the multiplying power of boosting is to set switch magnification by timesharing to produce circuit 222_1,222_2, to reach between equivalent driving force and power consumption between this two multiplying power.Particularly, Fig. 3 illustrates the control signal of one embodiment of the invention and the summary oscillogram of output voltage.Please refer to Fig. 2 and Fig. 3, the control signal Sctrl of the present embodiment comprises a first period T1 and a second phase T2.At first period T1, control signal Sctrl is set as high level, and the multiplying power that multiplying power selects circuit 224 to switch to accordingly X2.5 produces circuit 222_2.At second phase T2, control signal Sctrl is set as low level, and the multiplying power that multiplying power selects circuit 224 to switch to accordingly X1.5 produces circuit 222_1.To provide the charge pump circuit 210 of positive voltage as example, at first period T1, selecting circuit 224 due to multiplying power is that the multiplying power that switches to X2.5 produces circuit 222_2, and the positive voltage Vout that therefore charge pump circuit 210 is exported can climb along with the time.Then, in the time that the sequential of control signal Sctrl switches to second phase T2, the multiplying power that multiplying power selects circuit 224 to switch to X1.5 produces circuit 222_1, thereby the positive voltage Vout that charge pump circuit 210 is exported can decline along with the time.Therefore, the multiplying power modulator approach of the present embodiment, by adjusting the time set point of first period T1 and second phase T2, so that control signal Sctrl can be in response to different output voltage V out and current loading, reaches circuit application requirements and saves power consumption.The multiplying power modulation result of the present embodiment is for example the multiplying power Sbr that boosts between multiplying power X1.5 and X2.5, times rate control circuit 220 need not be confined to meet applied voltage demand from multiplying power X1.5 and the selected larger multiple of X2.5, but causes the result compared with power consumption.
In the above-described embodiments, boost multiplying power X1.5 and the X2.5 that multiplying power produces circuit 222_1,222_2 be on the occasion of, the positive multiplying power Sbr that boosts that charge pump circuit 210 provides according to times rate control circuit 220 provides positive output voltage V out, only multiplying power modulation concept of the present invention is not limited to provide the charge pump circuit 210 of positive voltage, also can be applicable to the charge pump circuit that negative voltage is provided.Fig. 4 illustrates the schematic diagram of the charge pump module of another embodiment of the present invention.Fig. 5 illustrates the control signal of another embodiment of the present invention and the summary oscillogram of output voltage.Please refer to Fig. 4 and Fig. 5, the charge pump module 400 of the present embodiment is similar to the charge pump module 200 of Fig. 2, only main difference is for example that the multiplying power of boosting that the multiplying power of times rate control circuit 420 produces circuit 422_1,422_2 is respectively and comprises X-1.5, X-2.5 between the two, only this two multiplying power is only in order to illustrate, and the present invention is not limited.Therefore, in the application of charge pump circuit 410 that negative voltage is provided, at first period T1, selecting circuit 424 due to multiplying power is that the multiplying power that switches to X-2.5 produces circuit 422_2, and the negative voltage Vout that therefore charge pump circuit 410 is exported can decline along with the time.Then, in the time that the sequential of control signal Sctrl switches to second phase T2, the multiplying power that multiplying power selects circuit 424 to switch to X-1.5 produces circuit 422_1, thereby the negative voltage Vout that charge pump circuit 410 is exported can climb along with the time.Therefore, the multiplying power modulation result of the present embodiment is for example the multiplying power Sbr that boosts between multiplying power X-1.5 and X-2.5.Therefore, in the present embodiment, the multiplying power of boosting that multiplying power produces circuit 422_1,422_2 is negative value.And the negative multiplying power Sbr that boosts that charge pump circuit 410 provides according to times rate control circuit 420 provides negative output voltage V out.
It should be noted, in the embodiment of Fig. 2 and Fig. 4, times rate control circuit is all to comprise that at least two multiplying powers produce circuit in order to illustrate, but of the present invention times of rate control circuit also can comprise that multiple multiplying powers produce circuit, for example, comprise that the multiplying power of four kinds of different multiplying produces circuit.Implement in aspect at this kind, according to the control signal Sctrl setting, multiplying power selects circuit to produce between circuit and switch in these multiplying powers, and what times rate control circuit was exported boost, and multiplying power Sbr produces in circuit and boosts between multiplying power the maximum and reckling between switched multiplying power.For example, times rate control circuit comprises that the multiplying power of four kinds of different multiplying X1.5, X2, X2.5, X3 produces circuit, multiplying power selects circuit to adjust according to the control signal Sctrl setting the running time that multiplying power is the multiplying power generation circuit of X2 and X3, and ceaselessly between switches, and can reach and be equal to the effect of boosting that multiplying power is X2.5.Therefore,, in this example, times rate control circuit does not optionally configure the multiplying power generation circuit that multiplying power is X2.5, to save complex circuit designs degree and the chip area of charge pump module.
Fig. 6 illustrates the flow chart of steps of the voltage generating method of the charge pump module of one embodiment of the invention.Referring to Fig. 2 and Fig. 6, the voltage generating method of the present embodiment is for example applicable to the charge pump module 200 of Fig. 2, and it comprises the steps.First,, in step S600, according to control signal Sctrl, dynamically switch magnification produces circuit 222_1,222_2 and adjusts the multiplying power Sbr that boosts that exports charge pump circuit 210 to.Afterwards, in step S610, according to the multiplying power Sbr that boosts that exports charge pump circuit to, input voltage vin is converted to output voltage V out, and exports the load circuit (not illustrating) of charge pump module 200 next stage to.
In addition, the voltage generating method of embodiments of the invention can, by obtaining enough teachings, suggestion and implementation in the narration of Fig. 2 to Fig. 5 embodiment, therefore repeat no more.
In the present invention, charge pump module has multiple different mode to carry out the signal sequence of setting and adjustment control signal Sctrl, and wherein a kind of aspect of implementing is for example to utilize the mode that detects output voltage V out to reach.Fig. 7 illustrates the schematic diagram of the charge pump module of another embodiment of the present invention.Please refer to Fig. 7, the charge pump module 600 of the present embodiment is similar to the charge pump module 200 of Fig. 2, and only main difference is for example that charge pump module 600 also comprises a voltage detecting circuit 630 between the two.Voltage detecting circuit 630 is coupled to charge pump circuit 610 and times rate control circuit 620, in order to detect output voltage V out to provide accordingly control signal Sctrl to times rate control circuit 620.
Fig. 8 illustrates the control signal of another embodiment of the present invention and the summary oscillogram of output voltage.Fig. 9 illustrates the circuit diagram of the voltage detecting circuit of one embodiment of the invention.Please refer to Fig. 7 to Fig. 9, in the present embodiment, voltage detecting circuit 630 comparison output voltage V out and one first critical value VH and one second critical value VL decide first period T1 and the second phase T2 work period (duty cycle) in control signal Sctrl.Particularly, the voltage detecting circuit 630 of the present embodiment comprises two comparators 632,634, and both non-holds to receive output voltage V out in opposite directions, and end of oppisite phase is respectively in order to receive output voltage the first critical value VH and the second critical value VL, as shown in Figure 9.In the application of output voltage V out, the first critical value VH and the second critical value VL are for just, and the first critical value VH is greater than the second critical value VL.
In the present embodiment, according to the testing result of voltage detecting circuit 630, if output voltage V out is less than the second critical value VL, times rate control circuit 620 switches to multiplying power according to control signal Sctrl and produces the multiplying power the greater that boosts in circuit, and the multiplying power that for example switches to multiplying power and be X2.5 produces circuit 622_2.Relatively, if output voltage V out is greater than the first critical value VH, times rate control circuit 620 switches to multiplying power according to control signal Sctrl and produces the multiplying power smaller of boosting in circuit, and the multiplying power that for example switches to multiplying power and be X1.5 produces circuit 622_1.According to a simulation result of the present embodiment, this circuit framework is under the operation of 14 milliamperes at current loading, and it is that the first period T1 of X2.5 is for large that the shared time scale (being the work period) of second phase T2 that switches to multiplying power and be X1.5 switches to multiplying power.Be under the operation of 26 milliamperes at current loading, it is that the second phase T2 of X1.5 is for large that the shared time scale (being the work period) of first period T1 that switches to multiplying power and be X2.5 switches to multiplying power.In addition,, in exemplary embodiment of the present invention, the first critical value VH and the second critical value VL decide according to a goal-selling value of output voltage V out.In this example, the first critical value VH is for example set as 5.5 volts, and the second critical value VL is for example set as 5 volts, but the present invention is not limited to this.
In simple terms, the voltage detecting circuit 630 of the present embodiment detects output voltage V out, and it is the ceiling voltage of output voltage V out that charge pump circuit 610 is set the first critical value VH, the second critical value VL is the minimum voltage of output voltage V out, and this second critical value VL can be set as the minimum voltage of application demand.When output voltage V out voltage is during lower than the second critical value VL, its multiplication of voltage ability that represents multiplying power has not instantly reached application demand, and in next sequential, times rate control circuit 620 is switched to the higher multiplying power of boosting.Relatively, when output voltage V out is during higher than the set point of the first critical value VH, in next sequential, times rate control circuit 620 is switched to the lower multiplying power of boosting, to save power consumption.
This kind detects concept that output voltage carrys out setup control signal Sctrl and is not limited to provide the charge pump circuit 610 of positive voltage, also can be applicable to the charge pump circuit that negative voltage is provided.Figure 10 illustrates the schematic diagram of the charge pump module of another embodiment of the present invention.Figure 11 illustrates the control signal of another embodiment of the present invention and the summary oscillogram of output voltage.Please refer to Figure 10 and Figure 11, the charge pump module 900 of the present embodiment is similar to the charge pump module 600 of Fig. 7, only main difference is for example that times rate control circuit 920 is between multiplying power X-1.5, X-2.5, to switch boosting between the two, only this two multiplying power is only in order to illustrate, and the present invention is not limited.And the set point of the first critical value VH and the second critical value VL is also adjusted thereupon.In this example, the first critical value-VL is for example set as-5 volts, and the second critical value-VH is for example set as-5.5 volts, but the present invention is not limited to this.Therefore, in the application of charge pump circuit 910 that negative voltage is provided, according to the testing result of voltage detecting circuit 930, if output voltage V out is less than the second critical value-VH, times rate control circuit 920 switches to multiplying power according to control signal Sctrl and produces the multiplying power the greater that boosts in circuit, and the multiplying power that for example switches to multiplying power and be X-1.5 produces circuit 922_1.Relatively, if output voltage V out is greater than the first critical value-VL, times rate control circuit 620 switches to multiplying power according to control signal Sctrl and produces the multiplying power smaller of boosting in circuit, and the multiplying power that for example switches to multiplying power and be X-2.5 produces circuit 922_2.Its mode of operation is similar to the disclosed charge pump module 600 of Fig. 7, does not repeat them here.
On the other hand, times rate control circuit produces in the enforcement aspect of circuit in the multiplying power of four kinds of different multiplying X1.5, X2, X2.5, X3, charge pump module can utilize voltage detecting circuit to detect the size of output voltage equally, dynamically to switch between these four kinds of multiplying powers.Because the height of output voltage can reflect the size of load current instantly, therefore times rate control circuit can be adjusted multiplying power to reach the object of power saving by corresponding different load current automatically.
Figure 12 illustrates the flow chart of steps of the voltage generating method of the charge pump module of another embodiment of the present invention.Referring to Fig. 7 and Figure 12, the voltage generating method of the present embodiment is for example applicable to the charge pump module 600 of Fig. 7, and it comprises the steps.First, in step S200, detect the output voltage V out of charge pump circuit 610, to provide accordingly control signal Sctrl to times rate control circuit 620.Then,, in step S210, according to control signal Sctrl, dynamically switch magnification produces circuit 622_1,622_2 and adjusts the multiplying power Sbr that boosts that exports charge pump circuit 610 to.Afterwards, in step S220, according to the multiplying power Sbr that boosts that exports charge pump circuit to, input voltage vin is converted to output voltage V out, and exports the load circuit (not illustrating) of charge pump module 600 next stage to.
In addition, the voltage generating method of embodiments of the invention can, by obtaining enough teachings, suggestion and implementation in the narration of Fig. 7 to Figure 11 embodiment, therefore repeat no more.
In sum, in exemplary embodiment of the present invention, charge pump module is dynamically switched between multiplying power multiple boosting according to control signal, to modulate the equivalent multiplier value between the multiplying power of being switched.In addition, charge pump module also can utilize the height that detects output voltage automatically to adjust multiplying power.
Although the present invention discloses as above with embodiment; so it is not in order to limit the present invention; under any, in technical field, have and conventionally know the knowledgeable; without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on the appended claim scope person of defining.
Claims (19)
1. a charge pump module, comprising:
One times of rate control circuit, according to the control signal multiplying power of boosting, wherein this times of rate control circuit comprises that at least two have the boost multiplying power of multiplying power of difference and produce circuit, and this times of rate control circuit dynamically switches those multiplying powers according to this control signal and produce circuit this provided multiplying power of boosting is provided; And
One charge pump circuit, is coupled to this times of rate control circuit, receive an input voltage, and this input voltage is converted to an output voltage by this multiplying power of boosting providing according to this times of rate control circuit.
2. charge pump module according to claim 1, wherein this control signal comprises a first period and a second phase, in this first period, this times of rate control circuit switches to those multiplying powers according to this control signal and produces circuit one wherein, in this second phase, this times of rate control circuit switches to those multiplying powers according to this control signal and produces circuit another one wherein.
3. charge pump module according to claim 1, also comprises:
One voltage detecting circuit, is coupled to this charge pump circuit and this times of rate control circuit, and this voltage detecting circuit detects this output voltage to provide accordingly this to control signal to this times of rate control circuit.
4. charge pump module according to claim 3, wherein this control signal comprises a first period and a second phase, and this voltage detecting circuit relatively this output voltage and one first critical value and one second critical value decides this first period and the work period of this second phase in this control signal.
5. charge pump module according to claim 4, wherein this first critical value is greater than this second critical value, according to the testing result of this voltage detecting circuit, if this output voltage is less than this second critical value, this times of rate control circuit switches to those multiplying powers according to this control signal and produces the multiplying power the greater that boosts in circuit, if this output voltage is greater than this first critical value, this times of rate control circuit switches to those multiplying powers according to this control signal and produces the multiplying power smaller of boosting in circuit.
6. charge pump module according to claim 4, wherein this first critical value and this second critical value are to decide according to a goal-selling value of this output voltage.
7. charge pump module according to claim 1, wherein this times of rate control circuit also comprises:
One multiplying power is selected circuit, is coupled to those multiplying powers and produces circuit, dynamically switches to those multiplying powers produce circuit one wherein according to this control signal.
8. charge pump module according to claim 1, wherein those multiplying powers of boosting of those multiplying powers generation circuit are negative value, and this negative multiplying power of boosting that this charge pump circuit provides according to this times of rate control circuit provides this negative output voltage.
9. charge pump module according to claim 1, wherein those multiplying powers produce circuit those boost multiplying powers on the occasion of, and this positive multiplying power of boosting that this charge pump circuit provides according to this times of rate control circuit provides this positive output voltage.
10. charge pump module according to claim 1, this multiplying power of boosting that wherein this times of rate control circuit provides produces between those switched multiplying powers that in circuit, this boosts between multiplying power the maximum and reckling.
The voltage generating method of 11. 1 kinds of charge pump modules, wherein this charge pump module comprises one times of rate control circuit and a charge pump circuit, this times of rate control circuit comprises that at least two have the boost multiplying power of multiplying power of difference and produce circuit, and this voltage generating method comprises:
According to a control signal, dynamically switch those multiplying powers and produce circuit and adjust and export one of this charge pump circuit multiplying power of boosting to; And
According to this multiplying power of boosting that exports this charge pump circuit to, an input voltage is converted to an output voltage.
12. voltage generating methods according to claim 11, wherein this control signal comprises a first period and a second phase, the step of dynamically switching those multiplying powers generation circuit comprises:
In this first period, switch to those multiplying powers according to this control signal and produce circuit one wherein; And
In this second phase, switch to those multiplying powers according to this control signal and produce circuit another one wherein.
13. voltage generating methods according to claim 11, also comprise:
Detect this output voltage so that this control signal to be provided accordingly.
14. voltage generating methods according to claim 13, wherein this control signal comprises a first period and a second phase, detects this output voltage and comprises with the step that this control signal is provided accordingly:
Relatively this output voltage and one first critical value and one second critical value decide this first period and the work period of this second phase in this control signal.
15. voltage generating methods according to claim 14, wherein this first critical value is greater than this second critical value, and relatively the step of this output voltage and one first critical value and one second critical value comprises:
If this output voltage is less than this second critical value, switches to those multiplying powers according to this control signal and produce the multiplying power the greater that boosts in circuit; And
If this output voltage is greater than this first critical value, switches to those multiplying powers according to this control signal and produce the multiplying power smaller of boosting in circuit.
16. voltage generating methods according to claim 14, wherein this first critical value and this second critical value are to decide according to a goal-selling value of this output voltage.
17. voltage generating methods according to claim 11, wherein those multiplying powers of boosting of those multiplying powers generation circuit are negative value, this input voltage is converted in the step of this output voltage, be to provide this negative output voltage according to this negative multiplying power of boosting that exports this charge pump circuit to.
18. voltage generating methods according to claim 11, wherein those multiplying powers produce circuit those boost multiplying powers on the occasion of, this input voltage is converted in the step of this output voltage, be to provide this positive output voltage according to this positive multiplying power of boosting that exports this charge pump circuit to.
19. voltage generating methods according to claim 11, this that wherein exports this charge pump circuit to the multiplying power of boosting produces between those switched multiplying powers that in circuit, this boosts between multiplying power the maximum and reckling.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553230A (en) * | 2015-12-18 | 2016-05-04 | 上海华虹宏力半导体制造有限公司 | Power supply system and storage system |
| CN110224587A (en) * | 2018-03-01 | 2019-09-10 | 新唐科技股份有限公司 | Digital voltage-stabilization control system and its method |
| CN110534066A (en) * | 2018-05-24 | 2019-12-03 | 格科微电子（上海）有限公司 | The power control method of LCD driving chip |
| CN110581645A (en) * | 2018-06-07 | 2019-12-17 | 新唐科技股份有限公司 | Switching type voltage stabilizer control system |
| CN112583255A (en) * | 2020-12-18 | 2021-03-30 | 合肥联宝信息技术有限公司 | Power supply device of electronic equipment and electronic equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447503A (en) * | 2002-03-27 | 2003-10-08 | 三洋电机株式会社 | Booster and pick-up device using such booster |
| CN101079572A (en) * | 2006-05-24 | 2007-11-28 | 立锜科技股份有限公司 | Mode conversion control circuit and method of charge pump |
| CN101449452A (en) * | 2006-07-07 | 2009-06-03 | 半导体元件工业有限责任公司 | A steady current charge pump controller |
| TW200952313A (en) * | 2008-06-13 | 2009-12-16 | Green Solution Technology Inc | DC/DC converter circuit and controller thereof |
| GB201014826D0 (en) * | 2006-12-22 | 2010-10-20 | Wolfson Ltd | Charge pump circuit and methods of operation thereof |
| CN101873064A (en) * | 2009-04-24 | 2010-10-27 | 瑞萨电子株式会社 | The liquid crystal indicator of booster circuit and use booster circuit |
| CN102082505A (en) * | 2010-12-20 | 2011-06-01 | 惠州Tcl移动通信有限公司 | Booster charge pump and boosting method thereof and mobile terminal |
| CN102754321A (en) * | 2009-12-01 | 2012-10-24 | 天工方案公司 | Continuously variable switched capacitor dc-dc voltage converter |
-
2012
- 2012-11-22 CN CN201210477842.7A patent/CN103840656A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447503A (en) * | 2002-03-27 | 2003-10-08 | 三洋电机株式会社 | Booster and pick-up device using such booster |
| CN101079572A (en) * | 2006-05-24 | 2007-11-28 | 立锜科技股份有限公司 | Mode conversion control circuit and method of charge pump |
| CN101449452A (en) * | 2006-07-07 | 2009-06-03 | 半导体元件工业有限责任公司 | A steady current charge pump controller |
| GB201014826D0 (en) * | 2006-12-22 | 2010-10-20 | Wolfson Ltd | Charge pump circuit and methods of operation thereof |
| GB2472701A (en) * | 2006-12-22 | 2011-02-16 | Wolfson Microelectronics Plc | Charge pump circuit with dual rail output |
| TW200952313A (en) * | 2008-06-13 | 2009-12-16 | Green Solution Technology Inc | DC/DC converter circuit and controller thereof |
| CN101873064A (en) * | 2009-04-24 | 2010-10-27 | 瑞萨电子株式会社 | The liquid crystal indicator of booster circuit and use booster circuit |
| CN102754321A (en) * | 2009-12-01 | 2012-10-24 | 天工方案公司 | Continuously variable switched capacitor dc-dc voltage converter |
| CN102082505A (en) * | 2010-12-20 | 2011-06-01 | 惠州Tcl移动通信有限公司 | Booster charge pump and boosting method thereof and mobile terminal |
Non-Patent Citations (1)
| Title |
|---|
| 姜文: "基于电荷泵的高效率白光LED驱动电路设计", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553230A (en) * | 2015-12-18 | 2016-05-04 | 上海华虹宏力半导体制造有限公司 | Power supply system and storage system |
| CN105553230B (en) * | 2015-12-18 | 2018-02-23 | 上海华虹宏力半导体制造有限公司 | Power-supply system and accumulator system |
| CN110224587A (en) * | 2018-03-01 | 2019-09-10 | 新唐科技股份有限公司 | Digital voltage-stabilization control system and its method |
| CN110534066A (en) * | 2018-05-24 | 2019-12-03 | 格科微电子（上海）有限公司 | The power control method of LCD driving chip |
| CN110534066B (en) * | 2018-05-24 | 2022-08-05 | 格科微电子（上海）有限公司 | Power supply control method of LCD driving chip |
| CN110581645A (en) * | 2018-06-07 | 2019-12-17 | 新唐科技股份有限公司 | Switching type voltage stabilizer control system |
| CN110581645B (en) * | 2018-06-07 | 2021-07-23 | 新唐科技股份有限公司 | Switching type voltage stabilizer control system |
| CN112583255A (en) * | 2020-12-18 | 2021-03-30 | 合肥联宝信息技术有限公司 | Power supply device of electronic equipment and electronic equipment |
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Application publication date: 20140604 |