CN102158076A - Output voltage regulator circuit of charge pump - Google Patents
Output voltage regulator circuit of charge pump Download PDFInfo
- Publication number
- CN102158076A CN102158076A CN2011101173610A CN201110117361A CN102158076A CN 102158076 A CN102158076 A CN 102158076A CN 2011101173610 A CN2011101173610 A CN 2011101173610A CN 201110117361 A CN201110117361 A CN 201110117361A CN 102158076 A CN102158076 A CN 102158076A
- Authority
- CN
- China
- Prior art keywords
- voltage
- charge pump
- circuit
- output
- links
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses an output voltage regulator circuit of a charge pump, and the input voltage of the charge pump is a variable driving voltage. The voltage regulator circuit comprises a filter circuit and a voltage-stabilizing circuit, wherein an input end of the filter circuit is connected with an output end of the charge pump, and the filter circuit is used for filtering the output voltage of the charge pump so as to generate a filtering voltage and output the filtering voltage; and an input end of the voltage-stabilizing circuit is connected with an output end of the filter circuit, and the voltage-stabilizing circuit is used for receiving the filtering voltage, as well as an output end of the voltage-stabilizing circuit outputs a fixed voltage. The voltage-stabilizing circuit is adopted to stabilize the filtering voltage generated by filtering the output voltage of the charge pump via the filter circuit, and output the fixed voltage, thus meeting the requirement that the output voltage is taken as a programming voltage.
Description
Technical field
The present invention relates to technical field of semiconductors, be meant a kind of output voltage regulation circuit that is used for charge pump especially.
Background technology
Charge pump is a kind of capacitor voltage converter, be mainly used in the lifting circuit voltage, because its circuit is simple and efficient is higher, can be widely used in the integrated circuit of single power supply, for example can provide the voltage signal that is higher than supply power voltage, be used for the write operation of data for EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPROM) or flash memory (Flash Memory).
As a rule, the voltage of the required output of charge pump can be higher than the voltage signal of supply power voltage, therefore often be provided with output voltage regulation circuit with the output voltage clamper of charge pump in needed value, this output voltage regulation circuit also can improve the stability of charge pump output voltage simultaneously.
In the prior art, mainly contain the output voltage regulation circuit of two kinds of structures, a kind of is the mode of current feedback, and another kind is the mode of said current dumping.
Please refer to Fig. 1, Fig. 1 illustrates the output voltage regulation circuit into the charge pump of prior art.This regulating circuit is the mode of said current dumping, and this circuit comprises: charge pump 1, load 2, current source 3, transistor 4, adjuster 5.The output port of charge pump 1 is connected to first end of load 2, and second end of load 2 is connected to first end of current source 3, the second end ground connection of current source 3; Output, another output port (transistor 4 is P-MOS herein, and its drain electrode is connected to the output of charge pump 1) that is connected to charge pump 1 in the source electrode of transistor 4 and the drain electrode as regulating circuit; Adjuster 5 first ends are connected to the output port of described regulating circuit, and adjuster 5 second ends are connected with described charge pump 1, disconnect the charging of described charge pump 1 in order to the generation control signal.
Because charge pump 1 is as the condenser type device, it is not continuous operation, but therefore discharging and recharging repeatedly inevitably can produce more serious ripple phenomenon.Charge pump 1 output voltage V H goes up the ripple that produces can cause the voltage oscillation that produces then on the regulating circuit output voltage V PP, the stability that influences circuit.The output port VPP of above-mentioned regulating circuit is subjected to the influence of charge pump 1 output voltage V H; also can produce the ripple phenomenon in order to reduce the ripple on the VPP; usually can between second end of load 2 and ground, be connected filter capacitor 6, with the ripple of the output port VPP of elimination regulating circuit.
Yet, for above-mentioned charge pump 1, the voltage that its input voltage VDDQ usually can the employing system supplies with, and the voltage that system supplies with, its value is normally in the scope of a variation.Adopt of the input of the voltage of changing value as charge pump 1, also can there be a side-play amount in the value of the regulating circuit output voltage V PP of corresponding generation, for example the value of VDDQ be 2.7V～～5.5V, needing the voltage VPP of output is 7.6V, just might produce the side-play amount of a 400mV.Because output voltage V PP is used to programme, so need a stable magnitude of voltage.As seen, adopt the output voltage regulation circuit of the charge pump of prior art, the value of output voltage V PP can not meet the demands.
In view of this, be necessary to provide a kind of charge pump output voltage regulation circuit in fact, to address the above problem.
Summary of the invention
The problem that the present invention solves is, a kind of charge pump output voltage regulation circuit is provided, and reaching output voltage stabilization, thereby satisfies the requirement of output voltage as program voltage.
For addressing the above problem, the invention provides a kind of charge pump output voltage regulation circuit, the driving voltage of the input voltage of described charge pump for changing, this voltage regulator circuit comprises:
Filter circuit, its input links to each other with described electric charge delivery side of pump, carries out filtering in order to the output voltage with described charge pump, to produce filtering voltage and output;
Voltage stabilizing circuit, its input links to each other with the output of described filter circuit, in order to receive described filtering voltage, the output output fixed voltage of described voltage stabilizing circuit.
Optionally, the input voltage of described charge pump be 2.7V～～5.5V.
Optionally, described fixed voltage is 7.6V or 8V.
Optionally, described voltage stabilizing circuit comprises: one in the voltage-stable transistor, its source electrode and drain electrode links to each other with the output of described filter circuit, and another exports described fixed voltage as the output of described voltage stabilizing circuit; The voltage stabilizing charge pump, its input input fixed value voltage, output connects the grid of described voltage-stable transistor, and described voltage stabilizing electric charge delivery side of pump produces voltage of voltage regulation, and described voltage of voltage regulation is in order to the control voltage as described voltage-stable transistor grid; Wherein, the difference of the threshold voltage of described voltage of voltage regulation and described voltage-stable transistor is less than described filtering voltage, and the value of described fixed voltage equals threshold voltage poor of the value of described voltage of voltage regulation and described voltage-stable transistor.
Optionally, described fixed value voltage is 1V, 1.2V, 1.5V or 1.8V.
Optionally, described voltage-stable transistor is a P type field effect transistor, and its drain electrode links to each other with the output of described filter circuit, and source electrode is exported described fixed voltage as the output of described voltage stabilizing circuit.
Optionally, described voltage stabilizing circuit also comprises first adjuster, described first adjuster, first end connects described voltage stabilizing electric charge delivery side of pump, described first adjuster, second end is connected with the control end of described voltage stabilizing charge pump, in order to when described voltage of voltage regulation during more than or equal to first preset value, disconnect the charging of described voltage stabilizing charge pump, when described voltage of voltage regulation during less than described first preset value, the charging of closed described voltage stabilizing charge pump.
Optionally, described first adjuster comprises first voltage divider and first comparison circuit, described first voltage divider links to each other with described voltage stabilizing electric charge delivery side of pump, and in order to receive described voltage of voltage regulation, the dividing potential drop of described voltage of voltage regulation being carried out first multiple produces first dividing potential drop; Described first comparison circuit is connected with described first voltage divider, and be connected with the control end of described voltage stabilizing charge pump, in order to described first dividing potential drop and first reference voltage are compared, when described first dividing potential drop during more than or equal to described first reference voltage, disconnect the clock driver circuit of described voltage stabilizing charge pump or make the driving force of described clock driver circuit die down, when described first dividing potential drop during less than described first reference voltage, the clock driver circuit of closed described voltage stabilizing charge pump or make the driving force grow of described clock driver circuit; Wherein, described first reference voltage and described first multiple long-pending equals described first preset value.
Optionally, the scope of described first reference voltage be 0.5V～～1.2V.
Optionally, described first adjuster is integrated in described voltage stabilizing charge pump.
Optionally, described first adjuster and described voltage stabilizing charge pump are independent component.
Optionally, described filter circuit comprises: load, and its first end links to each other with described electric charge delivery side of pump; Filter capacitor, the one end links to each other other end ground connection with second end of described load; Current source, the one end links to each other other end ground connection with second end of described load; The filter crystal pipe, its grid links to each other with second end of described load, and one in the source electrode of described filter crystal pipe and the drain electrode links to each other with described electric charge delivery side of pump, is used to receive the output voltage of described charge pump, another exports described filtering voltage as the output of described filter circuit.
Optionally, described filter circuit comprises: load, and its first end links to each other with described electric charge delivery side of pump; Filter capacitor, the one end links to each other other end ground connection with described electric charge delivery side of pump; Current source, the one end links to each other other end ground connection with second end of described load; The filter crystal pipe, its grid links to each other with second end of described load, and one in the source electrode of described filter crystal pipe and the drain electrode links to each other with described electric charge delivery side of pump, is used to receive the output voltage of described charge pump, another exports described filtering voltage as the output of described filter circuit.
Optionally, described filter crystal pipe is a P type field effect transistor, and its drain electrode links to each other with described electric charge delivery side of pump, and source electrode is exported described filtering voltage as the output of described filter circuit.
Optionally, described filter circuit also comprises second adjuster, described second adjuster, first end connects the output of described filter circuit, described second adjuster, second end is connected with the control end of described charge pump, in order to when described filtering voltage during more than or equal to second preset value, disconnect the charging of described charge pump, when described filtering voltage during less than described second preset value, the charging of closed described charge pump.
Optionally, described second adjuster comprises second voltage divider and second comparison circuit, and described second voltage divider links to each other with the output of described filter circuit, and in order to receive described filtering voltage, the dividing potential drop of described filtering voltage being carried out second multiple produces second dividing potential drop; Described second comparison circuit is connected with described second voltage divider, and be connected with the control end of described charge pump, in order to described second dividing potential drop and second reference voltage are compared, when described second dividing potential drop during more than or equal to described second reference voltage, disconnect the clock driver circuit of described charge pump or make the driving force of described clock driver circuit die down, when described second dividing potential drop during less than described second reference voltage, the clock driver circuit of closed described charge pump or make the driving force grow of described clock driver circuit; Wherein, described second reference voltage and described second multiple long-pending equals described second preset value.
Optionally, the scope of described second reference voltage be 0.5V～～1.2V.
Optionally, described second adjuster is integrated in described charge pump.
Optionally, described second adjuster and described charge pump are independent component.
Optionally, described load is any in resistance, transistor, diode, the triode.
Compared with prior art, adopt charge pump output voltage regulation circuit of the present invention, have the following advantages:
1. owing to adopt voltage stabilizing circuit, the filtering voltage that the output voltage of charge pump is produced after by filter circuit filtering carries out voltage stabilizing, the output fixed voltage, thus satisfy the requirement of output voltage as program voltage.
2. in one embodiment of the invention, described voltage stabilizing circuit comprises: voltage-stable transistor, voltage stabilizing charge pump; The grid of voltage-stable transistor is controlled by the voltage of voltage regulation of voltage stabilizing charge pump output; Accept described filtering voltage for one in the source electrode of voltage-stable transistor and the drain electrode, another is as the output of described voltage stabilizing circuit; Because described first preset value of corresponding described voltage of voltage regulation and the threshold value of described voltage-stable transistor is poor, described filtering voltage less than the described filtering voltage of correspondence, therefore the output of the output of described voltage stabilizing circuit is the poor of described voltage of voltage regulation and described threshold value, thereby the output of described voltage stabilizing circuit is exported described fixed voltage.
3. described first adjuster comprises first voltage divider and first comparison circuit, and described first voltage divider produces first dividing potential drop with the dividing potential drop that voltage of voltage regulation carries out first multiple; Described first comparison circuit compares described first dividing potential drop and first reference voltage; Because described first dividing potential drop carries out obtaining after the dividing potential drop of first multiple for adopting described first voltage divider, thereby can provide the first less reference voltage to compare.
Description of drawings
Fig. 1 illustrates the output voltage regulation circuit into the charge pump of prior art.
Fig. 2 illustrates the output voltage regulation circuit module map into charge pump of the present invention.
Fig. 3 illustrates the circuit structure diagram into voltage stabilizing circuit in the charge pump output voltage regulation circuit of the present invention.
It is the circuit structure diagram that comprises the voltage stabilizing circuit of first adjuster, one implementation among Fig. 3 that Fig. 4 illustrates.
Fig. 5 illustrates the circuit structure diagram into filter circuit in charge pump of the present invention and the output voltage regulation circuit thereof.
It is to comprise the charge pump of second adjuster, one implementation among Fig. 5 and the circuit structure diagram of filter circuit thereof that Fig. 6 illustrates.
Embodiment
Just as described in the background section, adopt the input of the voltage of changing value as charge pump, also can there be a side-play amount in the value of the output voltage of corresponding generation.Therefore how making that output voltage is that a stable magnitude of voltage is used for programming, is the problem that needs research.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, promptly in conjunction with the accompanying drawings and embodiments the specific embodiment of the present invention is described in detail below.
Set forth a lot of details in the following description so that fully understand the present invention, implement but the present invention can also adopt other to be different from alternate manner described here, so the present invention has not been subjected to the restriction of following public specific embodiment.
The problem that the present invention solves is, a kind of charge pump output voltage regulation circuit is provided, and reaching output voltage stabilization, thereby satisfies the requirement that programming is provided.
See also Fig. 2, Fig. 2 illustrates the output voltage regulation circuit module map into charge pump of the present invention.
For addressing the above problem, the invention provides a kind of charge pump output voltage regulation circuit, the driving voltage VDDQ of the input voltage of described charge pump 10 for changing, this voltage regulator circuit comprises:
Wherein, the input voltage of described charge pump 10 for example can for 2.7V～～5.5V; Described fixed voltage VPP this to sentence 7.6V be example, and not as limit; Certainly, described fixed voltage VPP also can be 8V or other high pressure, and the size of described fixed voltage VPP depends on corresponding flash memory programming voltage.
Owing to adopt voltage stabilizing circuit 30, the filtering voltage VPP_PRE that the output voltage V H of charge pump is produced after by filter circuit 30 filtering carries out voltage stabilizing, output fixed voltage VPP, thus satisfy the requirement of the fixed voltage VPP of output as program voltage.
Please consult Fig. 3, Fig. 3 illustrates the circuit structure diagram into voltage stabilizing circuit in the charge pump output voltage regulation circuit of the present invention.
Wherein, described voltage stabilizing circuit 30 comprises: voltage-stable transistor 31, its source electrode with the drain electrode in a output with described filter circuit 20 link to each other, another exports described fixed voltage VPP as the output of described voltage stabilizing circuit 30; Voltage stabilizing charge pump 32, its input input fixed value voltage VDD, output connects the grid of described voltage-stable transistor 31, and the output of described voltage stabilizing charge pump 32 produces voltage of voltage regulation, and described voltage of voltage regulation is in order to the control voltage as described voltage-stable transistor 31 grids; Wherein, the difference of the threshold voltage of described voltage of voltage regulation and described voltage-stable transistor 31 is less than described filtering voltage VPP_PRE, described voltage-stable transistor 31 is operated in the saturation region, and the value of described fixed voltage VPP equals threshold voltage poor of the value of described voltage of voltage regulation and described voltage-stable transistor 31.
Wherein, described fixed value voltage VDD is 1V, 1.2V, 1.5V or 1.8V; Because the employing fixed value voltage, so the voltage of voltage regulation that the output of described voltage stabilizing charge pump 32 produces also is the fixing voltage of numerical value.
Wherein, described voltage stabilizing circuit 30 also comprises first adjuster 33, described first adjuster, 33 first ends connect the output of described voltage stabilizing charge pump 32, described first adjuster, 33 second ends are connected with the control end of described voltage stabilizing charge pump 32, in order to when described voltage of voltage regulation during more than or equal to first preset value, disconnect the charging of described voltage stabilizing charge pump 32, when described voltage of voltage regulation during less than described first preset value, the charging of closed described voltage stabilizing charge pump 32.
Please consult Fig. 4 again, it is the circuit structure diagram that comprises the voltage stabilizing circuit of first adjuster, one implementation among Fig. 3 that Fig. 4 illustrates.
In this embodiment, described first adjuster 33 comprises first voltage divider 332 and first comparison circuit 331, described first voltage divider 332 links to each other with the output of described voltage stabilizing charge pump 32, in order to receive described voltage of voltage regulation, the dividing potential drop of described voltage of voltage regulation being carried out first multiple produces first dividing potential drop; Described first comparison circuit 331 is connected with described first voltage divider 332, and be connected with the control end of described voltage stabilizing charge pump 32, in order to described first dividing potential drop and the first reference voltage V REF1 are compared, when described first dividing potential drop during more than or equal to the described first reference voltage V REF1, disconnect the charging of described voltage stabilizing charge pump 32, when described first dividing potential drop during less than the described first reference voltage V REF1, the charging of closed described voltage stabilizing charge pump 32; Wherein, described first reference voltage V REF1 and described first multiple long-pending equals described first preset value.Wherein, disconnect the charging of described voltage stabilizing charge pump 32, can be specially the clock driver circuit that disconnects described voltage stabilizing charge pump 32 or make the driving force of described clock driver circuit die down; And the described voltage stabilizing charge pump 32 of described closure be charged as opposite process.
Because described first dividing potential drop carries out obtaining after the dividing potential drop of first multiple for adopting described first voltage divider 332, thereby can provide the first less reference voltage V REF1 to compare.
Wherein, the scope of described first reference voltage be 0.5V～～1.2V.
Wherein, described first adjuster 33 is an independent component with described voltage stabilizing charge pump 32.Certainly, described first adjuster 33 also can be integrated in described voltage stabilizing charge pump 32.
Described first multiple can be 9 herein, and described first reference voltage can be 0.9V herein, when described first dividing potential drop during more than or equal to the described first reference voltage V REF1 (0.9V), disconnect the clock driver circuit of described voltage stabilizing charge pump 32 or make the driving force of described clock driver circuit die down, when described first dividing potential drop during less than the described first reference voltage V REF1 (0.9V), the clock driver circuit of closed described voltage stabilizing charge pump 32 or make the driving force grow of described clock driver circuit.Thereby the voltage of voltage regulation of guaranteeing described voltage stabilizing charge pump 32 outputs is 8.1V.Described first preset value is 8.1V, and the threshold voltage of described voltage-stable transistor 31 is 0.5V; Then Shu Chu described fixed voltage VPP is the poor of described first preset value and described threshold voltage, is 7.6V.
Fig. 5 illustrates the circuit structure diagram into filter circuit in charge pump of the present invention and the output voltage regulation circuit thereof.
Wherein, described filter circuit 20 comprises: load 21, and its first end links to each other with the output of described charge pump 10; Filter capacitor 25, the one end links to each other other end ground connection with second end of described load 21; Current source 22, the one end links to each other other end ground connection with second end of described load 21; Filter crystal pipe 23, its grid links to each other with second end of described load 21, the source electrode of described filter crystal pipe 23 with the drain electrode in a output with described charge pump 10 link to each other, be used to receive the output voltage V H of described charge pump 10, another exports described filtering voltage VPP_PRE as the output of described filter circuit 20.
Certainly, the filter capacitor 25 in the described filter circuit 20 can also link to each other other end ground connection for the output of an end with described charge pump 10.
Wherein, described filter crystal pipe 23 is a P type field effect transistor, and its drain electrode links to each other with the output of described charge pump 10, and source electrode is exported described filtering voltage VPP_PRE as the output of described filter circuit 20.
Wherein, described filter circuit 20 also comprises second adjuster 24, described second adjuster, 24 first ends connect the output of described filter circuit 20, described second adjuster, second end is connected with the control end of described charge pump 10, in order to as described filtering voltage VPP_PRE during more than or equal to second preset value, disconnect the charging of described charge pump 10, as described filtering voltage VPP_PRE during less than described second preset value, the charging of closed described charge pump 10.
Using charge pump output voltage regulation circuit of the present invention, the difference of threshold value that can be set at described first preset value and described voltage-stable transistor 31 is less than described second preset value.Thereby the output of the output of described voltage stabilizing circuit 30 is the poor of described voltage of voltage regulation and described threshold value, thereby the output of described voltage stabilizing circuit 30 is exported described fixed voltage VPP.
It is to comprise the charge pump of second adjuster, one implementation among Fig. 5 and the circuit structure diagram of filter circuit thereof that Fig. 6 illustrates.
In this embodiment, described second adjuster 24 comprises second voltage divider 241 and second comparison circuit 242, described second voltage divider 241 links to each other with the output of described filter circuit 20, in order to receive described filtering voltage VPP_PRE, the dividing potential drop that described filtering voltage VPP_PRE is carried out second multiple produces second dividing potential drop; Described second comparison circuit 242 is connected with described second voltage divider 241, and be connected with the control end of described charge pump 10, in order to described second dividing potential drop and the second reference voltage V REF2 are compared, when described second dividing potential drop during more than or equal to the described second reference voltage V REF2, disconnect the charging of described charge pump 10, when described second dividing potential drop during less than the described second reference voltage V REF2, the charging of closed described charge pump 10; Wherein, described second reference voltage V REF2 and described second multiple long-pending equals described second preset value.Wherein, disconnect the charging of described charge pump 10, can be specially the clock driver circuit that disconnects described charge pump 10 or make the driving force of described clock driver circuit die down; And the described charge pump 10 of described closure be charged as opposite process.
Because described second dividing potential drop carries out obtaining after the dividing potential drop of second multiple for adopting described second voltage divider 332, thereby can provide the second less reference voltage V REF2 to compare.
Wherein, the scope of described second reference voltage can for 0.5V～～1.2V.
Wherein, described second adjuster 24 is an independent component with described charge pump 10; Certainly, described second adjuster 24 also can be integrated in described charge pump 10.
Described second multiple can be 8 herein, and described second reference voltage can be 1V herein, and described second preset value is 8V.When described second dividing potential drop during more than or equal to the described second reference voltage V REF2 (1V), disconnect the clock driver circuit of described charge pump 10 or make the driving force of described clock driver circuit die down, when described second dividing potential drop during less than the described second reference voltage V REF2 (1V), the clock driver circuit of closed described charge pump 10 or make the driving force grow of described clock driver circuit.Thereby guarantee that described filtering voltage VPP_PRE is 8V.In an application example of the present invention, described output voltage V H is 9V, and the voltage difference at described load 21 two ends is assumed to be 0.5V, and the grid voltage of then described filter crystal pipe 23 is 8.5V, and the threshold voltage of described filter crystal pipe 23 for example is 0.5V.Thereby the difference of the threshold voltage of the grid voltage of described filter crystal pipe 23 and described filter crystal pipe 23 is 8V, less than described output voltage V H, therefore described filter crystal pipe 23 is operated in the saturation region, and the value of described filtering voltage is threshold voltage poor of the grid voltage of described filter crystal pipe 23 and described filter crystal pipe 23.
Wherein, described load 21 is any in resistance, transistor, diode, the triode.When described load 21 was transistor, its resistance can be for corresponding bigger, and filter circuit 20 is by the capacitance product decision of the resistance of load 21 and filter capacitor 25, and correspondingly, the area of described filter capacitor 25 can be accomplished less.
As seen,, on the one hand,, the ripple of the output voltage V DDQ of described charge pump 10 is filtered, obtain described filtering voltage VPP_PRE by the effect of described filter circuit 20 by the acting in conjunction of described filter circuit 20 and voltage stabilizing circuit 30; On the other hand, by described voltage stabilizing circuit 30, to described filtering voltage VPP_PRE effect, and then the fixing fixed voltage VPP of formation voltage value.Because described ripple carries out filtering by filter circuit 20, thereby does not also have DC current source in the described voltage stabilizing circuit 30.On the one hand, reduced the area of DC current source in the described voltage stabilizing circuit 30; On the other hand, reduced DC current source in the described voltage stabilizing circuit 30 after, the driver capacity requirement of needed voltage stabilizing charge pump 32 diminishes, and is less thereby the area of voltage stabilizing charge pump 32 can be accomplished.Therefore, the area of described voltage stabilizing circuit 30 is less.
Though the present invention with preferred embodiment openly as above; but it is not to be used for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can make possible change and modification, so protection scope of the present invention should be as the criterion with the scope that claim of the present invention was defined.
Claims (20)
1. charge pump output voltage regulation circuit, the driving voltage of the input voltage of described charge pump for changing is characterized in that this voltage regulator circuit comprises:
Filter circuit, its input links to each other with described electric charge delivery side of pump, carries out filtering in order to the output voltage with described charge pump, to produce filtering voltage and output;
Voltage stabilizing circuit, its input links to each other with the output of described filter circuit, in order to receive described filtering voltage, the output output fixed voltage of described voltage stabilizing circuit.
2. charge pump output voltage regulation circuit as claimed in claim 1 is characterized in that, the input voltage of described charge pump be 2.7V～～5.5V.
3. charge pump output voltage regulation circuit as claimed in claim 1 is characterized in that, described fixed voltage is 7.6V or 8V.
4. charge pump output voltage regulation circuit as claimed in claim 1, it is characterized in that described voltage stabilizing circuit comprises: one in the voltage-stable transistor, its source electrode and drain electrode links to each other with the output of described filter circuit, another exports described fixed voltage as the output of described voltage stabilizing circuit; The voltage stabilizing charge pump, its input input fixed value voltage, output connects the grid of described voltage-stable transistor, and described voltage stabilizing electric charge delivery side of pump produces voltage of voltage regulation, and described voltage of voltage regulation is in order to the control voltage as described voltage-stable transistor grid; Wherein, the difference of the threshold voltage of described voltage of voltage regulation and described voltage-stable transistor is less than described filtering voltage, and the value of described fixed voltage equals threshold voltage poor of the value of described voltage of voltage regulation and described voltage-stable transistor.
5. charge pump output voltage regulation circuit as claimed in claim 4 is characterized in that, described fixed value voltage is 1V, 1.2V, 1.5V or 1.8V.
6. charge pump output voltage regulation circuit as claimed in claim 4, it is characterized in that described voltage-stable transistor is a P type field effect transistor, its drain electrode links to each other with the output of described filter circuit, source electrode is exported described fixed voltage as the output of described voltage stabilizing circuit.
7. charge pump output voltage regulation circuit as claimed in claim 4, it is characterized in that, described voltage stabilizing circuit also comprises first adjuster, described first adjuster, first end connects described voltage stabilizing electric charge delivery side of pump, described first adjuster, second end is connected with the control end of described voltage stabilizing charge pump, in order to when described voltage of voltage regulation during more than or equal to first preset value, disconnect the charging of described voltage stabilizing charge pump, when described voltage of voltage regulation during less than described first preset value, the charging of closed described voltage stabilizing charge pump.
8. charge pump output voltage regulation circuit as claimed in claim 7, it is characterized in that, described first adjuster comprises first voltage divider and first comparison circuit, described first voltage divider links to each other with described voltage stabilizing electric charge delivery side of pump, in order to receive described voltage of voltage regulation, the dividing potential drop of described voltage of voltage regulation being carried out first multiple produces first dividing potential drop; Described first comparison circuit is connected with described first voltage divider, and be connected with the control end of described voltage stabilizing charge pump, in order to described first dividing potential drop and first reference voltage are compared, when described first dividing potential drop during more than or equal to described first reference voltage, disconnect the clock driver circuit of described voltage stabilizing charge pump or make the driving force of described clock driver circuit die down, when described first dividing potential drop during less than described first reference voltage, the clock driver circuit of closed described voltage stabilizing charge pump or make the driving force grow of described clock driver circuit; Wherein, described first reference voltage and described first multiple long-pending equals described first preset value.
9. charge pump output voltage regulation circuit as claimed in claim 8 is characterized in that, the scope of described first reference voltage be 0.5V～～1.2V.
10. charge pump output voltage regulation circuit as claimed in claim 7 is characterized in that, described first adjuster is integrated in described voltage stabilizing charge pump.
11. charge pump output voltage regulation circuit as claimed in claim 7 is characterized in that, described first adjuster and described voltage stabilizing charge pump are independent component.
12., it is characterized in that described filter circuit comprises as each described charge pump output voltage regulation circuit among the claim 1-11: load, its first end links to each other with described electric charge delivery side of pump; Filter capacitor, the one end links to each other other end ground connection with second end of described load; Current source, the one end links to each other other end ground connection with second end of described load; The filter crystal pipe, its grid links to each other with second end of described load, and one in the source electrode of described filter crystal pipe and the drain electrode links to each other with described electric charge delivery side of pump, is used to receive the output voltage of described charge pump, another exports described filtering voltage as the output of described filter circuit.
13. charge pump output voltage regulation circuit as claimed in claim 12, it is characterized in that described filter crystal pipe is a P type field effect transistor, its drain electrode links to each other with described electric charge delivery side of pump, source electrode is exported described filtering voltage as the output of described filter circuit.
14. charge pump output voltage regulation circuit as claimed in claim 12, it is characterized in that, described filter circuit also comprises second adjuster, described second adjuster, first end connects the output of described filter circuit, described second adjuster, second end is connected with the control end of described charge pump, and be connected with the control end of described charge pump, in order to when described filtering voltage during more than or equal to second preset value, disconnect the charging of described charge pump, when described filtering voltage during less than described second preset value, the charging of closed described charge pump.
15. charge pump output voltage regulation circuit as claimed in claim 14, it is characterized in that, described second adjuster comprises second voltage divider and second comparison circuit, described second voltage divider links to each other with the output of described filter circuit, in order to receive described filtering voltage, the dividing potential drop of described filtering voltage being carried out second multiple produces second dividing potential drop; Described second comparison circuit is connected with described second voltage divider, in order to described second dividing potential drop and second reference voltage are compared, when described second dividing potential drop during more than or equal to described second reference voltage, disconnect the clock driver circuit of described charge pump or make the driving force of described clock driver circuit die down, when described second dividing potential drop during less than described second reference voltage, the clock driver circuit of closed described charge pump or make the driving force grow of described clock driver circuit; Wherein, described second reference voltage and described second multiple long-pending equals described second preset value.
16. charge pump output voltage regulation circuit as claimed in claim 15 is characterized in that, the scope of described second reference voltage be 0.5V～～1.2V.
17. charge pump output voltage regulation circuit as claimed in claim 14 is characterized in that, described second adjuster is integrated in described charge pump.
18. charge pump output voltage regulation circuit as claimed in claim 14 is characterized in that, described second adjuster and described charge pump are independent component.
19. charge pump output voltage regulation circuit as claimed in claim 12 is characterized in that, described load is any in resistance, transistor, diode, the triode.
20., it is characterized in that described filter circuit comprises as each described charge pump output voltage regulation circuit among the claim 1-11: load, its first end links to each other with described electric charge delivery side of pump; Filter capacitor, the one end links to each other other end ground connection with described electric charge delivery side of pump; Current source, the one end links to each other other end ground connection with second end of described load; The filter crystal pipe, its grid links to each other with second end of described load, and one in the source electrode of described filter crystal pipe and the drain electrode links to each other with described electric charge delivery side of pump, is used to receive the output voltage of described charge pump, another exports described filtering voltage as the output of described filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110117361.0A CN102158076B (en) | 2011-05-06 | 2011-05-06 | Charge pump output voltage regulation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110117361.0A CN102158076B (en) | 2011-05-06 | 2011-05-06 | Charge pump output voltage regulation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102158076A true CN102158076A (en) | 2011-08-17 |
| CN102158076B CN102158076B (en) | 2015-09-09 |
Family
ID=44439319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110117361.0A Active CN102158076B (en) | 2011-05-06 | 2011-05-06 | Charge pump output voltage regulation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102158076B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413567A (en) * | 2013-08-22 | 2013-11-27 | 上海宏力半导体制造有限公司 | Reference voltage supply circuit |
| CN103413568A (en) * | 2013-08-22 | 2013-11-27 | 上海宏力半导体制造有限公司 | Reference voltage supply circuit |
| CN106100291A (en) * | 2015-04-23 | 2016-11-09 | 台湾积体电路制造股份有限公司 | Power supply changeover device and operational approach thereof |
| CN108696118A (en) * | 2017-04-07 | 2018-10-23 | 原相科技(槟城)有限公司 | The bias method of boost pressure circuit and matrix therein |
| CN108808643A (en) * | 2018-05-31 | 2018-11-13 | 上海艾为电子技术股份有限公司 | A kind of analog switching circuit |
| CN109067170A (en) * | 2018-07-25 | 2018-12-21 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of pressure stabilizing source circuit |
| CN110299173A (en) * | 2019-07-05 | 2019-10-01 | 合肥联诺科技有限公司 | A kind of controlled discharge module for NOR FLASH programmed process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050134391A1 (en) * | 2003-12-19 | 2005-06-23 | Yasuyuki Kimura | Semiconductor integrated circuit having built-in PLL circuit |
| CN101674012A (en) * | 2009-10-14 | 2010-03-17 | 上海宏力半导体制造有限公司 | Charge pump circuit |
| CN101764518A (en) * | 2009-11-18 | 2010-06-30 | 上海宏力半导体制造有限公司 | Capacitive charge pump circuit |
| CN101847026A (en) * | 2010-05-18 | 2010-09-29 | 北京航空航天大学 | Voltage stabilizer on mixed signal integrated circuit chip |
| CN101888180A (en) * | 2010-07-16 | 2010-11-17 | 上海宏力半导体制造有限公司 | Output voltage regulator circuit of charge pump |
-
2011
- 2011-05-06 CN CN201110117361.0A patent/CN102158076B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050134391A1 (en) * | 2003-12-19 | 2005-06-23 | Yasuyuki Kimura | Semiconductor integrated circuit having built-in PLL circuit |
| CN101674012A (en) * | 2009-10-14 | 2010-03-17 | 上海宏力半导体制造有限公司 | Charge pump circuit |
| CN101764518A (en) * | 2009-11-18 | 2010-06-30 | 上海宏力半导体制造有限公司 | Capacitive charge pump circuit |
| CN101847026A (en) * | 2010-05-18 | 2010-09-29 | 北京航空航天大学 | Voltage stabilizer on mixed signal integrated circuit chip |
| CN101888180A (en) * | 2010-07-16 | 2010-11-17 | 上海宏力半导体制造有限公司 | Output voltage regulator circuit of charge pump |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413567A (en) * | 2013-08-22 | 2013-11-27 | 上海宏力半导体制造有限公司 | Reference voltage supply circuit |
| CN103413568A (en) * | 2013-08-22 | 2013-11-27 | 上海宏力半导体制造有限公司 | Reference voltage supply circuit |
| CN103413567B (en) * | 2013-08-22 | 2016-03-09 | 上海华虹宏力半导体制造有限公司 | Reference voltage provides circuit |
| CN103413568B (en) * | 2013-08-22 | 2016-09-07 | 上海华虹宏力半导体制造有限公司 | Reference voltage provides circuit |
| CN106100291A (en) * | 2015-04-23 | 2016-11-09 | 台湾积体电路制造股份有限公司 | Power supply changeover device and operational approach thereof |
| CN106100291B (en) * | 2015-04-23 | 2019-01-11 | 台湾积体电路制造股份有限公司 | Power adapter and its operating method |
| CN108696118A (en) * | 2017-04-07 | 2018-10-23 | 原相科技(槟城)有限公司 | The bias method of boost pressure circuit and matrix therein |
| CN108696118B (en) * | 2017-04-07 | 2020-12-08 | 原相科技(槟城)有限公司 | Boosting circuit and method for biasing substrate therein |
| CN108808643A (en) * | 2018-05-31 | 2018-11-13 | 上海艾为电子技术股份有限公司 | A kind of analog switching circuit |
| CN108808643B (en) * | 2018-05-31 | 2019-11-29 | 上海艾为电子技术股份有限公司 | A kind of analog switching circuit |
| CN109067170A (en) * | 2018-07-25 | 2018-12-21 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of pressure stabilizing source circuit |
| CN110299173A (en) * | 2019-07-05 | 2019-10-01 | 合肥联诺科技有限公司 | A kind of controlled discharge module for NOR FLASH programmed process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102158076B (en) | 2015-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102158076B (en) | Charge pump output voltage regulation circuit | |
| US7372320B2 (en) | Voltage regulation with active supplemental current for output stabilization | |
| US7477092B2 (en) | Unified voltage generation apparatus with improved power efficiency | |
| US8149045B2 (en) | Variable stage charge pump and method for providing boosted output voltage | |
| US7440342B2 (en) | Unified voltage generation method with improved power efficiency | |
| CN110249283A (en) | Low-dropout regulator | |
| US20110109374A1 (en) | Dying gasp charge controller | |
| CN101667774B (en) | Closed-loop control charge pump circuit | |
| JP4365873B2 (en) | Voltage supply circuit and semiconductor memory device | |
| CN101894586B (en) | Programming voltage compensation circuit | |
| US20130241515A1 (en) | Semiconductor device | |
| CN102043417A (en) | LDO regulator, DC-DC convertor and LDO regulation method | |
| CN103236789B (en) | Charge pump output voltage regulating circuit and storage device | |
| CN101674009A (en) | Charge pump output voltage regulation circuit | |
| CN102187400A (en) | Integrated circuit device | |
| CN103856044A (en) | Charge pump circuit and output voltage automatic adjusting method | |
| US20140152378A1 (en) | Charge pump circuit | |
| CN102055311B (en) | Linear voltage-stabilized power supply device and soft start method thereof | |
| CN103312158B (en) | Boosting circuit | |
| CN109412408A (en) | A kind of charge pump circuit and its load driving method | |
| CN103107695A (en) | Charge pump circuit and memorizer | |
| CN102237788A (en) | Charge pump circuit and memory | |
| CN103219039A (en) | Programming voltage compensation circuit | |
| CN101888180B (en) | Charge pump output voltage regulation circuit | |
| CN102280127B (en) | Clock generation circuit and charge pump system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI HUAHONG GRACE SEMICONDUCTOR MANUFACTURING Free format text: FORMER OWNER: HONGLI SEMICONDUCTOR MANUFACTURE CO LTD, SHANGHAI Effective date: 20140403 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20140403 Address after: 201203 Shanghai city Zuchongzhi road Pudong New Area Zhangjiang hi tech Park No. 1399 Applicant after: Shanghai Huahong Grace Semiconductor Manufacturing Corporation Address before: Zuchongzhi road in Pudong Zhangjiang hi tech park Shanghai city Pudong New Area No. 1399 201203 Applicant before: Hongli Semiconductor Manufacture Co., Ltd., Shanghai |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |