CN108351657A - Regulating circuit and circuit voltage regulation method - Google Patents
Regulating circuit and circuit voltage regulation method Download PDFInfo
- Publication number
- CN108351657A CN108351657A CN201680056527.3A CN201680056527A CN108351657A CN 108351657 A CN108351657 A CN 108351657A CN 201680056527 A CN201680056527 A CN 201680056527A CN 108351657 A CN108351657 A CN 108351657A
- Authority
- CN
- China
- Prior art keywords
- voltage
- signal
- transistor
- switch
- control
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Dc-Dc Converters (AREA)
Abstract
An embodiment of the present invention provides a kind of regulating circuit and circuit voltage regulation methods, are related to integrated circuit fields, which includes：First rectification unit (1), the second rectification unit (2), signal control module (3), switching group (4) and load (5)；First rectification unit (1) receives supply voltage, generates first voltage based on supply voltage, and first voltage is exported into the second rectification unit (2)；Second rectification unit (2) is based on first voltage and generates second voltage, and second voltage is exported respectively into load (5) and signal control module (3)；Signal control module (3) is based on second voltage and generates switching signal, and switching signal is exported to switching group (4), to control the charging and discharging carried out to the equivalent capacity switched in switching group (4), to which second voltage be adjusted.The second voltage of load (5) is input to by adjusting reduces the loss of integrated circuit to reduce voltage limit section.
Description
The invention relates to the field of integrated circuits, in particular to a voltage regulating circuit and a circuit voltage regulating method.
With the development of semiconductor technology, the application range of integrated circuits is wider and wider. Because an integrated circuit is usually used with uncertainty, the uncertainty refers to uncertainty caused by changes of various factors influencing the normal operation of the integrated circuit, such as uncertainty caused by temperature changes, uncertainty caused by aging of internal components of the integrated circuit, and the like. Furthermore, the uncertainty of the integrated circuit often causes many disadvantages to the integrated circuit, for example, the uncertainty of the integrated circuit may cause the working voltage in the integrated circuit to fluctuate, which may cause an error in the working process of the integrated circuit, and therefore, in order to ensure that the integrated circuit can normally work under the uncertainty, the working voltage in the integrated circuit needs to be adjusted by the voltage adjusting circuit.
At present, a method for regulating a working voltage in an integrated circuit may include a method for regulating a voltage using a linear regulator, wherein when the voltage is regulated using the linear regulator, the linear regulator may be disposed inside the integrated circuit, and the linear regulator is disposed in series with a load inside the integrated circuit.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
the load of the linear voltage regulator arranged in the integrated circuit and the supply voltage of the load are constant for the same integrated circuit, and the uncertainty of the integrated circuit can cause the required working voltage in the integrated circuit to change according to the fluctuation degree of the uncertainty. Therefore, in order to meet the power supply requirement of the load, the input power supply voltage is generally required to be higher, that is, when the integrated circuit is designed, a higher voltage limit interval is generally set on the basis of the power supply voltage for normal operation of the integrated circuit, and the voltage limit interval can realize the adjustment of the power supply voltage of the integrated circuit. However, since the power consumption of the circuit is generally increased as the voltage is increased, the power consumption of the circuit is generally increased in the voltage limit section.
Disclosure of Invention
In order to reduce power consumption in a circuit, the embodiment of the invention provides a voltage regulating circuit and a voltage regulating method of the circuit. The technical scheme is as follows:
in a first aspect, a voltage regulating circuit is provided, which includes a first rectifying unit, a second rectifying unit, a signal control module, a switch group and a load;
the first rectifying unit receives a power supply voltage, generates a first voltage based on the power supply voltage, and outputs the first voltage to the second rectifying unit;
the second rectifying unit generates a second voltage based on the first voltage, outputs the second voltage to the load to provide a working voltage for the load, and outputs the second output voltage to the signal control module;
the signal control module generates a switching signal based on the second voltage and outputs the switching signal to the switch group to control charging and discharging of an equivalent capacitor of a switch in the switch group, so that the second voltage is adjusted.
Because supply voltage passes through first rectifier cell and second rectifier cell after, this second rectifier cell can export the second voltage to signal control module, consequently, when this signal control module received the second voltage of this second rectifier cell output, can generate switching signal based on this second voltage, and export this switching signal to the switch block, charge and discharge the equivalent capacitance of switch in the switch block through control, thereby adjust the second voltage of input to the load, reduce the voltage restriction interval, thereby reduce integrated circuit's consumption, improve the efficiency of regulator circuit pressure regulating.
The input end of the first rectifying unit is connected with an external power supply, and the external power supply is used for providing power supply voltage for the voltage regulating circuit; the output end of the first rectifying unit is connected with the first end of the switch group, and the output end of the first rectifying unit is also connected with the input end of the second rectifying unit; the output end of the second rectifying unit is connected with the input end of the load, the output end of the second rectifying unit is also connected with the input end of the signal control module, and the output end of the load is grounded; the output end of the signal control module is connected with the second end of the switch group.
With reference to the first aspect, in a first possible implementation manner of the first aspect, the signal control module includes a voltage sensor and a switch control unit;
the voltage sensor receives a second voltage output by the second rectifying unit, generates a control signal based on the second voltage, and outputs the control signal to the switch control unit;
the switch control unit generates the switch signal based on the control signal, and outputs the switch signal to the switch group to control charging and discharging of equivalent capacitors of switches in the switch group, so that the second voltage is adjusted.
The input end of the voltage sensor is connected with the output end of the second rectifying unit, the output end of the voltage sensor is connected with the input end of the switch control unit, and the output end of the switch control unit is connected with the second end of the switch group.
With reference to the first aspect, in a second possible implementation manner of the first aspect, the first rectifying unit includes a first diode or a first transistor.
With reference to the first aspect, in another possible implementation manner of the first aspect, the first rectifying unit includes a first diode;
the first diode receives the supply voltage and outputs the first voltage to the switch group and the second rectifying unit respectively.
The anode of the first diode is connected with the external power supply, the cathode of the first diode is connected with the first end of the switch group, and the cathode of the first diode is also connected with the input end of the second rectifying unit.
With reference to the first aspect, in another possible implementation manner of the first aspect, the first rectifying unit includes a first transistor;
the first transistor receives the power supply voltage and outputs the first voltage to the switch group and the second rectifying unit respectively.
The grid electrode of the first transistor is connected with the drain electrode of the first transistor, the grid electrode of the first transistor and the drain electrode of the first transistor are further respectively connected with the external power supply, the source electrode of the first transistor is connected with the first end of the switch group, and the source electrode of the first transistor is further connected with the input end of the second rectifying unit.
With reference to the first aspect or the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the second rectifying unit includes a second diode or a second transistor.
With reference to the first aspect or the first possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, the second rectifying unit includes a second diode;
the second diode receives the first voltage output by the first rectifying unit and outputs the second voltage to the load and the voltage sensor respectively.
The anode of the second diode is connected with the output end of the first rectifying unit, the anode of the second diode is also connected with the first end of the switch group, and the cathode of the second diode is respectively connected with the input end of the load and the input end of the voltage sensor.
With reference to the first aspect or the first possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, the second rectifying unit includes a second transistor;
the second transistor receives the first voltage output by the first rectifying unit and outputs the second voltage to the load and the voltage sensor.
The grid electrode of the second transistor is connected with the drain electrode of the second transistor, the grid electrode of the second transistor and the drain electrode of the second transistor are further respectively connected with the output end of the first rectifying unit, the grid electrode of the second transistor and the drain electrode of the second transistor are further respectively connected with the first end of the switch group, and the source electrode of the second transistor is respectively connected with the input end of the load and the input end of the voltage sensor.
With reference to any one of the first possible implementation manner of the first aspect to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the switch control unit includes a signal generator and at least one logic gate circuit;
the signal generator generates a pulse signal and outputs the pulse signal to the at least one logic gate circuit, which generates the switching signal based on the pulse signal and the control signal.
Wherein, the output end of the signal generator is respectively connected with the first input end of the at least one logic gate circuit; the second input end of the at least one logic gate circuit is respectively connected with the output end of the voltage sensor, and the output end of the at least one logic gate circuit is connected with the second end of the switch group.
With reference to any one of the first to fourth possible implementation manners of the first aspect, in a fifth possible implementation manner of the first aspect, the switch group includes at least one third transistor;
the switch signal controls the third transistor to be turned on or off so as to control charging and discharging of an equivalent capacitor of the third transistor.
The source of the at least one third transistor is connected to the drain of the at least one third transistor, the gate of the at least one third transistor is connected to the output terminal of the switch control unit, and the source of the at least one third transistor and the drain of the at least one third transistor are also connected to the input terminal of the second rectifying unit, respectively.
In a second aspect, a circuit voltage regulation method is provided, which is applied to any one of the above first to fourth possible implementation manners of the first aspect, and is characterized by including:
when the power supply voltage is switched on, the power supply voltage is rectified through the first rectifying unit to obtain a first voltage;
rectifying the first voltage through the second rectifying unit to obtain a second voltage;
when the second voltage is received through the signal control module, generating the switching signal through the signal control module based on the second voltage;
and based on the switch signal, controlling the charging and discharging of the equivalent capacitance of the switch in the switch group through the signal control module so as to regulate the second voltage.
With reference to the second aspect, in a first possible implementation manner of the second aspect, the signal control module includes a voltage sensor and a switch control unit;
the generating, by the signal control module, the switching signal based on the second voltage includes:
generating a control signal by the voltage sensor based on the second voltage;
generating, by the switch control unit, the switching signal based on the control signal.
With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the switch control unit includes a signal generator and at least one logic gate circuit;
the generating, by the switch control unit, the switching signal based on the control signal includes:
generating a pulse signal by the signal generator;
generating the switching signal based on the pulse signal and the control signal;
correspondingly, the controlling, by the signal control module, the charging and discharging of the equivalent capacitance of the switch in the switch group based on the switch signal to adjust the second voltage includes:
based on the switching signal, controlling charging and discharging of equivalent capacitances of switches in the switch group by the at least one logic gate circuit to regulate the second voltage.
With reference to the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the switch set includes at least one third transistor;
the controlling, by the at least one logic gate circuit, charging and discharging an equivalent capacitance of a switch in the switch group based on the switch signal to regulate the second voltage includes:
when the first level signal is generated by the at least one logic gate circuit based on the pulse signal and the control signal, turning on the at least one third transistor based on the first level signal to charge an equivalent capacitance of the at least one third transistor;
when the second level signal is generated by the at least one logic gate circuit based on the pulse signal and the control signal, the at least one third transistor is turned off based on the second level signal to discharge through an equivalent capacitance of the at least one third transistor, thereby adjusting the second voltage.
The technical scheme provided by the embodiment of the invention has the beneficial effects that: in the embodiment of the present invention, after the power supply voltage passes through the first rectifying unit and the second rectifying unit, the second rectifying unit may output the second voltage to the signal control module, so that when the signal control module receives the second voltage output by the second rectifying unit, the signal control module may generate a switching signal based on the second voltage, and output the switching signal to the switch group, so as to adjust the voltage input to the load by controlling the charging and discharging of the equivalent capacitor of the switch in the switch group, thereby reducing the voltage limit interval, reducing the power consumption of the integrated circuit, and improving the efficiency of voltage regulation of the voltage regulating circuit.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a first voltage regulating circuit according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second voltage regulating circuit according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a third voltage regulating circuit according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a fourth voltage regulating circuit according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a fifth voltage regulating circuit according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a sixth voltage regulating circuit according to an embodiment of the present invention.
Fig. 7 is a flowchart of a circuit voltage regulating method according to an embodiment of the present invention.
Fig. 8 is a flowchart of another voltage regulating method for a circuit according to an embodiment of the present invention.
Reference numerals:
1: a first rectifying unit; 2: a second rectifying unit; 3: a signal control module; 4: a switch group;
5: a load; vdd: connecting an external power supply;
11: input terminal of first rectifying unit, 12: an output end of the first rectifying unit;
21: input terminal of second rectifying unit, 22: an output end of the second rectifying unit;
31: input of signal control module, 32: an output end of the signal control module;
41: first end of switch group, 42: a second terminal of the switch block;
51; input terminal of load, 52: an output terminal of the load;
33: voltage sensor, 34: a switch control unit;
331: input of voltage sensor, 332: output of voltage sensor, 341: input terminal of switch control unit, 342: an output terminal of the switch control unit;
D1: first diode, D2: a second diode;
Q1: a first transistor, Q2: a second transistor;
s1: source of the first transistor, d1: drain of the first transistor, g1: gate of the first transistor, s2: source of the second transistor, d2: drain of the second transistor, g2: a gate of the second transistor;
343: signal generator, 344: a logic gate circuit;
a: output of signal generator, b: first input of logic gate circuit, c: second input of logic gate circuit, d: an output end of the logic gate circuit;
Q3: a third transistor;
S3: source of the third transistor, d3: drain of the third transistor, g3: a gate of the third transistor.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a voltage regulating circuit provided in an embodiment of the present invention, and referring to fig. 1, the voltage regulating circuit includes a first rectifying unit 1, a second rectifying unit 2, a signal control module 3, a switch group 4, and a load 5;
the first rectifying unit 1 receives a supply voltage, generates a first voltage based on the supply voltage, and outputs the first voltage to the second rectifying unit 2;
the second rectifying unit 2 generates a second voltage based on the first voltage, outputs the second voltage to the load 5 to provide a working voltage for the load, and outputs the second voltage to the signal control module 3;
the signal control module 3 generates a switching signal based on the second voltage, and outputs the switching signal to the switch group 4 to control charging and discharging of the equivalent capacitance of the switch in the switch group 4, so as to adjust the second voltage.
Because the power supply voltage passes through the first rectifying unit 1 and the second rectifying unit 2, the second rectifying unit 2 can output the second voltage to the signal control module 3, and therefore, when the signal control module 3 receives the second voltage output by the second rectifying unit 2, the switching signal can be generated based on the second voltage and output to the switch group 4, so as to control the charging and discharging of the equivalent capacitor in the switch group 5, so that the second voltage input to the load is regulated, the voltage limiting interval is reduced, the power consumption of the integrated circuit is reduced, and the voltage regulating efficiency of the voltage regulating circuit is improved.
The input end 11 of the first rectifying unit 1 is connected with an external power supply Vdd, and the external power supply Vdd is used for providing a supply voltage for the voltage regulating circuit; the output end 12 of the first rectifying unit 1 is connected to the first end 41 of the switch group 4, and the output end 12 of the first rectifying unit 1 is also connected to the input end 21 of the second rectifying unit 2; the output end 22 of the second rectifying unit 2 is connected to the input end 51 of the load 5, the output end 22 of the second rectifying unit 2 is further connected to the input end 31 of the signal control module 3, and the output end 52 of the load 5 is grounded; the output 32 of the signal control module 3 is connected to the second terminal 42 of the switch group 4.
Since the input terminal 11 of the first rectifying unit 1 is connected to the external power supply Vdd, and the output terminal 12 of the first rectifying unit 1 is connected to the input terminal 21 of the second rectifying unit 2, when the external power supply Vdd supplies power to the voltage regulating circuit, the supply voltage provided by the external power supply Vdd can pass through the first rectifying unit 1 and the second rectifying unit 2, and then the second voltage is obtained. Since the output terminal 22 of the second rectifying unit 2 is connected to the input terminal 31 of the signal control module 3, the signal control module 3 can receive the second voltage output by the second rectifying unit 2 and generate a switching signal based on the second voltage, and since the output terminal 32 of the signal control module 3 is connected to the second terminal 42 of the switch group 4, the first terminal 41 of the switch group 4 is connected to the output terminal 12 of the first rectifying unit 1 and the input terminal 21 of the second rectifying unit 2, respectively, and therefore, the signal control module 3 can control charging and discharging of the equivalent capacitance of the switch in the switch group 4 based on the switching signal, thereby adjusting the second voltage input to the load.
When the power supply voltage is switched on, the first rectifying unit 1 can rectify the power supply voltage provided by the external power supply Vdd to obtain a first voltage; the second rectifying unit 2 may rectify the first voltage to obtain the second voltage.
It should be noted that the switching signal is used to determine whether to charge or discharge the equivalent capacitance of the switch group 4, and the switching signal includes a first level signal and a second level signal. The first level signal is used for conducting the switch group and controlling charging of the equivalent capacitance of the switch in the switch group, and the second level signal is used for switching off the switch group and controlling discharging of the equivalent capacitance of the switch in the switch group.
In addition, in the embodiment of the present invention, since the integrated circuit may include a plurality of different loads at the same time, when adjusting the voltage of the load, each of the plurality of different loads may correspond to one signal control module, or each of the plurality of different loads may correspond to one signal control module, which is not limited in this embodiment of the present invention.
It should be noted that, because the voltages required by the multiple different loads may be the same or different, when each of the multiple different loads corresponds to one signal control module, the voltage may be adjusted according to the voltage required by the multiple different loads, so as to improve the accuracy of voltage adjustment.
Referring to fig. 2, the signal control module 3 includes a voltage sensor 33 and a switch control unit 34;
the voltage sensor 33 receives the second voltage output by the second rectifying unit 2, generates a control signal based on the second voltage, and outputs the control signal to the switch control unit 34; the switch control unit 34 generates a switching signal based on the control signal, and outputs the switching signal to the switch group 4 to control charging and discharging of the equivalent capacitance of the switches in the switch group 4, thereby adjusting the second voltage input to the load 5.
The input 331 of the voltage sensor 33 is connected to the output 22 of the second rectifying unit 2, the output 332 of the voltage sensor 33 is connected to the input 341 of the switch control unit 34, and the output 342 of the switch control unit 34 is connected to the second terminal 42 of the switch group 4.
It should be noted that, in the embodiment of the present invention, the voltage sensor 34 may receive the second voltage and generate the control signal based on the second voltage, or after receiving the second voltage, obtain a voltage difference between the second voltage and a preset voltage, and generate the control signal based on the voltage difference, which is not limited in this embodiment of the present invention.
It should be further noted that the preset voltage may be set according to different application scenarios, which is not specifically limited in the embodiment of the present invention.
In addition, the voltage sensor 34 may generate one control signal based on the second voltage, or generate a plurality of control signals based on the second voltage, and a method for the voltage sensor 34 to generate the control signal based on the second voltage may refer to related technologies, which is not repeated in this embodiment of the present invention.
It should be noted that the control signal is used to control the switch group 4, and when the equivalent capacitance of the switch group 4 is charged and discharged, the second voltage may be different, and therefore, the control signal generated by the voltage sensor based on the second voltage may also be different, for example, the control signal may be the first signal 1 or the second signal 0, which is not specifically limited in the embodiment of the present invention.
Referring to fig. 3, the first rectifying unit 1 includes a first diode D1；
First diode D1Receives the supply voltage and outputs the first voltage to the switch group 4 and the second rectifying unit 2, respectively.
Wherein the first diode D1The anode of the first diode D is connected with the external power supply Vdd1Is connected to a first terminal 41 of the switch group 4, the first diode D1Is also connected to the input 21 of the second rectifying unit 2.
It should be noted that, since the first diode D1Has a rectifying function, so that when the external power supply Vdd is connected, the first diode D1The supply voltage provided by the external power supply Vdd can be rectified to obtain the first voltage.
Optionally, the first rectifying unit may include a first diode D1The rectifying unit of (1) may also include a first transistor Q1When the first rectifying unit 1 comprises a first transistor Q, see fig. 41While the first transistor Q1Receives the supply voltage and outputs the first voltage to the second rectifying unit 2.
Wherein the first transistor Q1Grid g of1And the first transistor Q1Drain electrode of (d)1Is connected to the first transistor Q1Grid g of1And the first transistor Q1Drain electrode of (d)1And the first transistor Q connected with the external power supply Vdd1Source s of1The first transistor Q is connected to the first terminal 51 of the switch group 51Source s of1And also to the input 21 of the second rectifying unit 2.
Note that, when the first transistor Q is used1Grid g of1And a first transistor Q1Drain electrode of (d)1When connected, the first transistor Q1Can be equivalent to oneAn effective diode, so that when the power supply voltage provided by the external power supply Vdd is switched on, the first transistor Q in the first rectifying unit 11The supply voltage may be rectified to obtain a first voltage.
Similarly, referring to fig. 3, the second rectifying unit 2 includes a second diode D2；
Second diode D2Receives the first voltage output from the first rectifying unit 1 and outputs the second voltage to the load 5 and the voltage sensor 33, respectively.
Wherein the second diode D2Is connected to the output 12 of the first rectifying unit 1, the second diode D2Is also connected to the first terminal 41 of the switch group 4, the second diode D2Is connected to the input 51 of the load 5 and to the input 331 of the voltage sensor 33, respectively.
It should be noted that, due to the second diode D2Having a rectifying function, so that when the second diode D is used2When receiving the first voltage, the second diode D2The first voltage may be rectified to obtain a second voltage.
Alternatively, the second rectifying unit 2 may include a second diode D2The rectifying unit of (1) may also include a second transistor Q2When the second rectifying unit 2 comprises a second transistor Q, see fig. 42While, the second transistor Q2Receives the first voltage output from the first rectifying unit 1 and outputs the second voltage to the load 5 and the voltage sensor 33.
Wherein the second transistor Q2Grid g of2And the second transistor Q2Drain electrode of (d)2Connection of the second transistor Q2Grid g of2And the second transistor Q2Drain electrode of (d)2And also respectively connected with the output end 12 of the first rectifying unit 1, the second transistor Q2Grid g of2And the second transistor Q2Drain electrode of (d)2And also respectively connected to the first terminals 41 of the switch sets 4, the second transistors Q2OfPole s2To the input 51 of the load 5 and to the input 331 of the voltage sensor 33, respectively.
Note that, the second transistor Q is used2Grid g of2And the second transistor Q2Drain electrode of (d)2Connection of the second transistor Q2Can also be equivalent to an equivalent diode, so that when the second transistor Q is used2When receiving the first voltage output by the first rectifying unit 1, the second transistor Q2The first voltage may be rectified to obtain a second voltage.
In addition, the first rectification unit 1 may include a first diode D1Or the first transistor Q1The second rectifying unit 2 may include a second diode D2Or a second transistor Q2In practical applications, the first rectifying unit 1 and the second rectifying unit 2 may further include other elements, which is not specifically limited in this embodiment of the present invention.
It should be noted that, in the embodiment of the present invention, when the first rectifying unit 1 includes the first diode D1The second rectifying unit 2 includes a second diode D2Or, when the first rectifying unit 1 includes the first transistor Q1The second rectifying unit 2 comprises a second transistor Q2The embodiment of the present invention is not particularly limited to this.
Referring to fig. 5, the switch control unit 34 may include a signal generator 343 and at least one logic gate circuit 344;
the signal generator 343 generates a pulse signal and outputs the pulse signal to the at least one logic gate circuit 344, and the at least one logic gate circuit 344 generates a switching signal based on the pulse signal and the control signal.
Wherein, the output terminal a of the signal generator 343 is connected to the first input terminal b of the at least one logic gate circuit 44, respectively; a second input c of the at least one logic gate 44 is connected to the output 332 of the voltage sensor 33, and an output d of the at least one logic gate 344 is connected to the second terminal 42 of the switch group 4.
It should be noted that the signal generator 343 may generate a pulse signal, and the pulse signal may be a periodic rectangular signal, a sawtooth signal, and the like, which is not particularly limited in the embodiment of the present invention.
In addition, the signal generator 343 may be a PLL (Phase Locked Loop), and may also be other circuits capable of generating a pulse signal, which is not specifically limited in this embodiment of the present invention.
Furthermore, the at least one logic gate 344 is used to generate a switching signal, and the at least one logic gate 344 may be an and gate, a nand gate, or the like, which is not limited in this embodiment of the present invention.
In the embodiment of the present invention, the logic gate circuit 344 is illustrated in the drawings by taking an and circuit as an example.
Since the output terminal a of the signal generator 343 is connected to the first input terminal b of at least one logic gate 344, the second input terminal c of the at least one logic gate 344 is connected to the output terminal 332 of the voltage sensor 33, and the output terminal d of the at least one logic gate 344 is connected to the second terminal 42 of the switch group 4, when the signal generator 343 generates a pulse signal, the at least one logic gate 344 can generate a switching signal based on the pulse signal and the control signal, and control the charging and discharging of the equivalent capacitors of the switches in the switch group 4 based on the switching signal to adjust the second voltage.
In addition, since the voltage sensor 33 may generate one control signal or may generate a plurality of control signals based on the second voltage, when the voltage sensor 33 generates one control signal, the voltage sensor may output the control signal to each of the at least one logic gate 344; when the voltage sensor 33 generates a plurality of control signals, the voltage sensor may output the plurality of control signals to the at least one logic gate circuit 344, respectively, if the number of output control signals is equal to the number of the at least one logic gate circuit, and the voltage sensor may output the plurality of control signals to the at least one logic gate circuit 344, respectively, and the same control signal may be output to the plurality of logic gate circuits 344, if the number of output control signals is smaller than the number of the at least one logic gate circuit. That is, when the voltage sensor 33 generates a control signal, the control signals received by the at least one logic gate circuit are all the same; when the voltage sensor 33 generates a plurality of control signals and the number of the plurality of control signals is equal to the number of the at least one logic gate circuit, there may be a one-to-one correspondence between the at least one logic gate circuit and the control signals; when the voltage sensor 33 generates a plurality of control signals and the number of the plurality of control signals is smaller than the number of the at least one logic gate circuit, the control signal and the at least one logic gate circuit may be in a one-to-many relationship, which is not particularly limited in the embodiment of the present invention.
For example, the voltage sensor outputs 33 control signals, which are 0, 1, and 1, respectively, if the switch control unit 34 includes 3 logic gate circuits, since the number of output control signals is equal to the number of the logic gate circuits 344, 0 of the 3 control signals may be output to one logic gate circuit 344 of the 3 logic gate circuits, 1 of the 3 control signals may be output to another logic gate circuit 344 of the 3 logic gate circuits 344, and 1 of the 3 control signals may be output to the last logic gate circuit 344 of the 3 logic gate circuits 344. If the switch control unit 34 includes 6 logic gate circuits 344, each of the 3 control signals 0, 1 may be respectively output to 2 logic gate circuits 44 of the 6 logic gate circuits 344 since the number of output control signals is smaller than the number of logic gate circuits 344.
Referring to fig. 6, the switch set 4 may include at least one third transistor Q3；
The switching signal controls the third transistor Q3To control the third transistor Q to be turned on or off3The equivalent capacitance of (a) to (b).
Wherein the at least one third crystalTransistor Q3Source s of3And the at least one third transistor Q3Drain electrode of (d)3Connected, the at least one third transistor Q3Grid g of3Connected to the output 342 of the switch control unit 34, the at least one third transistor Q3Source s of3And the at least one third transistor Q3Drain electrode of (d)3And also to the input terminals 21 of the second rectifying unit 2, respectively.
It should be noted that, under the conventional transistor process, since the equivalent capacitance of the transistor is determined by the equivalent capacitance between the gate and the source of the transistor and the equivalent capacitance between the gate and the drain of the transistor, the source of the transistor and the drain of the transistor are connected, and the equivalent capacitance between the gate and the drain is superimposed on the equivalent capacitance between the gate and the source, so as to increase the equivalent capacitance of the transistor, the at least one third transistor Q is used to perform the above-mentioned method3Source s of3And the at least one third transistor Q3Drain electrode of (d)3The at least one third transistor Q can be more easily obtained3A larger equivalent capacitance value.
Wherein the switch group 4 comprises at least one third transistor Q3And the at least one third transistor Q3Grid g of3Connected to the output 342 of the switch control unit 34, the at least one third transistor Q3Source s of3And the at least one third transistor Q3Drain electrode of (d)3Are respectively connected to the input terminals 21 of the second rectifying unit 2, so that, when the at least one logic gate circuit 344 generates a first level signal based on the pulse signal and the control signal, the switch group 4 may turn on the at least one third transistor Q based on the first level signal3And to the at least one third transistor Q3Charging the equivalent capacitor; when the at least one logic gate circuit 344 generates the second level signal based on the pulse signal and the control signal, the switch group may turn off the at least one third transistor Q based on the second level signal3And throughThe at least one third transistor Q3The equivalent capacitor of the load is discharged, thereby regulating the second voltage input to the load.
Wherein due to the at least one third transistor Q3Source s of3And the at least one third transistor Q3Drain electrode of (d)3Are connected to the input 21 of the second rectifying unit 2, respectively, and the output 22 of the second rectifying unit 2 is also connected to the input 51 of the load 5, so that, when at least one third transistor Q is included in the switch group 43At the time of discharging, the at least one third transistor Q3The discharged power may be input to the load 5 after passing through the second rectifying unit 2, the voltage input to the load is increased, that is, the second voltage is increased, when the second voltage reaches a specified voltage, the control signal generated by the voltage sensor 33 based on the second voltage may be different, and at this time, at least one third transistor Q in the switch group 4 may be controlled3Charging is performed while at least one third transistor Q is used3At the time of charging, the at least one third transistor Q3No electric power is discharged and thus the voltage inputted to the load 5 may be lowered, that is, the raised second voltage may be lowered, thereby completing the regulation of the second voltage inputted to the load.
In addition, since the switch set 4 may include at least one third transistor Q3The switch control unit 34 may include at least one logic gate circuit 344, and thus, when the switch group 4 includes the third transistor Q3The number of which is equal to the number of logic gate circuits 344 included in the switch control unit 34, the third transistor Q3And the logic gate circuit 344, and further, the third transistor Q included in the switch group 4 can be paired with the logic gate circuit 344 included in the switch control unit 343And performing one-to-one corresponding control. When the switch group 4 comprises a third transistor Q3Is greater than the number of logic gate circuits 344 included in the switch control unit 34, a plurality of third transistors Q can be controlled by one logic gate circuit 3443. That is, the logic gate circuit 344 included in the switch control unit 34 and the third transistor Q included in the switch group3The relationship between the first and second groups may be a one-to-one relationship or a one-to-many relationship, which is not specifically limited in the embodiment of the present invention.
For example, when the switch group 4 includes 4 third transistors Q3While, the 4 third transistors Q3The control can be performed by 4 logic gate circuits 344, or the 4 third transistors Q can be controlled by 2 logic gate circuits 3443Control is performed in which one logic gate circuit 344 controls 2 third transistors Q3It is also possible that 1 logic gate circuit 344 controls 4 third transistors Q3。
The first transistor Q according to the embodiment of the present invention1A second transistor Q2And a third transistor Q3The transistor may be an NMOS (N-Mental-Oxide-Semiconductor) transistor, a PMOS (P-Mental-Oxide-Semiconductor) transistor, or a CMOS (Complementary-Mental-Oxide-Semiconductor) transistor, or may be other transistors, which is not specifically limited in the embodiment of the present invention. In addition, the first transistor Q1A second transistor Q2And a third transistor Q3The transistors may be of the same kind or of different kinds, and this is not particularly limited in the embodiments of the present invention.
It should be noted that, since the third transistor Q is used3The transistor can be any one of NMOS transistor, PMOS transistor or CMOS transistor, and the conduction or cut-off conditions of the NMOS transistor, PMOS transistor and CMOS transistor are different, so that the first level signals for conducting different transistors can be different, and the second level signals for cutting off different transistors can be different in the same way.
For example, when the third transistor Q3When the transistor is an NMOS transistor, the third transistor Q is turned on3The first level signal is high level signal, so that the third transistor Q3The second level signal which is turned off is a low level signal; when the third transistor Q3When the third transistor Q is a PMOS transistor3First level signal of conductionFor low level signal, the third transistor Q is turned on3The second level signal which is turned off is a high level signal; when the third transistor Q3In the case of CMOS transistor, the third transistor Q is used3The first level signal is high level signal, so that the third transistor Q3The second level signal which is switched off is a low level signal.
In the embodiment of the present invention, since the input terminal of the first rectifying unit is connected to the external power supply, the output terminal of the first rectifying unit is connected to the input terminal of the second rectifying unit, and the output terminal of the second rectifying unit is connected to the input terminal of the voltage sensor, when the power supply voltage provided by the external power supply is turned on, the first rectifying unit may output the first voltage to the second rectifying unit based on the power supply voltage, and when the second rectifying unit receives the first voltage, the second rectifying unit may output the second voltage to the voltage sensor based on the first voltage, and the voltage sensor may generate the control signal based on the second voltage. The output end of the voltage sensor is connected with the input end of the switch control unit, the output end of the switch control unit is connected with the second end of the switch group, the first end of the switch group is connected with the input end of the second rectifying unit, and the output end of the second rectifying unit is also connected with the input end of the load, so that the voltage sensor can output the control signal to the switch control unit, the switch control unit can generate a switch signal based on the control signal and output the switch signal to the switch group, the charge or discharge of the switch group is controlled, and when the switch group discharges, the electric quantity released by the switch group can be input into the load after passing through the second rectifying unit, and the voltage input to the load is improved; when the voltage input to the load reaches a certain specified voltage, the control signal generated based on the specified voltage can control the switch group to charge so as to regulate the second voltage input to the load, thereby reducing the voltage limit interval and reducing the loss of the integrated circuit.
Fig. 7 is a flowchart of a voltage regulating method for a circuit according to an embodiment of the present invention, referring to fig. 7, the method is applied to a voltage regulating circuit, and the method includes:
step 701: when the power supply voltage is switched on, the first rectifying unit rectifies the power supply voltage to obtain the first voltage.
Step 702: and rectifying the first voltage through a second rectifying unit to obtain a second voltage.
Step 703: when the second voltage is received through the signal control module, the switching signal is generated through the signal control module based on the second voltage.
Step 704: based on the switch signal, the signal control module controls the charging and discharging of the equivalent capacitor of the switch in the switch group so as to adjust the second voltage.
In the embodiment of the invention, when the power supply voltage is switched on, the voltage regulating circuit receives the second voltage through the signal control module, and obtains the switching signal based on the second voltage, so that the charging and discharging of the equivalent capacitor of the switch in the switch group are controlled through the signal control module based on the switching signal to regulate the second voltage, thereby reducing the voltage limit interval and reducing the loss of the integrated circuit.
Optionally, the signal control module comprises a voltage sensor and a switch control unit;
generating the switching signal by the signal control module based on the second voltage, including:
generating a control signal by the voltage sensor based on the second voltage;
the switching signal is generated by the switching control unit based on the control signal.
Optionally, the switch control unit comprises a signal generator and at least one logic gate circuit;
generating a switching signal by the switching control unit based on the control signal, including:
generating a pulse signal by the signal generator;
generating the switching signal based on the pulse signal and the control signal;
correspondingly, based on the switch signal, the signal control module controls the charging and discharging of the equivalent capacitor of the switch in the switch group to adjust the second voltage, including:
based on the switching signal, the at least one logic gate circuit controls charging and discharging of equivalent capacitors of switches in the switch group to regulate the second voltage.
Optionally, the switch set comprises at least one third transistor;
based on the switching signal, controlling charging and discharging of equivalent capacitors of switches in the switch group through the at least one logic gate circuit to regulate the second voltage, comprising:
when the first level signal is generated by the at least one logic gate circuit based on the pulse signal and the control signal, turning on the at least one third transistor based on the first level signal to charge an equivalent capacitance of the at least one third transistor;
when the second level signal is generated by the at least one logic gate circuit based on the pulse signal and the control signal, the at least one third transistor is turned off based on the second level signal to discharge through an equivalent capacitance of the at least one third transistor, thereby adjusting the second voltage.
All the above optional technical solutions can be combined arbitrarily to form an optional embodiment of the present invention, which is not described in detail herein.
Fig. 8 is a flowchart of another voltage regulating method provided in an embodiment of the present invention, and referring to fig. 8, the method is applied to a voltage regulating circuit, and includes:
step 801: when the voltage regulating circuit is connected with the power supply voltage, the first rectifying unit is used for rectifying the power supply voltage provided by the external power supply to obtain a first voltage.
In an embodiment of the present invention, the first rectifying unit may include a first diode or a first transistor, and when the first rectifying unit includes the first diode, the diode has a rectifying function, so that when the supply voltage provided by the external power supply is switched on, the voltage regulating circuit may rectify the supply voltage provided by the external power supply through the first diode in the first rectifying unit, so as to obtain the first voltage.
Similarly, when the first rectifying unit includes the first transistor, the gate of the first transistor is connected to the drain of the first transistor, and then the first transistor is equivalent to an equivalent diode, so that when the external power supply is turned on, the first transistor in the first rectifying unit can also rectify the supply voltage provided by the external power supply, thereby obtaining the first voltage.
Step 802: the voltage regulating circuit carries out rectification processing on the first voltage through the second rectifying unit to obtain the second voltage.
In the embodiment of the present invention, the second rectifying unit may include a second diode or a second transistor, and when the second rectifying unit includes the second diode, since the diode has a rectifying function and the output terminal of the first rectifying unit is further connected to the input terminal of the second rectifying unit, the voltage regulating circuit may rectify the first voltage through the second diode in the second rectifying unit, so as to obtain the second voltage.
Similarly, when the second rectifying unit includes a second transistor, the gate of the second transistor is connected to the drain of the second transistor, and then the second transistor is equivalent to an equivalent diode, so that the voltage regulating circuit can also rectify the first voltage through the second transistor in the second rectifying unit, thereby obtaining the second voltage.
Step 803: when the voltage regulating circuit receives the second voltage through the signal control module, a switching signal is generated through the signal control module based on the second voltage.
The voltage regulating circuit can generate a control signal through the voltage sensor based on the second voltage because the signal control module comprises the voltage sensor and the switch control unit; based on the control signal, a switching signal is generated by a switching control unit.
Ideally, the second voltage supplied to the voltage sensor should be a fixed input value, and a fixed output value can be obtained when the voltage sensor senses the second voltage. However, due to the uncertainty of the integrated circuit, the second voltage may change, and thus the output of the voltage sensor may also change, and therefore, in order to determine whether the integrated circuit is affected by the uncertainty, the second voltage may be detected by the voltage sensor in the voltage regulator circuit.
It should be noted that, in the embodiment of the present invention, the voltage sensor may receive the second voltage and generate the control signal based on the second voltage, or receive a voltage difference between the second voltage and a preset voltage and generate the control signal based on the voltage difference, which is not specifically limited in this embodiment of the present invention.
It should be further noted that the preset voltage may be set according to different application scenarios, which is not specifically limited in the embodiment of the present invention.
The voltage sensor may generate one control signal based on the second voltage, or generate a plurality of control signals based on the second voltage, and a method for the voltage sensor to generate the control signal based on the second voltage may refer to related technologies, which is not specifically limited in the embodiment of the present invention.
It should be noted that the control signal is used to control the switch group, and when the equivalent capacitance of the switch group is charged and discharged, the second voltage may be different, and therefore, the control signal generated by the voltage sensor based on the second voltage may also be different, for example, the control signal may be the first signal 1 or the second signal 0, which is not specifically limited in the embodiment of the present invention.
Step 804: the voltage regulating circuit controls charging and discharging of an equivalent capacitor of a switch in the switch group through the signal control module based on the switch signal so as to regulate a second voltage input to the load.
Wherein, because the switch control unit comprises a signal generator and at least one logic gate circuit, the voltage regulating circuit can generate a pulse signal through the signal generator; generating a switching signal based on the pulse signal and the control signal; based on the switching signal, the at least one logic gate circuit controls charging and discharging of equivalent capacitors of switches in the switch group, thereby adjusting the second voltage.
It should be noted that the pulse signal is also used for generating the switching signal, and the pulse signal may be a periodic rectangular signal, a sawtooth signal, or the like, which is not particularly limited in the embodiment of the present invention.
In addition, since the voltage sensor may generate one control signal or a plurality of control signals based on the second voltage, when the voltage sensor generates one control signal, the voltage sensor may output the control signal to each of the at least one logic gate circuit; when the voltage sensor generates a plurality of control signals, the voltage sensor may output the plurality of control signals to the at least one logic gate circuit, respectively, if the number of output control signals is equal to the number of the at least one logic gate circuit, and the voltage sensor may output the plurality of control signals to the at least one logic gate circuit, respectively, and the same control signal may be output to the plurality of logic gate circuits, if the number of output control signals is smaller than the number of the at least one logic gate circuit. That is, when the voltage sensor generates a control signal, the control signals received by the at least one logic gate circuit are all the same; when the voltage sensor generates a plurality of control signals and the number of the plurality of control signals is equal to the number of the at least one logic gate circuit, the at least one logic gate circuit and the control signals may be in a one-to-one correspondence relationship; when the voltage sensor generates a plurality of control signals and the number of the plurality of control signals is smaller than the number of the at least one logic gate circuit, a one-to-many relationship may be between the control signals and the at least one logic gate circuit, which is not particularly limited in the embodiment of the present invention.
For example, the voltage sensor outputs 3 control signals, which are 0, 1, and 1, respectively, if the switch control unit includes 3 logic gate circuits, since the number of output control signals is equal to the number of the logic gate circuits, a 0 signal of the 3 control signals may be output to one logic gate circuit of the 3 logic gate circuits, a 1 signal of the 3 control signals may be output to another logic gate circuit of the 3 logic gate circuits, and another 1 signal of the 3 control signals may be output to the last logic gate circuit of the 3 logic gate circuits. If 6 logic gate circuits are included in the switch control unit, each of the 3 control signals 0, 1 may be respectively output to 2 of the 6 logic gate circuits since the number of output control signals is smaller than the number of logic gate circuits 44.
It should be further noted that the switching signal is used to determine the equivalent capacitance of the switch group for charging and discharging, and the switching signal includes a first level signal and a second level signal. The first level signal is used for conducting the switch group and controlling the equivalent capacitance of the switch group to charge, and the second level signal is used for switching off the switch group and controlling the equivalent capacitance of the switch group to discharge.
Since the switch group includes at least one third transistor, the voltage regulating circuit controls charging and discharging of the equivalent capacitance of the switch in the switch group through at least one logic gate circuit based on the switch signal, so as to regulate the second voltage, which may be: when a first level signal is generated by the at least one logic gate circuit based on the pulse signal and the control signal, turning on the at least one third transistor based on the first level signal to charge an equivalent capacitance of the at least one third transistor; when a second level signal is generated by the at least one logic gate circuit based on the pulse signal and the control signal, the at least one third transistor is turned off based on the second level signal to discharge through an equivalent capacitance of the at least one third transistor, thereby adjusting the second voltage.
It should be noted that, because the third transistor may be any one of an NMOS transistor, a PMOS transistor, or a CMOS transistor, and the on or off conditions of the NMOS transistor, the PMOS transistor, and the CMOS transistor are different, the first level signals for turning on different types of transistors may be different, and similarly, the second level signals for turning off different types of transistors may also be different.
For example, when the third transistor is an NMOS transistor, the first level signal that turns on the third transistor is a high level signal, and the second level signal that turns off the third transistor is a low level signal; when the third transistor is a PMOS transistor, the first level signal which enables the third transistor to be conducted is a low level signal, and the second level signal which enables the third transistor to be turned off is a high level signal; when the third transistor is a CMOS transistor, the first level signal that turns on the third transistor is a high level signal, and the second level signal that turns off the third transistor is a low level signal.
In addition, since the switch group may include at least one third transistor and the switch control unit may include at least one logic gate circuit, when the number of the third transistors included in the switch group is the same as the number of the switch control unit, the third transistors and the logic gate circuits are in one-to-one correspondence, and further, the third transistors included in the switch group may be controlled in one-to-one correspondence by the logic gate circuits included in the switch control unit. When the number of the third transistors included in the switch group is greater than the number of the logic gate circuits included in the switch control unit, the plurality of third transistors may be controlled by one logic gate circuit. That is, a one-to-one relationship may be between the logic gate circuit included in the switch control unit and the third transistor included in the switch group, or a one-to-many relationship may be included, which is not specifically limited in this embodiment of the present invention.
For example, when the switch group includes 4 third transistors, the 4 third transistors may be controlled by 4 logic gate circuits, or the 4 third transistors may be controlled by 2 logic gate circuits, where one logic gate circuit controls 2 third transistors, or 1 logic gate circuit controls 4 third transistors.
In addition, due to the source of the at least one third transistor and the at least one third transistorThe drains of the first and second rectifying units are respectively connected with the input end of the second rectifying unit, and the output end of the second rectifying unit is also connected with the input end of the load, so that when at least one third transistor in the switch group is discharging, the electric quantity released by the at least one third transistor can be input into the load after passing through the second rectifying unit, the voltage input into the load is increased, that is, the second voltage is increased, when the second voltage reaches a specified voltage, the control signals generated by the voltage sensor based on the second voltage may be different, at this time, the at least one third transistor in the switch group may be controlled to be charged, and when at least one third transistor Q is connected with the input end of the load3When charging is performed, the at least one third transistor may not discharge power, and thus the voltage input to the load may be reduced, that is, the increased second voltage may be reduced, so as to complete adjustment of the second voltage input to the load.
Further, the computational formula for adjusting the second voltage input to the load may be expressed as:
in addition, V is0Representing a second voltage, VddIndicating the supply voltage, V, supplied by an external power supplydropRepresenting the voltage drop of the first rectifying unit or the second rectifying unit, n representing the number of conduction of the third transistor in the switch group, CgRepresenting the total capacitance, F, of a single third transistorcRepresenting the frequency, R, of the pulse signalloadRepresenting the resistance of the resistor in the load.
As can be seen from the above calculation formula, the second voltage can be changed by changing the number of the switch groups, and therefore, the number of the switch groups can be increased by connecting a plurality of switch groups in parallel, or the number of the switch groups can be increased by connecting a plurality of multi-stage rectifying units and the switch groups in series, thereby changing the second voltage. Alternatively, the second voltage may be changed by changing the frequency of the pulse signal, which is not particularly limited in the embodiment of the present invention.
It should be noted that, since the first rectifying unit may include a diode or a first transistor, and the second rectifying unit may include a second diode or a second transistor, the first rectifying unit may perform the first rectifyingFor example, when the first rectifying unit includes a first diode, the voltage V is equal to the voltage VdropRepresenting the voltage drop of the first diode. When the first rectifying unit comprises a first transistor, V isdropRepresenting the threshold voltage of the first transistor.
In the embodiment of the invention, when the external power supply is switched on, the supply voltage provided by the external power supply passes through the first rectifying unit and the second rectifying unit to generate the second voltage, the voltage regulating circuit obtains a control signal based on the second voltage through the voltage sensor, and controls the switch group to be charged or discharged through the switch control unit based on the control signal, and when the switch group discharges, the released electric quantity can be input into the load after passing through the second rectifying unit, so that the voltage input into the load is improved; when the voltage input to the load reaches a certain specified voltage, the control signal generated based on the specified voltage can control the switch group to charge so as to regulate the second voltage input to the load, thereby reducing the voltage limit interval and reducing the loss of the integrated circuit.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
- The voltage regulating circuit is characterized by comprising a first rectifying unit, a second rectifying unit, a signal control module, a switch group and a load;the first rectifying unit receives a power supply voltage, generates a first voltage based on the power supply voltage, and respectively outputs the first voltage to the second rectifying units;the second rectifying unit generates a second voltage based on the first voltage, outputs the second voltage to the load to provide a working voltage for the load, and outputs the second voltage to the signal control module;the signal control module generates a switching signal based on the second voltage and outputs the switching signal to the switch group to control charging and discharging of equivalent capacitors of switches in the switch group, so that the second voltage is adjusted.
- The voltage regulation circuit of claim 1, wherein the signal control module comprises a voltage sensor and a switch control unit;the voltage sensor receives a second voltage output by the second rectifying unit, generates a control signal based on the second voltage, and outputs the control signal to the switch control unit;the switch control unit generates the switch signal based on the control signal, and outputs the switch signal to the switch group to control charging and discharging of equivalent capacitors of switches in the switch group, so that the second voltage is adjusted.
- The voltage regulator circuit of claim 1, wherein the first rectifying unit comprises a first diode or a first transistor.
- The voltage regulating circuit according to claim 1 or 3, wherein the second rectifying unit includes a second diode or a second transistor.
- The voltage regulator circuit according to any one of claims 2 to 4, wherein the switch control unit comprises a signal generator and at least one logic gate circuit;the signal generator generates a pulse signal and outputs the pulse signal to the at least one logic gate circuit, which generates the switching signal based on the pulse signal and the control signal.
- The voltage regulation circuit of any one of claims 1-5, wherein the switch set comprises at least one third transistor;the switch signal controls the third transistor to be turned on or off so as to control charging and discharging of an equivalent capacitor of the third transistor.
- A method for regulating voltage of a circuit, applied to a voltage regulating circuit according to any one of claims 1 to 6, the method comprising:when the power supply voltage is switched on, the power supply voltage is rectified through the first rectifying unit to obtain a first voltage;rectifying the first voltage through the second rectifying unit to obtain a second voltage;when the second voltage is received through the signal control module, generating the switching signal through the signal control module based on the second voltage;and based on the switch signal, controlling the charging and discharging of the equivalent capacitance of the switch in the switch group through the signal control module so as to regulate the second voltage.
- The method of claim 7, wherein the signal control module comprises a voltage sensor and a switch control unit;the generating, by the signal control module, the switching signal based on the second voltage includes:generating a control signal by the voltage sensor based on the second voltage;generating, by the switch control unit, the switching signal based on the control signal.
- The method of claim 8, wherein the switch control unit comprises a signal generator and at least one logic gate circuit;the generating, by the switch control unit, the switching signal based on the control signal includes:generating a pulse signal by the signal generator;generating the switching signal based on the pulse signal and the control signal;correspondingly, the controlling, by the signal control module, the charging and discharging of the equivalent capacitance of the switch in the switch group based on the switch signal to adjust the second voltage includes:based on the switching signal, controlling charging and discharging of equivalent capacitances of switches in the switch group by the at least one logic gate circuit to regulate the second voltage.
- The method of claim 9, wherein the switch bank comprises at least one third transistor;the controlling, by the at least one logic gate circuit, charging and discharging an equivalent capacitance of a switch in the switch group based on the switch signal to regulate the second voltage includes:when the first level signal is generated by the at least one logic gate circuit based on the pulse signal and the control signal, turning on the at least one third transistor based on the first level signal to charge an equivalent capacitance of the at least one third transistor;when the second level signal is generated by the at least one logic gate circuit based on the pulse signal and the control signal, the at least one third transistor is turned off based on the second level signal to discharge through an equivalent capacitance of the at least one third transistor, thereby adjusting the second voltage.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2016/077639 WO2017166040A1 (en) | 2016-03-29 | 2016-03-29 | Voltage adjustment circuit and voltage adjustment method for circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108351657A true CN108351657A (en) | 2018-07-31 |
| CN108351657B CN108351657B (en) | 2020-07-07 |
Family
ID=59963274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680056527.3A Active CN108351657B (en) | 2016-03-29 | 2016-03-29 | Voltage regulating circuit and circuit voltage regulating method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108351657B (en) |
| WO (1) | WO2017166040A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200993B (en) * | 2021-12-06 | 2023-01-17 | 中国科学院微电子研究所 | Linear voltage regulator with fast transient response and low load regulation rate |
Citations (7)
| 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 |
| CN101674010A (en) * | 2008-09-10 | 2010-03-17 | 中芯国际集成电路制造(上海)有限公司 | Voltage sampling circuit and corresponding charge pump output voltage regulation circuit |
| CN101919148A (en) * | 2008-01-15 | 2010-12-15 | 美商豪威科技股份有限公司 | Hybrid on-chip regulator for limited output high voltage |
| CN102754321A (en) * | 2009-12-01 | 2012-10-24 | 天工方案公司 | Continuously variable switched capacitor dc-dc voltage converter |
| CN103155389A (en) * | 2010-09-29 | 2013-06-12 | 联发科技（新加坡）私人有限公司 | Voltage regulator, envelope tracking power supply system, transmitter module, and integrated circuit device therefor |
| CN104049663A (en) * | 2013-03-15 | 2014-09-17 | 慧荣科技股份有限公司 | Charge injection type switched capacitor voltage stabilizer applied to high load current |
| CN105027210A (en) * | 2013-03-15 | 2015-11-04 | 高通股份有限公司 | Voltage regulator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101674009A (en) * | 2008-09-10 | 2010-03-17 | 中芯国际集成电路制造(上海)有限公司 | Charge pump output voltage regulation circuit |
| US9252660B2 (en) * | 2012-09-28 | 2016-02-02 | Analog Devices, Inc. | System and method for generating a regulated boosted voltage using a controlled variable number of charge pump circuits |
-
2016
- 2016-03-29 WO PCT/CN2016/077639 patent/WO2017166040A1/en active Application Filing
- 2016-03-29 CN CN201680056527.3A patent/CN108351657B/en active Active
Patent Citations (7)
| 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 |
| CN101919148A (en) * | 2008-01-15 | 2010-12-15 | 美商豪威科技股份有限公司 | Hybrid on-chip regulator for limited output high voltage |
| CN101674010A (en) * | 2008-09-10 | 2010-03-17 | 中芯国际集成电路制造(上海)有限公司 | Voltage sampling circuit and corresponding charge pump output voltage regulation circuit |
| CN102754321A (en) * | 2009-12-01 | 2012-10-24 | 天工方案公司 | Continuously variable switched capacitor dc-dc voltage converter |
| CN103155389A (en) * | 2010-09-29 | 2013-06-12 | 联发科技（新加坡）私人有限公司 | Voltage regulator, envelope tracking power supply system, transmitter module, and integrated circuit device therefor |
| CN104049663A (en) * | 2013-03-15 | 2014-09-17 | 慧荣科技股份有限公司 | Charge injection type switched capacitor voltage stabilizer applied to high load current |
| CN105027210A (en) * | 2013-03-15 | 2015-11-04 | 高通股份有限公司 | Voltage regulator |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017166040A1 (en) | 2017-10-05 |
| CN108351657B (en) | 2020-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9013229B2 (en) | Charge pump circuit | |
| US8258857B2 (en) | Charge pump circuits and methods | |
| US7940118B1 (en) | Dying gasp charge controller | |
| US11687107B2 (en) | Voltage regulators | |
| US20070170902A1 (en) | Power supply controller and method therefor | |
| US9680371B2 (en) | Charge pumps having variable gain and variable frequency | |
| US9154027B2 (en) | Dynamic load matching charge pump for reduced current consumption | |
| US9465395B2 (en) | Voltage generating circuit | |
| CN110703838B (en) | Voltage stabilizer with adjustable output voltage | |
| US7439792B2 (en) | High voltage generation circuit and semiconductor device having the same | |
| US20140167719A1 (en) | Voltage generation circuit | |
| US9396767B1 (en) | Voltage division circuit, circuit for controlling operation voltage and storage device | |
| CN107453599B (en) | Multi-voltage output positive-voltage charge pump | |
| CN108351657B (en) | Voltage regulating circuit and circuit voltage regulating method | |
| US11799376B2 (en) | Buck-boost circuit and control method | |
| US12013162B2 (en) | Control circuit, signal conversion circuit and control method | |
| JP6575484B2 (en) | Voltage detector | |
| US10128680B2 (en) | Constant current charging device | |
| CN214376072U (en) | Charge pump voltage stabilizing circuit and electronic device | |
| TWI570534B (en) | Low dropout regulators | |
| CN103631304B (en) | Mu balanced circuit | |
| US20200366191A1 (en) | Negative voltage generation circuit without low-dropout regulator | |
| Kim et al. | A small ripple regulated charge pump with automatic pumping control schemes | |
| US11011979B2 (en) | Booster circuit | |
| EP2264878A1 (en) | DC-DC converter with control loop |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |