WO2017166040A1

WO2017166040A1 - Voltage adjustment circuit and voltage adjustment method for circuit

Info

Publication number: WO2017166040A1
Application number: PCT/CN2016/077639
Authority: WO
Inventors: 唐样洋; 王新入; 张臣雄
Original assignee: 华为技术有限公司
Priority date: 2016-03-29
Filing date: 2016-03-29
Publication date: 2017-10-05
Also published as: CN108351657A; CN108351657B

Abstract

A voltage adjustment circuit and a voltage adjustment method for a circuit, relating to the field of integrated circuits. The voltage adjustment circuit comprises: a first rectifying unit (1), a second rectifying unit (2), a signal control module (3), a switch group (4) and a load (5), wherein 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 and respectively outputs the second voltage to the load (5) and the signal control module (3); and the signal control module (3) generates a switch signal based on the second voltage and outputs the switch signal to the switch group (4), so as to control charging and discharging of an equivalent capacitance of a switch in the switch group (4), thereby adjusting the second voltage. By adjusting the second voltage input to the load (5), a voltage limiting interval is reduced, and the loss in an integrated circuit is reduced.

Description

Voltage regulation circuit and circuit voltage regulation method

Technical field

The present invention relates to the field of integrated circuits, and in particular, to a voltage regulating circuit and a circuit voltage regulating method.

Background technique

With the development of semiconductor processes, the application range of integrated circuits is becoming wider and wider. Since the integrated circuit usually has uncertainty when it is used, the uncertainty refers to the uncertainty caused by the changes of various factors that affect the normal operation of the integrated circuit, for example, the uncertainty caused by the temperature change, Uncertainty caused by aging of components inside the integrated circuit. Moreover, the uncertainty of integrated circuits often brings many drawbacks to integrated circuits. For example, the uncertainty of integrated circuits can cause fluctuations in the operating voltage in integrated circuits, which may cause errors in the integrated circuit during operation. In order to ensure that the integrated circuit can work normally under uncertainty, it is necessary to adjust the operating voltage in the integrated circuit through the voltage regulating circuit.

Currently, a method of regulating the operating voltage in an integrated circuit may include a method of regulating a voltage using a linear regulator, wherein a linear regulator may be disposed inside the integrated circuit when the linear regulator is used for voltage regulation. And setting the linear regulator to be connected in series with the load inside the integrated circuit, so when the integrated circuit receives the input supply voltage, the linear regulator can divide the supply voltage, thereby enabling input to integration The voltage inside the circuit is low and the voltage is adjusted.

In the process of implementing the present invention, the inventors have found that the prior art has at least the following problems:

For the same integrated circuit, the load of the linear regulator and the supply voltage of the load are fixed in the integrated circuit. The uncertainty of the integrated circuit may cause the required operating voltage inside the integrated circuit to fluctuate according to the uncertainty. Change in degree. Therefore, in order to meet the power supply requirements of the load, the input supply voltage is usually required to be high, that is, when designing the integrated circuit, a higher voltage limit is usually set based on the normal operating voltage of the integrated circuit. Interval, the voltage limit interval can achieve adjustment of the integrated circuit supply voltage. However, in general, the higher the voltage, the greater the power consumption generated in the circuit, so the voltage limit interval usually leads to an increase in the power consumption of the circuit.

Summary of the invention

In order to reduce the power consumption in the circuit, the embodiment of the invention provides a voltage regulating circuit and a circuit voltage regulating method. The technical solution is as follows:

In a first aspect, a voltage regulating circuit is provided, the voltage regulating circuit including a first rectifying unit, a second rectifying unit, a signal control module, a switch group, and a load;

The first rectifying unit receives a supply voltage, generates a first voltage based on the 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, and outputs the second voltage to the load to provide an operating voltage for the load, and outputs the second output voltage to the signal control In the module;

The signal control module generates a switch signal based on the second voltage, and outputs the switch signal to the switch group to control charging and discharging an equivalent capacitance of a switch in the switch group, thereby The second voltage is adjusted.

After the power supply voltage passes through the first rectifying unit and the second rectifying unit, the second rectifying unit can output the second voltage to the signal control module, and therefore, when the signal control module receives the second voltage output by the second rectifying unit And generating a switch signal based on the second voltage, and outputting the switch signal to the switch group to adjust the second voltage input to the load by controlling charging and discharging the equivalent capacitance of the switch in the switch group The voltage limiting interval is reduced, thereby reducing the power consumption of the integrated circuit and improving the efficiency of voltage regulation of the voltage regulating circuit.

The input end of the first rectifying unit is connected to an external power source for supplying a power supply voltage to the voltage regulating circuit; the output end of the first rectifying unit is connected to the first end of the switch group, the first rectifying unit The output end is also connected to the input end of the second rectifying unit; the output end of the second rectifying unit is connected to the input end of the load, and the output end of the second rectifying unit is further connected to the input end of the signal control module, The output of the load is grounded; the output of the signal control module is coupled to the second end of the switch block.

With reference to the first aspect, in a first possible implementation manner of the foregoing first aspect, the signal control module includes a voltage sensor and a switch control unit;

The voltage sensor receives the second voltage output by the second rectifying unit, and outputs the control signal to the switch control unit based on the second voltage generating control signal;

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 an equivalent capacitance of a switch in the switch group, thereby The second voltage is adjusted.

The input end of the voltage sensor is connected to the output end of the second rectifying unit, and the output end of the voltage sensor is connected to the input end of the switch control unit, and the output end of the switch control unit is connected to the second end of the switch group.

In conjunction with the first aspect, in a second possible implementation of the foregoing first aspect, the first rectifying unit comprises a first diode or a first transistor.

In conjunction with the first aspect, in another possible implementation manner of the foregoing 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.

Wherein the anode of the first diode is connected to the external power source, the cathode of the first diode is connected to the first end of the switch group, and the cathode of the first diode is further connected to the cathode of the second rectifier unit The input is connected.

With reference to the first aspect, in another possible implementation manner of the foregoing first aspect, the first rectifying unit includes a first transistor;

The first transistor receives the supply voltage and outputs the first voltage to the switch group and the second rectification unit, respectively.

The gate of the first transistor is connected to the drain of the first transistor, and the gate of the first transistor and the drain of the first transistor are respectively connected to the external power source, and the source of the first transistor is The first end of the switch group is connected, and the source of the first transistor is also connected to the input end of the second rectifying unit.

In conjunction with the first aspect or the second possible implementation of the first aspect, in a third possible implementation of the foregoing first aspect, the second rectifying unit comprises a second diode or a second transistor.

In conjunction with the first aspect or the first possible implementation of the first aspect, in another possible implementation manner of the foregoing first aspect, the second rectifying unit includes a second diode;

The second diode receives a 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 to the output end of the first rectifying unit, the anode of the second diode is also connected to the first end of the switch group, and the cathode of the second diode is respectively The input of the load is connected to the input of the voltage sensor.

In conjunction with the first aspect, or the first possible implementation of the first aspect, in another possible implementation manner of the foregoing first aspect, the second rectifying unit includes a second transistor;

The second transistor receives a first voltage output by the first rectifying unit, and the second electric The pressure is output to the load and the voltage sensor.

The gate of the second transistor is connected to the drain of the second transistor, and the gate of the second transistor and the drain of the second transistor are also respectively connected to the output end of the first rectifying unit, the second The gate of the transistor and the drain of the second transistor are also respectively connected to the first end of the switch group, and the source of the second transistor is respectively connected to the input of the load and the input of the voltage sensor.

With reference to the first possible implementation of the first aspect, to any possible implementation of the third possible implementation of the first aspect, in the fourth possible implementation manner of the foregoing 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, the at least one logic gate circuit generating the switching signal based on the pulse signal and the control signal.

The output end of the signal generator is respectively connected to 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 to the output end of the voltage sensor, the at least one logic gate The output of the circuit is coupled to the second end of the switch block.

With reference to the first aspect to any possible implementation of the fourth possible implementation of the first aspect, in a fifth possible implementation manner of the foregoing first aspect, the switch group includes at least one third transistor;

The switching signal controls turn-on or turn-off of the third transistor to control charging and discharging of an equivalent capacitance 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 of the switch control unit, and the source of the at least one third transistor The drains of the poles and the at least one third transistor are also respectively connected to the input terminals of the second rectifier unit.

The second aspect provides a circuit voltage-modulating method, which is applicable to any of the possible implementation manners of the foregoing first aspect to the fourth possible implementation manner of the first aspect, wherein the method includes:

When the supply voltage is turned on, the supply voltage is rectified by the first rectifying unit to obtain the first voltage;

The first voltage is rectified by the second rectifying unit to obtain the second voltage;

When receiving the second voltage by the signal control module, based on the second voltage, The signal control module generates the switch signal;

And charging and discharging the equivalent capacitance of the switch in the switch group by the signal control module to adjust the second voltage based on the switch signal.

With reference to the second aspect, in a first possible implementation manner of the foregoing second aspect, the signal control module includes a voltage sensor and a switch control unit;

The generating, by the signal control module, the switch signal 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 switch control unit 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 foregoing 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 switch signal based on the control signal, including:

Generating a pulse signal by the signal generator;

Generating the switch signal based on the pulse signal and the control signal;

Correspondingly, the charging and discharging of the equivalent capacitance of the switch in the switch group are controlled by the signal control module to adjust the second voltage based on the switch signal, including:

And charging and discharging the equivalent capacitance of the switch in the switch group by the at least one logic gate circuit to adjust the second voltage based on the switch signal.

With the second possible implementation of the second aspect, in a third possible implementation manner of the foregoing second aspect, the switch group includes at least one third transistor;

And controlling, by the at least one logic gate circuit, charging and discharging the equivalent capacitance of the switch in the switch group to adjust the second voltage, including:

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 Charging 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, turning off the at least one third transistor based on the second level signal to The second voltage is adjusted by discharging by an equivalent capacitance of the at least one third transistor.

The technical solution provided by the embodiment of the present 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 can output the second voltage to the signal control module. Therefore, when the signal control module receives the output of the second rectifying unit At the second voltage, a switching signal can be generated based on the second voltage, and the switching signal is output to the switch group to control the voltage applied to the load by controlling charging and discharging of the equivalent capacitance of the switch in the switch group. Adjusting to reduce the voltage limit interval, thereby reducing the power consumption of the integrated circuit and improving the efficiency of voltage regulation of the voltage regulator circuit.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

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.

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 regulation method according to an embodiment of the present invention.

FIG. 8 is a flowchart of another circuit voltage regulation method according to an embodiment of the present invention.

Reference mark:

1: first rectifying unit; 2: second rectifying unit; 3: signal control module; 4: switch group;

5: load; Vdd: external power supply;

11: an input end of the first rectifying unit, 12: an output end of the first rectifying unit;

21: an input end of the second rectifying unit, 22: an output end of the second rectifying unit;

31: the input of the signal control module, 32: the output of the signal control module;

41: the first end of the switch group, 42: the second end of the switch group;

51; the input of the load, 52: the output of the load;

33: voltage sensor, 34: switch control unit;

331: input end of the voltage sensor, 332: output end of the voltage sensor, 341: input end of the switch control unit, 342: output end of the switch control unit;

D ₁ : a first diode, D ₂ : a second diode;

Q ₁ : a first transistor, Q ₂ : a second transistor;

S ₁ : the source of the first transistor, d ₁ : the drain of the first transistor, g ₁ : the gate of the first transistor, s ₂ : the source of the second transistor, d ₂ : the drain of the second transistor, g ₂ : a gate of the second transistor;

343: signal generator, 344: logic gate circuit;

a: the output of the signal generator, b: the first input of the logic gate circuit, c: the second input of the logic gate circuit, d: the output of the logic gate circuit;

Q ₃ : third transistor;

S ₃ : the source of the third transistor, d ₃ : the drain of the third transistor, and g ₃ : the gate of the third transistor.

detailed description

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

1 is a schematic structural diagram of a voltage regulating circuit according to an embodiment of the present invention. 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 the 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, and outputs a second voltage to the load 5 to provide an operating voltage for the load, and outputs the second voltage to the signal control module 3;

The signal control module 3 generates a switch signal based on the second voltage, and outputs the switch signal to the switch group 4 to control charging and discharging of the equivalent capacitance of the switch in the switch group 4, thereby adjusting the second voltage.

Since 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 rectifying unit When the second voltage is output, the switch signal can be generated based on the second voltage, and the switch signal is output to the switch group 4 to control charging and discharging of the equivalent capacitance in the switch group 5, thereby inputting to the load The second voltage is adjusted to reduce the voltage limiting interval, thereby reducing the power consumption of the integrated circuit and improving the efficiency of voltage regulation of the voltage regulating circuit.

The input end 11 of the first rectifying unit 1 is connected to an external power supply Vdd for supplying a power supply voltage to the voltage regulating circuit; the output end 12 of the first rectifying unit 1 and the first end of the switch group 4 41 is connected, the output end 12 of the first rectifying unit 1 is also connected to the second rectifying unit 2 The input end 22 of the second rectifying unit 2 is connected to the input end 51 of the load 5, and the output end 22 of the second rectifying unit 2 is also connected to the input end 31 of the signal control module 3, the load The output 52 of the 5 is grounded; the output 32 of the signal control module 3 is connected to the second end 42 of the switch block 4.

Since the input end 11 of the first rectifying unit 1 is connected to the external power supply Vdd, the output end 12 of the first rectifying unit 1 is connected to the input end 21 of the second rectifying unit 2, and therefore, when the external power supply Vdd is directed to the voltage regulating circuit When power is supplied, the power supply voltage supplied from the external power supply Vdd can pass through the first rectifying unit 1 and the second rectifying unit 2 to obtain a second voltage. Since the output end 22 of the second rectifying unit 2 is connected to the input end 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 switch based on the second voltage. The signal, and the output 32 of the signal control module 3 is connected to the second end 42 of the switch group 4, the first end 41 of the switch group 4 and the output end 12 and the second rectifying unit of the first rectifying unit 1, respectively The input terminal 21 of the second terminal is connected. Therefore, the signal control module 3 can control the 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 turned 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 can rectify the first voltage. Processing to obtain the second voltage.

It should be noted that the switch signal is used to determine whether to charge or discharge the equivalent capacitance of the switch group 4, and the switch signal includes a first level signal and a second level signal. Wherein, the first level signal is used to turn on the switch group and control to charge the equivalent capacitance of the switch in the switch group, and the second level signal is used to turn off the switch group and control the equivalent capacitance of the switch in the switch group. Discharge.

In addition, in the embodiment of the present invention, since a plurality of different loads can be simultaneously included in the integrated circuit, each load of the plurality of different loads can be respectively corresponding to one signal when the voltage adjustment of the load is performed. The control module can also make the multiple different loads correspond to one signal control module, which is not specifically limited in this embodiment of the present invention.

It should be noted that, since the voltages of the plurality of different load pairs may be the same or different, when each of the plurality of different loads respectively corresponds to one signal control module, according to a plurality of different The voltage-to-voltage requirements of the load are separately adjusted to improve the accuracy of the voltage regulation.

Referring to Figure 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, and generates a second voltage based on the second voltage The control signal is output to the switch control unit 34; the switch control unit 34 generates a switch signal based on the control signal, and outputs the switch signal to the switch group 4 to control charging of the equivalent capacitance of the switch in the switch group 4 and Discharge, thereby adjusting the second voltage input to the load 5.

The input end 331 of the voltage sensor 33 is connected to the output end 22 of the second rectifying unit 2, and the output end 332 of the voltage sensor 33 is connected to the input end 341 of the switch control unit 34. The output end 342 and the switch of the switch control unit 34 are connected. The second end 42 of the set 4 is connected.

It should be noted that, in the embodiment of the present invention, the voltage sensor 34 may receive the second voltage and generate a control signal based on the second voltage, or may acquire the voltage difference between the second voltage and the preset voltage after receiving the second voltage. The value is generated, and the control signal is generated based on the voltage difference, which is not specifically limited in the embodiment of the present invention.

It should be noted that the preset voltage may be set according to different application scenarios, which is not specifically limited in this embodiment of the present invention.

In addition, the voltage sensor 34 may generate a control signal based on the second voltage, and may generate a plurality of control signals based on the second voltage, and the method for generating the control signal by the voltage sensor 34 based on the second voltage may refer to related technologies. I will not go into details here.

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. Therefore, the voltage sensor generates a control signal based on the second voltage. It may be different, for example, the control signal may be the first signal 1 or the second signal 0, which is not specifically limited in this embodiment of the present invention.

Referring to FIG. 3, the first rectifying unit 1 includes a first diode D ₁ ;

The first diode D ₁ receives the supply voltage and outputs the first voltage to the switch group 4 and the second rectification unit 2, respectively.

Wherein the anode of the first diode D ₁ is connected to the external power supply Vdd, the cathode of the first diode D ₁ and the first terminal of the switch group 414 is connected to the first diode D ₁ The cathode is also connected to the input 21 of the second rectifying unit 2.

Incidentally, since the first diode D ₁ having a rectifying function, and therefore, when the external power supply Vdd is turned on, the supply voltage of the first diode D ₁ may be provided external power supply Vdd rectified to obtain first A voltage.

Optionally, the first rectifying unit may be a rectifying unit including the first diode D _{1 or} a rectifying unit including the first transistor Q ₁ . Referring to FIG. 4 , when the first rectifying unit 1 includes the first when the transistor Q _1, the first transistor Q ₁ receives the supply voltage, the first voltage output and the second rectifying unit 2.

Wherein the gate of the first transistor Q _1, g ₁ ₁ is connected to the drain D of the first transistor Q _1, the gate electrode of the first transistor Q _1, g ₁ and the drain D of the first transistor Q ₁ of ₁ also connected to the external power supply Vdd, the source of the first transistor Q _1, S ₁ is connected to the first terminal of the switch 515 is set, Q ₁ is a source electrode of the first transistor S ₁ and the second rectifying unit is further The input terminal 21 of 2 is connected.

Incidentally, when the gate g of the first transistor Q ₁ 'and the drain D of the first transistor ₁ ₁ is connected to Q _1', a first transistor Q ₁ can be modeled as an equivalent diode, therefore, when turned on external When the power supply voltage is supplied from the power supply Vdd, the first transistor Q1 in the first rectifying unit ₁ can rectify the supply voltage to obtain a first voltage.

Similarly, referring to FIG. 3, the second rectifying unit 2 includes a second diode D ₂ ;

The second diode D ₂ receives 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.

The anode of the second diode D ₂ is connected to the output end 12 of the first rectifying unit 1 , and the anode of the second diode D ₂ is also connected to the first end 41 of the switch group 4 . The cathode of the diode D ₂ is connected to the input 51 of the load 5 and the input 331 of the voltage sensor 33, respectively.

It should be noted that, since the second diode D ₂ has a rectifying function, when the second diode D ₂ receives the first voltage, the second diode D ₂ can be the first voltage. The rectification process is performed to obtain a second voltage.

Optionally, the second rectifying unit 2 may be a rectifying unit including the second diode D _{2 or} a rectifying unit including the second transistor Q ₂ . Referring to FIG. 4 , when the second rectifying unit 2 includes the first When the transistor Q ₂ is in the second transistor Q ₂ , the second transistor Q ₂ receives 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 gate electrode of the second transistor Q ₂ ₂ g ₂ is connected to the drain d of the second transistor Q _2, the gate electrode of the second transistor Q _2, g ₂ and the drain of the second transistor Q ₂ d ₂ 1 is also separately output terminal 12 connected to the first rectifier unit, a first end 41 of the gate electrode of the second transistor Q _2, g ₂ and the drain of the second transistor Q ₂ D _2, respectively, with the further switch group 4 Connected, the source s _{2 of} the second transistor Q ₂ is connected to the input 51 of the load 5 and the input 331 of the voltage sensor 33, respectively.

Incidentally, since the gate of the second transistor Q ₂ g _{₂ 2} d connected to the drain of the second transistor Q _2, the second transistor Q ₂ may also be equivalent to an equivalent diode, therefore, when When the second transistor Q ₂ receives the first voltage output by the first rectifying unit 1, the second transistor Q ₂ may rectify the first voltage to obtain a second voltage.

In addition, the first rectifying unit 1 may include a first diode D ₁ or a first transistor Q ₁ , and the second rectifying unit 2 may include a second diode D ₂ or a second transistor Q ₂ , and in practical applications, The first rectifying unit 1 and the second rectifying unit 2 may further include other components, which are not specifically limited in the embodiment of the present invention.

Incidentally, in the embodiment of the present invention, when the first unit 1 comprises a first rectifying diode D _1, the second rectifying unit 2 includes the second diode D _2, or, when the first When the rectifying unit 1 includes the first transistor Q ₁ , the second rectifying unit 2 includes the second transistor Q ₂ , which is not specifically limited in the embodiment of the present invention.

Referring to Figure 5, the switch control unit 34 can 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 at least one logic gate circuit 344, which generates a switching signal based on the pulse signal and the control signal.

The output end a of the signal generator 343 is respectively connected to the first input end b of the at least one logic gate circuit 44; the second input end c of the at least one logic gate circuit 44 and the output end 332 of the voltage sensor 33 Connected respectively, the output d of the at least one logic gate 344 is connected to the second end 42 of the switch block 4.

It should be noted that the signal generator 343 can generate a pulse signal, and the pulse signal can be a periodic rectangular signal, a sawtooth signal, etc., which is not specifically limited in this embodiment of the present invention.

In addition, the signal generator 343 may be a PLL (Phase Locked Loop), and may be other circuits that can generate a pulse signal, which is not specifically limited in the embodiment of the present invention.

Furthermore, at least one logic gate circuit 344 is used to generate a switching signal, and the at least one logic gate circuit 344 may be an AND gate circuit, a NAND gate circuit, etc., which is not specifically limited in this embodiment of the present invention.

It should be noted that, in the embodiment of the present invention, the logic gate circuit 344 is described by taking an AND circuit as an example in the accompanying drawings.

The output end a of the signal generator 343 is respectively connected to the first input end b of the at least one logic gate circuit 344, and the second input end c of the at least one logic gate circuit 344 is respectively connected to the output end of the voltage sensor 33. 332 is connected, and an output d of the at least one logic gate 344 is respectively connected to the second end 42 of the switch group 4, so when the signal generator 343 generates a pulse signal, the at least one logic gate 344 can be based on The pulse signal and the control signal generate a switching signal, and based on the switching signal, control charging and discharging of the equivalent capacitance of the switch in the switch group 4 to adjust the second voltage.

In addition, since the voltage sensor 33 may generate one control signal based on the second voltage, it is also possible to generate a plurality of control signals, and therefore, when the voltage sensor 33 generates a control signal, the voltage sensor may output the control signal to the at least one Each logic gate circuit 344 in the logic gate circuit 344; when the voltage sensor 33 generates a plurality of control signals, if the number of output control signals is equal to the number of the at least one logic gate circuit, the voltage sensor may The plurality of control signals are respectively output to the at least one logic gate voltage 344, and if the number of output control signals is less than the number of the at least one logic gate circuit, the voltage sensor may output the plurality of control signals to the at least one logic respectively The gate circuit 344 and the same control signal may be output to the plurality of logic gate circuits 344. That is, when the voltage sensor 33 generates a control signal, the control signals received by the at least one logic gate circuit are the same; when the voltage sensor 33 generates a plurality of control signals and the number of the plurality of control signals and the at least one When the number of logic gate circuits is equal, the at least one logic gate circuit and the control signal may have a one-to-one correspondence relationship; when the voltage sensor 33 generates a plurality of control signals and the number of the plurality of control signals is less than the at least one logic The number of the gates may be a one-to-many relationship between the control signal and the at least one logic gate circuit, which is not specifically 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 three logic gate circuits, since the number of output control signals is equal to the number of the logic gate circuits 344, Therefore, 0 of the 3 control signals can be output to one of the three logic gate circuits, and one of the three control signals can be output to the other of the three logic gate circuits 344. The logic gate circuit 344, the other one of the three control signals can be output to the last logic gate circuit 344 of the three logic gate circuits 344. If the switch control unit 34 includes six logic gate circuits 344, since the number of output control signals is smaller than the number of logic gate circuits 344, each of the three

control signals

0, 1, 1 can be They are output to two of the six logic gate circuits 344, respectively.

Referring to Figure 6, this switch group 4 may comprise at least one third transistor Q _3;

The switch signal of the third transistor Q ₃ is turned on or off to control the charge and discharge of the third transistor Q ₃ is the equivalent capacitance.

Wherein the at least one third transistor Q ₃ of the source electrode s ₃ and the drain D of the at least one third transistor Q ₃ is _{3, and} the at least one third gate of the transistor Q and g ₃ of the switch ₃ of the control unit 34 the output terminal 342 is connected to a source of at least one third transistor Q _3, a drain electrode D ₃ s and the at least one third transistor Q _3, ₃ are further connected to the input 21 to the second end of the rectifying unit 2.

It should be noted that, in the conventional transistor process, the equivalent capacitance of the transistor is the equivalent capacitance between the gate of the transistor and the source of the transistor and the equivalent capacitance between the gate of the transistor and the drain of the transistor. Deciding to connect the source of the transistor to the drain of the transistor, the equivalent capacitance between the gate and the drain will be superimposed with the equivalent capacitance between the gate and the source, thereby improving the transistor the equivalent capacitance, and therefore, the source of at least one electrode of the third transistor Q ₃ s ₃ and the drain D of the at least one third transistor Q ₃ is _{3, and} may be more easily obtain the at least one third transistor Q ₃ Large equivalent capacitance value.

Wherein, since the switch group 4 comprising at least one third transistor Q _3, and at least one third gate of the transistor Q g ₃ output to the switching unit 34 connected to the control terminal 342 _3, the at least one third transistor Q ₃ The source s ₃ and the drain d _{3 of} the at least one third transistor Q ₃ are respectively connected to the input terminal 21 of the second rectifying unit 2, and therefore, when the at least one logic gate 344 is based on the pulse signal and the control signal generating a first signal level, the switch 4 may be set based on the first level signal turns on the at least one third transistor Q _3, and at least one charge the equivalent capacitance of the third transistor Q _3; when the 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 ₃ based on the second level signal, and pass the at least one The equivalent capacitance of the three transistor Q ₃ is discharged to adjust the second voltage input to the load.

However, since the at least one third transistor Q ₃ S source electrode ₃ and the at least a drain of the third transistor Q _3, D ₃ respectively input of the second rectifying unit 2 is connected to terminal 21, the second rectifying unit 2 output 22 is also connected to the load 5 input terminal 51, and therefore, when the switch group 4, at least a third transistor Q ₃ during discharge, the at least one third transistor Q ₃ may be released through the second charge The rectifying unit 2 is input to the load 5, and the voltage input to the load is increased, that is, the second voltage is increased. When the second voltage reaches the specified voltage, the control signal generated by the voltage sensor 33 based on the second voltage may be different. At this time, at least one third transistor Q ₃ in the switch group 4 may be controlled to be charged, and when at least one third transistor Q ₃ is charged, the at least one third transistor Q ₃ does not discharge power, and then input The voltage to the load 5 may be reduced, that is, the increased second voltage may be reduced, thereby completing the adjustment of the second voltage input to the load.

Further, since the switch group 4 may comprise at least one third transistor Q _3, the switch control unit 34 may comprise at least one logic gate circuit 344, and therefore, when the third transistor switch group 4 including Q number of the switch control unit ₃ 34 When the number of the included logic gates 344 is equal, the third transistor Q ₃ and the logic gate circuit 344 are in one-to-one correspondence, and the third transistor Q ₃ included in the switch group 4 can be performed by the logic gate circuit 344 included in the switch control unit 34. One-to-one correspondence control. When the number of third transistors Q ₃ included in the switch group 4 is greater than the number of logic gate circuits 344 included in the switch control unit 34, the plurality of third transistors Q ₃ can be controlled by one logic gate circuit 344. That is, the logic gate circuit 344 included in the switch control unit 34 and the third transistor Q ₃ included in the switch group may have a one-to-one relationship or a one-to-many relationship. Make specific limits.

For example, when the switch group 4 includes four third transistors Q ₃ , the four third transistors Q ₃ may be respectively controlled by four logic gate circuits 344, or may be controlled by two logic gate circuits 344. The third transistor Q ₃ performs control, wherein one logic gate circuit 344 controls two third transistors Q ₃ , and one logic gate circuit 344 controls four third transistors Q ₃ .

It should be noted that the first transistor Q ₁ , the second transistor Q _{2 ,} and the third transistor Q ₃ according to the embodiments of the present invention may be an NMOS (N-Mental-Oxide-Semiconductor) tube. a PMOS (P-Mental-Oxide-Semiconductor) tube or a CMOS (Complementary Mental-Oxide-Semiconductor) tube, of course, may be other transistors, which is an embodiment of the present invention. No specific restrictions. In addition, the first transistor Q ₁ , the second transistor Q _{2 ,} and the third transistor Q ₃ may be the same kind of transistors or different types of transistors, which are not specifically limited in the embodiment of the present invention.

It should be noted that, since the third transistor Q ₃ 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. Similarly, the second level signals for turning off different types of transistors may be different.

For example, when the third transistor is a NMOS transistor Q ₃ so that the third transistor Q ₃ is turned on first level signal is a high level signal, so that the third transistor Q ₃ is turned off the second level signal low level signal; when the third transistor is a PMOS transistor Q ₃ so that the third transistor Q ₃ is turned on the first level signal is a low level signal, so that the third transistor Q ₃ is turned off first a two-level signal is a high level signal; when the third transistor is a CMOS transistor Q ₃ so that the third transistor Q ₃ is turned on first level signal is a high level signal, so that the third transistor Q ₃ The turned off second level signal is a low level signal.

In the embodiment of the present invention, since the input end of the first rectifying unit is connected to the external power source, the output end of the first rectifying unit is connected to the input end of the second rectifying unit, and the output end of the second rectifying unit and the voltage sensor The input terminal is connected, so that when the power supply voltage provided by the external power source is turned on, the first rectifying unit can output the first voltage to the second rectifying unit based on the power supply voltage, and when the second rectifying unit receives the first At a voltage, the second voltage can be output to the voltage transfer based on the first voltage a sensor that can generate a control signal based on the second voltage. And because the output end of the voltage sensor is connected to the input end of the switch control unit, the output end of the switch control unit is connected to the second end of the switch group, and the first end of the switch group is connected to the input end of the second rectifying unit, The output end of the second rectifying unit is also connected to the input end of the load. Therefore, the voltage sensor can output the control signal to the switch control unit, and the switch control unit can generate a switch signal based on the control signal, and the switch signal Output to the switch group to control the charging or discharging of the switch group, and when the switch group discharges, the amount of power released by the switch group can be input to the load through the second rectifying unit, thereby increasing the input to The voltage of the load; when the voltage input to the load reaches a certain voltage, the control signal generated based on the specified voltage can control the switch group to be charged to adjust the second voltage input to the load, thereby reducing the voltage The limit interval reduces the loss of the integrated circuit.

FIG. 7 is a flowchart of a method for voltage regulation of 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 turned on, the power supply voltage is rectified by the first rectifying unit to obtain the first voltage.

Step 702: The first voltage is rectified by the second rectifying unit to obtain the second voltage.

Step 703: When the second voltage is received by the signal control module, the switch signal is generated by the signal control module based on the second voltage.

Step 704: Control, according to the switch signal, charging and discharging the equivalent capacitance of the switch in the switch group by the signal control module to adjust the second voltage.

In the embodiment of the present invention, when the power supply voltage is turned on, the voltage regulating circuit receives the second voltage through the signal control module, and obtains a switching signal based on the second voltage, thereby controlling the switch by the signal control module based on the switch signal. Charging and discharging of the equivalent capacitance of the switches in the group to adjust 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;

And generating, by the signal control module, the switch signal based on the second voltage, including:

Generating a control signal by the voltage sensor based on the second voltage;

Optionally, the switch control unit includes a signal generator and at least one logic gate circuit;

And generating, by the switch control unit, a switch signal based on the control signal, including:

Generating a pulse signal by the signal generator;

Generating the switch signal based on the pulse signal and the control signal;

Correspondingly, based on the switch signal, the signal control module controls charging and discharging of the equivalent capacitance of the switch in the switch group to adjust the second voltage, including:

Based on the switching signal, charging and discharging of the equivalent capacitance of the switch in the switch group are controlled by the at least one logic gate circuit to adjust the second voltage.

Optionally, the switch group includes at least one third transistor;

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 the at least one third The equivalent capacitance of the transistor is charged;

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 pass the at least one third The equivalent capacitance of the transistor is discharged to adjust the second voltage.

The optional embodiments of the present invention may be used in any combination to form an optional embodiment of the present invention.

FIG. 8 is a flowchart of another method for voltage regulation of a circuit according to an embodiment of the present invention. Referring to FIG. 8 , the method is applied to a voltage regulating circuit, and includes:

Step 801: When the voltage regulating circuit turns on the power supply voltage, the power supply voltage provided by the external power source is rectified by the first rectifying unit to obtain a first voltage.

In the embodiment of the present invention, the first rectifying unit may include a first diode or a first transistor. When the first rectifying unit includes the first diode, since the diode has a rectifying function, when the external connection is turned on When the power supply voltage is supplied by the power source, the voltage regulating circuit can rectify the power supply voltage supplied from the external power supply through the first diode in the first rectifying unit, thereby obtaining the first voltage.

Similarly, when the first rectifying unit includes the first transistor, the gate of the first transistor and the drain of the first transistor are connected to each other, which can be equivalent to an equivalent diode. Therefore, when the external power source is turned on The first transistor in the first rectifying unit can also rectify the supply voltage provided by the external power supply to obtain the first voltage.

Step 802: The voltage regulating circuit rectifies the first voltage by using the second rectifying unit, and obtains To the second voltage.

In the embodiment of the present invention, the second rectifying unit may include a second diode or a second transistor. When the second rectifying unit includes the second diode, the diode has a rectifying function, and the first rectifying unit The output terminal is also connected to the input end of the second rectifying unit. Therefore, the voltage regulating circuit can rectify the first voltage through the second diode in the second rectifying unit to obtain the second voltage.

Similarly, when the second rectifying unit includes the second transistor, the gate of the second transistor and the drain of the second transistor are connected to each other, which can be equivalent to an equivalent diode. Therefore, the voltage regulating circuit further The first voltage may be rectified by a second transistor in the second rectifying unit to obtain a second voltage.

Step 803: When the voltage regulating circuit receives the second voltage through the signal control module, generating a switching signal by the signal control module based on the second voltage.

Wherein, since the signal control module includes a voltage sensor and a switch control unit, the voltage regulating circuit can generate a control signal by the voltage sensor based on the second voltage; and generate a switch signal by the switch control unit based on the control signal.

Ideally, the second voltage supplied to the voltage sensor should be a fixed input value, and when the voltage sensor detects the second voltage, a fixed output value can be obtained. However, due to the uncertainty of the integrated circuit, the second voltage may change, so that the output of the voltage sensing also changes. Therefore, in order to determine whether the integrated circuit is affected by the uncertainty, the voltage regulation may be adopted. A voltage sensor in the circuit detects the second voltage.

It should be noted that, in the embodiment of the present invention, the voltage sensor may receive the second voltage, generate a control signal based on the second voltage, or receive a voltage difference between the second voltage and the preset voltage, and based on the voltage difference. The control signal is generated, which is not specifically limited in this embodiment of the present invention.

The voltage sensor may generate a control signal based on the second voltage, or generate a plurality of control signals based on the second voltage, and the method for generating the control signal by the voltage sensor based on the second voltage may refer to related technologies. No specific restrictions.

It should be noted that the control signal is used to control the switch group, and the second voltage may be different when the equivalent capacitance of the switch group is charged and discharged. Therefore, the control signal generated by the voltage sensor based on the second voltage may also be For example, the control signal may be the first signal 1 or the second signal 0, which is not specifically limited in this embodiment of the present invention.

Step 804: The voltage regulating circuit controls, according to the switch signal, the charging and discharging of the equivalent capacitance of the switch in the switch group by the signal control module to adjust the second voltage input to the load.

Wherein, since the switch control unit includes a signal generator and at least one logic gate circuit, the voltage regulating circuit can generate a pulse signal by the signal generator; generate a switch signal based on the pulse signal and the control signal; And transmitting, by the at least one logic gate circuit, charging and discharging the equivalent capacitance of the switch in the switch group, thereby adjusting the second voltage.

It should be noted that the pulse signal is also used to generate the switching signal, and the pulse signal may be a periodic rectangular signal, a sawtooth signal, or the like, which is not specifically limited in the embodiment of the present invention.

In addition, since the voltage sensor may generate a control signal based on the second voltage, it is also possible to generate a plurality of control signals. Therefore, when the voltage sensor generates a control signal, the voltage sensor may output the control signal to the at least one Each logic gate circuit in the logic gate circuit; when the voltage sensor generates a plurality of control signals, if the number of output control signals is equal to the number of the at least one logic gate circuit, the voltage sensor can control the plurality of The signals are respectively output to the at least one logic gate circuit. If the number of output control signals is less than the number of the at least one logic gate circuit, the voltage sensor may output the plurality of control signals to the at least one logic gate circuit and A control signal can be output to multiple logic gates. That is, when the voltage sensor generates a control signal, the control signals received by the at least one logic gate circuit are the same; when the voltage sensor generates a plurality of control signals and the number of the plurality of control signals and the at least one logic gate When the number of circuits is equal, the at least one logic gate circuit and the control signal may have a one-to-one correspondence; when the voltage sensor generates a plurality of control signals and the number of the plurality of control signals is smaller than the at least one logic gate circuit In the case of the quantity, the control signal and the at least one logic gate circuit may have a one-to-many relationship, which is not specifically limited in the embodiment of the present invention.

For example, the voltage sensor outputs three control signals, which are 0, 1, and 1, respectively. If the switch control unit includes three logic gate circuits, since the number of output control signals is equal to the number of the logic gate circuits, One of the three control signals may be output to one of the three logic gate circuits, and one of the three control signals may be output to another logic gate of the three logic gate circuits In the circuit, the other one of the three control signals can be output to the last one of the three logic gate circuits. If the switch control unit includes six logic gate circuits, since the number of output control signals is smaller than the number of logic gate circuits 44, each of the three

control signals

0, 1, 1 can be separately output. Give two of the six logic gates.

It should also be noted that the switch signal is used to determine the equivalent capacitance of the switch group for charging and discharging, and the switch signal includes a first level signal and a second level signal. The first level signal is used to turn on the switch group and control the equivalent capacitance of the switch group for charging, and the second level signal is used to turn off the switch group and control the equivalent capacitance of the switch group to discharge.

And because 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 by at least one logic gate circuit based on the switch signal, thereby The operation of adjusting the voltage may be: 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, Charging the equivalent capacitance of the at least one third transistor; when generating the second level signal by the at least one logic gate circuit based on the pulse signal and the control signal, turning off the second level signal based on the second level signal At least one third transistor is discharged by an equivalent capacitance of the at least one third transistor to adjust the second voltage.

It should be noted that, since 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 that are turned on by different types of transistors can be different. Similarly, the second level signals that turn off different types of transistors can 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 that turns on the third transistor is a low level signal, and the second level signal that turns off the third transistor 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 at least one third transistor may be included in the switch group, at least one logic gate circuit may be included in the switch control unit, and therefore, when the number of third transistors included in the switch group is the same as the number of switch control units included The third transistor and the logic gate circuit are in one-to-one correspondence, and the third transistor included in the switch group can be controlled one-to-one by the logic gate circuit included in the switch control unit. When the number of third transistors included in the switch group is greater than the number of logic gate circuits included in the switch control unit, the plurality of third transistors can be controlled by one logic gate. That is, the logic gate circuit included in the switch control unit and the third transistor included in the switch group may have 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 includes four third transistors, the four third transistors can pass Four logic gate circuits are controlled, and the four third crystals can also be controlled by two logic gate circuits, wherein one logic gate circuit controls two third transistors, and can also be one logic gate circuit control 4 A third transistor.

In addition, since the source of the at least one third transistor and the drain of the at least one third transistor are respectively connected to the input end of the second rectifying unit, the output end of the second rectifying unit is also connected to the input end of the load, When at least one third transistor in the switch group is discharging, the amount of power released by the at least one third transistor can be input to the load after passing through the second rectifying unit, thereby increasing the voltage input to the load, that is, Yes, the second voltage is increased. When the second voltage reaches the specified voltage, the control signal generated by the voltage sensor based on the second voltage may be different. At this time, at least one third transistor in the switch group may be controlled to be charged. When the at least one third transistor Q _{3 is} being charged, the at least one third transistor does not release the power, and the voltage input to the load may be lowered, that is, the increased second voltage may be lowered, thereby completing the pair. The adjustment of the second voltage input to the load.

Further, the calculation formula for adjusting the second voltage input to the load can be expressed as:

It should be noted that V ₀ represents the second voltage, V _dd represents the supply voltage provided by the external power supply, V _drop represents the voltage _{drop of the} first rectifying unit or the second rectifying unit, and n represents the number of conduction of the third transistor in the switch group. C _g represents the total capacitance value of a single third transistor, F _c represents the frequency of the pulse signal, and R _load represents the resistance of the resistance in the load.

It can be known from the above calculation formula that the second voltage can be changed by changing the number of switch groups. Therefore, the number of switch groups can be increased by paralleling a plurality of switch groups, or by connecting the multi-stage rectifier unit and the switch group in series, and also increasing the switch group. The quantity thus changes the second voltage. Alternatively, the second voltage can be changed by changing the frequency of the pulse signal, which is not specifically limited in the embodiment of the present invention.

It should be noted that, as the first rectifying unit may include a diode or a first transistor, the second rectifying unit may include a second diode or a second transistor, and the first rectifying unit is taken as an example. When the first diode is included in the rectifying unit, the V _drop represents the voltage _{drop of} the first diode. When the first rectifying unit includes the first transistor, the V _drop represents a threshold voltage of the first transistor.

In the embodiment of the present invention, when the external power source is turned on, the power supply voltage provided by the external power source passes. After the first rectifying unit and the second rectifying unit, generating a second voltage, the voltage regulating circuit obtains a control signal based on the second voltage by the voltage sensor, and charges or discharges the switch group through the switch control unit based on the control signal Control, and when discharging through the switch group, the power discharged by the switch group can be input to the load after passing through the second rectifying unit, thereby increasing the voltage input to the load; when the voltage input to the load reaches a certain designation At the voltage, the control signal generated based on the specified voltage can control the switch group to be charged to adjust the second voltage input to the load, thereby reducing the voltage limit interval and reducing the loss of the integrated circuit.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

A voltage regulating circuit, characterized in that the voltage regulating circuit comprises a first rectifying unit, a second rectifying unit, a signal control module, a switch group and a load;

The first rectifying unit receives a supply voltage, generates a first voltage based on the 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 an operating voltage for the load, and outputs the second voltage to the signal control module in;

The signal control module generates a switch signal based on the second voltage, and outputs the switch signal to the switch group to control charging and discharging of an equivalent capacitance of a switch in the switch group, thereby The second voltage is adjusted.
The voltage regulating circuit according to claim 1, wherein said signal control module comprises a voltage sensor and a switch control unit;

The voltage sensor receives the second voltage output by the second rectifying unit, and outputs the control signal to the switch control unit based on the second voltage generating control signal;

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 an equivalent capacitance of a switch in the switch group, thereby The second voltage is adjusted.
The voltage regulator circuit of claim 1 wherein said first rectifying unit comprises a first diode or a first transistor.
A voltage regulating circuit according to claim 1 or 3, wherein said second rectifying unit comprises a second diode or a second transistor.
The voltage regulating 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, the at least one logic gate circuit generating a location based on the pulse signal and the control signal The switching signal.
The voltage regulating circuit according to any one of claims 1 to 5, wherein the switch group comprises at least one third transistor;

The switching signal controls turn-on or turn-off of the third transistor to control charging and discharging of an equivalent capacitance of the third transistor.
A circuit voltage regulating method is applied to the voltage regulating circuit according to any one of claims 1 to 6, wherein the method comprises:

When the supply voltage is turned on, the supply voltage is rectified by the first rectifying unit to obtain the first voltage;

The first voltage is rectified by the second rectifying unit to obtain the second voltage;

When the second voltage is received by the signal control module, the switch signal is generated by the signal control module based on the second voltage;

And charging and discharging the equivalent capacitance of the switch in the switch group by the signal control module to adjust the second voltage based on the switch signal.
The method of claim 7 wherein said signal control module comprises a voltage sensor and a switch control unit;

The generating, by the signal control module, the switch signal 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 switch control unit based on the control signal.
The method of claim 8 wherein said switch control unit comprises a signal generator and at least one logic gate circuit;

The generating, by the switch control unit, the switch signal based on the control signal, including:

Generating a pulse signal by the signal generator;

Generating the switch signal based on the pulse signal and the control signal;

Correspondingly, the charging and discharging of the equivalent capacitance of the switch in the switch group are controlled by the signal control module to adjust the second voltage based on the switch signal, including:

Controlling the opening of the switch group by the at least one logic gate circuit based on the switch signal The charging and discharging of the equivalent capacitor are performed to adjust the second voltage.
The method of claim 9 wherein said switch group comprises at least one third transistor;

And controlling, by the at least one logic gate circuit, charging and discharging the equivalent capacitance of the switch in the switch group to adjust the second voltage, including:

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 Charging 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, turning off the at least one third transistor based on the second level signal to The second voltage is adjusted by discharging by an equivalent capacitance of the at least one third transistor.