CN108021175A - A kind of regulator circuit - Google Patents
A kind of regulator circuit Download PDFInfo
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- CN108021175A CN108021175A CN201711459377.3A CN201711459377A CN108021175A CN 108021175 A CN108021175 A CN 108021175A CN 201711459377 A CN201711459377 A CN 201711459377A CN 108021175 A CN108021175 A CN 108021175A
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- 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
- G05F1/625—Regulating voltage or current wherein it is irrelevant whether the variable actually regulated is ac or dc
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- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
This application discloses a kind of regulator circuit, including：Voltage regulating module, including multiple transistors, there is provided output voltage；Sampling module, connects the voltage regulating module and has the first sampling node and the second sampling node, and first sampling node and the second sampling node provide the first and second detection voltages of the output voltage respectively；Comparison module, connects the sampling module and receives the first and second detections voltage, for the more described first and second detection voltages and reference voltage, according to comparative result output control signal；And Logic control module, the comparison module and voltage regulating module are connected, for controlling the conducting quantity of transistor in the voltage regulating module according to the control signal from comparison module.The regulator circuit of the application adjusts the conducting quantity of transistor using binary system pressure regulation, be not required to external capacitor can test load voltage, peripheral cell is few, and decompression is rapid, and voltage ripple is small.
Description
Technical field
The present invention relates to semiconductor circuit technology field, relates more specifically to a kind of voltage stabilizing of the two-way counting of quick response
Circuit.
Background technology
With the continuous development of integrated circuit, regulator circuit is also widely used.Regulated power supply can be various electricity
Device equipment is powered, or chip internal is powered.Common controlling circuit of voltage regulation mainly includes linear stable, switching capacity
Formula regulator circuit, and switching power circuit.Wherein linear stable adjusts output voltage in real time using operational amplifier, can
Accurate control output voltage values, voltage ripple is small, it can be difficult to meeting big decompression needs；Switched capacitor regulator circuit, outside
It is few to enclose element, circuit is simple, but driving force is weaker, and Amplitude of Hypotensive is limited；Switching power circuit, efficient, small power consumption, electricity
Press adjusting range big, but peripheral cell is more, there are certain electromagnetic interference problem.
And current voltage-stablizer, when detection loads situation of change, common practice needs to connect big electricity in output terminal
Hold, to tackle various complicated situations.Chip cost or user cost can so be increased, and peripheral cell is more, circuit is multiple
It is miscellaneous.
The content of the invention
In view of this, it is an object of the invention to provide it is a kind of be not required plug-in capacitor quick response regulator circuit.
A kind of regulator circuit is provided according to the present invention, including：Voltage regulating module, including multiple transistors, there is provided output voltage；
Sampling module, connects the voltage regulating module and has the first sampling node and the second sampling node, first sampling node and
Second sampling node provides the first and second detection voltages of the output voltage respectively；Comparison module, connects the sampling mould
Block simultaneously receives the first and second detections voltage, and voltages and reference voltage are detected for more described first and second, according to
Comparative result output control signal；And Logic control module, the comparison module and voltage regulating module are connected, is come from for basis
The control signal of comparison module controls the conducting quantity of transistor in the voltage regulating module.
Preferably, the multiple transistor includes N row transistor in parallel, and N is the positive integer more than 1, per rowed transistor
It is connected between supply voltage and ground connection and break-make is controlled by Logic control module.
Preferably, the structure of the multiple transistor is identical, and the transistor number of each column is different, from 20Start with wait ratio be
2 number is incremented by successively to 2N-1It is a, form binary tree transistor array.
Preferably, the sample circuit includes first resistor, second resistance and the 3rd resistor of series connection, the first resistor
Be connected to the output terminal of the voltage regulating module, the 3rd resistor ground connection, the second resistance be connected to the first resistor with
Between 3rd resistor, node between the first resistor and second resistance as the first sampling node, the second resistance with
Node between 3rd resistor is as the second sampling node.
Preferably, the regulator circuit further includes：Load blocks, are connected with the output terminal of the voltage regulating module.
Preferably, the comparison module includes：First comparator, the first input end of the first comparator are connected to institute
State the first sampling node with receive it is described first detection voltage, the second input terminal input reference voltage of the first comparator,
The output terminal output first control signal of the first comparator；Second comparator, the first input end of second comparator
Second sampling node is connected to receive the second detection voltage, the second input terminal input ginseng of second comparator
Examine voltage, the output terminal output second control signal of second comparator.
Preferably, the Logic control module includes：Counting circuit, with the voltage regulating module and the first comparator and
Second comparator connects, for based on according to respectively from first comparator and the first control signal of the second comparator and second
Control signal exports Regulation Control signal, the Regulation Control signal according to count results to count to the voltage regulating module
For controlling the conducting quantity of transistor in the voltage regulating module；And clock circuit, for produce the counting circuit when
Clock control signal.
Preferably, the counting circuit is arranged to：The positive meter when first and second control signal is low level
Number, and export the Regulation Control signal for the conducting increased number for making the transistor；When first and second control signal is equal
For high level when counting in reverse, and export make the Regulation Control signal that the conducting quantity of the transistor is successively decreased.
Preferably, the multiple transistor includes N row transistor in parallel, and N is the positive integer more than 1, per rowed transistor
It is connected between supply voltage and ground connection and break-make is controlled by the Regulation Control signal of counting circuit output；And
The output terminal number of the counting circuit is identical with the transistor columns, is respectively connected to the N rowed transistors
Grid.
Preferably, the transistor includes PMOS tube.
Regulator circuit provided by the invention by partial pressure detection resistance string detect output voltage values, through comparator relatively after produce
Livelihood number circuit control signal, according to the output numerical value of counting circuit come the conducting quantity of controlling transistor PMOS, so as to regulate and control
The size of output voltage.The regulator circuit of the present invention come step motion control voltage swing, utilizes crystal with the conducting quantity of PMOS tube
The parasitic capacitance of pipe as output capacitance, be not required to external bulky capacitor can test load voltage, peripheral cell is few, driving force
By force, and decompression is rapid, and voltage ripple is minimum, and circuit power consumption is low.
Brief description of the drawings
By the description to the embodiment of the present invention referring to the drawings, above-mentioned and other purposes of the invention, feature and
Advantage will be apparent from.
Fig. 1 shows the electrical block diagram of the regulator circuit of the present invention.
Fig. 2 shows the voltage waveform view of the regulator circuit of the present invention.
Fig. 3 shows the counting circuit operation principle schematic diagram of the regulator circuit of the present invention.
Embodiment
Hereinafter reference will be made to the drawings is more fully described the present invention.In various figures, identical element is using similar attached
Icon is remembered to represent.For the sake of clarity, the various pieces in attached drawing are not necessarily to scale.In addition, it may not show in figure
Go out some known parts.
It should be appreciated that unless the context clearly requires otherwise, the otherwise " comprising " in entire disclosure and claims, " bag
Containing " etc. similar word should be construed to the implication included rather than exclusive or exhaustive implication；That is, be " including but not
Be limited to " implication.
Fig. 1 shows the electrical block diagram of the regulator circuit of the present invention.
As shown in Figure 1, regulator circuit provided in an embodiment of the present invention includes：Voltage regulating module 101, sampling module 102, compares
Module 103 and Logic control module 104.
Voltage regulating module 101 includes multiple transistors, there is provided output voltage Vout；Sampling module 102 connects voltage regulating module 101,
And provided respectively with the first sampling node Q1 and the second sampling node Q2, the first sampling node Q1 and the second sampling node Q2 defeated
Go out voltage VoutThe first and second detection voltage DIV_HIGH and DIV_LOW；Comparison module 103 connects sampling module 101 and connects
Receive first and second detection voltage DIV_HIGH and DIV_LOW, for compare the first and second detection voltage DIV_HIGH and
DIV_LOW and reference voltage VREF, according to comparative result output control signal COMP_HIGH and COMP_LOW；And logic control
Molding block 104, connects comparison module 103 and voltage regulating module 101, for according to the control signal COMP_ from comparison module
HIGH and COMP_LOW controls the conducting quantity of transistor in voltage regulating module 101.Specifically, 104 basis of Logic control module
Control signal COMP_HIGH and COMP_LOW export binary system Regulation Control signal CTL1 to CTLN, and the connection of voltage regulating module 101 is patrolled
Collect control module 104 and receive two-stage system Regulation Control signal CTL1 to CTLN, with the conducting quantity of controlling transistor, adjust defeated
Go out voltage Vout。
Specifically connection and function are as follows for each module：
Multiple transistors of voltage regulating module 101 include N row transistor in parallel, and N is the positive integer more than 1, each column crystal
Pipe is connected between supply voltage and ground connection and controls break-make by Logic control module 104.N row multiple transistors in parallel
Each transistor structure it is identical, but the transistor number of each column is different, and first row to Nth column transistor size is from 20Start
It is more incremented by successively than the number for 2 to 2 to waitN-1It is a, form binary tree transistor array.The transistor size of each column is represented with M,
Then from first row to Nth column, M=1, M=2 ... ... M=2N-2, M=2N-1。
Sampling module 102 includes the first resistor R1, second resistance R2 and 3rd resistor R3 by connecting, for output electricity
Press VoutPartial pressure detection is carried out, wherein first resistor R1 is connected to the output terminal of voltage regulating module 101, and 3rd resistor R3 is grounded, and second
Resistance R2 is connected between first resistor R1 and 3rd resistor R3, and the node between first resistor R1 and second resistance R2 is as
One sampling node Q1, the node between second resistance R2 and 3rd resistor R3 is as the second sampling node Q2.
The regulator circuit of the present embodiment further includes load blocks, i.e. constant-current source Iload, connect with the output terminal of voltage regulating module 101
Connect.The drain electrode of multiple transistors of voltage regulating module 101 meets detection resistance R1 to R3 and load constant current source Iload, produce output voltage
Vout, output voltage V is gathered in sampling module 102out, and two sampling nodes Q1 and Q2 are chosen on detection resistance string, warp
Cross electric resistance partial pressure and produce the first detection voltage DIV_HIGH and the second detection voltage DIV_LOW, the part as comparison module 103
Input signal.
Comparison module 103 includes：First comparator U1 and the second comparator U2.The first input end of first comparator U1
(normal phase input end) is connected to the first sampling node Q1 between first resistor R1 and second resistance R2, receives the first detection voltage
The second input terminal (negative-phase input) input reference voltage VREF of DIV_HIGH, first comparator U1, first comparator it is defeated
Outlet output first control signal COMP_HIGH；The first input end (normal phase input end) of second comparator U2 is connected to second
The second sampling node Q2 between resistance R2 and 3rd resistor R3, receives the second detection voltage DIV_LOW, the second comparator U2's
The output terminal output second control signal of second input terminal (negative-phase input) input reference voltage VREF, the second comparator U2
COMP_LOW.First detection voltage DIV_HIGH and the second detection voltage DIV_LOW come from sampling module 102, reference voltage
In addition VREF is set, input to two comparators.
According to the operation principle of comparator, first comparator U1 detects voltage DIV_HIGH and reference voltage VREF by first
It is compared, when reference voltage VREF is less than the first detection voltage DIV_HIGH, low level is exported, when reference voltage VREF is big
When the first detection voltage DIV_HIGH, high level is exported.Second comparator U2 is identical with first comparator U1 principles, by second
Voltage DIV_LOW is detected compared with reference voltage VREF, when reference voltage VREF is less than the second detection voltage, output is low
Level, when reference voltage VREF is more than second voltage detection DIV_LOW, exports high level.
Logic control module 104 includes：Counting circuit 142, compared with voltage regulating module 101 and first comparator U1 and second
Device U2 connections, for based on according to the first control signal COMP_ respectively from first comparator U1 and the second comparator U2
HIGH and second control signal COMP_LOW exports binary system pressure regulation control according to count results to count to voltage regulating module 101
Signal CTL1 to CTLN processed, Regulation Control signal CTL1 to CTLN are used for the conducting quantity for controlling transistor in voltage regulating module 101.
And clock circuit 141, the clock control signal of generation counting circuit 142.Clock circuit 141, which produces, in the present embodiment counts electricity
The clock control signal on road 142, counting circuit 142 are counted under clock signal control.Counting circuit 142 is two-way counting
Circuit, i.e., both can also counting in reverse with counting forward.
Two-way counting circuit, the output terminal for two comparators that its 3 input terminals are respectively connected to comparison module 103 are timely
The binary system Regulation Control signal such as the output terminal of clock circuit 141, CTL1, CTL2 ... CTLN of its N number of output terminal connects respectively
To the grid of the transistor of voltage regulating module 101, corresponding transistor turns are controlled.The comparison module received according to input terminal
First and second counting controling signal COMP_HIGH and COMP_LOW of 103 output terminals output, are receiving clock circuit 141
Counting forward or counting in reverse are carried out at the time of the rising edge clock of output arrives.
Preferably, counting circuit 142 is arranged to：When the first and second control signal COMP_HIGH and COMP_LOW are
During low level, under clock control signal effect, 142 counting forward of counting circuit, and exporting passs the conducting quantity of transistor
The Regulation Control signal of increasing, makes the output voltage of voltage regulating module 101 increase；As the first and second control signal COMP_HIGH and
When COMP_LOW is high level, under clock control signal effect, 142 counting in reverse of counting circuit, and output makes transistor
The Regulation Control signal that successively decreases of conducting quantity, the output voltage of voltage regulating module 101 reduces.When the first and second tally controls are believed
When number COMP_HIGH and COMP_LOW is respectively high level and low level, counting circuit 142 is in hold mode, voltage regulating module
101 output voltage is constant.
Multiple transistors include N row transistor in parallel, and N is the positive integer more than 1, and each column strings of transistors is associated in power supply electricity
The Regulation Control signal exported between ground connection and by counting circuit 142 is pressed to control break-make；And counting circuit 142 is defeated
Outlet number is identical with transistor columns, and the output terminal of counting circuit 142 is respectively connected to the grid of N rowed transistors.Specifically,
First binary system Regulation Control signal CTL1 is correspondingly connected to the grid of each transistor in the first rowed transistor；Second binary system
Regulation Control signal CTL2 is correspondingly connected to the grid of each transistor in the second rowed transistor；Similarly, N binary systems pressure regulation control
Signal CTLN processed is correspondingly connected to the grid of each transistor in Nth column transistor.When the count value of counting circuit 142 increases successively
When big, PMOS tube conducting quantity increases successively, the output voltage V of voltage regulating module 101outIt is incremented by successively；When counting circuit 142
When count value is sequentially reduced, PMOS tube conducting quantity reduces, the output voltage V of voltage regulating module 101outSuccessively decrease successively；It is electric when counting
When the count value on road 142 is constant, PMOS tube conducting quantity is constant, the output voltage V of voltage regulating module 101outIt is constant.With 4 row crystal
Illustrate exemplified by pipe, when the first detection voltage DIV_HIGH and the second detection voltage DIV_LOW is below reference voltage VREF, say
Bright output voltage is relatively low, and counting circuit 142 carries out counting forward.With counting circuit 142 output signal initial value CTL4,
CTL3, CTL2, CTL1 are respectively to illustrate exemplified by 0001, and PMOS transistor at this time opens the quantity that quantity is first row, and 1
A, counting forward starts, and counting circuit 142 exports signal CTL4, CTL3, CTL2, CTL1 and is incremented by 0010, then secondary series crystal
Pipe turns on, and quantity 2, CTL4, CTL3, CTL2, CTL1 are incremented by 0011, and first row and the second rowed transistor are both turned on, quantity
For 3 ... ... when CTL4, CTL3, CTL2, CTL1 are incremented by 1010, secondary series and the conducting of the 4th rowed transistor, quantity 10；Instead
It is similar to this process to counting, repeat no more, the columns N of transistor can be arranged as required to.
Preferably, transistor includes PMOS tube.I.e. the 1st of binary tree transistor array is classified as P1, and the 1, the 2nd is classified as P2,1,
P2,2 ... ... n-th row Pn, 1, Pn, 2, Pn, 3 ... Pn, n, the transistor of each row are connected in series, but the crystal of different lines
Pipe is connected in parallel, and source electrode access input voltage VCC_EX, different magnitudes of voltage is exported from drain electrode, for passing through different PMOS tube
On or off, controls output voltage Vout, keeps it in certain voltage range.Here PMOS tube plays constant-current source
Effect, PMOS tube conducting quantity it is more, the output voltage Vout for the output that drains is higher.
The circuit course of work of the present invention is that binary system Regulation Control signal CTL1 to CTLN is connected to voltage regulating module 101
The grid end of each transistor PMOS, control output voltage VoutSize, 102 partial pressure detection resistance string R1 to R3 of sampling module detection
Output voltage VoutSize and partial pressure, the first sampling node Q1 and the second sampling node Q2 at provide first detect voltage
The detection voltage DIV_LOW of DIV_HIGH and second, and will by the first comparator U1 of comparison module 103, the second comparator U2
First detection voltage DIV_HIGH and the second detection voltage DIV_LOW are compared with reference voltage VREF, according to four drawn
Kind of comparative result, counting circuit 142 carry out counting forward, counting in reverse or without counting, so as to export different Regulation Controls
Signal, controlling transistor conducting quantity, so as to adjust output voltage Vout.Detection process is quickly carried out with pressure regulation process, output electricity
Press VoutNot in voltage stabilized range, it will be adjusted, since digital voltage regulation process is simply efficient, so may finally realize fast
Fast voltage stabilizing.
Regulator circuit provided by the invention, is the binary system voltage-regulation voltage-stabilization circuit based on two-way tally control, passes through partial pressure
Detection resistance string detects output voltage values, is compared by comparator, the counting controling signal of two-way counting circuit is produced, according to meter
The binary system output numerical value of number circuit carrys out the conducting quantity of controlling transistor PMOS, so as to regulate and control the size of output voltage；Utilize
Binary system pressure regulation, can be rapidly by output voltage control in a less section, and can adjust output voltage size in time；Drive
Kinetic force is strong, and Amplitude of Hypotensive is big, low in energy consumption.
Fig. 2 shows the voltage waveform view of the regulator circuit of the present invention.
The process of the binary system voltage-regulation voltage-stabilization of the present embodiment circuit has been noted above in Fig. 1, which is not described herein again.This figure is
A bit of oscillogram during pressure regulation, ordinate are voltage Voltage, and abscissa is time Time, pass through the first detection electricity
DIV_HIGH is pressed, the relation of the second detection voltage DIV_LOW and reference voltage VREF illustrates output voltage VoutChange
Journey.
As shown in the figure, when starting, counting circuit carries out counting in reverse, output voltage VoutReduce, so the first detection voltage
The detections of DIV_HIGH and second voltage DIV_LOW is gradually reduced, and reference voltage VREF is constant voltage, is remained unchanged；Work as output
Voltage VoutWhen being reduced to the T1 moment, the first detection voltage DIV_HIGH and the second detection voltage DIV_LOW are below reference voltage
VREF, counting circuit carry out counting forward, output voltage VoutIncrease, so the first detection voltage DIV_HIGH and the second detection
Voltage DIV_LOW gradually increases, and reference voltage VREF is constant voltage, is remained unchanged；As output voltage VoutIncrease to the T2 moment
When, the first detection voltage DIV_HIGH and the second detection voltage DIV_LOW are above reference voltage VREF, counting circuit again into
Row counting in reverse, output voltage VoutReduce, so the first detection voltage DIV_HIGH and the second detection voltage DIV_LOW are gradual
Reduce, reference voltage VREF is constant voltage, is remained unchanged；As output voltage VoutWhen being reduced to the T3 moment, the first detection voltage
DIV_HIGH is more than reference voltage VREF, the second detection voltage DIV_LOW and is less than reference voltage VREF, and counting circuit stops meter
Number, output voltage VoutStablize, the first detection voltage DIV_HIGH, the second detection voltage DIV_LOW, reference voltage VREF, exports
Voltage VoutAll reach stable state, and output voltage V at this timeoutOutput voltage Vout when comparing beginning is reduced very
It is more.As can be seen from Figure, output voltage VoutFor maximum fluctuation scope within 100mV, voltage fluctuation is minimum, and pressure regulation is rapid.
Regulator circuit provided by the invention, is binary system voltage-regulation voltage-stabilization circuit, is detected and exported by partial pressure detection resistance string
Magnitude of voltage, by comparator relatively after produce counting controling signal, crystalline substance is controlled according to the binary system output numerical value of counting circuit
The conducting quantity of body pipe PMOS, so as to regulate and control the size of output voltage；Can be less at one by output voltage control rapidly
Section, and voltage fluctuation is smaller, adjusting process is quick, and decompression is stablized.
Fig. 3 shows the counting circuit operation principle schematic diagram of the regulator circuit of the present invention.
From Fig. 1 and Fig. 2, the different output output control counting circuits of two comparators are counted, and generation is used for
The different pressure regulation signals of controlling transistor.
With reference to Fig. 1 to Fig. 3, sampling module 102 is through partial pressure detection resistance string R1 to R3 detection output voltages VoutSize simultaneously
Partial pressure, you can well imagine for the first detection voltage DIV_HIGH and the second detection in the first sampling node Q1 and the second sampling node Q2 punishment
Voltage DIV_LOW, and voltage DIV_ is detected by first by the first comparator U1 of comparison module 103, the second comparator U2
Voltage DIV_LOW is compared with reference voltage VREF for the detections of HIGH and second, as the first detection voltage DIV_HIGH and second
When detection voltage DIV_LOW is below reference voltage VREF, output voltage V is representedoutLess than voltage stabilized range, first comparator U1
COMP_HIGH and COMP_LOW points of low level, i.e. first control signal and second control signal are exported with the second comparator U2
Not Wei 0,0, produce counting forward signal, control counting circuit 142 carry out counting forward, controlling transistor PMOS drain electrode output
Magnitude of voltage raises successively；When the first detection voltage DIV_HIGH and the second detection voltage DIV_LOW are above reference voltage VREF
When, represent output voltage VoutHigher than voltage stabilized range, first comparator U1 and the second comparator U2 export high level, i.e., first
Control signal and second control signal COMP_HIGH and COMP_LOW are respectively 1,1, produce counting in reverse signal, counting circuit
142 carry out counting in reverse, and the drain electrode output voltage values of controlling transistor PMOS reduce successively；As the first detection voltage DIV_HIGH
Higher than reference voltage VREF, the second detection voltage DIV_LOW is less than reference voltage VREF, represents output voltage VoutIn voltage stabilizing
Scope, first comparator U1 output high level, the second comparator U2 output low level, i.e. first control signal COMP_HIGH with
Second control signal COMP_LOW is respectively 1,0, counting circuit 142 without counting, by output voltage VoutStablize set steady
Between pressure area；When the first detection voltage DIV_HIGH is higher than reference voltage less than reference voltage VREF, the second detection voltage DIV_LOW
VREF, i.e. first control signal COMP_HIGH and second control signal COMP_LOW are respectively 0,1, and circuit is in improper work
Make state.
In conclusion regulator circuit provided in an embodiment of the present invention, is the binary stepped tune based on two-way tally control
Regulator circuit is pressed, is not required to external big electric capacity of voltage regulation C, peripheral cell is less, reduces peripheral circuit area；Detected by partial pressure
Resistance string detects output voltage values, is compared by comparator, produces the counting controling signal of two-way counting circuit, two-way counting electricity
Road carries out counting forward, and counting in reverse or stopping count, according to the binary system output numerical value of counting circuit come controlling transistor
The conducting quantity of PMOS, so as to regulate and control the size of output voltage；Output capacitance is used as by the use of the parasitic capacitance of transistor, it is not necessary to
Analog-to-digital conversion, can be rapidly by decompression stationary value control in a less voltage range, and can monitor in real time, adjustment in time
Output voltage size；With big driving force, minimum voltage ripple, big Amplitude of Hypotensive, and there is control circuit power consumption
Low, the advantages of peripheral cell is few, add the reliability of circuit.
In the description of the present invention, it is to be understood that term " first ", " second " etc. are only used for description purpose, without
It is understood that to indicate or implying relative importance.In addition, in the description of the present invention, unless otherwise indicated, the implication of " multiple "
It is two or more；" known ", " fixation ", " given " and " predetermined " under normal conditions, refers to a value, quantity, ginseng
Number, constraints, condition, state, flow, process, method, implementation, or various combinations etc. are variable in theory, but such as
Fruit sets in advance, then is to maintain in follow-up use constant.
According to the embodiment of the present invention as described above, these embodiments do not have all details of detailed descriptionthe, not yet
It is only the specific embodiment to limit the invention.Obviously, as described above, can make many modifications and variations.This explanation
Book is chosen and specifically describes these embodiments, is in order to preferably explain the principle of the present invention and practical application, so that affiliated
Technical field technical staff can be used using modification of the invention and on the basis of the present invention well.The present invention is only by right
The limitation of claim and its four corner and equivalent.
Claims (10)
1. a kind of regulator circuit, wherein, including：
Voltage regulating module, including multiple transistors, there is provided output voltage；
Sampling module, connects the voltage regulating module and has the first sampling node and the second sampling node, the first sampling section
Point and the second sampling node provide the first and second detection voltages of the output voltage respectively；
Comparison module, connects the sampling module and receives the first and second detections voltage, for first He
Second detection voltage and reference voltage, according to comparative result output control signal；And
Logic control module, connects the comparison module and voltage regulating module, for according to the control signal from comparison module come
Control the conducting quantity of transistor in the voltage regulating module.
2. regulator circuit according to claim 1, wherein, the multiple transistor includes N row transistor in parallel, and N is
Positive integer more than 1, each column strings of transistors are associated between supply voltage and ground connection and control break-make by Logic control module.
3. regulator circuit according to claim 2, wherein, the structure of the multiple transistor is identical, the transistor of each column
Number is different, from 20Start more incremented by successively than the number for 2 to 2 to waitN-1It is a, form binary tree transistor array.
4. regulator circuit according to claim 1, wherein, the sample circuit includes the first resistor of series connection, the second electricity
Resistance and 3rd resistor, the first resistor are connected to the output terminal of the voltage regulating module, and the 3rd resistor is grounded, and described second
Resistance is connected between the first resistor and 3rd resistor, and the node between the first resistor and second resistance is as first
Sampling node, the node between the second resistance and 3rd resistor is as the second sampling node.
5. regulator circuit according to claim 4, wherein, further include：Load blocks, the output terminal with the voltage regulating module
Connection.
6. regulator circuit according to claim 1, wherein, the comparison module includes：
First comparator, the first input end of the first comparator are connected to first sampling node to receive described first
Detect voltage, the second input terminal input reference voltage of the first comparator, the output terminal output the of the first comparator
One control signal；
Second comparator, the first input end of second comparator are connected to second sampling node to receive described second
Detect voltage, the second input terminal input reference voltage of second comparator, the output terminal output the of second comparator
Two control signals.
7. regulator circuit according to claim 6, wherein, the Logic control module includes：
Counting circuit, is connected with the voltage regulating module and the first comparator and the second comparator, for based on according to respectively
First control signal and second control signal from first comparator and the second comparator count, and according to count results to
The voltage regulating module exports Regulation Control signal, and the Regulation Control signal is used to control leading for transistor in the voltage regulating module
Logical quantity；And
Clock circuit, for producing the clock control signal of the counting circuit.
8. regulator circuit according to claim 7, wherein, the counting circuit is arranged to：
The counting forward when first and second control signal is low level, and export the conducting quantity for making the transistor
Incremental Regulation Control signal；
The counting in reverse when first and second control signal is high level, and export the conducting quantity for making the transistor
The Regulation Control signal to successively decrease.
9. regulator circuit according to claim 8, wherein,
The multiple transistor includes N row transistor in parallel, and N is the positive integer more than 1, and each column strings of transistors is associated in power supply electricity
Break-make is controlled between pressure and ground connection and by the Regulation Control signal of counting circuit output；And
The output terminal number of the counting circuit is identical with the transistor columns, is respectively connected to the grid of the N rowed transistors
Pole.
10. regulator circuit according to claim 1, wherein, the transistor includes PMOS tube.
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|---|---|---|---|
| CN201711459377.3A CN108021175A (en) | 2017-12-28 | 2017-12-28 | A kind of regulator circuit |
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| CN201711459377.3A CN108021175A (en) | 2017-12-28 | 2017-12-28 | A kind of regulator circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020048420A1 (en) * | 2018-09-04 | 2020-03-12 | 京东方科技集团股份有限公司 | Digital voltage regulator and voltage regulating method thereof |
| CN116719384A (en) * | 2023-08-07 | 2023-09-08 | 深圳市思远半导体有限公司 | Detection control circuit and switching circuit |
-
2017
- 2017-12-28 CN CN201711459377.3A patent/CN108021175A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020048420A1 (en) * | 2018-09-04 | 2020-03-12 | 京东方科技集团股份有限公司 | Digital voltage regulator and voltage regulating method thereof |
| US11507122B2 (en) | 2018-09-04 | 2022-11-22 | Hefei Xinsheng Optoelectronics Technology Co., Ltd. | Digital voltage regulator with a first voltage regulator controller and a second voltage regulator controller and method of regulating voltage |
| CN116719384A (en) * | 2023-08-07 | 2023-09-08 | 深圳市思远半导体有限公司 | Detection control circuit and switching circuit |
| CN116719384B (en) * | 2023-08-07 | 2023-12-15 | 深圳市思远半导体有限公司 | Detection control circuit and switching circuit |
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Address after: Unit a1005-1007, block a, pioneering building, Tsinghua Science Park, 101 University Road, Tangjiawan Town, Zhuhai City, Guangdong Province, 519080 Applicant after: Zhuhai Boya Technology Co.,Ltd. Address before: Unit a1005-1007, block a, pioneering building, Tsinghua Science Park, 101 University Road, Tangjiawan Town, Zhuhai City, Guangdong Province, 519080 Applicant before: ZHUHAI BOYA TECHNOLOGY Co.,Ltd. |
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