CN106094959A - Linear voltage-stabilizing circuit - Google Patents
Linear voltage-stabilizing circuit Download PDFInfo
- Publication number
- CN106094959A CN106094959A CN201610460171.1A CN201610460171A CN106094959A CN 106094959 A CN106094959 A CN 106094959A CN 201610460171 A CN201610460171 A CN 201610460171A CN 106094959 A CN106094959 A CN 106094959A
- Authority
- CN
- China
- Prior art keywords
- voltage
- control circuit
- linear
- power
- feeder ear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
Abstract
The invention discloses a kind of linear voltage-stabilizing circuit, including linear power dioxde and driving control circuit thereof, described linear power dioxde receives input voltage, by driving control circuit linear adjustment power tube, and the output voltage preset with output；Described linear power dioxde includes the first power end, the second power end and controls end, described driving control circuit includes feeder ear, drive end, the first end and the second end, described feeder ear is connected with one end of input voltage, the voltage of feeder ear is clamped to supply voltage, and described supply voltage is less than input voltage；Described drive end is connected with the control end of linear power dioxde, and the first end of described driving control circuit and the second end are connected with the first power end and second power end of described linear power dioxde respectively.In the present invention, the voltage driving control circuit to be born can be less than the input of linear voltage stabilization or output voltage.
Description
Technical field
The present invention relates to electric and electronic technical field, be specifically related to a kind of linear voltage-stabilizing circuit.
Background technology
As its name suggests, linear voltage-stabilizing circuit plays pressure stabilization function, i.e. receives input voltage, the intended output voltage of output.
The linear voltage-stabilizing circuit of prior art is generally used for low voltage difference occasion, and input voltage and output voltage the most relatively low.Such as, low pressure
Difference linear constant voltage regulator (low dropout regulator is called for short LDO), is widely used the most in integrated circuit form.
As it is shown in figure 1, be the linear voltage dropping circuit schematic diagram of prior art.Input voltage passes through linear power dioxde M01, fall
Pressure obtains output voltage Vout.Output voltage obtains feedback voltage FB through feedback resistance R01, R02, and amplifier U01 is by controlling
Linear power dioxde M01 so that feedback voltage FB is equal to internal reference voltage VREF.Just as described above, the prior art scheme
It is applied to low input and output voltage, and common scheme when input and output voltage pressure reduction is less.
But, when input and output voltage is high pressure, as above hectovolt, then the grid of linear power dioxde is to being systematically up to a hundred
The high pressure of volt, therefore the drive circuit of linear power dioxde needs the high pressure of hectovolt, the driving of the linear power dioxde of prior art
Circuit cannot solve above-mentioned technical problem, have impact on the linear voltage-stabilizing circuit application in high pressure field.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of linear voltage-stabilizing circuit being applicable to high-voltage applications, in order to solve
What certainly prior art existed cannot be in the technical problem of high pressure applications.
The technical solution of the present invention is to provide the linear voltage-stabilizing circuit of a kind of following structure, including linear power dioxde
And driving control circuit, described linear power dioxde receives input voltage, by driving control circuit linear adjustment power tube
On off state, with output preset output voltage；
Described linear power dioxde includes the first power end, the second power end and controls end, described driving control circuit
Including feeder ear, drive end, the first end and the second end, described feeder ear is connected with one end of input voltage, the electricity of feeder ear
Pressure is clamped to supply voltage, and described supply voltage is less than input voltage；Described drive end and the control of linear power dioxde
End connects, the first end of described driving control circuit and the second end respectively with the first power end of described linear power dioxde and the
Two power end are connected；Voltage between wherein one end and first end of linear power dioxde of described input voltage is as output
Voltage.
Preferably, the cold end of described input voltage is as the cold end of output voltage, the of linear power dioxde
One power end is as the hot end of output voltage, and the feeder ear of described driving control circuit is through the low electricity of resistance Yu input voltage
Position end connects, and drives the first end of control circuit to be also connected with the first power end of linear power dioxde through resistance, drives and control electricity
Second end on road is connected and connects the hot end of input voltage with the second power end of linear power dioxde.
Preferably, the electric current of described feeder ear is flowed out in detection, arranges and flows out the current ratio stream driving control circuit the first end
Going out little first difference between current of electric current of described feeder ear, detection drives the voltage of control circuit the first end, by driving control circuit
Regulate the voltage of its drive end, with the driving voltage of linear adjustment power tube so that described input voltage and driving control circuit
The pressure reduction of the first end reaches predeterminated voltage, and described predeterminated voltage is equal to the reference voltage driving control circuit.
Preferably, the electric current of described feeder ear is flowed out in detection, arranges described input voltage and drives control circuit the first end
Pressure reduction be predeterminated voltage, described predeterminated voltage equal to drive control circuit reference voltage, detection flow out drive control electricity
The electric current of road the first end, by driving control circuit to regulate the voltage of its drive end, with the driving voltage of linear adjustment power tube,
Make to flow out little first difference between current of electric current driving the current ratio of control circuit the first end to flow out described feeder ear.
Preferably, described driving control circuit includes operational amplifier, and the outfan of described operational amplifier is as institute
The drive end of the driving control circuit stated, the voltage of described feeder ear is clamped to supply voltage by the first voltage source；Stream control is set
Current source, the second end of described stream control current source respectively with the first end and the first end of operational amplifier driving control circuit
Connecting, the hot end of the first termination input voltage of stream control current source, the size of described stream control current source is by flowing through power supply
The electric current of end controls, and size of current is equal to the electric current the flowing through described feeder ear difference between current that subtracts the first；Described operational amplifier
Second terminate into described reference signal.
Preferably, described linear power dioxde is p-type metal-oxide-semiconductor, the described drain electrode that the first power end is p-type metal-oxide-semiconductor, institute
The source electrode that the second power end is p-type metal-oxide-semiconductor stated, described control end is the gate pole of p-type metal-oxide-semiconductor.
Preferably, the hot end of described input voltage is as the hot end of output voltage, the of linear power dioxde
One power end is as the cold end of output voltage, and the feeder ear of described driving control circuit is through the high electricity of resistance with input voltage
Position end connects, and drives the first end of control circuit to be also connected with the first power end of linear power dioxde through resistance, drives and control electricity
Second end on road is connected with the second power end of linear power dioxde and connects the cold end of input voltage.
Preferably, detection flows into the electric current of described feeder ear, arranges and flows into the current ratio stream driving control circuit the first end
Entering little first difference between current of electric current of described feeder ear, detection drives the voltage of control circuit the first end, by driving control circuit
Regulate the voltage of its drive end, with the driving voltage of linear adjustment power tube so that drive the voltage of control circuit the first end to reach
To predeterminated voltage, described predeterminated voltage is equal to the reference voltage driving control circuit.
Preferably, detection flows into the electric current of described feeder ear, arranges the voltage driving control circuit the first end for presetting electricity
Pressure, described predeterminated voltage flows into, equal to the reference voltage of driving control circuit, detection, the electric current driving control circuit the first end,
By driving control circuit to regulate the voltage of its drive end, with the driving voltage of linear adjustment power tube so that flow into and drive control
The current ratio of circuit the first end processed flows into little first difference between current of electric current of described feeder ear.
Preferably, described driving control circuit includes operational amplifier, and the outfan of described operational amplifier is as institute
The drive end of the driving control circuit stated, the voltage of described feeder ear is clamped to supply voltage by the first voltage source；Stream control is set
Current source, the first end of described stream control current source respectively with the first end and the first end of operational amplifier driving control circuit
Connecting, the cold end of the second termination input voltage of stream control current source, the size of described stream control current source is by flowing through power supply
The electric current of end controls, and size of current is equal to the electric current the flowing through described feeder ear difference between current that subtracts the first；Described operational amplifier
Second terminate into described reference signal.
Preferably, described linear power dioxde is N-type metal-oxide-semiconductor, the described drain electrode that the first power end is N-type metal-oxide-semiconductor, institute
The source electrode that the second power end is N-type metal-oxide-semiconductor stated, described control end is the gate pole of N-type metal-oxide-semiconductor.
Use the circuit structure of the present invention, compared with prior art, have the advantage that and drive control circuit by clamper
Feeder ear voltage, at input and output high-voltage linear mu balanced circuit altogether, drive the feeder ear of control circuit, the first end and drive
These ports of moved end are all low pressure relative to input voltage；The high-voltage linear mu balanced circuit in input and output common-battery source, Linear Driving
The feeder ear of control circuit, the first end and these ports of drive end are the most all low pressure.In the present invention, drive control circuit
Output constant voltage can be realized with low pressure process, make linear voltage-stabilizing circuit be applied under high pressure occasion, drive control circuit institute
The voltage born can be less than the input of linear voltage stabilization or output voltage.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of prior art linear voltage-stabilizing circuit；
Fig. 2 is the circuit structure diagram of linear voltage-stabilizing circuit embodiment one of the present invention；
Fig. 3 is the circuit structure diagram driving control circuit in Fig. 2 embodiment one；
Fig. 4 is the circuit structure diagram of high-voltage linear mu balanced circuit embodiment two of the present invention；
Fig. 5 is the circuit structure diagram driving control circuit in Fig. 4 embodiment two；
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, but the present invention is not restricted to these
Embodiment.The present invention contains any replacement, amendment, equivalent method and scheme made in the spirit and scope of the present invention.
Understand thoroughly to make the public that the present invention to be had, be described in detail concrete in present invention below preferred embodiment
Details, and do not have the description of these details can also understand the present invention completely for a person skilled in the art.
Referring to the drawings the present invention the most more particularly described below in the following passage.It should be noted that, accompanying drawing is all adopted
By the form more simplified and all use non-ratio accurately, only in order to convenient, aid in illustrating the embodiment of the present invention lucidly
Purpose.
The basic implementation of the present invention is as follows: the linear voltage-stabilizing circuit of the present invention, including linear power dioxde and driving thereof
Control circuit, described linear power dioxde receives input voltage, by driving the switch shape of control circuit linear adjustment power tube
State, the output voltage preset with output；Described linear power dioxde includes the first power end, the second power end and controls end, institute
The driving control circuit stated includes one end of feeder ear, drive end, the first end and the second end, described feeder ear and input voltage
Connecting, the voltage of feeder ear is clamped to supply voltage, and described supply voltage is less than input voltage；Described drive end and line
Property power tube control end connect, the first end of described driving control circuit and the second end respectively with described linear power dioxde
First power end and the second power end are connected；Between wherein one end and first end of linear power dioxde of described input voltage
Voltage as output voltage.
Based on above-mentioned basic implementation, two embodiments are used to be described in detail.Fig. 2 and Fig. 4 schematic diagram respectively is real
Execute the circuit structure of example one and two, the two implementation being respectively input and output high-voltage linear mu balanced circuit altogether and input
The implementation of the high-voltage linear mu balanced circuit in output common-battery source, and based on same inventive concept, but have in physical circuit realization
Institute is different, and application p-type metal-oxide-semiconductor and N-type metal-oxide-semiconductor dexterously, to coordinate corresponding application scenario.
With reference to shown in Fig. 2, illustrate input and output high-voltage linear mu balanced circuit altogether, explain as embodiment one
State.Driving the feeder ear VCC of control circuit through resistance R10 ground connection, feeder ear VCC is clamped to supply voltage, and described input
Voltage Vin and the pressure reduction V10 of described supply voltage, described pressure reduction pressure reduction V10 is definite value；Control circuit detection is driven to flow out VCC
Electric current i10, arrange flow out drive control circuit the first end current ratio flow out described feeder ear little first difference between current of electric current.
Driving control circuit to arrange the electric current i11=i10-I0 that its first end VS flows out, wherein I0 represents the first difference between current, and detects
Drive the voltage of the first end VS of control circuit, by regulating the driving voltage of p-type linear power dioxde M10 so that input voltage
The pressure reduction V11 of Vin and VS is predeterminated voltage VREF1, and wherein predeterminated voltage VREF1 is the reference voltage driving control circuit.
Or, the pressure reduction V11 arranging input voltage and VS is a fixed voltage VREF1, and detects the electric current that VS flows out
I11, by regulating the driving voltage of p-type linear power dioxde M10 so that the electric current i11=i10-I0 that VS flows out.Linear power dioxde
M10 is p-type pipe, and G, D and S can characterize its grid, drain electrode and source electrode respectively.
The code name of the letter and number that above is referred to the most all is mentioned at accompanying drawing 2, but for the needs illustrated, therefore give
To introduce, and it is easy to the derivation of formula.Though such, but those of ordinary skill in the art all can know according to foregoing description, at this
It is explained.
The present embodiment one receiving the principle that can make output constant voltage under high input voltage is:
Vin=i10*R10+V10；
Vin=Vout+i11*R11+V11；
Vout=i10*R10+V10-(i11*R11+V11)=i10*R10-i11*R11+V10-V11；
As R10=R11=R0, then Vout=(i10-i11) * R0+V10-V11=I0*R0+ (V10-V11).
Owing to I0 is the first difference between current, the first difference between current is definite value, and V10-V11 is also fixed voltage, by arranging resistance
R10=R11=R0 (it is believed that R0 is predeterminable resistance value), then can regulate output voltage by the size of regulation R0.
Owing to driving the feeder ear VCC of control circuit, the first end VS, these pins of drive end G (driving control circuit to be integrated in core
In sheet, therefore pin can be referred to as) relatively input voltage vin is all low pressure, therefore linear drive control circuitry can use low pressure work
Skill realizes output constant voltage.
With reference to shown in Fig. 3, illustrate the particular circuit configurations of respective drive control circuit based on Fig. 2, illustrate it
The implementation of middle driving control circuit.But the driving control circuit of the present invention is not limited to the circuit structure of Fig. 3.As it is shown on figure 3,
VCC is by voltage source V50 clamper.The electric current i10 flowing through VCC includes the supply current i50 to all remaining circuit U50 and voltage source
The electric current of V50.Remaining circuit indicated above is other circuit needing VCC to power, and the necessary technology technology of non-invention
Feature, with the present invention realize unrelated, therefore do not repeat, but in order to illustrate the problem such as voltage, current relationship, therefore relate in the drawings
And.
I50 is controlled by the electric current i10 flowing through VCC for the size of current of stream control current source, i.e. I50, and size of current is equal to
Flowing through the electric current of described feeder ear subtract the first difference between current, i.e. I50=i10-I0, I0 represents the first difference between current.The electricity that electric current controls
One end of stream source I50 is connected with the positive input terminal of operational amplifier U51,.Owing to flowing through the electricity of operational amplifier U51 positive input terminal
Stream is approximately 0, therefore drive the first end VS of control circuit electric current i11=i52-I0=i10-I0 (as I0 > i10 time, then
I11=0, VS voltage is pulled down, and the output G of U51 is also pulled down, and linear power dioxde M10 is fully on).Operational amplifier U51 is controlled
The pressure reduction of input voltage vin processed and VS voltage is equal to reference voltage VREF1.The output of operational amplifier U51 is connected to linear merit
The grid (also referred to as gate pole) of rate pipe M10, in order to drive linear power dioxde M10.
When output voltage Vout is less than I0*R0+ (V50-VREF1) (wherein, R10=R11=R0), then input voltage
The pressure reduction of Vin and VS voltage is less than VREF1, operational amplifier U51 drive end G step-down, and the electric current through linear power dioxde M10 increases
Add, so that output voltage raises；When output voltage is higher than I0*R0+ (V50-VREF1), then input voltage vin and VS voltage
Pressure reduction higher than VREF1, operational amplifier U51 output G uprise, through linear power dioxde M10 electric current reduce so that output
Voltage reduces.Therefore, the pressure reduction of input voltage vin and VS voltage is default situation equal to VREF1, but realizes process at this
In, there is dynamic equilibrium, thus realize exporting constant voltage.When V50 and VREF1 voltage is much smaller than input and output voltage, i.e. VCC
With VS voltage much smaller than input and output voltage, then output voltage is reduced to I0*R0, it is possible to be approximately constant voltage.
With reference to shown in Fig. 4, illustrate the high-voltage linear mu balanced circuit in input and output common-battery source, explain as embodiment two
State.Driving control circuit clamper VCC to supply voltage, it is i20 that detection flows into the electric current of VCC.Drive control circuit that inflow is set
The electric current i21=i20-I0 of its first end VS, wherein I0 represents the first difference between current, and detects VS voltage, by regulation N-type line
Property power tube M20 driving voltage so that drive control circuit the first end VS reach predeterminated voltage VREF1, wherein VREF1 is for driving
The reference voltage of dynamic control circuit.
Or, driving control circuit the first end VS is set and is equal to predeterminated voltage VREF1, and detect inflow driving control circuit
The electric current i21 of the first end VS, by regulating the driving voltage of N-type linear power dioxde M20 so that drive control circuit the first end VS
The electric current i21=i20-I0 flowed into.Linear power dioxde M20 is N-type pipe, and G, D and S can characterize its grid, drain electrode and source electrode respectively.
The method can make the principle of output constant voltage be:
Vin=i20*R20+VCC；
Vin=Vout+i21*R21+VS；
Vout=i20*R20+VCC-(i21*R21+VS)=i20*R20-i21*R21+VCC-VS；
As R20=R21=R0, then Vout=(i20-i21) * R0+VCC-VS=I0*R0+ (VCC-VS).
Owing to I0 is the first difference between current, the first difference between current is definite value, and VCC-VS is also fixed voltage, by arranging resistance
R20=R21=R0, then can regulate output voltage by the size of regulation R0.Due to linear drive control circuitry VCC,
These pins of VS, G are the most all low pressure, and therefore linear drive control circuitry can realize output constant voltage with low pressure process,
Implementation method is simple, low cost.
With reference to shown in Fig. 5, illustrate the particular circuit configurations of respective drive control circuit based on Fig. 2, illustrate it
The implementation of middle driving control circuit.The feeder ear VCC driving control circuit powers to all circuit, and by voltage source V40
Clamper.The electric current i20 then flowing through VCC includes the supply current i40 to all remaining circuit U40 and the electric current of voltage source V40.
I40 is controlled by VCC electric current i20 for the size of current of stream control current source, i.e. I40, and size of current is equal to flowing through described feeder ear
Electric current subtract the first difference between current, i.e. I40=i20-I0, I0 represents the first difference between current.Electric current control current source I40 one end and
The positive input terminal of operational amplifier U41 is connected.It is approximately 0, therefore VS electric current i21=owing to flowing through the electric current of amplifier positive input terminal
I42-I0=i20-I0 (as I0 > i20 time, then i21=0, VS voltage is pulled up, and the outfan G of U41 (i.e. drives control circuit
Drive end) also it is pulled up, linear power dioxde M20 is fully on).Operational amplifier U41 controls VS voltage equal to reference voltage
VREF1.The output of operational amplifier U41 is connected to the grid of linear power dioxde M20, drives M20.
When output voltage is less than I0*R0+ (V40-VREF1) (wherein, R20=R21=R0), then VS voltage is higher than
VREF1, operational amplifier U41 outfan G uprise, and the electric current through linear power dioxde M20 increases, and the drain voltage of M20 reduces,
So that output voltage raises；When output voltage is higher than I0*R0+ (V40-VREF1), then VS voltage is less than VREF1, and computing is put
Big device U41 outfan G step-down, the electric current through linear power dioxde M20 reduces, and the drain voltage of M20 raises, so that output electricity
Pressure drop is low.Therefore, VS voltage is default situation equal to VREF1, but during this realizes, there is dynamic equilibrium, from
And realize exporting constant voltage.When V40 and VREF1 voltage is much smaller than input and output voltage, i.e. VCC and VS voltage is defeated much smaller than input
Go out voltage, then output voltage is reduced to I0*R0, it is possible to be approximately constant voltage.
In above example, relating to I40 and i40, I50 and i50 and all characterize different current forms, i40 and i50 characterizes stream
The electric current of warp, I40 and I50 then refers to the current source applied, is explained at this.In addition, although will implement above
Example is separately illustrated and illustrates, but relates to the technology that part is common, In the view of those of ordinary skill in the art, can embodiment it
Between be replaced and integrate, relate to the content that one of them embodiment is not expressly recited, then refer on the books another real
Execute example.Although it addition, the present invention is in the case of solution is applied to high input voltage so that drive control circuit to bear than input electricity
Press lower voltage, but be equally applicable to the situation of low pressure input, say, that since the present invention can be as high-voltage line
Property mu balanced circuit, it is also possible to for low-pressure linear mu balanced circuit.
Embodiments described above, is not intended that the restriction to this technical scheme protection domain.Any in above-mentioned enforcement
Amendment, equivalent and the improvement etc. made within the spirit of mode and principle, should be included in the protection model of this technical scheme
Within enclosing.
Claims (11)
1. a linear voltage-stabilizing circuit, including linear power dioxde and driving control circuit thereof, described linear power dioxde receives defeated
Enter voltage, by driving control circuit linear adjustment power tube, the output voltage preset with output；It is characterized in that:
Described linear power dioxde includes the first power end, the second power end and controls end, and described driving control circuit includes
Feeder ear, drive end, the first end and the second end, described feeder ear is connected with one end of input voltage, the voltage quilt of feeder ear
Being clamped to supply voltage, described supply voltage is less than input voltage；Described drive end connects with the control end of linear power dioxde
Connect, the first end of described driving control circuit and the second end respectively with the first power end and second merit of described linear power dioxde
Rate end is connected；Voltage between wherein one end and first end of linear power dioxde of described input voltage is as output electricity
Pressure.
Linear voltage-stabilizing circuit the most according to claim 1, it is characterised in that: the cold end conduct of described input voltage
The cold end of output voltage, the first power end of linear power dioxde controls as the hot end of output voltage, described driving
The feeder ear of circuit is connected with the cold end of input voltage through resistance, drive the first end of control circuit also through resistance with linear
First power end of power tube connects, and drives the second end of control circuit to be connected with the second power end of linear power dioxde and connect
The hot end of input voltage.
Linear voltage-stabilizing circuit the most according to claim 2, it is characterised in that: the electric current of described feeder ear is flowed out in detection, if
Putting and flow out little first difference between current of electric current driving the current ratio of control circuit the first end to flow out described feeder ear, detection drives and controls
The voltage of circuit the first end, by driving control circuit to regulate the voltage of its drive end, with the driving electricity of linear adjustment power tube
Pressure so that described input voltage reaches predeterminated voltage with the pressure reduction driving control circuit the first end, and described predeterminated voltage is equal to
Drive the reference voltage of control circuit.
Linear voltage-stabilizing circuit the most according to claim 2, it is characterised in that: the electric current of described feeder ear is flowed out in detection, if
The pressure reduction putting described input voltage and driving control circuit the first end is predeterminated voltage, and described predeterminated voltage controls equal to driving
The reference voltage of circuit, the electric current driving control circuit the first end is flowed out in detection, by driving control circuit to regulate its drive end
Voltage, with the driving voltage of linear adjustment power tube so that flow out and drive the current ratio of control circuit the first end to flow out described
Little first difference between current of electric current of feeder ear.
Linear voltage-stabilizing circuit the most according to claim 3, it is characterised in that: described driving control circuit includes that computing is put
Big device, the outfan of described operational amplifier as the drive end of described driving control circuit, the voltage of described feeder ear by
First voltage source is clamped to supply voltage；Arranging and flow control current source, the second end of described stream control current source is controlled with driving respectively
First end of circuit processed and the first end of operational amplifier connect, the high potential of the first termination input voltage of stream control current source
End, the size of described stream control current source is controlled by the electric current flowing through feeder ear, and size of current is equal to flowing through described feeder ear
The electric current difference between current that subtracts the first；The second of described operational amplifier terminates into described reference signal.
Linear voltage-stabilizing circuit the most according to claim 3, it is characterised in that: described linear power dioxde is p-type metal-oxide-semiconductor,
The described drain electrode that the first power end is p-type metal-oxide-semiconductor, the described source electrode that the second power end is p-type metal-oxide-semiconductor, described control end
Gate pole for p-type metal-oxide-semiconductor.
Linear voltage-stabilizing circuit the most according to claim 1, it is characterised in that: the hot end conduct of described input voltage
The hot end of output voltage, the first power end of linear power dioxde controls as the cold end of output voltage, described driving
The feeder ear of circuit is connected with the hot end of input voltage through resistance, drive the first end of control circuit also through resistance with linear
First power end of power tube connects, and drives the second end of control circuit be connected with the second power end of linear power dioxde and connect defeated
Enter the cold end of voltage.
Linear voltage-stabilizing circuit the most according to claim 7, it is characterised in that: detection flows into the electric current of described feeder ear, if
Putting and flow into little first difference between current of electric current driving the current ratio of control circuit the first end to flow into described feeder ear, detection drives and controls
The voltage of circuit the first end, by driving control circuit to regulate the voltage of its drive end, with the driving electricity of linear adjustment power tube
Pressure so that drive the voltage of control circuit the first end to reach predeterminated voltage, described predeterminated voltage is equal to driving control circuit
Reference voltage.
Linear voltage-stabilizing circuit the most according to claim 7, it is characterised in that: detection flows into the electric current of described feeder ear, if
The voltage putting driving control circuit the first end is predeterminated voltage, and described predeterminated voltage is equal to the reference electricity driving control circuit
Pressure, detection flows into the electric current driving control circuit the first end, by driving control circuit to regulate the voltage of its drive end, with regulation
The driving voltage of linear power dioxde so that the electric current flowing into the current ratio described feeder ear of inflow driving control circuit the first end is little
First difference between current.
Linear voltage-stabilizing circuit the most according to claim 8, it is characterised in that: described driving control circuit includes computing
Amplifier, the outfan of described operational amplifier is as the drive end of described driving control circuit, the voltage of described feeder ear
It is clamped to supply voltage by the first voltage source；Stream control current source is set, the first end of described stream control current source respectively with driving
First end of control circuit and the first end of operational amplifier connect, the electronegative potential of the second termination input voltage of stream control current source
End, the size of described stream control current source is controlled by the electric current flowing through feeder ear, and size of current is equal to flowing through described feeder ear
The electric current difference between current that subtracts the first；The second of described operational amplifier terminates into described reference signal.
11. linear voltage-stabilizing circuit according to claim 10, it is characterised in that: described linear power dioxde is N-type MOS
Pipe, the described drain electrode that the first power end is N-type metal-oxide-semiconductor, the described source electrode that the second power end is N-type metal-oxide-semiconductor, described control
End is the gate pole of N-type metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610460171.1A CN106094959B (en) | 2016-06-21 | 2016-06-21 | Linear voltage-stabilizing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610460171.1A CN106094959B (en) | 2016-06-21 | 2016-06-21 | Linear voltage-stabilizing circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106094959A true CN106094959A (en) | 2016-11-09 |
| CN106094959B CN106094959B (en) | 2018-09-21 |
Family
ID=57252127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610460171.1A Active CN106094959B (en) | 2016-06-21 | 2016-06-21 | Linear voltage-stabilizing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106094959B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110764563A (en) * | 2019-10-29 | 2020-02-07 | 杰华特微电子（杭州）有限公司 | Voltage regulation circuit and method |
| CN111323634A (en) * | 2018-12-15 | 2020-06-23 | 深圳市角度控光智能照明技术有限公司 | Novel wide-range current sampling circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201319560Y (en) * | 2008-12-05 | 2009-09-30 | 上海贝岭股份有限公司 | Voltage-reducing circuit used for high-voltage power supply |
| US20100213917A1 (en) * | 2009-02-20 | 2010-08-26 | Pulijala Srinivas K | Frequency Compensation Scheme for Stabilizing the LDO Using External NPN in HV Domain |
| US20140117957A1 (en) * | 2012-11-01 | 2014-05-01 | Kabushiki Kaisha Toshiba | Voltage regulator |
| CN104808734A (en) * | 2015-02-17 | 2015-07-29 | 唯捷创芯(天津)电子技术有限公司 | Adaptive low-voltage difference linear voltage stabilizer with wide withstand voltage range and chip thereof |
| CN205809758U (en) * | 2016-06-21 | 2016-12-14 | 杰华特微电子（杭州）有限公司 | Linear voltage-stabilizing circuit |
-
2016
- 2016-06-21 CN CN201610460171.1A patent/CN106094959B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201319560Y (en) * | 2008-12-05 | 2009-09-30 | 上海贝岭股份有限公司 | Voltage-reducing circuit used for high-voltage power supply |
| US20100213917A1 (en) * | 2009-02-20 | 2010-08-26 | Pulijala Srinivas K | Frequency Compensation Scheme for Stabilizing the LDO Using External NPN in HV Domain |
| US20140117957A1 (en) * | 2012-11-01 | 2014-05-01 | Kabushiki Kaisha Toshiba | Voltage regulator |
| CN104808734A (en) * | 2015-02-17 | 2015-07-29 | 唯捷创芯(天津)电子技术有限公司 | Adaptive low-voltage difference linear voltage stabilizer with wide withstand voltage range and chip thereof |
| CN205809758U (en) * | 2016-06-21 | 2016-12-14 | 杰华特微电子（杭州）有限公司 | Linear voltage-stabilizing circuit |
Non-Patent Citations (1)
| Title |
|---|
| 李建兵 等: "高压后置线性稳压电路", 《2008年中国电工技术学会电力电子学会第十一届学术年会论文集》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323634A (en) * | 2018-12-15 | 2020-06-23 | 深圳市角度控光智能照明技术有限公司 | Novel wide-range current sampling circuit |
| CN111323634B (en) * | 2018-12-15 | 2022-04-05 | 深圳市角度控光智能照明技术有限公司 | Wide-range current sampling circuit |
| CN110764563A (en) * | 2019-10-29 | 2020-02-07 | 杰华特微电子（杭州）有限公司 | Voltage regulation circuit and method |
| CN110764563B (en) * | 2019-10-29 | 2024-04-19 | 杰华特微电子股份有限公司 | Voltage regulating circuit and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106094959B (en) | 2018-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103226370B (en) | Voltage regulator | |
| CN102204072B (en) | Delayed control transfer circuit and power supply system | |
| CN104253959B (en) | The voltage stabilizing backlight control circuit and television set of a kind of low-power consumption | |
| CN106855731B (en) | Dual-mode voltage stabilizer circuit | |
| CN104699153B (en) | Low-dropout linear regulator | |
| CN102570793B (en) | Working size switching circuit for power transistors in DC-DC converter | |
| CN103296717A (en) | Battery charging system | |
| CN109839979A (en) | Low dropout voltage regulator and power output apparatus | |
| CN112910250B (en) | Electronic equipment and control method thereof | |
| US8854025B2 (en) | Switching power supply | |
| CN107422771B (en) | Voltage regulator circuit and its control method | |
| CN205809758U (en) | Linear voltage-stabilizing circuit | |
| CN109343644A (en) | A kind of automatic adjustment current-limiting protection circuit | |
| TW201633031A (en) | Voltage regulator | |
| CN106094959A (en) | Linear voltage-stabilizing circuit | |
| CN112910251A (en) | Electronic equipment and control method thereof | |
| CN104035465B (en) | Voltage regulator | |
| CN105226945B (en) | Boost chip | |
| CN108363450B (en) | A kind of power supply circuit, terminal device and its method for controlling power supply | |
| US8436681B2 (en) | Voltage regulation circuit | |
| CN107040250A (en) | A kind of voltage mode drive circuit | |
| CN105807831A (en) | Linear voltage regulator and linear voltage stabilizing system preventing overshoot | |
| US8395354B2 (en) | Power supply/charger | |
| CN104253955B (en) | A kind of constant current of low-power consumption and controlling circuit of voltage regulation and television set | |
| JPS599702A (en) | Adjustor for electric operator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 901-23, 9 / F, west 4 building, Xigang development center, 298 Zhenhua Road, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province, 310030 Patentee after: Jiehuate Microelectronics Co.,Ltd. Patentee after: HANGZHOU DEMING ELECTRONIC Co.,Ltd. Address before: Room 424, building 1, 1500 Wenyi West Road, Cangqian street, Yuhang District, Hangzhou City, Zhejiang Province Patentee before: JOULWATT TECHNOLOGY (HANGZHOU) Co.,Ltd. Patentee before: HANGZHOU DEMING ELECTRONIC Co.,Ltd. |