CN110531826A - Low pressure drop shunt regulator - Google Patents
Low pressure drop shunt regulator Download PDFInfo
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- CN110531826A CN110531826A CN201810516123.9A CN201810516123A CN110531826A CN 110531826 A CN110531826 A CN 110531826A CN 201810516123 A CN201810516123 A CN 201810516123A CN 110531826 A CN110531826 A CN 110531826A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
- G05F3/02—Regulating voltage or current
- G05F3/08—Regulating voltage or current wherein the variable is dc
- G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
- G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
- G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
- G05F3/26—Current mirrors
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- Microelectronics & Electronic Packaging (AREA)
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- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The present invention provides a kind of low pressure drop shunt regulators comprising one first current mirror module, one second current mirror module and an output module.The first end of first current mirror module is electrically connected input voltage, and the first current mirror module has a high output impedance；The first end of second current mirror module is electrically connected the second end of the first current mirror module, and the second end of the second current mirror module is electrically connected a reference voltage；The output end of output module is electrically connected the third end of the first current mirror module, and the second current mirror module is electrically connected in the output end and first end of the output module, and the second end of output module is electrically connected reference voltage.Low pressure drop shunt regulator in the present invention is using in conjunction with low pressure processing procedure and high pressure manufacturing process switch block, constitute the current mirroring circuit with high output impedance, to reduce curent change caused by significantly input voltage range, low pressure drop shunt regulator internal consumption energy can be more reduced.
Description
Technical field
The present invention relates to a kind of low pressure drop shunt regulators, more particularly to one kind to become in input voltage range with low current
The low pressure drop shunt regulator of rate.
Background technique
In voltage regulator circuit, low-voltage-drop linear voltage regulator is a kind of circuit of offer burning voltage electric current, can receive big model
The input voltage enclosed, such as 5V~30V.
However since the range of input voltage is quite big, low-voltage-drop linear voltage regulator needs to provide a stable output again
Electric current, when input voltage is a high voltage, due to general low-voltage-drop linear voltage regulator mainly using current mirroring circuit as
Current source, and traditional current mirror switch block output impedance not with higher, relatively, the energy consumed inside it
Also it can therefore improve.
Therefore it provides a kind of voltage-stablizer with high output impedance current source, then be an important topic of present industry.
Summary of the invention
In view of this, the present invention provides a kind of low pressure drop shunt regulator, for converting an input voltage as an output
Voltage, which is characterized in that the low pressure drop shunt regulator includes: one first current mirror module, including a first end, one second
End and a third end, wherein the first end of first current mirror module is electrically connected the input voltage, and described the
One current mirror module has a high output impedance；One second current mirror module, including a first end and a second end, wherein
The first end of second current mirror module is electrically connected the second end of first current mirror module, second electric current
The second end of mirror module is electrically connected a reference voltage；And an output module, including an output end, a first end and
One second end, wherein the output end of output module is electrically connected the third end of first current mirror module, described
Second current mirror module, the output module is electrically connected in the output end of output module and the first end
The second end be electrically connected the reference voltage.
Preferably, the low pressure drop shunt regulator further include: a starting module, including a first end, a second end with
And a third end, wherein the first end of the starting module is electrically connected the input voltage, the institute of the starting module
It states second end and is electrically connected the reference voltage, the third end of the starting module is electrically connected the second current mirror mould
The first end of block.
Preferably, the third end of the starting module passes through the institute of one first impedance and first current mirror module
State second end electric connection.
Preferably, the output end of the output module passes through the institute of one second impedance and second current mirror module
State first end electric connection.
Preferably, first current mirror module includes: one first current mirror switch, has a first end, a second end
An and third end, wherein the first end of the first current mirror switch is electrically connected first current mirror module
The first end；One second current mirror switch, has a first end, a second end and a third end, second current mirror
The first end of switch is electrically connected the third end of the first current mirror switch, the institute of the second current mirror switch
State second end be electrically connected first current mirror switch the second end and second current mirror switch described the
The third end at three ends, the second current mirror switch is electrically connected the second end of first current mirror module；One
Third current mirror switch, with a first end, a second end and a third end, described the first of the third current mirror switch
End is electrically connected the first end of first current mirror module, and the second end of the third current mirror switch electrically connects
Connect the second end of the first current mirror switch and the second end of second current mirror switch；And one the 4th
Current mirror switch has a first end, a second end and a third end, the first end electricity of the 4th current mirror switch
Property connect the third end of third current mirror switch, the second end of the 4th current mirror switch is electrically connected institute
The second end of third current mirror switch is stated, the third end of the 4th current mirror switch is electrically connected first electricity
Flow the third end of mirror module.
Preferably, second current mirror module includes: a first switch, has a first end, a second end and one
Third end, wherein the first end of the first switch is electrically connected the first end of second current mirror module；One
5th current mirror switch, with a first end, a second end and a third end, described the first of the 5th current mirror switch
End is electrically connected the second end of an external current source and the 5th current mirror switch, the 5th current mirror switch
The third end is electrically connected the reference voltage；One the 6th current mirror switch has a first end, a second end and one the
Three ends, the first end of the 6th current mirror switch are electrically connected the third end of the first switch, and the described 6th
The second end of current mirror switch is electrically connected the second end of the 5th current mirror switch, and the 6th current mirror is opened
The third end closed is electrically connected the reference voltage.
Preferably, the output module includes: one first output switch, has a first end, a second end and one the
Three ends, wherein the first end of the first output switch is electrically connected the output end of the output module, and described the
The second end of one output switch is electrically connected the third end of the first output switch；One second output switch, tool
There are a first end, a second end and a third end, wherein described in the first end of the second output switch is electrically connected
The third end of first output switch；One third output switch, has a first end, a second end and a third end,
In, the first end of the third output switch is electrically connected the third end of the second output switch, the third
The second end of output switch is electrically connected the second end of the second output switch, the institute of the third output switch
It states third end and is electrically connected the reference voltage；One the 4th output switch, has a first end, a second end and a third
End, wherein the first end of the 4th output switch is electrically connected the output end of the output module, and the described 4th
The second end of output switch is electrically connected the third end and the third output switch of the second output switch
The first end, the third end of the 4th output switch is electrically connected the reference voltage.
Preferably, the second end electricity of the second end of the second output switch and third output switch
Property connect second current mirror module the 5th current mirror switch the second end and the 6th current mirror open
The second end closed.
Preferably, the output end pass through the first switch of one second impedance and second current mirror module the
Two ends are electrically connected.
Preferably, the starting module includes: one first to start switch, and has a first end, a second end and one the
Three ends, wherein the described first first end started switch is electrically connected to the starting module by a third impedance
The first end, the described first second end started switch are electrically connected to described the first of second current mirror module
The second end of switch, the described first third end started switch is electrically connected described the second of the starting module
End；One diode-connected transistor has a first end, a second end and a third end, wherein the diode connection is brilliant
The first end of body pipe is electrically connected the first end and the diode-connected transistor that described first starts switch
The second end, the third end of the diode-connected transistor is electrically connected described the second of the starting module
End；And one third start switch, have a first end, a second end and a third end, wherein the third starts switch
The first end be electrically connected the third end of the starting module, the second end that the third starts switch is electrical
Connect the first end of the first end and the diode-connected transistor that described first starts switch, the third starting
The third end of switch is electrically connected two end of the starting module.
Preferably, the first current mirror switch and third current mirror switch are one respectively with low pressure processing procedure
P type metal oxide semiconductor field-effect transistor, the second current mirror switch and the 4th current mirror switch are respectively
The one P type metal oxide semiconductor field-effect transistor with high pressure manufacturing process.
In conclusion low pressure drop shunt regulator in the present invention is opened using the first current mirror of combination low pressure processing procedure
It closes, third current mirror switch and the second current mirror of high pressure manufacturing process switch, the 4th current mirror switch composition have high output impedance
Current mirroring circuit can more reduce low pressure drop shunting to reduce significantly curent change caused by input voltage range
Voltage-stablizer internal consumption energy.In addition, due to combining the current mirror switch with low pressure processing procedure and the electricity with high pressure manufacturing process
Mirror switch is flowed, chip layout more can be flexibly adjusted.
To make the foregoing features and advantages of the present invention clearer and more comprehensible, preferred embodiment is cited below particularly, and appended by cooperation
Schema is described in detail below.
Detailed description of the invention
Fig. 1 is the schematic diagram of the low pressure drop shunt regulator of the embodiment of the present invention.
Fig. 2 is the circuit diagram of the first current mirror module in Fig. 1.
Fig. 3 is the circuit diagram of the second current mirror module in Fig. 1.
Fig. 4 is the circuit diagram of output module in Fig. 1.
Fig. 5 is the circuit diagram of starting module in Fig. 1.
Fig. 6 is the voltage and current schematic diagram of the first current mirror module of Fig. 1.
Specific embodiment
Various exemplary embodiments will be more fully described referring to alterations below, shown in alterations
Exemplary embodiments.However, concept of the present invention may embody in many different forms, and it should not be construed as limited by institute herein
The exemplary embodiments of elaboration.Specifically, providing these exemplary embodiments makes the present invention that will be detailed and complete, and will
The scope of concept of the present invention is sufficiently conveyed to those who familiarize themselves with the technology.In all schemas, the area Ceng Ji can be lavished praise on oneself in order to clear
Size and relative size.Similar number indicates similar assembly always.
It should be understood that although herein various assemblies may be described using term first, second, third, etc., these groups
Part should not be limited by these terms.These terms are to distinguish a component and another component.Therefore, first group be discussed herein below
Part can be described as the second component without departing from the teaching of concept of the present invention.As used herein, term " and/or " include associated
All combinations for listing any one of project and one or more.
The foot position narration of following switch block is described all in accordance with the reference numerals of each foot position.
(embodiment of low pressure drop shunt regulator of the present invention)
Fig. 1 to Fig. 5 is please referred to, Fig. 1 is schematically shown as the schematic diagram of the low pressure drop shunt regulator of the embodiment of the present invention.Fig. 2 is drawn
It is shown as the circuit diagram of the first current mirror module in Fig. 1.Fig. 3 is schematically shown as the circuit diagram of the second current mirror module in Fig. 1.
Fig. 4 is schematically shown as the circuit diagram of output module in Fig. 1.Fig. 5 is schematically shown as the circuit diagram of starting module in Fig. 1.
Low pressure drop shunt regulator 1 includes one first current mirror module 11, one second current mirror module 12, an output module
13 and a starting module 14.
In the present embodiment, low pressure drop shunt regulator 1 is a low-voltage-drop linear voltage regulator (Low-dropout
Voltage regulator), for converting an input voltage VCC as an output voltage VO UT.In the present embodiment, input electricity
The range of pressure VCC can be 0V~40V, such as: 4.5V~30V can be adjusted according to actual needs, not make in the present invention
Limitation.
In the present embodiment, the first current mirror module 11 includes a first end 11-N1, a second end 11-N2 and 1 the
Three end 11-N3.The first end 11-N1 of first current mirror module 11 is electrically connected input voltage VCC.
Second current mirror module 12 also includes an a first end 12-N1 and second end 12-N2.Second current mirror module 12
First end 12-N1 be electrically connected the first current mirror module 11 second end 11-N2.The second end of second current mirror module 12
12-N2 is electrically connected a reference voltage Vee.In the present embodiment, reference voltage Vee is an earthing potential, however, can be according to reality
Border demand is designed and adjusts, in the present invention with no restriction.
Output module 13 includes an output end Out, a first end 13-N1 and a second end 13-N2.Output module 13
Output end Out is electrically connected the third end 11-N3, the output end Out of output module 13 and first of the first current mirror module 11
The second current mirror module 12 is electrically connected in end 13-N1, and the second end 13-N2 of output module 13 is electrically connected reference voltage
Vee.And voltage-stablizer 1 then provides output voltage VO UT by the output end Out of output module 13.Output voltage VO UT can be solid for one
Constant voltage or variable voltage can be designed and adjust according to actual needs, in the present invention with no restriction.
Starting module 14, including a first end 14-N1, a second end 14-N2 and a third end 14-N3.Starting module
13 first end 13-N1 is electrically connected input voltage VCC, and the second end 14-N2 of starting module 14 is electrically connected reference voltage
Vee, the third end 14-N3 of starting module 14 are electrically connected the first end 12-N1 of the second current mirror module 12.
Wherein, the third end 14-N3 of starting module 14 passes through the second of one first impedance R1 and the first current mirror module 11
11-N2 is held to be electrically connected.The output end Out of output module 13 is electrically connected by one second impedance R2 with the second current mirror module 12
It connects.
Referring to figure 2., the first current mirror module 11 includes one first current mirror switch MP1, one second current mirror switch
MP2, a third current mirror switch MP3 and one the 4th current mirror switch MP4.
First current mirror switch MP1 has a first end, a second end and a third end.First current mirror switch MP1
First end be electrically connected the first current mirror module 11 first end 11-N1.Second current mirror switch MP2 have a first end,
One second end and a third end.The first end of second current mirror switch MP2 is electrically connected the described of the first current mirror switch MP1
Third end, the second end of the second current mirror switch MP2 are electrically connected the second end and the second electric current of the first current mirror switch MP1
The third end of mirror switch MP2.The third end of second current mirror switch MP2 is electrically connected the second end of the first current mirror module 11
11-N2.Third current mirror switch MP3 has a first end, a second end and a third end.Third current mirror switch MP3's
First end is electrically connected the first end 11-N1 of the first current mirror module 11.The second end of third current mirror switch MP3 is electrically connected
The second end of the second end of first current mirror switch MP1 and the second current mirror switch MP2.4th current mirror switch MP4 has
One first end, a second end and a third end.The first end of 4th current mirror switch MP4 is electrically connected third current mirror switch
The third end of MP3.The second end of 4th current mirror switch MP4 is electrically connected the second end of third current mirror switch MP3, the 4th electricity
The third end for flowing mirror switch MP4 is electrically connected the third end 11-N3 of the first current mirror module 11.
In the present embodiment, the first current mirror switch MP1, the second current mirror switch MP2, third current mirror switch MP3 with
And the 4th current mirror switch MP4 constitute a current mirroring circuit, receive input voltage VCC, provide a stabling current to output end
Out。
In the present embodiment, the first current mirror switch MP1, the second current mirror switch MP2, third current mirror switch MP3 with
And the 4th current mirror switch MP4 be a P type metal oxide semiconductor field-effect transistor (P-type Metal Oxide
Semiconductor Field Effect Transistor).In the present embodiment, the first current mirror switch MP1 and third
Current mirror switch MP3 is the metal oxide semiconductcor field effect transistor of low pressure processing procedure.And the second current mirror switch MP2 and
Four current mirror switch MP4 are then the metal oxide semiconductcor field effect transistors of high pressure manufacturing process.In addition, the first current mirror switchs
MP1 and the second current mirror switch MP2 can also be a Darlington (composite transistor).Third current mirror is opened
Closing MP3 and the 4th current mirror switch MP4 can be a Darlington (composite transistor), in the present invention
In with no restriction.
In the present embodiment, in conjunction with the first current mirror switch MP1, third current mirror switch MP3 and the height of low pressure processing procedure
The second current mirror switch MP2, the 4th current mirror switch MP4 for suppressing journey, can be such that the first current mirror module 11 of voltage-stablizer 1 has
High output impedance.Also therefore, voltage-stablizer 1 is in input voltage range (4.5V~30V), when from low-voltage change to high voltage,
Therefore the output curent change of first current mirror module 11 can reduce.
Referring to figure 3., the second current mirror module 12 includes a first switch SW1, one the 5th current mirror switch MN5 and one
6th current mirror switch MN6.First switch SW1 has a first end, a second end and a third end.First switch SW1's
First end is electrically connected the first end 12-N1 of the second current mirror module 12.5th current mirror switch MN5 has a first end, one
Second end and a third end.The first end of 5th current mirror switch MN5 is electrically connected an external current source Ibias and the 5th
The third end of the second end of current mirror switch MN5, the 5th current mirror switch MN5 is electrically connected reference voltage Vee.6th current mirror
Switch MN6 has a first end, a second end and a third end.The first end of 6th current mirror switch MN6 is electrically connected the
The third end of one switch SW1.The second end of 6th current mirror switch MN6 is electrically connected the second end of the 5th current mirror switch MN5.
The third end of 6th current mirror switch MN6 is electrically connected reference voltage Vee.
In the present embodiment, the 5th current mirror switch MN5 and the 6th current mirror switch MN6 system constitute current mirror electricity
Road.
Referring to figure 4., output module 13 is defeated including one first output switch MO1, one second output switch MO2, a third
The output of switch MO3 and one the 4th switch MO4 out.
First output switch MO1 has a first end, a second end and a third end.The of first output switch MO1
The output end Out of one end electric connection output module 13.The second end of first output switch MO1 is electrically connected the first output switch
The third end of MO1.Second output switch MO2 has a first end, a second end and a third end.Second output switch MO2
First end be electrically connected first output switch MO1 third end.Third, which exports switch MO3, has a first end, a second end
An and third end.The first end that third exports switch MO3 is electrically connected the third end of the second output switch MO2, third output
The second end of switch MO3 is electrically connected the second end of the second output switch MO2.The third end of third output switch MO3 electrically connects
Meet reference voltage Vee.4th output switch MO4 has a first end, a second end and a third end.4th output switch
The first end of MO4 is electrically connected the output end Out of output module 13.The second end of 4th output switch MO4 is electrically connected second
Export the third end of switch MO2 and the first end of third output switch MO3.The third end of 4th output switch MO4 electrically connects
Meet reference voltage Vee.The second end of second output switch MO2 and the second end of third output switch MO3 are electrically connected second
The second end of 5th current mirror switch MN5 of current mirror module 12 and the second end of the 6th current mirror switch MN6.
In addition, the output end Out of output module 13 is opened by one second impedance R2 with the first of the second current mirror module 12
The second end for closing SW1 is electrically connected.It is, in the present embodiment, first switch SW1 is with the output voltage of output end Out
VOUT is as bias voltage, since output voltage VO UT is a burning voltage, it can be ensured that first switch SW1 can be extremely low defeated
When entering voltage VCC, it can also continue to open.
In the present embodiment, the first output switch MO1, the second output switch MO2 and the second current mirror of output module 13
Primary clustering of the 5th current supply switch MN5 system of module 12 as the output voltage VO UT for establishing voltage-stablizer 1.
In addition, the second output switch MO2 and third output switch MO3 system one AB grades of amplifier of composition, are used for control the
The open and close of four output switch MO4, with the height of the output voltage VO UT of control output end Out.
Referring to figure 5., starting module 14 starts switch SWN1, a diode-connected transistor (diode- including one first
Connected transistor) SWN2 and a third start switch SWN3.
First starts switch SWN1 with a first end, a second end and a third end.First starts switch SWN1's
First end is electrically connected to the first end 14-N1 of starting module 14 by a third impedance R3, and first starts switch the of SWN1
Two ends are electrically connected to the second end of the first switch SW1 of the second current mirror module 12.First starts switch the third end of SWN1
It is electrically connected the second end 14-N2 of starting module 14.
Diode-connected transistor SWN2 has a first end, a second end and a third end.Diode connection crystal
The first end of pipe SWN2 is electrically connected the second of the first end that first starts switch SWN1 and diode-connected transistor SWN2
End, the third end of diode-connected transistor SWN2 are electrically connected the second end 14-N2 of starting module 14.
Third starts switch SWN3 with a first end, a second end and a third end.Third starts switch SWN3's
The third end 14-N3 of first end electric connection starting module 14.The second end that third starts switch SWN3 is electrically connected first and opens
The first end of dynamic switch SWN1 and the first end of diode-connected transistor SWN2, third start switch the third end electricity of SWN3
Property connection starting module 14 second end 14-N2.In the present embodiment, the first end that third starts switch SWN3 passes through the first resistance
Anti- R1 is electrically connected the second end 11-N2 of the first current mirror module.
In the present embodiment, it first SWN1, diode-connected transistor SWN2 and third is started switch starts switch
SWN3 is the function as starting voltage-stablizer 1.In other embodiments, other circuits also be can use and carry out starting voltage-stablizer 1,
In the present invention with no restriction.
Fig. 6 is please referred to, Fig. 6 is schematically shown as the voltage and current schematic diagram of the first current mirror module of Fig. 1.
Dotted line I is the low pressure drop shunt regulator of prior art, the current mirror module only with single-order current mirror switch, In
In input voltage range, the current curve of corresponding input voltage, output impedance, solid line II is then tool of the embodiment of the present invention
There is the low pressure drop shunt regulator of the first current mirror module of high output impedance current source, in input voltage range, correspondence is defeated
Enter the current curve of voltage.The low pressure drop of the first current mirror module 11 with high output impedance of the embodiment of the present invention point
Voltage-stablizer 1 is flowed, the degree of curent change is lower.
(possibility effect of embodiment)
In conclusion low pressure drop shunt regulator in the present invention is opened using the first current mirror of combination low pressure processing procedure
It closes, third current mirror switch and the second current mirror of high pressure manufacturing process switch, the 4th current mirror switch composition have high output impedance
Current mirroring circuit can more reduce low pressure drop shunting to reduce significantly curent change caused by input voltage range
Voltage-stablizer internal consumption energy.In addition, due to combining the current mirror switch with low pressure processing procedure and the electricity with high pressure manufacturing process
Mirror switch is flowed, chip layout more can be flexibly adjusted.
The above description is only an embodiment of the present invention, not to limit to the scope of the patents of the invention.
Claims (11)
1. a kind of low pressure drop shunt regulator, for converting an input voltage as an output voltage, which is characterized in that the low pressure
Dropping shunt regulator includes:
One first current mirror module, including a first end, a second end and a third end, wherein the first current mirror mould
The first end of block is electrically connected the input voltage, and first current mirror module has a high output impedance；
One second current mirror module, including a first end and a second end, wherein the first end of the second current mirror module
It is electrically connected the second end of first current mirror module, the second end of second current mirror module is electrically connected
One reference voltage；And
One output module, including an output end, a first end and a second end, wherein the output end of output module is electrical
Connect the third end of first current mirror module, the output end of the output module and first end difference
It is electrically connected second current mirror module, the second end of the output module is electrically connected the reference voltage.
2. low pressure drop shunt regulator as described in claim 1, which is characterized in that the low pressure drop shunt regulator is also wrapped
It includes:
One starting module, including a first end, a second end and a third end, wherein the first end of the starting module
It is electrically connected the input voltage, the second end of the starting module is electrically connected the reference voltage, the starting mould
The third end of block is electrically connected the first end of second current mirror module.
3. low pressure drop shunt regulator as claimed in claim 2, which is characterized in that the third end of the starting module is logical
The second end for crossing one first impedance and first current mirror module is electrically connected.
4. low pressure drop shunt regulator as described in claim 1, which is characterized in that the output end of the output module is logical
The first end for crossing one second impedance and second current mirror module is electrically connected.
5. low pressure drop shunt regulator as claimed in claim 2, which is characterized in that first current mirror module includes:
One first current mirror switch, has a first end, a second end and a third end, wherein first current mirror is opened
The first end closed is electrically connected the first end of first current mirror module；
One second current mirror switch has a first end, a second end and a third end, the institute of the second current mirror switch
State the third end that first end is electrically connected the first current mirror switch, the second end of the second current mirror switch
It is electrically connected the second end of the first current mirror switch and the third end of second current mirror switch, it is described
The third end of second current mirror switch is electrically connected the second end of first current mirror module；
One third current mirror switch has a first end, a second end and a third end, the institute of the third current mirror switch
State the first end that first end is electrically connected first current mirror module, the second end of the third current mirror switch
It is electrically connected the second end of the first current mirror switch and the second end of second current mirror switch；And
One the 4th current mirror switch has a first end, a second end and a third end, the institute of the 4th current mirror switch
State the third end that first end is electrically connected the third current mirror switch, the second end of the 4th current mirror switch
It is electrically connected the second end of the third current mirror switch, the third end of the 4th current mirror switch is electrically connected
The third end of first current mirror module.
6. low pressure drop shunt regulator as claimed in claim 5, which is characterized in that second current mirror module includes:
One first switch has a first end, a second end and a third end, wherein described the first of the first switch
End is electrically connected the first end of second current mirror module；
One the 5th current mirror switch has a first end, a second end and a third end, the institute of the 5th current mirror switch
State the second end that first end is electrically connected an external current source and the 5th current mirror switch, the 5th current mirror
The third end of switch is electrically connected the reference voltage；
One the 6th current mirror switch has a first end, a second end and a third end, the institute of the 6th current mirror switch
The third end that first end is electrically connected the first switch is stated, the second end of the 6th current mirror switch electrically connects
The second end of the 5th current mirror switch is connect, the third end of the 6th current mirror switch is electrically connected the ginseng
Examine voltage.
7. low pressure drop shunt regulator as claimed in claim 6, which is characterized in that the output module includes:
One first output switch, has a first end, a second end and a third end, wherein the first output switch
The first end is electrically connected the output end of the output module, and the second end of the first output switch electrically connects
Connect the third end of the first output switch；
One second output switch, has a first end, a second end and a third end, wherein the second output switch
The first end is electrically connected the third end of the first output switch；
One third output switch, has a first end, a second end and a third end, wherein the third output switch
The first end is electrically connected the third end of the second output switch, the second end electricity of the third output switch
Property connect the second end of the second output switch, the third end of third output switch is electrically connected the ginseng
Examine voltage；
One the 4th output switch, has a first end, a second end and a third end, wherein the 4th output switch
The first end is electrically connected the output end of the output module, and the second end of the 4th output switch electrically connects
It connects the third end of the second output switch and the first end of third output switch, the 4th output is opened
The third end closed is electrically connected the reference voltage.
8. low pressure drop shunt regulator as claimed in claim 7, which is characterized in that described the second of the second output switch
The second end of end and third output switch is electrically connected the 5th current mirror of second current mirror module
The second end of the second end of switch and the 6th current mirror switch.
9. low pressure drop shunt regulator as claimed in claim 8, which is characterized in that the output end by one second impedance with
The second end of the first switch of second current mirror module is electrically connected.
10. low pressure drop shunt regulator as claimed in claim 9, which is characterized in that the starting module includes:
One first starts switch, and has a first end, a second end and a third end, wherein described first starts switch
The first end is electrically connected to the first end of the starting module by a third impedance, and described first starts switch
The second end is electrically connected to the second end of the first switch of second current mirror module, first starting
The third end of switch is electrically connected the second end of the starting module；
One diode-connected transistor has a first end, a second end and a third end, wherein the diode connection
The first end of transistor is electrically connected the first end that described first starts switch and the diode connection crystal
The second end of pipe, the third end of the diode-connected transistor are electrically connected described the second of the starting module
End；And
One third starts switch, and has a first end, a second end and a third end, wherein what the third started switch
The first end is electrically connected the third end of the starting module, and the second end that the third starts switch electrically connects
The first end of the first end and the diode-connected transistor that described first starts switch is connect, the third starting is opened
The third end closed is electrically connected two end of the starting module.
11. low pressure drop shunt regulator as claimed in claim 5, which is characterized in that the first current mirror switch and institute
State third current mirror switch be respectively one with low pressure processing procedure P type metal oxide semiconductor field-effect transistor, described second
Current mirror switch and the 4th current mirror switch are that a P type metal oxide semiconductor field with high pressure manufacturing process is imitated respectively
Transistor.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115202431A (en) * | 2022-07-22 | 2022-10-18 | 珠海格力电器股份有限公司 | Low dropout regulator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101149629A (en) * | 2006-09-18 | 2008-03-26 | 沛亨半导体股份有限公司 | Current generating apparatus and feedback-controlled system utilizing the current generating apparatus |
| CN101515184A (en) * | 2008-02-21 | 2009-08-26 | 联发科技股份有限公司 | Low drop out voltage regulator |
| CN104950968A (en) * | 2014-03-24 | 2015-09-30 | 奇景光电股份有限公司 | Low-dropout linear voltage regulator |
-
2018
- 2018-05-25 CN CN201810516123.9A patent/CN110531826B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101149629A (en) * | 2006-09-18 | 2008-03-26 | 沛亨半导体股份有限公司 | Current generating apparatus and feedback-controlled system utilizing the current generating apparatus |
| CN101515184A (en) * | 2008-02-21 | 2009-08-26 | 联发科技股份有限公司 | Low drop out voltage regulator |
| CN104950968A (en) * | 2014-03-24 | 2015-09-30 | 奇景光电股份有限公司 | Low-dropout linear voltage regulator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115202431A (en) * | 2022-07-22 | 2022-10-18 | 珠海格力电器股份有限公司 | Low dropout regulator |
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