CN107272795B - Voltage-stablizer - Google Patents
Voltage-stablizer Download PDFInfo
- Publication number
- CN107272795B CN107272795B CN201610212988.7A CN201610212988A CN107272795B CN 107272795 B CN107272795 B CN 107272795B CN 201610212988 A CN201610212988 A CN 201610212988A CN 107272795 B CN107272795 B CN 107272795B
- Authority
- CN
- China
- Prior art keywords
- voltage
- circuit
- electric current
- current source
- output voltage
- 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.)
- Active
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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
A kind of voltage-stablizer includes driving circuit, amplifying circuit, the first current source circuit and the second current source circuit.Driving circuit is to receive input voltage and provide output voltage.First current source circuit is to provide the first electric current to amplifying circuit.Second current source circuit is to provide the second electric current to amplifying circuit according to output voltage when output voltage deviates predeterminated voltage.Amplifying circuit is to according to output voltage and the third current control driving circuit.Third electric current is the summation of the first electric current and the second electric current.
Description
Technical field
The present invention relates to a kind of voltage-stablizers, and especially with regard to a kind of voltage-stablizer stabilized the output voltage.
Background technique
Linear voltage decreasing voltage regulator circuit (low dropout regulator, LDO) is answered extensively in the power supply of electronic system
With, comprising auto electronic, mobile phone, notebook computer and personal digital assistant (personal digital assistant,
PDA) etc..Especially the low-power consumption of auto electronic equipments, high-effect and high reliability demand cause linear voltage decreasing voltage regulator circuit to set
It counts more difficult.When the output power supply of linear voltage decreasing voltage regulator circuit is switched to another execution pattern from a kind of execution pattern, line
The loading demand of property decompression voltage regulator can quickly change, and cause output voltage that of short duration pulse phenomenon occurs.Due to significantly
Voltage change circuit may be damaged, therefore the mechanism stabilized the output voltage is particularly significant.
Summary of the invention
One embodiment of the present invention is to provide a kind of voltage-stablizer.Voltage-stablizer includes driving circuit, amplifying circuit, the first electricity
Current source circuit and the second current source circuit.Driving circuit is to receive input voltage and provide output voltage.First current source electricity
Road is to provide the first electric current to amplifying circuit.Second current source circuit to when output voltage deviate predeterminated voltage when, foundation
Output voltage provides the second electric current to amplifying circuit.Amplifying circuit is to according to output voltage and third current control driving electricity
Road.Third electric current is the summation of the first electric current and the second electric current.
Second embodiment of the present invention is to provide a kind of voltage-stablizer.Voltage-stablizer includes driving circuit, amplifying circuit, first
Current source circuit and the second current source circuit.Driving circuit has input, output end and control terminal, and input terminal is defeated to receive
Enter voltage, output end is to provide output voltage.Amplifying circuit has first input end, output end, output end coupling driving electricity
The control terminal on road.The first input end of first current source circuit coupling amplifying circuit and to provide the first electric current to amplifying electricity
Road.Second current source circuit couple amplifying circuit first input end and to when output voltage deviate predeterminated voltage when, foundation
Output voltage provides the second electric current to amplifying circuit.Amplifying circuit is to according to output voltage and third current control driving electricity
Road.Third electric current is the summation of the first electric current and the second electric current.
In conclusion being designed to provide for the disclosure stabilizes the output voltage.The voltage-stablizer that this case provides can be according to output
The degree of voltage deviation predeterminated voltage come adjust amplifying circuit control driving circuit speed.When departure degree height, amplifying circuit
Biggish electric current will be received to accelerate to control driving circuit, be predeterminated voltage so as to rapidly adjusting output voltage.Therefore, this hair
Bright voltage-stablizer can effectively promote the stability of output voltage.
Detailed description of the invention
For above and other objects of the present invention, feature, advantage and embodiment can be clearer and more comprehensible, institute's accompanying drawings are said
It is bright as follows:
Fig. 1 is the schematic diagram for the voltage-stablizer that an embodiment is painted according to the present invention；
Fig. 2 is the schematic diagram for the voltage-stablizer that an embodiment is painted according to the present invention；And
Fig. 3 is the schematic diagram for the voltage-stablizer that an embodiment is painted according to the present invention.
[symbol of figure briefly describes]
110,120: current source circuit
130: driving circuit
140: amplifying circuit
150: load
160: feed circuit
1201,1401: first input end
1202,1402: the second input terminal
1203,1302,1404: output end
1301: input terminal
1303: control terminal
1403: third input terminal
I1、I2: electric current
VIN: input voltage
VOUT: output voltage
VG: control voltage
VREF1、VREF2: reference voltage
VFB: feedback voltage
Specific embodiment
The following disclosure provides many different embodiments or illustration to implement feature of the invention.The disclosure is in different examples
Reference numerical chracter and/or letter may be repeated in card, these are repeated all in order to simplify and illustrate, itself is simultaneously not specified following
Relationship in discussion between different embodiments and/or configuration.
About " coupling " used herein or " connection ", can refer to two or more elements mutually directly make entity or
It is in electrical contact, or body or in electrical contact is mutually put into effect indirectly, and " coupling " or " connection " also can refer to two or more element phases
Interoperability or movement.
Refering to fig. 1, Fig. 1 is a kind of schematic diagram for voltage-stablizer that an embodiment is painted according to the present invention.Voltage-stablizer can be applied
In auto electronic, mobile phone, notebook computer and personal digital assistant (personal digital assistant, PDA) etc.
Electronic device, however, the present invention is not limited thereto.
Voltage-stablizer includes current source circuit 110,120 driving circuit 130 of current source circuit and amplifying circuit 140.
Driving circuit 130 is to receive input voltage V via input terminal 1301IN, and output is provided via output end 1302
Voltage VOUTTo load 150.
Amplifying circuit 140 has first input end 1401, the second input terminal 1402, third input terminal 1403 and output end
1404, output end 1404 couples the control terminal 1303 of driving circuit 130.Amplifying circuit 140 is to according to output voltage VOUTControl
Driving circuit 130.Specifically, the second input terminal 1402 of amplifying circuit 140 is to receive reference voltage VREF2, third input
End 1403 is to receive feedback voltage VFB, above-mentioned feedback voltage VFBOutput voltage V can be passed throughOUTCoupling feed circuit 160 (such as
Bleeder circuit) it generates.Amplifying circuit 140 is to amplify feedback voltage VFBWith reference voltage VREF2Between voltage difference, and then produce
Raw control voltage VGOutput voltage V is provided to control driving circuit 130OUT。
Current source circuit 110 and current source circuit 120 couple the first input end 1401 of amplifying circuit 140.Current source electricity
Road 110 is to provide electric current I1To the first input end 1401 of amplifying circuit 140, and current source circuit 120 is to provide electric current I2
To the first input end 1401 of amplifying circuit 140.In other words, the first input end 1401 of amplifying circuit 140 is to receive electric current
I1With I2Summation.It is noted that the electric current I that current source circuit 110 provides1For fixed current value, and current source circuit
The 120 electric current I provided2It is then according to output voltage VOUTIt determines.Therefore, as output voltage VOUTDeviation predeterminated voltage (such as 1 volt
It is special) when, the corresponding adjustment electric current I of current source circuit 1202Current value adjust the bandwidth and reaction speed of amplifying circuit 140, borrow
To control driving circuit 130 for the voltage adjustment speed of output voltage.
In some embodiments, current source circuit 120 is also to according to output voltage VOUTWith reference voltage VREF1Between
Voltage difference delta V1Electric current I is provided2To amplifying circuit 140.As shown in Figure 1, the first input end 1201 of current source circuit 120 to
Receive reference voltage VREF1, the second input terminal 1202 is to receive output voltage VOUT, output end 1203 is to provide electric current I2Extremely
Amplifying circuit 140.It is noted that in the present embodiment, reference voltage VREF1It can be above-mentioned predeterminated voltage.Work as voltage difference
ΔV1Increase, then current source circuit 120 provides increased electric current I2To amplifying circuit 140.Due to amplifying circuit 140 bandwidth just
Than in the received electric current of first input end 1401, electric current I2Increase the bandwidth and reaction speed that can promote amplifying circuit 140.Cause
This, amplifying circuit 140 accelerates control driving circuit 130 to increase or decrease output voltage VOUTTo adjust output voltage VOUTIt is default
Voltage.
In conclusion working as output voltage VOUTGreater than reference voltage VREF1When, amplifying circuit 140 receives fixed electric current I1With
Increased electric current I2To accelerate control driving circuit 130 to reduce the load current of output end 1302, output voltage VOUTTherefore it drops
It is low.In output voltage VOUTReduce (voltage difference delta V1Reduce) during, current source circuit 120 is exported to the electricity of amplifying circuit 140
Flow I2It reduces.Under stable state, output voltage VOUTDrop back to reference voltage VREF1(that is, predeterminated voltage), electric current I2Level off to zero, amplification
The equivalent upper reception electric current I of circuit 1401To control driving circuit 130.
Conversely, working as output voltage VOUTLess than reference voltage VREF1When, amplifying circuit 140 receives fixed electric current I1With increase
Electric current I2To accelerate control driving circuit 130 to increase the load current of output end 1302, output voltage VOUTTherefore it increases.?
Output voltage VOUTIncrease (voltage difference delta V1Reduce) during, current source circuit 120 is exported to the electric current I of amplifying circuit 1402Subtract
It is few.Under stable state, output voltage VOUTRise back reference voltage VREF1(i.e. predeterminated voltage), electric current I2Level off to zero, amplifying circuit 140 etc.
Electric current I is received in effect1To control driving circuit 130.
In some embodiments, reference voltage VREF1It can be with reference voltage VREF2It is identical or different.
In this way, work as output voltage VOUTWhen deviateing predeterminated voltage, current source circuit 120 provides additional electric current I2Extremely
For amplifying circuit 140 to promote the bandwidth and reaction speed of amplifying circuit 140, the voltage so as to increasing driving circuit 130 adjusts speed
Degree.Therefore, voltage-stablizer of the invention can promptly adjust too high or too low output voltage to predeterminated voltage, defeated so as to being promoted
Voltage V outOUTStability.
Alternatively, in further embodiments, the received reference voltage V of first input end 1201 of current source circuit 120REF1
It may differ from the predeterminated voltage of 130 output end 1302 of driving circuit, and the second input terminal 1202 can be used to receive feedback voltage
VFB(Fig. 1 is not painted), rather than output voltage VOUT.In the case, current source circuit 120 is also to according to feedback voltage VFBWith
Reference voltage VREF1Between voltage difference delta V2Electric current I is provided2.It is noted that in the present embodiment, feedback voltage VFBIt is
According to output voltage VOUTAnd it is produced by feed circuit 160 (such as bleeder circuit), therefore feedback voltage VFBWith output voltage
VOUTBetween there are corresponding relationships.When stable state, feedback voltage VFBLevel off to reference voltage VREF1, output voltage VOUTIt levels off to default electric
Pressure, therefore reference voltage VREF1Corresponding relationship between predeterminated voltage can be by feedback voltage VFBWith output voltage VOUTBetween
Corresponding relationship determines.As above-mentioned, as voltage difference delta V2Increase, then current source circuit 120 provides increased electric current I2To amplifying circuit
140.Therefore, amplifying circuit 140 accelerates control driving circuit 130 to increase or decrease output voltage VOUT, so as to adjusting output voltage
VOUTFor predeterminated voltage.
In conclusion working as output voltage VOUTWhen greater than predeterminated voltage, feedback voltage VFBGreater than reference voltage VREF1, amplification
Circuit 140 receives fixed electric current I1With increased electric current I2To accelerate control driving circuit 130 to reduce the load of output end 1302
Electric current, output voltage VOUTTherefore it reduces.In output voltage VOUTReduce (feedback voltage VFBIt reduces, voltage difference delta V2Reduce) phase
Between, current source circuit 120 is exported to the electric current I of amplifying circuit 1402It reduces.Under stable state, feedback voltage VFBDrop back to reference voltage
VREF1(that is, output voltage VOUTDrop back to predeterminated voltage), electric current I2Level off to zero, the equivalent upper reception electric current I of amplifying circuit 1401With
Control driving circuit 130.
Conversely, working as output voltage VOUTWhen less than predeterminated voltage, feedback voltage VFBLess than reference voltage VREF1, amplifying circuit
140 receive fixed electric current I1With increased electric current I2To accelerate control driving circuit 130 to increase the load electricity of output end 1302
Stream, output voltage VOUTTherefore it increases.In output voltage VOUTIncrease (feedback voltage VFBIt increases, voltage difference delta V2Reduce) phase
Between, current source circuit 120 is exported to the electric current I of amplifying circuit 1402Also it reduces.Under stable state, feedback voltage VFBRise back reference voltage
VREF1(that is, output voltage VOUTRise back predeterminated voltage), electric current I2Level off to zero, the equivalent upper reception electric current I of amplifying circuit 1401With
Control driving circuit 130.
Referring to Fig.2, Fig. 2 is a kind of schematic diagram for voltage-stablizer that an embodiment is painted according to the present invention.The voltage-stablizer packet of Fig. 2
Containing current source circuit 110 as shown in Figure 1, current source circuit 120 and amplifying circuit 140, wherein driving circuit 230 can be crystal
Pipe M1, feed circuit 260 can connect the bleeder circuit to be formed for resistor R1, R2.Therefore, output voltage VOUTWith feedback voltage
VFBCorresponding relationship can be determined by bleeder circuit.As above-mentioned, in current source circuit 120 according to output voltage VOUTWith reference voltage
VREF1Between voltage difference delta V1Electric current I is provided2Embodiment in, when stable state, electric current I2Level off to zero, output voltage VOUTApproach
In reference voltage VREF1(i.e. predeterminated voltage).In some embodiments, when stable state, reference voltage VREF2Voltage value be greater than it is anti-
Feedthrough voltage VFBVoltage value.
It is a kind of schematic diagram for voltage-stablizer 300 that an embodiment is painted according to the present invention refering to Fig. 3, Fig. 3.The pressure stabilizing of Fig. 3
Device 300 includes driving circuit 130 and amplifying circuit 140 as shown in Figure 1, and wherein current source circuit 310 can be to provide fixed electricity
Flow I1Current source, current source circuit 320 can be differential amplifier circuit.The first input end 3201 of current source circuit 320 to
Receive reference voltage VREF1, the second input terminal 3202 is to receive feedback voltage VFB(or output voltage VOUT).Current source circuit
320 to amplify feedback voltage VFB(or output voltage VOUT) and reference voltage VREF1Between voltage difference delta V2(or voltage difference delta
V1) to provide electric current I via output end 32032To amplifying circuit 140.It is noted that transistor MP1、MP2Size it is identical
(such as channel size is identical), and it is respectively coupled to current source Ib.Therefore, work as feedback voltage VFB(or output voltage VOUT) level off to
Reference voltage VREF1When, the electric current I of the output of current source circuit 3202Level off to zero.In this embodiment, when the second input terminal 3202
To receive feedback voltage VFBWhen, reference voltage VREF2Voltage value will be set greater than reference voltage VREF1Voltage value.
In fact, amplifying circuit 140 can be error amplifier.Transistor M1, MP1、MP2It can be N-type OH crystal
Manage (N-MOSFET), p-type metal-oxide half field effect transistor (P-MOSFET), bipolar junction transistor (BJT) or any equivalent
Transistor, the disclosure are not limited thereto.
In conclusion the present invention provides the voltage-stablizer stabilized the output voltage.Voltage-stablizer provided by the invention can be according to output
Voltage deviation predeterminated voltage degree adjustment amplifying circuit 140 bandwidth and reaction speed, so as to control driving circuit 130 for
The voltage adjustment speed of output voltage.When departure degree height, then amplifying circuit 140 accelerates control driving circuit 130 defeated to adjust
Voltage is predeterminated voltage out.Therefore, voltage-stablizer of the invention can effectively promote the stability of output voltage.
Although the present invention is disclosed above with embodiment, however, it is not to limit the invention, the skill of any this field
Art personnel, without departing from the spirit and scope of the present invention, when can various changes can be made and modification, therefore protection scope of the present invention
It should be subject to the later appended scope of the claimed protection applied for a patent.
Symbol description
110,120,310,320: current source circuit
130,230: driving circuit
140: amplifying circuit
150: load
160,260: feed circuit
1201,1401,3201: first input end
1202,1402,3202: the second input terminal
1203,1302,1404,3203: output end
1301: input terminal
1303: control terminal
1403: third input terminal
I1、I2: electric current
VIN: input voltage
VOUT: output voltage
VG: control voltage
VREF1、VREF2: reference voltage
VFB: feedback voltage
R1, R2: resistor
M1、MP1、MP2: transistor
300: voltage-stablizer
Ib: current source
Claims (10)
1. a kind of voltage-stablizer, includes:
One drive circuit, to receive an input voltage and provide an output voltage；
One amplifying circuit；
One first current source circuit, to provide one first electric current to the amplifying circuit；And
One second current source circuit, to provide one the according to the output voltage when the output voltage deviates a predeterminated voltage
Two electric currents are to the amplifying circuit, and wherein the current value of second electric current is determined by second current source according to the output voltage；
Wherein, the amplifying circuit to be according to the output voltage and the third current control driving circuit, the third electric current
The summation of first electric current and second electric current.
2. voltage-stablizer according to claim 1, wherein second current source circuit is also to according to the output voltage and one
A first voltage difference between reference voltage provides second electric current, which is the predeterminated voltage.
3. voltage-stablizer according to claim 2, when the output voltage is more than or less than the reference voltage, second electric current
Source circuit increases by second electric current so that the amplifying circuit accelerates the control driving circuit to reduce the output voltage.
4. voltage-stablizer according to claim 1, wherein second current source circuit is also to according to a feedback voltage and one
A second voltage difference between reference voltage provides second electric current, which corresponds to the output voltage, the reference voltage
The corresponding predeterminated voltage.
5. voltage-stablizer according to claim 4, when the feedback voltage is more than or less than the reference voltage, second electric current
Source circuit increases by second electric current so that the amplifying circuit accelerates the control driving circuit to reduce the output voltage.
6. voltage-stablizer according to claim 1, wherein the amplifying circuit is to amplify a feedback voltage and a reference voltage
A second voltage difference to control the driving circuit, wherein the feedback voltage corresponds to the output voltage.
7. a kind of voltage-stablizer, includes:
One drive circuit has an input terminal, an output end and a control terminal, which, should to receive an input voltage
Output end is to provide an output voltage；
One amplifying circuit, has a first input end, an output end, which couples the control terminal of the driving circuit；
One first current source circuit couples the first input end of the amplifying circuit, and first current source circuit is to provide this
First electric current is to the amplifying circuit；And
One second current source circuit couples the first input end of the amplifying circuit, and second current source circuit is defeated to work as this
Out when one predeterminated voltage of voltage deviation, one second electric current is provided to the amplifying circuit according to the output voltage, wherein second electricity
The current value of stream is determined by second current source according to the output voltage；
Wherein, the amplifying circuit to be according to the output voltage and the third current control driving circuit, the third electric current
The summation of first electric current and second electric current.
8. voltage-stablizer according to claim 7, wherein second current source circuit is also to according to the output voltage and one
A first voltage difference between reference voltage provides second electric current, which is the predeterminated voltage.
9. voltage-stablizer according to claim 7, wherein second current source circuit is also to according to a feedback voltage and one
A second voltage difference between reference voltage provides second electric current, which corresponds to the output voltage, the reference voltage
The corresponding predeterminated voltage.
10. voltage-stablizer according to claim 7, wherein the amplifying circuit also has one second input terminal and a third defeated
Enter end, second input terminal is to receive a reference voltage, and the third input terminal is to receive a feedback voltage, the amplifying circuit
To amplify a second voltage difference of the feedback voltage and the reference voltage to control the driving circuit, the wherein feedback voltage pair
It should output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610212988.7A CN107272795B (en) | 2016-04-07 | 2016-04-07 | Voltage-stablizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610212988.7A CN107272795B (en) | 2016-04-07 | 2016-04-07 | Voltage-stablizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107272795A CN107272795A (en) | 2017-10-20 |
| CN107272795B true CN107272795B (en) | 2019-03-15 |
Family
ID=60051698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610212988.7A Active CN107272795B (en) | 2016-04-07 | 2016-04-07 | Voltage-stablizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107272795B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114460993A (en) * | 2020-11-09 | 2022-05-10 | 扬智科技股份有限公司 | Voltage regulator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5014194B2 (en) * | 2008-02-25 | 2012-08-29 | セイコーインスツル株式会社 | Voltage regulator |
| CN102566633B (en) * | 2010-12-07 | 2014-02-12 | 华邦电子股份有限公司 | Low-voltage-difference voltage stabilizer |
| US8716993B2 (en) * | 2011-11-08 | 2014-05-06 | Semiconductor Components Industries, Llc | Low dropout voltage regulator including a bias control circuit |
| CN102945059B (en) * | 2012-11-21 | 2016-03-16 | 上海华虹宏力半导体制造有限公司 | Low pressure difference linear voltage regulator and limit method of adjustment thereof |
| CN103218003B (en) * | 2013-04-26 | 2015-06-10 | 无锡中星微电子有限公司 | Low-dropout voltage stabilizer with multiple power sources input |
| CN105446403A (en) * | 2014-08-14 | 2016-03-30 | 登丰微电子股份有限公司 | Low dropout linear voltage regulator |
-
2016
- 2016-04-07 CN CN201610212988.7A patent/CN107272795B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107272795A (en) | 2017-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2639899B1 (en) | Dc coupling type laser drive circuit and drive method for semiconductor laser element | |
| CN106575865B (en) | The method of voltage regulator and the short-circuit protection in offer voltage regulator | |
| EP2961064B1 (en) | Robust sink/source output stage and control circuit | |
| TWI600996B (en) | Regulator | |
| US8884594B2 (en) | Voltage regulator | |
| JP2008276477A (en) | Voltage regulator | |
| US8587380B2 (en) | Saturation protection of a regulated voltage | |
| CN108574445B (en) | Motor driving circuit | |
| CN112363561B (en) | Linear voltage regulator and soft start method thereof | |
| JP2017134743A (en) | Regulator circuit | |
| CN101620449A (en) | Voltage stabilizing device and flash memory | |
| US10558232B2 (en) | Regulator circuit and control method | |
| CN107272795B (en) | Voltage-stablizer | |
| CN108631664B (en) | Motor driving circuit | |
| US8981820B2 (en) | Driver circuit | |
| US8816774B2 (en) | Power amplifier system | |
| CN102981537A (en) | High-voltage stabilizing circuit with feedback circuit | |
| CN110221647A (en) | A kind of voltage-stablizer | |
| KR20130024556A (en) | Power amplifier system | |
| CN110297515A (en) | Voltage regulator | |
| CN101483425B (en) | Low power differential signal transmission apparatus | |
| US20130021094A1 (en) | Circuit for optimizing a power management system during varying load conditions | |
| CN107112986A (en) | Differential comparator | |
| JP2014175983A (en) | Amplification circuit | |
| KR101109242B1 (en) | Apparatus for Power Amplification |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |