CN105652941B - It is a kind of to reduce the device of pressure drop by adjusting dividing ratios - Google Patents
It is a kind of to reduce the device of pressure drop by adjusting dividing ratios Download PDFInfo
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- CN105652941B CN105652941B CN201610146546.7A CN201610146546A CN105652941B CN 105652941 B CN105652941 B CN 105652941B CN 201610146546 A CN201610146546 A CN 201610146546A CN 105652941 B CN105652941 B CN 105652941B
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- resistance
- adjustable resistance
- dividing ratios
- adjustable
- vout
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—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
- G05F1/561—Voltage to current converters
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- 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
The present invention relates to a kind of the device of pressure drop is reduced by adjusting dividing ratios, circuit is adjusted including sample circuit and dividing ratios, sample circuit is used to acquire the output voltage Vout of linear voltage regulator, and dividing ratios adjust circuit and are used to adjust dividing ratios in bleeder mechanism according to the collection result of sample circuit.The present invention solves the difference that existing linear voltage regulator system can not be between automatic identification Vout and Vout ', the technical issues of can not eliminating because of the negative effect next to chip belt of difference dynamic change, the present invention samples the electric current or pressure difference of output end by sample circuit, sampled result is output to adjusting unit, circuit is adjusted by adjusting dividing ratios to change Vout voltage value so that Vout ' DC voltage values keep stablizing under various loading conditions.
Description
Technical field
It is especially a kind of to reduce the device of pressure drop by adjusting dividing ratios the present invention relates to chip field.
Background technology
Referring to Fig. 1, existing linear voltage regulator controls output power device Mout by amplifier, exports burning voltage
Vout adjusts output power device Mout, it is ensured that voltage-stablizer is exported in different loads by negative-feedback and amplifier
Constant voltage value Vout, and can guarantee that certain current output capability, R1 and R2 constitute the bleeder mechanism of output voltage, point
The ratio of pressure is determined according to the ratio of reference voltage Vref and output voltage Vout.
In existing linear voltage regulator system, the DC output voltage Vout at linear voltage regulator end and the voltage of load end
There are certain differences between Vout ', the reason is that pressurizer system generally has multiple load blocks, the physical location of each module
There are certain physical distance, load to be connect by metal wire with voltage-stablizer between difference and voltage-stablizer, metal wire is deposited in practice
In dead resistance Rp, electric current just will produce pressure drop when flowing through metal connecting line, i.e. difference between Vout and Vout ', while this
Difference can change as load current changes so that and Vout ' DC voltage values can not be stablized in desired value, and with load electricity
The size of stream generates fluctuation, damages the performance of load blocks.
However, existing linear voltage regulator system can not be between automatic identification Vout and Vout ' difference, therefore can not yet
It eliminates because of the negative effect that difference dynamic change carrys out chip belt.
Invention content
The present invention is to solve above-mentioned technical problem existing for background technology, and provide one kind reduces by adjusting dividing ratios
The device of pressure drop.
Technical solution of the invention is：
It is a kind of to reduce the device of pressure drop by adjusting dividing ratios, it is characterized in that：Including sample circuit and partial pressure
Proportion adjustment circuit,
The sample circuit is used to acquire the output voltage Vout of linear voltage regulator, and the dividing ratios adjust circuit and are used for
Dividing ratios in bleeder mechanism are adjusted according to the collection result of sample circuit.
Above-mentioned sample circuit includes device Msp, and the device Msp is identical as output power device Mout types, output work
The size ratio of rate device Mout and device Msp is (10000-10)：1, it includes that simulation numeral turns that the dividing ratios, which adjust circuit,
The grid and amplifier of the grid of converter circuit ADC and adjustable resistance R1, the device Msp and output power device Mout
Output end connects, and the source electrode of the device Msp meets Vdd, and the drain electrode of the device Msp is with analog-digital converter circuit ADC's
One end connects, and the analog-digital converter circuit ADC adjusts the resistance value of adjustable resistance R1.
Above-mentioned sample circuit includes device Msp, and the device Msp is identical as output power device Mout types, output work
The size ratio of rate device Mout and device Msp is (10000-10)：1, it includes adjustable resistance R2 that the dividing ratios, which adjust circuit,
The grid of the device Msp is connect with the output end of the grid of output power device Mout and amplifier, the device Msp's
Source electrode meets Vdd, and the drain electrode of the device Msp is connect with one end of analog-digital converter circuit ADC, the Analog-digital Converter
Device circuit ADC adjusts the resistance value of adjustable resistance R2.
Above-mentioned sample circuit includes device Msp, and the device Msp is identical as output power device Mout types, output work
The size ratio of rate device Mout and device Msp is (10000-10)：1, it includes fixed current source that the dividing ratios, which adjust circuit,
I1 and transistor M1, the drain electrode of the device Msp is connect with the grid of one end of fixed current source I1 and transistor M1, described
The source electrode of transistor M1 is connect with the drain electrode of output power device Mout, the drain electrode adjustable resistance R2 connections of the transistor M1.
Above-mentioned sample circuit includes resistance R3 and resistance R4, the dividing ratios adjust circuit include amplifier two, it is adjustable
One end of resistance R1 and adjustable resistance R2, adjustable resistance R1 are connected with the drain electrode of output power device Mout, adjustable resistance R1's
The other end is connect with one end of adjustable resistance R2, the other end ground connection of adjustable resistance R2；One end of the resistance R3 is connected to negative
It carries on the metal wire between voltage-stablizer, the other end of the resistance R3 is connect with one end of resistance R4, and the resistance R4's is another
One end is grounded, and an input terminal of the amplifier two is connected between adjustable resistance R1 and adjustable resistance R2, the amplifier
Two another input terminal is connected between resistance R3 and resistance R4, and the output end of the amplifier two adjusts adjustable resistance R1,
The ratio of resistance R3 and resistance R4 are equal with adjustable resistance R1 and the initial proportion of adjustable resistance R2.
Above-mentioned sample circuit includes resistance R3 and resistance R4, the dividing ratios adjust circuit include amplifier two, it is adjustable
One end of resistance R1 and adjustable resistance R2, adjustable resistance R1 are connected with the drain electrode of output power device Mout, adjustable resistance R1's
The other end is connect with one end of adjustable resistance R2, the other end ground connection of adjustable resistance R2；One end of the resistance R3 is connected to negative
It carries on the metal wire between voltage-stablizer, the other end of the resistance R3 is connect with one end of resistance R4, and the resistance R4's is another
One end is grounded, and an input terminal of the amplifier two is connected between adjustable resistance R1 and adjustable resistance R2, the amplifier
Two another input terminal is connected between resistance R3 and resistance R4, and the output end of the amplifier two adjusts adjustable resistance R2,
The ratio of resistance R3 and resistance R4 are equal with adjustable resistance R1 and the initial proportion of adjustable resistance R2.
Above-mentioned device Msp is PMOS tube or NMOS tube.
Advantage for present invention：
The present invention samples the electric current or pressure difference of output end by sample circuit, and it is single that sampled result is output to adjusting
Member adjusts circuit by adjusting dividing ratios to change Vout voltage value so that Vout ' DC voltage values are in various loading conditions
Lower holding is stablized.
Description of the drawings
Fig. 1 is existing linear voltage regulator structural schematic diagram；
Fig. 2 is the structure principle chart of the present invention；
Fig. 3 is the structure principle chart of the embodiment of the present invention one；
Fig. 4 is the structure principle chart of the embodiment of the present invention two；
Fig. 5 is the structure principle chart of the embodiment of the present invention three；
Fig. 6 is the structure principle chart of the embodiment of the present invention four.
Specific embodiment
Referring to Fig. 3.The DC output voltage Vout of linear voltage regulator and the ratio of reference voltage Vref and feedback partial pressure electricity
The ratio of road R1 and R2 are related, and the embodiment of the present invention one is used with output power device Mout same types but size is at certain
The device Msp of ratio, as output load current Sampling device, analog-digital converter circuit ADC is together with divider resistance R1
It forms dividing ratios and adjusts circuit, so that it may with easily according to the size of output load current, by adjusting the ratio of R1 and R2,
Output end voltage Vout is adjusted, so that load terminal voltage Vout ' is kept fixed electricity under different load current conditions
Pressure value makes load blocks performance stablize.ADC and resistance are existing units.Such as：When load current becomes larger, dead resistance Rp
It remains unchanged, therefore the difference of Vout ' and Vout can become larger, Vout ' can become smaller, sample what electric current became larger by Msp
After information, this information is converted into signal in order to control according to practical situations by ADC, dividing ratios is adjusted, so that R1 is become larger, then
Vout voltage value increases, and makes up because of the difference that Vout ' becomes smaller when electric current becomes larger so that Vout ' stablizes.Similarly, if load
Electric current becomes smaller, this system still can keep Vout ' to stablize.
Referring to Fig. 4, the embodiment of the present invention is second is that using with output power device Mout same types but size is at certain
The device Msp of ratio, as output load current Sampling device, analog-digital converter circuit ADC is together with divider resistance R2
It forms dividing ratios and adjusts circuit, so that it may with easily according to the size of output load current, by adjusting the ratio of R1 and R2,
Output end voltage Vout is adjusted, so that load terminal voltage Vout ' is kept fixed electricity under different load current conditions
Pressure value makes load blocks performance stablize.ADC and resistance are existing units.
Referring to Fig. 5, the embodiment of the present invention three is using with output power device Mout same types but size is at one
The device Msp of certainty ratio, as output load current Sampling device, fixed current source I1 forms intrinsic standoff ratio together with transistor M1
Example adjusts circuit, so that it may easily to be come by adjusting the ratio of M1 equivalent resistances and R2 according to the size of output load current
Output end voltage Vout is adjusted, so that load terminal voltage Vout ' is kept fixed voltage under different load current conditions
Value makes load blocks performance stablize.Current source and resistance are existing units.
Referring to Fig. 6, the embodiment of the present invention four is to use resistance R3, R4, as Vout and Vout ' voltage difference sampling
The ratio and R1 of device, R3 and R4 and being in equal proportions for R2, amplifier 2 form dividing ratios together with divider resistance R1 and adjust electricity
Road, so that it may with easily according to Vout and Vout ' voltage difference, by adjusting the ratio of R1 and R2, to adjust output end voltage
Vout makes load blocks so that load terminal voltage Vout ' is kept fixed voltage value under different load current conditions
It can stablize.Amplifier two and resistance are existing units.
It is PMOS tube or NMOS tube that metal-oxide-semiconductor in above example, which is all made of,.
Claims (4)
1. a kind of reducing the device of pressure drop by adjusting dividing ratios, it is characterised in that：Including sample circuit and dividing ratios tune
Economize on electricity road；
The sample circuit includes device Msp, and the device Msp is identical as output power device Mout types, output power device
The size ratio of part Mout and device Msp is (10000-10)：1, the dividing ratios adjust circuit include fixed current source I1 and
Transistor M1, the drain electrode of the device Msp are connect with the grid of one end of fixed current source I1 and transistor M1, the crystal
The source electrode of pipe M1 is connect with the drain electrode of output power device Mout, the drain electrode adjustable resistance R2 connections of the transistor M1.
2. according to claim 1 reduce the device of pressure drop by adjusting dividing ratios, it is characterised in that：The device
Msp is PMOS tube or NMOS tube.
3. a kind of reducing the device of pressure drop by adjusting dividing ratios, it is characterised in that：Including sample circuit and dividing ratios tune
Economize on electricity road；
The sample circuit includes resistance R3 and resistance R4, and it includes amplifier two, adjustable resistance that the dividing ratios, which adjust circuit,
One end of R1 and adjustable resistance R2, adjustable resistance R1 are connected with the drain electrode of output power device Mout, and adjustable resistance R1's is another
End is connect with one end of adjustable resistance R2, the other end ground connection of adjustable resistance R2；One end of the resistance R3 be connected to load with
On metal wire between voltage-stablizer, the other end of the resistance R3 is connect with one end of resistance R4, the other end of the resistance R4
Ground connection, an input terminal of the amplifier two are connected between adjustable resistance R1 and adjustable resistance R2, the amplifier two
Another input terminal is connected between resistance R3 and resistance R4, and the output end of the amplifier two adjusts adjustable resistance R1, resistance
The ratio of R3 and resistance R4 are equal with adjustable resistance R1 and the initial proportion of adjustable resistance R2.
4. a kind of reducing the device of pressure drop by adjusting dividing ratios, it is characterised in that：Including sample circuit and dividing ratios tune
Economize on electricity road；
The sample circuit includes resistance R3 and resistance R4, and it includes amplifier two, adjustable resistance that the dividing ratios, which adjust circuit,
One end of R1 and adjustable resistance R2, adjustable resistance R1 are connected with the drain electrode of output power device Mout, and adjustable resistance R1's is another
End is connect with one end of adjustable resistance R2, the other end ground connection of adjustable resistance R2；One end of the resistance R3 be connected to load with
On metal wire between voltage-stablizer, the other end of the resistance R3 is connect with one end of resistance R4, the other end of the resistance R4
Ground connection, an input terminal of the amplifier two are connected between adjustable resistance R1 and adjustable resistance R2, the amplifier two
Another input terminal is connected between resistance R3 and resistance R4, and the output end of the amplifier two adjusts adjustable resistance R2, resistance
The ratio of R3 and resistance R4 are equal with adjustable resistance R1 and the initial proportion of adjustable resistance R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610146546.7A CN105652941B (en) | 2016-03-15 | 2016-03-15 | It is a kind of to reduce the device of pressure drop by adjusting dividing ratios |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610146546.7A CN105652941B (en) | 2016-03-15 | 2016-03-15 | It is a kind of to reduce the device of pressure drop by adjusting dividing ratios |
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| Publication Number | Publication Date |
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| CN105652941A CN105652941A (en) | 2016-06-08 |
| CN105652941B true CN105652941B (en) | 2018-11-09 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652942A (en) * | 2016-03-15 | 2016-06-08 | 西安紫光国芯半导体有限公司 | Voltage drop reduction device |
| CN114460994A (en) * | 2020-11-09 | 2022-05-10 | 扬智科技股份有限公司 | Voltage regulator |
| CN113376538A (en) * | 2021-05-18 | 2021-09-10 | 杭州迪为科技有限公司 | Battery pack Y-capacitor testing method and system |
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| CN1740936A (en) * | 2004-08-26 | 2006-03-01 | 瑞昱半导体股份有限公司 | Adaptive power management apparatus and method |
| CN102033561A (en) * | 2010-11-11 | 2011-04-27 | 华为技术有限公司 | Power supply circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008197892A (en) * | 2007-02-13 | 2008-08-28 | Sharp Corp | Series regulator |
| CN101068095A (en) * | 2007-05-30 | 2007-11-07 | 吴壬华 | Switch power supply output voltage regulating method and realizing circuit |
| CN101847028B (en) * | 2010-04-14 | 2012-03-28 | 广州市广晟微电子有限公司 | Dynamic compensation circuit with ultra-low power consumption and linear regulator with the same |
| US8536934B1 (en) * | 2012-02-23 | 2013-09-17 | Texas Instruments Incorporated | Linear voltage regulator generating sub-reference output voltages |
| US9874887B2 (en) * | 2012-02-24 | 2018-01-23 | Silicon Laboratories Inc. | Voltage regulator with adjustable feedback |
| TWI499885B (en) * | 2012-11-23 | 2015-09-11 | Realtek Semiconductor Corp | Constant current generating circuit and associated constant current generating method |
| CN103092246B (en) * | 2013-01-11 | 2015-06-10 | 中国科学院微电子研究所 | System and method for power supply monitoring |
| JP6211887B2 (en) * | 2013-10-15 | 2017-10-11 | エスアイアイ・セミコンダクタ株式会社 | Voltage regulator |
| CN205450859U (en) * | 2016-03-15 | 2016-08-10 | 西安紫光国芯半导体有限公司 | Through adjusting device that partial pressure proportion reduces pressure drop |
| CN105652942A (en) * | 2016-03-15 | 2016-06-08 | 西安紫光国芯半导体有限公司 | Voltage drop reduction device |
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- 2016-03-15 CN CN201610146546.7A patent/CN105652941B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740936A (en) * | 2004-08-26 | 2006-03-01 | 瑞昱半导体股份有限公司 | Adaptive power management apparatus and method |
| CN102033561A (en) * | 2010-11-11 | 2011-04-27 | 华为技术有限公司 | Power supply circuit |
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