CN105116950B - A kind of Digital DC Voltage-stabilized Power Source of high efficiency low ripple - Google Patents
A kind of Digital DC Voltage-stabilized Power Source of high efficiency low ripple Download PDFInfo
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- CN105116950B CN105116950B CN201510631105.1A CN201510631105A CN105116950B CN 105116950 B CN105116950 B CN 105116950B CN 201510631105 A CN201510631105 A CN 201510631105A CN 105116950 B CN105116950 B CN 105116950B
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Abstract
The invention provides a kind of Digital DC Voltage-stabilized Power Source of high efficiency low ripple, this power supply includes switch voltage-stabilizing unit, linear voltage stabilization unit and microcontroller, this power supply is by the way of two-stage voltage stabilizing, the first order adopts switching power supply, the second level adopts linear stabilized power supply, exported by the voltage stabilizing of the first order and powered to the second level, the voltage stabilizing of the second level is output as the voltage stabilizing output of whole power supply.The voltage stabilizing value of two-stage regulated power supply is all by microprocessor controls, as long as the voltage stabilizing output of the control first order exports big 1V or so than the voltage stabilizing needed for the second level, so that it may so that second level normal work, and voltage stabilizing efficiency high, ripple are little.Therefore this D.C. regulated power supply is integrated with the respective advantage of switching power supply and linear stabilized power supply, with efficiency high, ripple is little the characteristics of.
Description
Technical field
The present invention relates to a kind of D.C. regulated power supply, the little Digital DC Voltage-stabilized Power Source of particularly a kind of efficiency high, ripple,
Belong to electronic technology field.
Background technology
D.C. regulated power supply is the important component part of electronic circuit, and efficiency and ripple are two important indicators.Direct current
Regulated power supply is divided into switching power supply and linear stabilized power supply, and both respectively have pluses and minuses.Switching power supply efficiency high, but stricture of vagina
Bob is larger, and ripple is usually more than 100mV；Linear stabilized power supply ripple is little, but efficiency is low, and particularly output voltage is far below defeated
When entering voltage, efficiency is just lower.For this purpose, it is desirable that a kind of D.C. regulated power supply of design, energy integrated switch regulated power supply and line
The respective advantage of property regulated power supply, the requirement little to reach efficiency high, ripple.
The content of the invention
It is an object of the invention to provide a kind of Digital DC Voltage-stabilized Power Source, its spy for having efficiency high and ripple little simultaneously
Point.
The concrete technical scheme taken by the present invention is as follows：
A kind of Digital DC Voltage-stabilized Power Source of high efficiency low ripple, is characterized in that：This power supply includes switch voltage-stabilizing unit, line
Property voltage regulation unit and microcontroller, wherein the switch voltage-stabilizing unit is built using DC/DC transducers, DC/DC transducers it is defeated
Enter end as the input Vi of this power supply, the outfan of DC/DC transducers is sequentially connected in series resistance R1 and digital regulation resistance R2 is followed by
Ground, the connecting line between resistance R1 and digital regulation resistance R2 are also associated with an output voltage and adjust line access DC/DC transducers
Adjustable side, resistance R1 and digital regulation resistance R2 compositions adjust circuit, can by adjust the resistance of digital regulation resistance R2 come
Adjust the output end voltage of DC/DC transducers；The linear voltage stabilization unit includes digital to analog converter, voltage comparator and adjustment
Pipe, the outfan of digital to analog converter connect the positive input terminal of voltage comparator, the outfan connection adjustment pipe of voltage comparator
Adjustable side, the input for adjusting pipe connect the outfan of DC/DC transducers, adjust the outfan of the outfan as this power supply of pipe
Vo, the outfan for adjusting pipe are additionally provided with the negative input end that a feedback branch is connected to voltage comparator；The microcontroller is provided with
Two outfans connect digital regulation resistance R2 and digital to analog converter respectively, microcontroller by control the resistance of digital regulation resistance R2 come
The output voltage of switch voltage-stabilizing unit is adjusted, and by controlling the output voltage of digital to analog converter come linear adjustment voltage regulation unit
Output.
The DC/DC transducers adopt XL4005 chips, digital to analog converter to adopt MAX517 chips, voltage comparator to adopt
LM358 chips, digital regulation resistance R2 adopt MAX5413 chips.
By the way of two-stage voltage stabilizing, the first order adopts switching power supply to the present invention, and the second level is using linear voltage stabilization electricity
Source, is exported by the voltage stabilizing of the first order and is powered to the second level, and the voltage stabilizing of the second level is output as the voltage stabilizing output of whole power supply.Two-stage is steady
The voltage stabilizing value of voltage source is all by microprocessor controls, as long as the voltage stabilizing output of the control first order is exported than the voltage stabilizing needed for the second level
Big 1V or so, so that it may so that second level normal work, and voltage stabilizing efficiency high, ripple are little.Therefore this D.C. regulated power supply is integrated
The respective advantage of switching power supply and linear stabilized power supply, with efficiency high, ripple is little the characteristics of.
Description of the drawings
Fig. 1 is the circuit block diagram of the present invention.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, this Digital DC Voltage-stabilized Power Source includes switch voltage-stabilizing unit, linear voltage stabilization unit and microcontroller,
Wherein described switch voltage-stabilizing unit is built using DC/DC transducers, the input of the input of DC/DC transducers as this power supply
The outfan of Vi, DC/DC transducer is grounded after being sequentially connected in series resistance R1 and digital regulation resistance R2, resistance R1 and digital regulation resistance R2
Between connecting line be also associated with output voltage and adjust the adjustable side that line accesses DC/DC transducers, resistance R1 and numeral electricity
Position device R2 compositions adjust circuit, can adjust the outfan of DC/DC transducers by the resistance of regulation digital regulation resistance R2
Voltage；The linear voltage stabilization unit includes digital to analog converter, voltage comparator and adjustment pipe, the outfan connection of digital to analog converter
The positive input terminal of voltage comparator, the adjustable side of the outfan connection adjustment pipe of voltage comparator, adjusts the input connection of pipe
The outfan of DC/DC transducers, adjusts the output end vo of the outfan as this power supply of pipe, and the outfan for adjusting pipe is additionally provided with one
Feedback branch is connected to the negative input end of voltage comparator；The microcontroller is provided with two outfans and connects digital regulation resistance respectively
R2 and digital to analog converter, microcontroller adjust the output electricity of switch voltage-stabilizing unit by the resistance of control digital regulation resistance R2
Pressure, and by controlling the output voltage of digital to analog converter come the output of linear adjustment voltage regulation unit.
This Digital DC Voltage-stabilized Power Source is when in use, it is assumed that access+9V power supplys in input Vi, it is desirable to which output end vo is exported
+ 5V power supplys, can be adjusted to the resistance of digital regulation resistance R2 by microcontroller, make the outfan electricity of DC/DC transducers
Press as+6V, as using DC/DC transducers, its conversion efficiency is very high.Now managed for adjustment by the outfan of DC/DC transducers
Supplying power for input end, then by microprocessor controls digital to analog converter, make the positive input terminal that digital to analog converter is voltage comparator
A reference voltage is provided, the feedback voltage of the negative input termination adjustment pipe outfan of voltage comparator, adjustment pipe are capable of achieving
Accurate output+5V power supplys, due to adopting adjustment pipe controlled output, output voltage ripple very little.
Claims (2)
1. a kind of Digital DC Voltage-stabilized Power Source of high efficiency low ripple, is characterized in that：This power supply includes switch voltage-stabilizing unit, linear
Voltage regulation unit and microcontroller, wherein the switch voltage-stabilizing unit is built using DC/DC transducers, the input of DC/DC transducers
The input Vi as this power supply, the outfan of DC/DC transducers is held to be grounded after being sequentially connected in series resistance R1 and digital regulation resistance R2,
Connecting line between resistance R1 and digital regulation resistance R2 is also associated with an output voltage and adjusts the tune that line accesses DC/DC transducers
Section end, resistance R1 and digital regulation resistance R2 compositions adjust circuit, can be adjusted by the resistance of regulation digital regulation resistance R2
The output end voltage of DC/DC transducers；The linear voltage stabilization unit includes digital to analog converter, voltage comparator and adjustment pipe, number
The outfan of weighted-voltage D/A converter connects the positive input terminal of voltage comparator, the regulation of the outfan connection adjustment pipe of voltage comparator
End, the input for adjusting pipe connect the outfan of DC/DC transducers, adjust the output end vo of the outfan as this power supply of pipe,
The outfan of adjustment pipe is additionally provided with the negative input end that a feedback branch is connected to voltage comparator；It is defeated that the microcontroller is provided with two
Go out end and connect digital regulation resistance R2 and digital to analog converter respectively, microcontroller is adjusted by the resistance of control digital regulation resistance R2
The output voltage of switch voltage-stabilizing unit, and by controlling the output voltage of digital to analog converter come the defeated of linear adjustment voltage regulation unit
Go out.
2. Digital DC Voltage-stabilized Power Source according to claim 1, is characterized in that：The DC/DC transducers adopt XL4005
Chip, digital to analog converter adopt MAX517 chips, voltage comparator to adopt LM358 chips, digital regulation resistance R2 to adopt MAX5413
Chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510631105.1A CN105116950B (en) | 2015-09-29 | 2015-09-29 | A kind of Digital DC Voltage-stabilized Power Source of high efficiency low ripple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510631105.1A CN105116950B (en) | 2015-09-29 | 2015-09-29 | A kind of Digital DC Voltage-stabilized Power Source of high efficiency low ripple |
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| Publication Number | Publication Date |
|---|---|
| CN105116950A CN105116950A (en) | 2015-12-02 |
| CN105116950B true CN105116950B (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510631105.1A Expired - Fee Related CN105116950B (en) | 2015-09-29 | 2015-09-29 | A kind of Digital DC Voltage-stabilized Power Source of high efficiency low ripple |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106094966B (en) * | 2016-08-25 | 2019-08-16 | 安徽赛腾微电子有限公司 | A kind of linear voltage regulator of wideband high PSRR |
| CN106325350A (en) * | 2016-09-29 | 2017-01-11 | 中国电子科技集团公司第四十三研究所 | DC/DC converter output voltage control circuit |
| CN106787846A (en) * | 2016-12-15 | 2017-05-31 | 合肥捷曼信息科技有限公司 | A kind of Intellight voltage-stabilizing power supply |
Citations (5)
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| CN103532394A (en) * | 2013-10-24 | 2014-01-22 | 华东光电集成器件研究所 | Continuously adjustable intelligent power module |
| CN203465624U (en) * | 2013-08-14 | 2014-03-05 | 浙江水利水电学院 | Bootstrap numerical control DC (Direct Current) stabilized voltage supply |
| CN204145296U (en) * | 2014-09-14 | 2015-02-04 | 重庆电讯职业学院 | A kind of DC numerical control power supply |
| CN204244074U (en) * | 2014-09-22 | 2015-04-01 | 上海翱翼汽车电子有限公司 | Dc-dc |
| CN204965239U (en) * | 2015-09-29 | 2016-01-13 | 广西职业技术学院 | Numerical control D.C. regulated power supply of low ripple of high efficiency |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9287772B2 (en) * | 2013-03-06 | 2016-03-15 | Vidatronic, Inc. | Voltage regulators with improved startup, shutdown, and transient behavior |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203465624U (en) * | 2013-08-14 | 2014-03-05 | 浙江水利水电学院 | Bootstrap numerical control DC (Direct Current) stabilized voltage supply |
| CN103532394A (en) * | 2013-10-24 | 2014-01-22 | 华东光电集成器件研究所 | Continuously adjustable intelligent power module |
| CN204145296U (en) * | 2014-09-14 | 2015-02-04 | 重庆电讯职业学院 | A kind of DC numerical control power supply |
| CN204244074U (en) * | 2014-09-22 | 2015-04-01 | 上海翱翼汽车电子有限公司 | Dc-dc |
| CN204965239U (en) * | 2015-09-29 | 2016-01-13 | 广西职业技术学院 | Numerical control D.C. regulated power supply of low ripple of high efficiency |
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| CN105116950A (en) | 2015-12-02 |
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| CB03 | Change of inventor or designer information |
Inventor after: Li Xiansheng Inventor after: Deng Yun Inventor after: Lu Shanyong Inventor after: Zhang Yuling Inventor after: Zhou Mang Inventor after: Wei Zhongshan Inventor before: Li Xiansheng Inventor before: Zhang Yuling Inventor before: Zhou Mang Inventor before: Wei Zhongshan |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170329 Termination date: 20210929 |