CN108390561A - A kind of DC/DC DCPS digitally controlled power sources design - Google Patents
A kind of DC/DC DCPS digitally controlled power sources design Download PDFInfo
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- CN108390561A CN108390561A CN201810183306.3A CN201810183306A CN108390561A CN 108390561 A CN108390561 A CN 108390561A CN 201810183306 A CN201810183306 A CN 201810183306A CN 108390561 A CN108390561 A CN 108390561A
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- Prior art keywords
- voltage
- digitally controlled
- controlled power
- circuit
- power sources
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/157—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of designs of DC/DC DCPS digitally controlled power sources, including DC/DC voltage-stablizers and voltage feedback circuit and current feedback circuit, DC/DC output end of voltage stabilizer, it connects R1 and R2 and constitutes output voltage sampling circuit, voltage feedback circuit and current feedback circuit, by the current signal of output is converted into voltage signal, it is input to the feedback pin of DC/DC switching regulators, the transition energy of realization constant pressure source to constant-current source.DCPS digitally controlled power source of the present invention is designed, and circuit is simple, multiple functional, is easy to extend；DCPS digitally controlled power source precision is high, and error is small, easily controllable, and element materials are extensive, cheap.
Description
Technical field
The present invention relates to electronic apparatus field, specially a kind of DC/DC DCPS digitally controlled power sources design.
Background technology
DCPS digitally controlled power source is proposed for the insufficient of traditional analog power supply, and digitlization can reduce not true in production process
The link number determined factor and artificially participated in, efficiently solves reliability in power module, intelligence and homogeneity of product etc.
Engineering problem greatlys improve production efficiency and the maintainability of product.DCPS digitally controlled power source is divided into digital voltage power and numerical control electric current
Source.Digital voltage power, has that output voltage stabilization, precision are high and adjustable range is wide, response is fast, and stability is good, efficient etc. excellent
Point.Digital-control constant-flow source has that output accuracy is high and adjustable range is wide, efficient, adaptable, output is not with input voltage, load
The features such as changing and changing.How to design a digital voltage power and Numerical Controlled Current Source coexists, output accuracy height and adjustable range
Wide system is one of application of electronic technology hot spot.
Invention content
It is an object of the present invention to provide a kind of reasonable designs, and circuit is simple, and the extensive DC/DC DCPS digitally controlled power sources of element materials are set
Meter.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of DC/DC DCPS digitally controlled power sources design, including DC/DC voltage-stablizers and voltage feedback circuit and current feedback circuit,
DC/DC output end of voltage stabilizer connects R1 and R2 and constitutes output voltage sampling circuit, voltage feedback circuit and current feedback circuit,
By the current signal of output is converted into voltage signal, it is input to the feedback pin of DC/DC switching regulators, realizes constant pressure source
To the transformation of constant-current source.
Preferably, the R S are sampling resistor, and the voltage signal on R S is passed through and is put by what R 3, R f, amplifier A were formed
Big device is input to the feedback pin of DC/DC switching regulators, and the size of output current is arranged by the way that R 3, R f sizes is arranged.
Preferably, the control circuit inside the DC/DC voltage-stablizers is according to feedback voltage V f (sampled voltage) and V ref
The size of difference carrys out the appropriate control parameter for adjusting power conversion circuit, makes output voltage stabilization in a fixed value, reaches
The mesh of voltage stabilizing.
Preferably, described S1, S2, S3 are relay.
Preferably, described R1, Rf are digital regulation resistance, are adjusted.
The beneficial effects of the invention are as follows：
DCPS digitally controlled power source of the present invention is designed, and circuit is simple, multiple functional, is easy to extend；DCPS digitally controlled power source precision is high, error
Small, easily controllable, element materials are extensive, cheap.
Description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is circuit diagram of the present invention.
Specific implementation mode
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claims
It is applied with the multitude of different ways of covering.
As shown in Figure 1, the invention discloses a kind of design of DC/DC DCPS digitally controlled power sources, DC/DC switching regulators are widely used in
In various electronic equipments, it is used as constant pressure source, when load current changes in rated range, output voltage remains unchanged.Fig. 1
In include voltage feedback circuit and current feedback circuit.When user selects constant pressure output, system voltage feedback circuit works,
R 1, R 2 constitute output voltage sampling circuit, the size for output voltage to be arranged in Fig. 1.When output voltage V out are because of load
When changing and changing, feedback voltage V f is also with variation, and the control circuit inside DC/DC voltage-stablizers is according to feedback voltage V f
The size of (sampled voltage) and V ref differences carrys out the appropriate control parameter (duty ratio of such as PWM) for adjusting power conversion circuit,
Make output voltage stabilization in a fixed value, achievees the purpose that voltage stabilizing.When user selects constant current output, system power feedback
Circuit works, and the different responses of constant-current source and constant pressure source on circuit are different in the object that the sample circuit of the two acquires.
Constant pressure source needs in real time to make output voltage tracking, control in the case where loading variation to keep the constant of output voltage
Output voltage does not change with the variation of load, and constant-current source refers in the case where loading variation, and voltage-stablizer can be according to load
Variation accordingly adjust output voltage, keep output current constant, the acquisition of constant-current source sample circuit be output current signal,
The current signal of output is converted into voltage signal, the feedback pin of DC/DC switching regulators is input to, can be achieved with constant pressure source
To the transformation of constant-current source.R S in Fig. 1 are sampling resistor, and the voltage signal on R S is passed through and is made of R 3, R f, amplifier A
Amplifier, be input to the feedback pin of DC/DC switching regulators, by the way that R 3 is arranged, output current is arranged in R f sizes
Size.In general, the gain of operational amplifier can be accomplished very big, and the sampling electricity of very little can be used in such circuit
Resistance, to reach reduction loss, carry efficient mesh.
The embodiments of the present invention described above are not intended to limit the scope of the present invention.It is any in the present invention
Spirit and principle within made by modifications, equivalent substitutions and improvements etc., should be included in the claim protection model of the present invention
Within enclosing.
Claims (5)
1. a kind of DC/DC DCPS digitally controlled power sources design, which is characterized in that including DC/DC voltage-stablizers and voltage feedback circuit and electric current
Feedback circuit, DC/DC output end of voltage stabilizer connect R1 and R2 and constitute output voltage sampling circuit, voltage feedback circuit and electric current
Feedback circuit is input to the feedback pin of DC/DC switching regulators by the current signal of output is converted into voltage signal,
Realize transformation of the constant pressure source to constant-current source.
2. DC/DC DCPS digitally controlled power sources design according to claim 1, which is characterized in that the RS is sampling resistor, will be on RS
Voltage signal pass through the amplifier that is made of R3, Rf, amplifier A, be input to the feedback pin of DC/DC switching regulators, pass through
R3, Rf size are set the size of output current is arranged.
3. DC/DC DCPS digitally controlled power sources design according to claim 1, which is characterized in that the control inside the DC/DC voltage-stablizers
Circuit processed is joined according to the size of feedback voltage V f (sampled voltage) and Vref differences come the appropriate control for adjusting power conversion circuit
Number, makes output voltage stabilization in a fixed value, reaches the mesh of voltage stabilizing.
4. DC/DC DCPS digitally controlled power sources design according to claim 1, which is characterized in that described S1, S2, S3 are relay.
5. DC/DC DCPS digitally controlled power sources design according to claim 1, which is characterized in that described R1, Rf are digital regulation resistance,
It is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810183306.3A CN108390561A (en) | 2018-03-06 | 2018-03-06 | A kind of DC/DC DCPS digitally controlled power sources design |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810183306.3A CN108390561A (en) | 2018-03-06 | 2018-03-06 | A kind of DC/DC DCPS digitally controlled power sources design |
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| CN108390561A true CN108390561A (en) | 2018-08-10 |
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| CN201810183306.3A Pending CN108390561A (en) | 2018-03-06 | 2018-03-06 | A kind of DC/DC DCPS digitally controlled power sources design |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109189144A (en) * | 2018-10-12 | 2019-01-11 | 珠海格力智能装备有限公司 | Method, device and system for controlling power supply voltage |
| CN109640448A (en) * | 2018-12-25 | 2019-04-16 | 中山市卓越制品有限公司 | A kind of constant current feedback control circuit |
| CN110212761A (en) * | 2019-06-21 | 2019-09-06 | 西北工业大学 | A kind of a variety of output mode conversion control circuits of Switching Power Supply |
| CN111416443A (en) * | 2019-01-07 | 2020-07-14 | 哈尔滨工业大学（威海） | Device capable of realizing wireless power transmission voltage stabilization output |
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| CN106466507A (en) * | 2016-10-13 | 2017-03-01 | 上海健康医学院 | A kind of isolated programmed electrical stimulation device |
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| WO1995034121A1 (en) * | 1994-06-03 | 1995-12-14 | Philips Electronics N.V. | Power supply with improved efficiency, transmitter comprising such a power supply |
| US20140292300A1 (en) * | 2013-03-29 | 2014-10-02 | Virginia Tech Intellectual Properties, Inc. | V+hu 2 +l Power Converter Control with Capacitor Current Ramp Compensation |
| CN103715894A (en) * | 2014-01-07 | 2014-04-09 | 山东大学 | Multi-channel adjustable large current constant current intelligent sensing control power supply unit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109189144A (en) * | 2018-10-12 | 2019-01-11 | 珠海格力智能装备有限公司 | Method, device and system for controlling power supply voltage |
| CN109640448A (en) * | 2018-12-25 | 2019-04-16 | 中山市卓越制品有限公司 | A kind of constant current feedback control circuit |
| CN109640448B (en) * | 2018-12-25 | 2024-02-13 | 中山市卓越制品有限公司 | Constant current feedback control circuit |
| CN111416443A (en) * | 2019-01-07 | 2020-07-14 | 哈尔滨工业大学（威海） | Device capable of realizing wireless power transmission voltage stabilization output |
| CN110212761A (en) * | 2019-06-21 | 2019-09-06 | 西北工业大学 | A kind of a variety of output mode conversion control circuits of Switching Power Supply |
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Application publication date: 20180810 |
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