CN106100389A - A kind of AC DC change-over circuit based on digital control circuit - Google Patents
A kind of AC DC change-over circuit based on digital control circuit Download PDFInfo
- Publication number
- CN106100389A CN106100389A CN201610731469.1A CN201610731469A CN106100389A CN 106100389 A CN106100389 A CN 106100389A CN 201610731469 A CN201610731469 A CN 201610731469A CN 106100389 A CN106100389 A CN 106100389A
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- China
- Prior art keywords
- resistance
- change
- linear rectifier
- npn audion
- control unit
- 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.)
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Classifications
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal 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
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal 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
-
- 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)
- Rectifiers (AREA)
Abstract
The invention discloses a kind of AC DC change-over circuit based on digital control circuit, the linear rectifier being connected with power input VIN including power input VIN, described linear rectifier is provided with output port A and input port B, output port A is connected to power output end VOUT, power output end VOUT connects resistance R1, resistance R1 is connected with linear rectifier by input port B, and resistance R1 has numerical control unit with being connected on the connecting line of linear rectifier input port B；Described numerical control unit includes the NPN audion Q2 that one end of resistance R3 and resistance R3 is connected, NPN audion is connected to drive power supply CTLB1, connecting line between the other end of resistance R3 with resistance R1 and linear rectifier is connected, the base stage of described NPN audion Q2 is connected with driving power supply CTLB1, the colelctor electrode of NPN audion Q2 is connected with resistance R3, the grounded emitter of NPN audion Q2.
Description
Technical field
The present invention relates to line rectification change-over circuit, be specifically related to a kind of AC-DC based on digital control circuit conversion electricity
Road.
Background technology
General simple AC/DC change-over circuit, is all to use rectifier circuit, then by big electrochemical capacitor copped wave
And capacitor filtering, the most achievable exchange is converted to direct current powering load.Make to carry out in aforementioned manners AC/DC conversion
Time, it is desirable to using bigger electrochemical capacitor, relatively costly, the power factor of the most whole circuit is relatively low.
Low noise voltage generally realizes voltage by linear rectification circuit and changes, and its principle is as follows: output voltage is by dividing
Piezoresistance feeds back to controller, it is achieved the control of output voltage values.After divider resistance determines, output voltage just secures, no
Output voltage can be adjusted in real time.
Summary of the invention
Present invention aim at providing a kind of AC-DC change-over circuit based on digital control circuit, solve line rectification and turn
The problem that can not adjust output voltage in real time when changing the conversion of circuit realiration voltage.
The present invention is achieved through the following technical solutions:
A kind of AC-DC change-over circuit based on digital control circuit, is connected with power input VIN including power input VIN
Linear rectifier, described linear rectifier is provided with output port A and input port B, output port A be connected to power supply output
End VOUT, power output end VOUT connect has resistance R1, resistance R1 to be connected with linear rectifier by input port B, resistance R1
It is connected with on the connecting line of linear rectifier input port B and has numerical control unit；
Described numerical control unit includes the NPN audion Q2 that one end of resistance R3 and resistance R3 is connected, and NPN audion is connected to drive
Galvanic electricity source CTLB1, the connecting line between the other end of resistance R3 with resistance R1 and linear rectifier is connected, described NPN audion
The base stage of Q2 is connected with driving power supply CTLB1, and the colelctor electrode of NPN audion Q2 is connected with resistance R3, the transmitting of NPN audion Q2
Pole ground connection.
Numerical control is: pass through Digital Circuit Control.
The present invention realizes adjusting in real time the principle of output voltage: power input VIN is to linear rectifier input AC
Electricity, linear rectifier converts alternating current to unidirectional current and is exported from output port A by unidirectional current, and unidirectional current is through resistance R1's
After dividing potential drop, a part of voltage exports from power output end VOUT, and another part voltage feeds back to linear rectifier through resistance R1
And with power input VIN input voltage carry out interacting and then change power output end VOUT's in linear rectifier
Output voltage, thus the DC voltage after power output end VOUT exports stable change, resistance R1 and linear rectifier
Connecting on connecting line and have numerical control unit, the driving power supply CTLB1 trigger triode Q2 of numerical control unit makes audion be in connected state
State, then make resistance R3 be in operating circuit, change the feedback voltage of linear rectifier, thus change power output end
Output voltage.
Described numerical control unit at least two.Numerical control unit is the most, and the scope that voltage changes is the biggest, accesses in numerical control unit
Resistance R3 resistance different, the magnitude of voltage that in numerical control unit, power output end is exported by the resistance of only resistance R3 has an impact, because of
This can select numerical control unit as required.
Described resistance R1 connects pull down resistor R2.Pull down resistor is given when circuit driver is closed together with upper connecting resistance
Circuit (node), with a fixing level, is generally used for protecting signal, prevents interference, increase the stability of circuit, just power on
When, port voltage is unstable, in order to make it stable, will use pull down resistor.
The base stage of audion Q2 has resistance R4 with driving to be connected between power supply CTLB1, and R4 can be different to adapt to current limliting
Control level.
Being connected between described resistance R4 and the base stage of audion Q2 and have resistance R5, the when that R5 ensureing not drive, Q2 is disconnected
Open state.
The present invention compared with prior art, has such advantages as and beneficial effect:
1, a kind of AC-DC change-over circuit based on digital control circuit of the present invention can adjust output voltage in real time, sets in the present invention
Being equipped with numerical control unit, numerical control unit can change the output voltage values of power output end；
2, the design of a kind of AC-DC converting circuit structure based on digital control circuit of the present invention is simple, and the circuit of the present invention connects
Simply, it is only necessary to connect numerical control unit and can change output voltage.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes of the application
Point, it is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is present configuration schematic diagram.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As it is shown in figure 1, a kind of AC-DC change-over circuit based on digital control circuit of the present invention, including power input VIN and
The linear rectifier that power input VIN connects, described linear rectifier is provided with output port A and input port B, outfan
Mouth A is connected to power output end VOUT, power output end VOUT connection has resistance R1, resistance R1 by input port B with linear
Commutator connects, and resistance R1 has numerical control unit with being connected on the connecting line of linear rectifier input port B；
Described numerical control unit includes the NPN audion Q2 that one end of resistance R3 and resistance R3 is connected, and NPN audion is connected to drive
Galvanic electricity source CTLB1, the connecting line between the other end of resistance R3 with resistance R1 and linear rectifier is connected, described NPN audion
The base stage of Q2 is connected with driving power supply CTLB1, and the colelctor electrode of NPN audion Q2 is connected with resistance R3, the transmitting of NPN audion Q2
Pole ground connection.
Power input VIN is to linear rectifier input AC electricity, and linear rectifier converts alternating current to unidirectional current also
Being exported from output port A by unidirectional current, unidirectional current is after the dividing potential drop of resistance R1, and a part of voltage is defeated from power output end VOUT
Go out, another part voltage through resistance R1 feed back to linear rectifier and with power input VIN input voltage the most whole
Stream device carries out interacting and then changing the output voltage of power output end VOUT, thus steady to power output end VOUT output
The fixed DC voltage after change, resistance R1 has numerical control unit with being connected on the connecting line of linear rectifier, driving of numerical control unit
Galvanic electricity source CTLB1 trigger triode Q2 makes audion be in connected state, then make resistance R3 be in operating circuit, change
The feedback voltage of linear rectifier, thus change the output voltage of power output end.
Embodiment 2
Based on embodiment 1, described numerical control unit at least two.Numerical control unit is the most, and the scope that voltage changes is the biggest, numerical control list
The resistance R3 resistance accessed in unit is different, and the magnitude of voltage that in numerical control unit, power output end is exported by the resistance of only resistance R3 has
Impact, therefore can select numerical control unit as required.
Embodiment 3
Based on above-described embodiment, described resistance R1 connects pull down resistor R2.Pull down resistor drives at circuit together with upper connecting resistance
To circuit (node) with a fixing level when dynamic device cuts out, it is generally used for protecting signal, prevents interference, increase the steady of circuit
Qualitative, the when of just powering on, port voltage is unstable, in order to make it stable, will use pull down resistor.
Embodiment 4
Based on above-described embodiment, the base stage of audion Q2 has resistance R4 with driving to be connected between power supply CTLB1, described resistance R4 and
Connect between the base stage of audion Q2 and have resistance R5.R4 can be with current limliting to adapt to different control levels, and R5 ensures not drive
When Q2 be off state.
Embodiment 5
Based on above-described embodiment, as it is shown in figure 1, power input VIN connects input filter capacitor C1, power output end VOUT
Connect and have output filter capacitor C2.Filter capacitor is contained in rectification circuit two ends and promotes efficiently in order to reduce AC ripple ripple coefficient
Smooth direct current exports.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, all should comprise
Within protection scope of the present invention.
Claims (5)
1. an AC-DC change-over circuit based on digital control circuit, is connected with power input including power input VIN
Linear rectifier, described linear rectifier is provided with output port A and input port B, output port A be connected to power supply output
End VOUT, power output end VOUT connect has resistance R1, resistance R1 to be connected with linear rectifier by input port B, its feature
Being, resistance R1 has numerical control unit with being connected on the connecting line of linear rectifier input port B；
Described numerical control unit includes the NPN audion Q2 that one end of resistance R3 and resistance R3 is connected, and NPN audion is connected to drive
Galvanic electricity source CTLB1, the connecting line between the other end of resistance R3 with resistance R1 and linear rectifier is connected, described NPN audion
The base stage of Q2 is connected with driving power supply CTLB1, and the colelctor electrode of NPN audion Q2 is connected with resistance R3, the transmitting of NPN audion Q2
Pole ground connection.
A kind of AC-DC change-over circuit based on digital control circuit the most according to claim 1, it is characterised in that described
Numerical control unit at least two.
A kind of AC-DC change-over circuit based on digital control circuit the most according to claim 1 and 2, it is characterised in that institute
State resistance R1 connection and have pull down resistor R2.
A kind of AC-DC change-over circuit based on digital control circuit the most according to claim 1 and 2, it is characterised in that three
The base stage of pole pipe Q2 has resistance R4 with driving to be connected between power supply CTLB1.
A kind of AC-DC change-over circuit based on digital control circuit the most according to claim 4, it is characterised in that described
It is connected between resistance R4 and the base stage of audion Q2 and has resistance R5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610731469.1A CN106100389A (en) | 2016-08-26 | 2016-08-26 | A kind of AC DC change-over circuit based on digital control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610731469.1A CN106100389A (en) | 2016-08-26 | 2016-08-26 | A kind of AC DC change-over circuit based on digital control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106100389A true CN106100389A (en) | 2016-11-09 |
Family
ID=57225306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610731469.1A Pending CN106100389A (en) | 2016-08-26 | 2016-08-26 | A kind of AC DC change-over circuit based on digital control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106100389A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030111983A1 (en) * | 2001-12-10 | 2003-06-19 | Miller Greg J. | Efficient buck topology DC-DC power stage utilizing monolithic N- channel upper FET and pilot current sensing |
| CN201985759U (en) * | 2011-02-28 | 2011-09-21 | 广州视源电子科技有限公司 | DCDC (direct current direct current) output circuit |
| CN205986660U (en) * | 2016-08-26 | 2017-02-22 | 成都众乐泰科技有限公司 | Numerical control linear rectification converting circuit |
-
2016
- 2016-08-26 CN CN201610731469.1A patent/CN106100389A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030111983A1 (en) * | 2001-12-10 | 2003-06-19 | Miller Greg J. | Efficient buck topology DC-DC power stage utilizing monolithic N- channel upper FET and pilot current sensing |
| CN201985759U (en) * | 2011-02-28 | 2011-09-21 | 广州视源电子科技有限公司 | DCDC (direct current direct current) output circuit |
| CN205986660U (en) * | 2016-08-26 | 2017-02-22 | 成都众乐泰科技有限公司 | Numerical control linear rectification converting circuit |
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Application publication date: 20161109 |