CN206060534U - DC boosting chopper circuit with proportion adjustment function - Google Patents
DC boosting chopper circuit with proportion adjustment function Download PDFInfo
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- CN206060534U CN206060534U CN201621115608.XU CN201621115608U CN206060534U CN 206060534 U CN206060534 U CN 206060534U CN 201621115608 U CN201621115608 U CN 201621115608U CN 206060534 U CN206060534 U CN 206060534U
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- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
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- 238000006243 chemical reaction Methods 0.000 description 3
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- 230000006698 induction Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
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Abstract
DC boosting chopper circuit with proportion adjustment function, belongs to field of electrical control, and this utility model is that the boost chopper for solving output input fixed ratio limits its range of application, inflexible problem as ratio is non-adjustable.This utility model include inductance L1, diode VD2, electric capacity C1, C2, transistor V1, amplifier A1, A2, comparator A3, with reference to DC source UREF, resistance R1～R9 and triangular-wave generator；R3, R4, R5, C2, A1 constitute " wave filter " to being input into u1It is filtered, filters noise signal, obtains voltage signal u2The R6 ends of difference scaling circuit are acted on, the reference voltage U with R7 endsREFRelatively amplification draws adjustment amount uA2.Voltage comparator A3 adjusts u according to the adjustment amountA3Dutycycle, adjust result make output voltage uoStablize in expected value.
Description
Technical field
This utility model belongs to field of electrical control.
Background technology
With developing rapidly for Power Electronic Technique, high-voltage switch gear regulated power supply is widely used in computer, communication, industry
The field such as processing and Aero-Space.All of power equipment is required for good stable power supply, and the outside energy for providing is most
To exchange, power-supply device is responsible for various classification direct current tasks alternating current power supply is converted to needed for electronic equipment.But institute sometimes
For DC voltage do not meet equipment needs, still need to conversion, referred to as DC/DC conversion.DC chopper circuit becomes as unidirectional current
The DC-DC converter of another kind of fixed voltage, in DC drive system., charging storage circuit, Switching Power Supply, power electronics become
Common application is obtained in changing device and various electrical equipments.Occur in that therewith such as buck circuit, boost chopper,
The translation circuit of the various ways such as stepping-up/stepping-down chopper circuit, compound chopper circuit.Chopped wave technique has been widely used switch
In power supply and DC motor drive so as to which control is obtained and accelerates the steady, effect of quick response, saves energy.Full-control type electricity
Power electronic device IGBT is widely used in the transmission of traction fax electrokinetic energy and conversion, active power filtering energy field.
Wherein boost chopper is that, using extremely extensive one kind, its typical schematic diagram is as shown in figure 1, when V1 is turned on
When, inductance L is accessed power supply equivalent to directly, and as inductive current can not be mutated, the electric current for then flowing through inductance L gradually increases
(now self inductance prevents the increase of magnetic flux, and self induction electromotive force direction is with electric current conversely, preventing increasing sharply for electric current), will
Energy storage is in magnetic field；When V1 is turned off, as inductive current can not be mutated, inductance L produces self induction electromotive force to prevent magnetic
The decline of flux, be may determine that out by electric current, and the self induction electromotive force of inductance L is left just to bear the right side, just with power supply in the same direction, voltage phase
Superposition, output voltage uoThan input voltage uiHeight, generates boost effect.The most output of existing DC boosting chopper circuit
The ratio of voltage and input voltage is to fix nonadjustable, therefore, its range of application, underaction are limited when in use.
The content of the invention
This utility model purpose is to solve the boost chopper for exporting input fixed ratio as ratio is non-adjustable
And limit its range of application, inflexible problem, there is provided a kind of DC boosting chopper circuit with proportion adjustment function.
DC boosting chopper circuit with proportion adjustment function described in the utility model include inductance L1, diode VD2,
Electrochemical capacitor C1, electric capacity C2, transistor V1, amplifier A1, amplifier A2, comparator A3, with reference to DC source UREF, resistance R1, resistance
R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9 and triangular-wave generator；
One end of inductance L1 connects the positive pole of input DC power, and the other end of inductance L1 connects the leakage of transistor V1 simultaneously
Pole and the anode of diode VD2, the negative electrode of diode VD2 connect the positive pole of electrochemical capacitor C1, one end of resistance R1 simultaneously and cut
Wave circuit cathode output end；
The grid of transistor V1 connects the outfan of comparator A3, and the inverting input connection triangular wave of comparator A3 occurs
The triangular signal outfan of device, the in-phase input end of comparator A3 connect the outfan of amplifier A2, the homophase input of amplifier A2
End connects one end of resistance R9 and one end of resistance R7 simultaneously, and the other end connection of resistance R7 is with reference to DC source UREFPositive pole,
The inverting input of amplifier A2 connects one end of resistance R6, and the other end of resistance R6 connects the outfan of amplifier A1, amplifier A1
Inverting input connects one end of resistance R4, and the in-phase input end of amplifier A1 connects one end of electric capacity C2 and the one of resistance R3 simultaneously
End, the other end of resistance R3 connect one end of the other end and resistance R2 of resistance R1 simultaneously；
The other end of resistance R2 connect simultaneously the negative pole of input DC power, the source electrode of transistor V1, resistance R9 it is another
End, with reference to DC source UREFNegative pole, the other end of electric capacity C2, the other end of resistance R4, the negative pole of electrochemical capacitor C1 and copped wave
Circuit cathode output end；
Resistance R8 is connected in parallel between the inverting input of amplifier A2 and outfan；
Resistance R5 is connected in parallel between the inverting input of amplifier A1 and outfan.
Preferably, transistor V1 is provided with parasitic diode VD1, and parasitic diode VD1 is connected in reverse parallel in transistor V1's
Between source electrode, drain electrode.
Preferably, the resistance of resistance R6 and resistance R7 is equal.
Preferably, the resistance of resistance R8 and resistance R9 is equal.
Advantage of the present utility model：DC boosting chopper circuit with proportion adjustment function described in the utility model has
Proportion adjustment link, the ratio between flexible adjustment output voltage and input voltage, flexibly applies in various environment, should
It is wide with scope, and circuit structure is simple, practical.
Description of the drawings
Fig. 1 is the schematic diagram of the existing DC boosting chopper circuit with proportion adjustment function；
Fig. 2 is the schematic diagram of the DC boosting chopper circuit with proportion adjustment function described in the utility model.
Specific embodiment
Illustrate present embodiment with reference to Fig. 2, the agent structure of present embodiment DC boosting chopper circuit include L1,
V1, VD1, VD2, C1, these parts are identical with existing boost chopper, and present embodiment circuit increased proportion adjustment work(
Can, make output voltage uoWith input voltage uiRatio it is adjustable, to ensure to export stable output voltage uo, present embodiment sets
The proportion adjustment circuit of band filter is counted, R1, R2 constitute bleeder circuit, wherein sampling to the voltage at R2 two ends, obtain
Sampling resistor R2 both end voltage values u1=kuo, wherein k ∈ (0,1).
R3, R4, R5, C2, A1 constitute " wave filter " to being input into u1It is filtered, can effectively filters noise signal, obtain
Voltage signal u2, the transmission function of the wave filter is
Voltage signal u2Act on difference scaling circuit R6, R7, R8, R9, A2 (R6=R7=R, R8=R9=Rf)
R6 ends, the reference voltage U with R7 endsREFRelatively amplify (" difference scaling circuit " can be considered " proportional controller "), draw tune
Whole amount
Voltage comparator A3 adjusts u according to the adjustment amountA3Dutycycle, adjust result make output voltage uoIt is stable to expect
Value.
Claims (4)
1. there is the DC boosting chopper circuit of proportion adjustment function, it is characterised in that including inductance L1, diode VD2, electrolysis
Electric capacity C1, electric capacity C2, transistor V1, amplifier A1, amplifier A2, comparator A3, with reference to DC source UREF, resistance R1, resistance R2,
Resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9 and triangular-wave generator；
One end of inductance L1 connects the positive pole of input DC power, the other end of inductance L1 connect simultaneously the drain electrode of transistor V1 and
The anode of diode VD2, the negative electrode of diode VD2 connect the positive pole of electrochemical capacitor C1, one end of resistance R1 and copped wave electricity simultaneously
Road cathode output end；
The grid of transistor V1 connects the outfan of comparator A3, the inverting input connection triangular-wave generator of comparator A3
Triangular signal outfan, the in-phase input end of comparator A3 connect the outfan of amplifier A2, and the in-phase input end of amplifier A2 is same
When connect one end of resistance R9 and one end of resistance R7, the other end connection of resistance R7 is with reference to DC source UREFPositive pole, amplifier
The inverting input of A2 connects one end of resistance R6, and the other end of resistance R6 connects the outfan of amplifier A1, amplifier A1 it is anti-phase
Input connects one end of resistance R4, and the in-phase input end of amplifier A1 connects one end of electric capacity C2 and one end of resistance R3 simultaneously,
The other end of resistance R3 connects one end of the other end and resistance R2 of resistance R1 simultaneously；
The other end of resistance R2 is while connect the negative pole of input DC power, the source electrode of transistor V1, the other end of resistance R9, ginseng
Examine DC source UREFNegative pole, the other end of electric capacity C2, the other end of resistance R4, the negative pole of electrochemical capacitor C1 and chopper circuit
Cathode output end；
Resistance R8 is connected in parallel between the inverting input of amplifier A2 and outfan；
Resistance R5 is connected in parallel between the inverting input of amplifier A1 and outfan.
2. there is the DC boosting chopper circuit of proportion adjustment function according to claim 1, it is characterised in that transistor V1
Parasitic diode VD1 is provided with, parasitic diode VD1 is connected in reverse parallel between the source electrode of transistor V1, drain electrode.
3. according to claim 1 with proportion adjustment function DC boosting chopper circuit, it is characterised in that resistance R6 and
The resistance of resistance R7 is equal.
4. according to claim 1 with proportion adjustment function DC boosting chopper circuit, it is characterised in that resistance R8 and
The resistance of resistance R9 is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621115608.XU CN206060534U (en) | 2016-10-11 | 2016-10-11 | DC boosting chopper circuit with proportion adjustment function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621115608.XU CN206060534U (en) | 2016-10-11 | 2016-10-11 | DC boosting chopper circuit with proportion adjustment function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206060534U true CN206060534U (en) | 2017-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621115608.XU Expired - Fee Related CN206060534U (en) | 2016-10-11 | 2016-10-11 | DC boosting chopper circuit with proportion adjustment function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206060534U (en) |
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2016
- 2016-10-11 CN CN201621115608.XU patent/CN206060534U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170329 |