CN208754267U - A kind of automobile-used voltage regulator circuit - Google Patents
A kind of automobile-used voltage regulator circuit Download PDFInfo
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- CN208754267U CN208754267U CN201821584150.1U CN201821584150U CN208754267U CN 208754267 U CN208754267 U CN 208754267U CN 201821584150 U CN201821584150 U CN 201821584150U CN 208754267 U CN208754267 U CN 208754267U
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Abstract
The utility model discloses a kind of automobile-used voltage regulator circuits, comprising: gear voltage regulation unit, microprocessor, filter shape unit, and amplifying unit, its middle gear voltage regulation unit is for generating different gear voltage outputs to microprocessor, microprocessor carries out AD sampling to the gear voltage received, and the pwm signal that the gear voltage received is converted into corresponding duty ratio is exported to filter shape unit according to preset switching strategy, the pwm signal filter shape received is that corresponding d. c. voltage signal is exported to amplifying unit by filter shape unit, amplifying unit exports after amplifying processing to the d. c. voltage signal received to vehicle-mounted electrical appliance.The utility model improves the degree of regulation of output voltage, is realized with a kind of cost-effective solution and stablize to output voltage, rapidly adjust.
Description
Technical field
The utility model relates to a kind of automobile-used voltage regulator circuits.
Background technique
With the fast development of automobile industry, electronic technology is used widely in automobile, the quantity of vehicle-mounted electrical appliance
It is also all continuously increased with type.On the one hand, the operating voltage of different vehicle-mounted electrical appliances is often different, and is needed to output extremely
The voltage of different electrical appliances is adjusted, on the other hand, by the working condition for adjusting the adjustable electrical appliance of operating voltage.Cause
This, the design of automobile-used voltage regulator circuit is just particularly important.
But there is also some defects in the design aspect of automobile-used voltage regulator circuit for the prior art.Firstly, general vehicle
It need to be improved with the output accuracy of voltage regulator circuit, overtension after adjustment or too low phenomenon is deposited, so that vehicle-mounted
Electrical appliance can not work normally；Secondly, lacking the design of short-circuit protection to the voltage exported after adjusting, there are certain safety is hidden
Suffer from；Finally, the adjusting control mode of existing automobile-used voltage regulator circuit is more single, can not be carried out according to the difference of application scenarios
Flexible configuration.
In conclusion this field needs the new automobile-used voltage regulator circuit of one kind to solve the above problems.
Utility model content
The purpose of this utility model is to provide a kind of automobile-used voltage regulator circuits, solve above-mentioned ask to a certain extent
Topic improves the output accuracy for adjusting voltage, the load capacity for adjusting circuit is improved, with a kind of cost-effective solution
It realizes and output voltage stablize, is rapidly adjusted.
Another of the utility model is designed to provide a kind of automobile-used voltage regulator circuit, provides the short of voltage output
Road defencive function effectively prevents the short-circuit damage caused by circuit.
To achieve the goals above, the utility model provides a kind of automobile-used voltage regulator circuit, is adapted to power supply electricity
Source, the power supply include power supply VCC and power supply VC, and the automobile-used voltage regulator circuit includes:
Gear voltage regulation unit, microprocessor, filter shape unit and amplifying unit, wherein the microprocessor
It is separately connected the gear voltage regulation unit, the filter shape unit, one end of the amplifying unit is connected to the filter
Wave shaping unit, the other end of the amplifying unit are adapted to vehicle-mounted electrical appliance, adjust voltage to vehicle-mounted electricity consumption to export
Device；
Power supply VCC be respectively the microprocessor, the filter shape unit, the gear voltage regulation unit power supply,
Power supply VC is amplifying unit power supply, and the gear voltage regulation unit is for generating different gear voltage outputs to described
Microprocessor, the microprocessor carries out AD sampling to the gear voltage received, and will be received according to preset switching strategy
To gear voltage be converted into the pwm signal of corresponding duty ratio and export to the filter shape unit, the filter shape unit
It is that corresponding d. c. voltage signal is exported to the amplifying unit, the amplifying unit by the pwm signal filter shape received
It exports after amplifying processing to the d. c. voltage signal received to vehicle-mounted electrical appliance.
Preferred embodiment according to the present utility model, the gear voltage regulation unit include adjustable resistance RJ, resistance
R10 and capacitor C2, wherein one end of adjustable resistance RJ is adapted to power supply VCC, the other end ground connection of adjustable resistance RJ, electricity
The one end for hindering R10 connects adjustable resistance RJ, and the other end of resistance R10 is connected to the microprocessor, and one end of capacitor C2 is simultaneously
Connect resistance R10 and the microprocessor, the other end ground connection of capacitor C2.
Preferably, the adjustable resistance RJ is potentiometer.
Preferred embodiment according to the present utility model, the filter shape unit include NPN type triode Q1, positive-negative-positive three
Pole pipe Q2, resistance R1, resistance R2, resistance R3, resistance R4 and capacitor C1, wherein the base stage of NPN type triode Q1 is connected to institute
Microprocessor, the emitter ground connection of NPN type triode Q1 are stated, the collector of NPN type triode Q1 is connected to positive-negative-positive through resistance R1
The base stage of triode Q2, one end of resistance R2 are connected to resistance R1, and the other end of resistance R2 is connected to PNP type triode Q2 simultaneously
Emitter and power supply VCC, resistance R3, resistance R4, capacitor C1 three be mutually connected in series, the public termination of resistance R3 and capacitor C1
The common end of ground, resistance R3 and resistance R4 are connected to the collector of PNP type triode Q2.
Preferred embodiment according to the present utility model, the amplifying unit include operational amplifier U1, resistance R5, resistance
R6 and resistance R7, the normal phase input end of operational amplifier U1 are connected to the common end of resistance R4 and capacitor C1, and the one of resistance R5
The inverting input terminal of end connection operational amplifier U1, the other end ground connection of resistance R5, one end of resistance R6 connects operational amplifier
The output end of U1, the common end of the other end connection operational amplifier U1 and resistance R5 of resistance R6, one end of resistance R7 connects electricity
Hinder R6, the other end ground connection of resistance R7.
Further, the automobile-used voltage regulator circuit of the utility model further comprises short-circuit protection unit, described
Short-circuit protection unit is connected to the amplifying unit and the microprocessor, described short when the amplifying unit short circuit
Road protection location exports alarm signal to the microprocessor, and the microprocessor closes pwm signal after receiving alarm signal
Output.
Preferred embodiment according to the present utility model, the short-circuit protection unit include resistance R8, resistance R9 and NPN
The base stage of type triode Q3, NPN type triode Q3 are connected to resistance R7 through resistance R8, and the emitter of NPN type triode Q3 is grounded,
The collector of NPN type triode Q3 is connected to power supply VCC, the collector of NPN type triode Q3 and the public affairs of resistance R9 through resistance R9
End is connected to the microprocessor altogether.
Compared to the prior art, the utility model has the beneficial effects that:
(1) tune to output voltage can be realized by the resistance value of adjusting adjustable resistance RJ and the duty ratio of pwm signal
Section, improve adjust voltage output accuracy, with a kind of cost-effective solution realize to output voltage carry out stablize,
It rapidly adjusts.
(2) short-circuit protection function of voltage output is provided, the short-circuit damage caused by circuit is effectively prevented.
The above-mentioned and other purpose of the utility model, feature, advantage will in the following detailed description, attached drawing and
The attached claims further clarify.
Detailed description of the invention
Fig. 1 is the block diagram of the automobile-used voltage regulator circuit of preferred embodiment according to the present utility model；
Fig. 2 is the circuit diagram of the automobile-used voltage regulator circuit of preferred embodiment according to the present utility model；
In figure: gear voltage regulation unit 10；Microprocessor 20；Filter shape unit 30；Amplifying unit 40；Short-circuit protection
Unit 50.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to utility model, it should be noted that
Under the premise of not colliding, new reality can be formed between various embodiments described below or between each technical characteristic in any combination
Apply example.
It is described below for disclosing the utility model so that those skilled in the art can be realized the utility model.It retouches below
Preferred embodiment in stating is only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.It is retouched following
The basic principle of the utility model defined in stating can be applied to other embodiments, deformation scheme, improvement project, etc. Tongfangs
The other technologies scheme of case and the spirit and scope without departing from the utility model.
It will be understood by those skilled in the art that in the exposure of the utility model, term " longitudinal direction ", " transverse direction ", "upper",
The orientation or position of the instructions such as "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside"
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
Above-mentioned term should not be understood as limiting the present invention.
It is understood that term " one " is interpreted as " at least one " or " one or more ", i.e., in one embodiment,
The quantity of one element can be one, and in a further embodiment, the quantity of the element can be it is multiple, term " one " is no
It can be interpreted as the limitation to quantity.
Referring to Fig. 1 to Fig. 2 of attached drawing, the automobile-used voltage regulator circuit of preferred embodiment according to the present utility model will connect
It is elucidated in the description got off, which raises the output accuracy for adjusting voltage, the load capacity for adjusting circuit is improved, with one kind
Cost-effective solution, which is realized, stablize to output voltage, rapidly adjust.
As shown in Fig. 1, the automobile-used voltage regulator circuit includes gear voltage regulation unit 10, microprocessor 20, filter
Wave shaping unit 30 and amplifying unit 40, wherein the microprocessor 20 be separately connected the gear voltage regulation unit 10,
The filter shape unit 30, one end of the amplifying unit 40 are connected to the filter shape unit 30, the amplifying unit
40 other end is adapted to vehicle-mounted electrical appliance, adjusts voltage to vehicle-mounted electrical appliance to export.Power supply VCC is respectively described micro-
Processor 20, the filter shape unit 30, the gear voltage regulation unit 10 power supply, power supply VC are the amplifying unit 40
Power supply.
It will be readily appreciated by those skilled in the art that the power supply VC is 12V or 24V voltage, the power supply VCC is 3.3V
Or 5V voltage.
The gear voltage regulation unit 10 is used to generate different gear voltage outputs to the microprocessor 20, described
Microprocessor 20 carries out AD sampling, and the gear voltage that will be received according to preset switching strategy to the gear voltage received
The pwm signal for being converted into corresponding duty ratio is exported to the filter shape unit 30.The filter shape unit 30 will receive
Pwm signal filter shape be that corresponding d. c. voltage signal is exported to the amplifying unit 40, the amplifying unit 40 docks
The d. c. voltage signal received exports after amplifying processing to vehicle-mounted electrical appliance.
Illustratively, the vehicle-mounted electrical appliance can be, but not limited to as electricity consumptions such as automobile lamp group, lamp group height adjustment motors
Equipment, to realize the adjusting of the bright dark degree of light or the adjusting of lamp group height by the adjusting of output voltage.
Referring to Fig. 2 of attached drawing, more specifically for, the gear voltage regulation unit 10 include adjustable resistance RJ, resistance
R10 and capacitor C2, wherein one end of adjustable resistance RJ is adapted to power supply VCC, the other end ground connection of adjustable resistance RJ.Electricity
The one end for hindering R10 connects adjustable resistance RJ, and the other end of resistance R10 is connected to the microprocessor 20, and one end of capacitor C2 is same
When the connection resistance R10 and microprocessor 20, capacitor C2 other end ground connection.
Preferably, the adjustable resistance RJ is potentiometer, is operated convenient for user.
Further, the filter shape unit 30 includes NPN type triode Q1, PNP type triode Q2, resistance R1, electricity
Hinder R2, resistance R3, resistance R4 and capacitor C1.The base stage of NPN type triode Q1 is connected to the microprocessor 20, NPN type three
The emitter of pole pipe Q1 is grounded, and the collector of NPN type triode Q1 is connected to the base stage of PNP type triode Q2 through resistance R1.Electricity
One end of resistance R2 is connected to resistance R1, and the other end of resistance R2 is connected to the emitter and power supply of PNP type triode Q2 simultaneously
VCC.Resistance R3, resistance R4, capacitor C1 three are mutually connected in series, the common end grounding of resistance R3 and capacitor C1, resistance R3 and resistance
The common end of R4 is connected to the collector of PNP type triode Q2.
Further, the amplifying unit 40 includes operational amplifier U1, resistance R5, resistance R6 and resistance R7.Operation
The normal phase input end of amplifier U1 is connected to the common end of resistance R4 and capacitor C1, and one end of resistance R5 connects operational amplifier U1
Inverting input terminal, resistance R5 the other end ground connection.The output end of one end connection operational amplifier U1 of resistance R6, resistance R6's
The common end of the other end connection operational amplifier U1 and resistance R5.One end of resistance R7 connects resistance R6, the other end of resistance R7
Ground connection.
The working principle of automobile-used voltage regulator circuit provided by the utility model is as follows:
The size for accessing the effective resistance of circuit by changing adjustable resistance RJ, exports different size of gear voltage Vadj
To the microprocessor 20.The microprocessor 20 carries out AD sampling to the gear voltage Vadj received, and according to preset
Switching strategy exports the gear voltage Vadj received the pwm signal for being converted into corresponding duty ratio to the filter shape unit
30。
Specifically, the pwm signal that the microprocessor 20 exports flows into the base stage of NPN type triode Q1, so that NPN
Type triode Q1 conducting.When NPN type triode Q1 conducting, the voltage in PNP type triode Q2 base stage is lower than PNP type triode
Voltage on Q2 emitter, therefore PNP type triode Q2 is connected.When NPN type triode Q1 shutdown, PNP type triode Q2 base
Voltage on extremely is equal to the voltage on PNP type triode Q2 emitter, therefore PNP type triode Q2 is closed.That is, PNP
The switch state of type triode Q2 is synchronous with the holding of the switch state of NPN type triode Q1.Therefore, it is transmitted to PNP type triode
The duty ratio of pwm signal at Q2 remains unchanged.Pwm signal filter shape is corresponding DC voltage by resistance R4 and capacitor C1
Signal TV1 is exported to the amplifying unit 40.
The amplifying unit 40 exports after amplifying processing to the d. c. voltage signal TV1 received to vehicle-mounted electricity consumption
Device, amplified d. c. voltage signal Vout=(1+R6/R5) * TV1.
Preferably, the model R5F21236 or R5F10BGD of the microprocessor 20, the type of the operational amplifier U1
Number be LM258.
Therefore, in automobile-used voltage regulator circuit provided by the utility model, by the resistance for adjusting adjustable resistance RJ
The adjusting to output voltage can be realized in value and the duty ratio of pwm signal, the output accuracy for adjusting voltage is improved, with a kind of warp
Ji effective solution scheme, which is realized, stablize to output voltage, rapidly adjust.
It is noted that the automobile-used voltage regulator circuit of the utility model further comprises short-circuit protection unit
50, the short-circuit protection unit 50 is connected to the amplifying unit 40 and the microprocessor 20.When the amplifying unit
When 40 short circuit, the short-circuit protection unit 50 exports alarm signal to the microprocessor 20, and the microprocessor 20 receives
Pwm signal output is closed after alarm signal, to play the role of protecting circuit.
Specifically, the short-circuit protection unit 50 includes resistance R8, resistance R9 and NPN type triode Q3.NPN
The base stage of type triode Q3 is connected to resistance R7, the emitter ground connection of NPN type triode Q3, NPN type triode Q3 through resistance R8
Collector be connected to power supply VCC through resistance R9, the collector of NPN type triode Q3 and the common end of resistance R9 are connected to described
Microprocessor 20.
In the present embodiment, in the state of there is no short circuit, the output of short-circuit protection unit 50 to micro- place
The INst signal for managing device 20 is high level；When short circuit occurs in the amplifying unit 40, the INst signal is by high level signal
Become low level signal.When the microprocessor 20 detects that the INst signal is low level, then the defeated of pwm signal is closed
Out.Design in this way, the utility model provide the short-circuit protection function of voltage output, effectively prevent short circuit to circuit
Caused by damage.
It should be understood by those skilled in the art that foregoing description and the embodiments of the present invention shown in the drawings are only used as
It illustrates and is not intended to limit the utility model.The purpose of this utility model completely and effectively realizes.The function of the utility model
Energy and structural principle show and illustrate in embodiment, under without departing from the principle, the embodiments of the present invention
Can there are any deformation or modification.
Claims (5)
1. a kind of automobile-used voltage regulator circuit, it being adapted to power supply, the power supply includes power supply VCC and power supply VC,
It is characterized in that, the automobile-used voltage regulator circuit includes:
Gear voltage regulation unit, microprocessor, filter shape unit and amplifying unit, wherein the microprocessor is distinguished
The gear voltage regulation unit, the filter shape unit are connected, it is whole that one end of the amplifying unit is connected to the filtering
Shape unit, the other end of the amplifying unit are adapted to vehicle-mounted electrical appliance, adjust voltage to vehicle-mounted electrical appliance to export；
Power supply VCC is respectively the microprocessor, the filter shape unit, gear voltage regulation unit power supply, power supply
VC is amplifying unit power supply, and the gear voltage regulation unit is for generating different gear voltage outputs to micro- place
Manage device, the microprocessor carries out AD sampling to the gear voltage that receives, and will receive according to preset switching strategy
The pwm signal that gear voltage is converted into corresponding duty ratio is exported to the filter shape unit, and the filter shape unit will connect
The pwm signal filter shape received is that corresponding d. c. voltage signal is exported to the amplifying unit, the amplifying unit docking
The d. c. voltage signal received exports after amplifying processing to vehicle-mounted electrical appliance.
2. automobile-used voltage regulator circuit as described in claim 1, which is characterized in that the gear voltage regulation unit includes can
Resistance RJ, resistance R10 and capacitor C2 are adjusted, wherein one end of adjustable resistance RJ is adapted to power supply VCC, adjustable resistance RJ's
One end of other end ground connection, resistance R10 connects adjustable resistance RJ, and the other end of resistance R10 is connected to the microprocessor, capacitor
One end of C2 connects resistance R10 and the microprocessor, the other end ground connection of capacitor C2 simultaneously；
The filter shape unit includes NPN type triode Q1, PNP type triode Q2, resistance R1, resistance R2, resistance R3, resistance
R4 and capacitor C1, wherein the base stage of NPN type triode Q1 is connected to the microprocessor, the emitter of NPN type triode Q1
Ground connection, the collector of NPN type triode Q1 are connected to the base stage of PNP type triode Q2, one end connection of resistance R2 through resistance R1
In resistance R1, the other end of resistance R2 is connected to the emitter and power supply VCC of PNP type triode Q2, resistance R3, resistance simultaneously
R4, capacitor C1 three are mutually connected in series, the common end grounding of resistance R3 and capacitor C1, and the common end of resistance R3 and resistance R4 are connected to
The collector of PNP type triode Q2；
The amplifying unit includes operational amplifier U1, resistance R5, resistance R6 and resistance R7, the positive of operational amplifier U1
Input terminal is connected to the common end of resistance R4 and capacitor C1, and one end of resistance R5 connects the inverting input terminal of operational amplifier U1,
The other end of resistance R5 is grounded, and the output end of one end connection operational amplifier U1 of resistance R6, the other end of resistance R6 connects fortune
The common end of amplifier U1 and resistance R5 are calculated, one end of resistance R7 connects resistance R6, the other end ground connection of resistance R7.
3. automobile-used voltage regulator circuit as claimed in claim 2, which is characterized in that the adjustable resistance RJ is potentiometer.
4. automobile-used voltage regulator circuit as claimed in any one of claims 1-3, which is characterized in that further comprise short-circuit guarantor
Unit is protected, the short-circuit protection unit is connected to the amplifying unit and the microprocessor, the short-circuit protection unit
It detects and exports alarm signal to the microprocessor after short circuit occurs in the amplifying unit, the microprocessor receives alarm
Pwm signal output is closed after signal.
5. automobile-used voltage regulator circuit as claimed in claim 4, which is characterized in that the short-circuit protection unit includes resistance
The base stage of R8, resistance R9 and NPN type triode Q3, NPN type triode Q3 are connected to the amplifying unit, NPN through resistance R8
The emitter of type triode Q3 is grounded, and the collector of NPN type triode Q3 is connected to power supply VCC, NPN type triode through resistance R9
The collector of Q3 and the common end of resistance R9 are connected to the microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821584150.1U CN208754267U (en) | 2018-09-27 | 2018-09-27 | A kind of automobile-used voltage regulator circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821584150.1U CN208754267U (en) | 2018-09-27 | 2018-09-27 | A kind of automobile-used voltage regulator circuit |
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| Publication Number | Publication Date |
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| CN208754267U true CN208754267U (en) | 2019-04-16 |
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ID=66085233
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| CN201821584150.1U Active CN208754267U (en) | 2018-09-27 | 2018-09-27 | A kind of automobile-used voltage regulator circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109150165A (en) * | 2018-09-27 | 2019-01-04 | 宁波兴为汽车电子有限公司 | A kind of automobile-used voltage regulator circuit and its operation method |
-
2018
- 2018-09-27 CN CN201821584150.1U patent/CN208754267U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109150165A (en) * | 2018-09-27 | 2019-01-04 | 宁波兴为汽车电子有限公司 | A kind of automobile-used voltage regulator circuit and its operation method |
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