CN206713105U - The switch power source driving circuit of daytime running lights and steering indicating light - Google Patents
The switch power source driving circuit of daytime running lights and steering indicating light Download PDFInfo
- Publication number
- CN206713105U CN206713105U CN201720122852.7U CN201720122852U CN206713105U CN 206713105 U CN206713105 U CN 206713105U CN 201720122852 U CN201720122852 U CN 201720122852U CN 206713105 U CN206713105 U CN 206713105U
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- China
- Prior art keywords
- indicating light
- steering indicating
- daytime running
- running lights
- source driving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
It the utility model is related to technical field of automotive electronics, more particularly to the switch power source driving circuit of daytime running lights and steering indicating light, including single-chip microcomputer, DC DC power modules, first switching element, second switch element, daytime running lights LED strip and steering indicating light LED strip, single-chip microcomputer, DC DC power modules, daytime running lights LED strip and first switching element are sequentially connected composition daytime running lights control loop, and single-chip microcomputer, DC DC power modules, steering indicating light LED strip and second switch element are sequentially connected composition steering indicating light control loop.The utility model reduces the cost of headlamp, is driven while two or more sets original power supplys is now only needed one group of power module, while realize daytime running lights and steering indicating light, greatly reduces development difficulty and testing expenses.
Description
Technical field
It the utility model is related to technical field of automotive electronics, more particularly to daytime running lights and the Switching Power Supply of steering indicating light driving electricity
Road.
Background technology
With the popularization of automobile, LED car lamp gradually substitutes bulb to turn into future trend.Daytime running lights are to make vehicle on daytime
It is easier to be recognized by people during traveling, while also may be such that automobile seems more extremely to dazzle.In recent years, many countries have formulated daytime running lights
Relevant criterion, wherein European daytime running lights be forced requirement installation.In order to really play the effect of ensuring safety, to daytime running lights
Brightness to related definition has been carried out using logic, can shadow because the brightness of most of daytime running lights is very high, when daytime running lights are lighted
The observability of steering indicating light is rung, so when common definition is that steering indicating light is bright, daytime running lights can be extinguished.
Daytime running lights and steering indicating light are often designed using plurality of LEDs, and now, Switching Power Supply is preferred, Switching Power Supply product sheet
Have extensively in various technical fields such as army's industry, scientific research, communication, medicine equipment, household electrical appliance, automotive electronics and digital instruments
General application.The advantages of Switching Power Supply, includes big, output voltage stabilization of efficiency high, small volume, power etc., but also has anti-electromagnetism to do
Disturb the shortcomings of ability, cost are high, exploitation is high.
At present, the driving of daytime running lights and steering indicating light is typically two groups of Switching Power Supplies, the design of two or more sets Switching Power Supplies
The double use including devices such as switch chip, power inductance, Schottky diode, power MOS pipes is often meant that, except member
Part cost it is double, the electromagnetic compatibility of Switching Power Supply is the difficult point designed and developed, and the experiment of each group of Switching Power Supply means several
Ten expenses even up to a million.
Utility model content
The utility model provides the switch power source driving circuit of a kind of daytime running lights and steering indicating light, and preceding photograph greatly reduces
The exploitation of lamp and manufacturing cost.
In order to realize the purpose of this utility model, used technical scheme is：The Switching Power Supply of daytime running lights and steering indicating light
Drive circuit, including single-chip microcomputer, DC-DC power module, first switching element, second switch element, daytime running lights LED strip and steering
Lamp LED strip, single-chip microcomputer, DC-DC power module, daytime running lights LED strip and first switching element are sequentially connected composition daytime running lights control
Loop, single-chip microcomputer, DC-DC power module, steering indicating light LED strip and second switch element are sequentially connected composition steering indicating light and controlled back
Road.
As prioritization scheme of the present utility model, the switch power source driving circuit of daytime running lights and steering indicating light also includes input filter
Wave circuit, the output end of input filter circuit and the power input of DC-DC power module connect.
As prioritization scheme of the present utility model, input filter circuit is " π " type filter circuit, " π " type filter circuit bag
Include the first electric capacity DC7, the second electric capacity DC8 and inductance L, inductance L one end is connected with the first electric capacity DC7, the inductance L other end with
Second electric capacity DC8 connections.
As prioritization scheme of the present utility model, the switch power source driving circuit of daytime running lights and steering indicating light is also including anti-reverse
Diode DD1, anti-reverse diode DD1 positive pole are connected with power supply, anti-reverse diode DD1 negative pole and input filter
The input of circuit is connected.
As prioritization scheme of the present utility model, anti-reverse diode DD1 negative pole is single-chip microcomputer by LDO mu balanced circuits
Power supply.
As prioritization scheme of the present utility model, first switching element and second switch element are metal-oxide-semiconductor.
The utility model has positive effect：1) the utility model reduces the cost of headlamp, make original two groups or
Multi-group power now only needs one group of power module, while drives while realize daytime running lights and steering indicating light；
2) the utility model reduces development difficulty, reduces the testing expenses of Switching Power Supply, it is only necessary to completes one group and opens
The EMC test in powered-down source；
3) the utility model improves the utilization rate of integrated circuit；Make modular application, greatly reduce exploitation into
This.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is logical circuitry of the present utility model.
Wherein：1st, single-chip microcomputer, 2, DC-DC power module, 3, first switching element, 4, second switch element, 5, daytime running lights
LED strip, 6, steering indicating light LED strip, 7, input filter circuit, 8, LDO mu balanced circuits.
Embodiment
As shown in figure 1, the utility model discloses daytime running lights and the switch power source driving circuit of steering indicating light, including single-chip microcomputer
1st, DC-DC power module 2, first switching element 3, second switch element 4, daytime running lights LED strip 5 and steering indicating light LED strip 6, monolithic
Machine 1, DC-DC power module 2, daytime running lights LED strip 5 and first switching element 3 are sequentially connected composition daytime running lights control loop, monolithic
Machine 1, DC-DC power module 2, steering indicating light LED strip 6 and second switch element 4 are sequentially connected composition steering indicating light control loop.Its
In, daytime running lights LED strip 5 is DL1-DLx, steering indicating light TL1-TLx.The switch power source driving circuit of daytime running lights and steering indicating light is to supplying
Electric power input voltage carries out impulse modulation, realizes voltage transformation, and output voltage can reconcile voltage stabilizing.
The switch power source driving circuit of daytime running lights and steering indicating light also includes input filter circuit, the output of input filter circuit
End is connected with the power input of DC-DC power module 2.Wherein, input filter circuit is " π " type filter circuit, and " π " type filters
Circuit includes the first electric capacity DC7, the second electric capacity DC8 and inductance L, and inductance L one end is connected with the first electric capacity DC7, and inductance L's is another
One end is connected with the second electric capacity DC8.Input filter circuit can effectively filter out input power electromagnetic interference.
The switch power source driving circuit of daytime running lights and steering indicating light also includes anti-reverse diode DD1, anti-reverse diode DD1
Positive pole be connected with power supply, anti-reverse diode DD1 negative pole is connected with the input of input filter circuit.Anti-reverse two
Pole pipe DD1 negative pole is that single-chip microcomputer 1 is powered by LDO mu balanced circuits.LDO mu balanced circuits are that single-chip microcomputer 1 provides stable 5V electricity
Pressure output,
First switching element 3 and second switch element 4 are metal-oxide-semiconductor.
DC-DC power module 2 connects daytime running lights LED strip 5 and steering indicating light LED strip 6 simultaneously, and single-chip microcomputer control is opened to induction signal
Qi Shi, light corresponding daytime running lights LED strip 5 or steering indicating light LED strip 6.
When the engine for starting vehicle is normally driven a vehicle, daytime running lights signal is effective, and now, single-chip microcomputer 1 exports daytime running lights PWM
Signal, control DC-DC power module 2 export the driving frequency of daytime running lights LED strip 5, and single-chip microcomputer 1 controls first switching element 3 to beat
Open, light daytime running lights LED strip 5.
When needing to open steering indicating light in driving conditions, steering indicating light function is effective, daytime running lights Signal Fail, now, monolithic
Machine 1 exports steering indicating light pwm signal, and control DC-DC power module 2 exports the driving frequency of steering indicating light LED strip 6, and single-chip microcomputer 1 controls
Second switch element 4 is opened, and lights steering indicating light LED strip 6, and now, single-chip microcomputer 1 controls first switching element 3 to disconnect, daytime running lights
LED strip 5 will not be lit.
Particular embodiments described above, the purpose of this utility model, technical scheme and beneficial effect are carried out to enter one
Step describes in detail, should be understood that and the foregoing is only specific embodiment of the utility model, is not limited to this
Utility model, it is all within the spirit and principles of the utility model, any modification, equivalent substitution and improvements done etc., it all should wrap
It is contained within the scope of protection of the utility model.
Claims (6)
1. the switch power source driving circuit of daytime running lights and steering indicating light, it is characterised in that：Including single-chip microcomputer (1), DC-DC power module
(2), first switching element (3), second switch element (4), daytime running lights LED strip (5) and steering indicating light LED strip (6), described monolithic
Machine (1), DC-DC power module (2), daytime running lights LED strip (5) and first switching element (3) are sequentially connected composition daytime running lights control
Loop, described single-chip microcomputer (1), DC-DC power module (2), steering indicating light LED strip (6) and second switch element (4) are sequentially connected
Form steering indicating light control loop.
2. the switch power source driving circuit of daytime running lights according to claim 1 and steering indicating light, it is characterised in that：Described day
The switch power source driving circuit of portable lighter and steering indicating light also includes input filter circuit (7), the output end of input filter circuit (7) with
The power input connection of DC-DC power module (2).
3. the switch power source driving circuit of daytime running lights according to claim 2 and steering indicating light, it is characterised in that：The input
Filter circuit (7) is " π " type filter circuit, and described " π " type filter circuit includes the first electric capacity DC7, the second electric capacity DC8 and electricity
Feel L, inductance L one end is connected with the first electric capacity DC7, and the inductance L other end is connected with the second electric capacity DC8.
4. the switch power source driving circuit of daytime running lights according to claim 2 and steering indicating light, it is characterised in that：Described day
The switch power source driving circuit of portable lighter and steering indicating light also includes anti-reverse diode DD1, anti-reverse diode DD1 positive pole and confession
Power supply is connected, and anti-reverse diode DD1 negative pole is connected with the input of input filter circuit (7).
5. the switch power source driving circuit of daytime running lights according to claim 4 and steering indicating light, it is characterised in that：Anti-reverse two
Pole pipe DD1 negative pole is powered by LDO mu balanced circuits (8) for single-chip microcomputer (1).
6. the switch power source driving circuit of daytime running lights according to claim 1 and steering indicating light, it is characterised in that：Described
One switch element (3) and second switch element (4) are metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720122852.7U CN206713105U (en) | 2017-02-10 | 2017-02-10 | The switch power source driving circuit of daytime running lights and steering indicating light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720122852.7U CN206713105U (en) | 2017-02-10 | 2017-02-10 | The switch power source driving circuit of daytime running lights and steering indicating light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206713105U true CN206713105U (en) | 2017-12-05 |
Family
ID=60472822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720122852.7U Active CN206713105U (en) | 2017-02-10 | 2017-02-10 | The switch power source driving circuit of daytime running lights and steering indicating light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206713105U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108419327A (en) * | 2017-02-10 | 2018-08-17 | 常州星宇车灯股份有限公司 | The switch power source driving circuit of daytime running lights and steering indicating light |
| CN113035138A (en) * | 2021-03-09 | 2021-06-25 | 京东方科技集团股份有限公司 | Driving circuit, display screen and driving method |
-
2017
- 2017-02-10 CN CN201720122852.7U patent/CN206713105U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108419327A (en) * | 2017-02-10 | 2018-08-17 | 常州星宇车灯股份有限公司 | The switch power source driving circuit of daytime running lights and steering indicating light |
| CN113035138A (en) * | 2021-03-09 | 2021-06-25 | 京东方科技集团股份有限公司 | Driving circuit, display screen and driving method |
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