CN206077779U - Four paths of LEDs drive modules - Google Patents
Four paths of LEDs drive modules Download PDFInfo
- Publication number
- CN206077779U CN206077779U CN201621107954.3U CN201621107954U CN206077779U CN 206077779 U CN206077779 U CN 206077779U CN 201621107954 U CN201621107954 U CN 201621107954U CN 206077779 U CN206077779 U CN 206077779U
- Authority
- CN
- China
- Prior art keywords
- led
- paths
- microprocessor
- leds
- constant
- 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.)
- Active
Links
Landscapes
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
This utility model is related to a kind of four paths of LEDs drive module, including power supply, microprocessor containing PWM controller, constant pressure fan drive circuit and four LED constant-current drive circuits, the constant pressure fan drive circuit and four LED constant-current drive circuits are connected with the power supply respectively, the power supply Jing manostat is connected with the microprocessor, pwm control signal input per constant current driver circuit for LED described all the way connects a pwm control signal outfan of the microprocessor, outer meeting resistance connection end is equipped with per constant current driver circuit for LED described all the way, the microprocessor connects a permanent memory memorizer by SPI communication EBI thereon.This utility model provides a kind of four paths of LEDs drive module, it is adaptable to LED headlamps, highly versatile, can meet the demand of major part LED headlamps, and low cost, stable performance.
Description
Technical field
This utility model is related to a kind of four paths of LEDs drive modules for automobile lamp, more particularly to a kind of highly versatile
The four paths of LEDs drive modules suitable for LED headlamps.
Background technology
The current LED headlamps extensive utilization on automobile.What vehicle power usually can not be powered directly to LED,
Therefore it is accomplished by solving the problems, such as power conversion, therefore has LED drive module.LED belongs to electric current controlling semiconductor device, can
Its luminosity is controlled with by controlling LED current, therefore the driving using current constant mode being capable of constant LED luminance.It is existing
LED drive module be all that single channel or two-way drive, two-way above drive module is fewer, even if there is also versatility not strong,
The demand of most LED headlamps is not adapted to.
The content of the invention
To overcome the drawbacks described above of prior art, this utility model to provide a kind of four paths of LEDs drive module, it is adaptable to
LED headlamps, highly versatile can meet the demand of major part LED headlamps, and low cost, stable performance.
Main technical schemes of the present utility model have：
A kind of four paths of LEDs drive modules, including power supply, the microprocessor containing PWM controller, constant pressure fan drive circuit and
Every power supply all the way of four LED constant-current drive circuits, the constant pressure fan drive circuit and four LED constant-current drive circuits is defeated
Enter end to be directly connected to the power supply respectively, the power supply Jing manostat is connected with the microprocessor, it is permanent per LED described all the way
The pwm control signal input of stream drive circuit connects a pwm control signal outfan of the microprocessor, per institute all the way
State constant current driver circuit for LED and be equipped with outer meeting resistance connection end.
The microprocessor is provided with voltage sample input, the power input per constant current driver circuit for LED described all the way
It is connected with a voltage sample input respectively.
The fault detect respectively with the microprocessor of fault detect outfan per constant current driver circuit for LED described all the way
One failure feedback input end connection of circuit.
The microprocessor can pass through SPI communication EBI thereon and connect a permanent memory memorizer.
The memorizer is preferably band EEPROM.
LIN EBIs can be provided with the microprocessor.
The manostat is preferably low pressure difference linear voltage regulator.
The constant current driver circuit for LED can adopt DC-DC Buck-Boost circuits or DC-DC Boost circuits, described
Constant pressure fan drive circuit can adopt DC-DC Buck circuits.
Peak power output per constant current driver circuit for LED described all the way can reach 25W.
Four LED constant-current drive circuits can be respectively the dipped beam of LED headlamps, distance light, day portable lighter/position lamp,
The drive circuit of steering indicating light.
The power supply can be Switching Power Supply.
The beneficial effects of the utility model are：
1st, due to being provided with 4 road DC-DC constant-current circuits and 1 transportation work style fan constant voltage circuit, and per road maximum output up to 25W, tool
There is stronger versatility, can adapt to the demand of most of LED headlamps, such as 4 road DC-DC constant-current circuits can be used for driving
The dipped beam of LED headlamps, distance light, day portable lighter/position lamp, steering indicating light；
2nd, the connection end of outer meeting resistance is provided with, every road DC-DC circuit output can be adjusted by outer meeting resistance (RES)
LED current；
3rd, the connection end of external critesistor is provided with, LED temperature can be detected by external critesistor, if LED
Temperature exceedes certain numerical value, just reduces LED output currents, so as to realize LED overheat protector functions；
4th, the microprocessor can receive LED failure detection feedback, by failure feedback (FLT) by every road DC-DC
To microprocessor, the failure of every paths of LEDs is detected, simultaneously because the microprocessor is also associated with eeprom memory, can be deposited
Fault message is stored up in EEPROM, so as to the analysis of convenient failure part after sale, in addition, microprocessor can also communicate handle by LIN
Fault message feeds back to BCM.
5th, by per constant current driver circuit for LED described all the way power input voltage sample and detect, Ke Yifen
4 paths of LEDs output currents are not adjusted, the function of LED outputs is turned off when LED current, high pressure so as to realize reducing during low pressure, is thus filled
Code insurance protects LED.
Description of the drawings
Fig. 1 is schematic block circuit diagram of the present utility model；
Fig. 2 is the electrical block diagram of one embodiment of the present utility model.
Specific embodiment
The utility model discloses a kind of four paths of LEDs drive modules suitable for LED headlamps, as shown in Figure 1, 2, including
Power supply, the microprocessor containing PWM controller, constant pressure fan drive circuit and 4 LED constant-current drive circuits, the constant pressure fan
Drive circuit is used to drive fan, can be used for driving a paths of LEDs per constant current driver circuit for LED described all the way, and described in 4 tunnels, LED is permanent
Stream drive circuit can drive 4 paths of LEDs, for example, can drive the dipped beam of LED headlamps, distance light, day portable lighter/position lamp, steering indicating light,
Therefore the four paths of LEDs drive module can meet the demand of most LED headlamps, with stronger versatility.The perseverance
Every power input all the way of pressure fan drive circuit and 4 LED constant-current drive circuits is directly connected to the power supply respectively,
Directly powered by the power supply, certainly, the power supply can be provided with multiple-channel output, for example, export different voltages, be split up into difference
Subsequent conditioning circuit power, to meet the power demands of different circuits.The power supply Jing manostat is connected with the microprocessor, from
And stable voltage output is provided for the microprocessor.Pwm control signal per constant current driver circuit for LED described all the way is input into
One pwm control signal outfan of the end connection microprocessor, the microprocessor output pwm control signal (PWM1,
PWM2, PWM3, PWM4) control to carry out PWM count word light modulation per constant current driver circuit for LED described all the way.Using this type of drive
Phase ratio resistance current limliting drives and linear constant current drives its circuit loss little, is efficiency highest one kind in current power conversion, can
Up to more than 80%, therefore can preferably meet the increasing high power of automobile LED headlamp, high brightness demand.Per all the way
The constant current driver circuit for LED is equipped with outer meeting resistance connection end, is adjusted by outer meeting resistance (RES) per LED described all the way
The LED current of constant-current drive circuit output.
Voltage sample input is provided with the microprocessor, the power input of constant current driver circuit for LED described in 4 tunnels point
It is not connected (referring to the connection of LDO front ends in Fig. 2 and the ADC of the microprocessor) with a voltage sample input, from
And realize the power input voltage of constant current driver circuit for LED described in 4 tunnels is detected with the microprocessor, and then 4 tunnels are adjusted respectively
The output current of LED, so as to realize reducing LED current in low pressure, turns off LED outputs in high pressure, and adequately protect LED.
The fault detect respectively with the microprocessor of fault detect outfan per constant current driver circuit for LED described all the way
One failure feedback input end (FLT1, FLT2, FLT3, FLT4) connection of circuit, with the every paths of LEDs of microprocessor detection
Failure, hereafter the microprocessor fault message can be stored, it is also possible to fault message is fed back to host computer.
The microprocessor is provided with SPI communication EBI, and which passes through, and the SPI communication EBI connection one is permanent to be remembered
The property recalled memorizer, after the memorizer power down, data are not lost, can be with the fault message of its each circuit of storage, such as above-mentioned LED
Fault message, to facilitate the statistics of failure, analysis after sale.
The memorizer is preferably band EEPROM (EEPROM).The memorizer can be on computers
Or wipe existing information on special equipment, reprogramming, can plug and play, it is easy to use.
LIN EBIs are also provided with the microprocessor, when for communication between the microprocessor and automobile BCM
When, compare and use CAN, cost can be greatlyd save.The microprocessor is connected with automobile BCM by the LIN EBIs
Connect, the fault message of each circuit for detecting can be uploaded to BCM by LIN communications.Alternatively, it is also possible to correspondence it is different before
The difference in functionality of illuminator, writes different software codes, then by LIN in line writing program, makes the four paths of LEDs drive module
The versatility demand of LED headlamps can not only be met, some of personalization demand for control can be also met.
The manostat is preferably low pressure difference linear voltage regulator (LDO), and low in energy consumption due to which, low cost, noise are low, static
Electric current is little, output voltage stabilization, therefore can provide powerful guarantee for the steady operation of the microprocessor.
The constant current driver circuit for LED is DC-DC constant-current circuits, it is preferred to use DC-DC Buck-Boost circuits or DC-
DC Boost circuits, the constant pressure fan drive circuit can adopt DC-DC Buck circuits.
Peak power output per constant current driver circuit for LED described all the way, can be meeting LED headlamps up to 25W
Dipped beam, distance light, the driving of day portable lighter/position lamp, steering indicating light and fan are required.
The power supply can adopt Switching Power Supply, to ensure the voltage output of highly stable and wide scope, and have good
Serial regulation effect.
Bootloader be increased in the microprocessor program, can be easy to control mould by LIN in line writing program
Block hardware and software platform is designed.
Claims (10)
1. a kind of four paths of LEDs drive module, it is characterised in that：Including power supply, the microprocessor containing PWM controller, constant pressure fan
Drive circuit and four LED constant-current drive circuits, the constant pressure fan drive circuit and four LED constant-current drive circuits it is each
The power input on road is connected with the power supply respectively, and the power supply Jing manostat is connected with the microprocessor, per institute all the way
The pwm control signal input for stating constant current driver circuit for LED connects a pwm control signal outfan of the microprocessor,
Outer meeting resistance connection end is equipped with per constant current driver circuit for LED described all the way.
2. four paths of LEDs drive module as claimed in claim 1, it is characterised in that：It is defeated that the microprocessor is provided with voltage sample
Enter end, the power input per constant current driver circuit for LED described all the way is connected with a voltage sample input respectively.
3. four paths of LEDs drive module as claimed in claim 2, it is characterised in that：Per constant current driver circuit for LED described all the way
Fault detect outfan is connected with a failure feedback input end of the failure detector circuit of the microprocessor respectively.
4. four paths of LEDs drive module as claimed in claim 3, it is characterised in that：The microprocessor is led to by SPI thereon
Letter EBI connects a permanent memory memorizer.
5. four paths of LEDs drive module as claimed in claim 4, it is characterised in that：The memorizer is band electric erazable programmable
Read only memory.
6. four paths of LEDs drive module as claimed in claim 5, it is characterised in that：The microprocessor is provided with LIN buses and connects
Mouthful.
7. four paths of LEDs drive module as claimed in claim 6, it is characterised in that：The manostat is low pressure difference linearity voltage stabilizing
Device.
8. four paths of LEDs drive module as claimed in claim 7, it is characterised in that：The constant current driver circuit for LED adopts DC-
DC Buck-Boost circuits or DC-DC Boost circuits, the constant pressure fan drive circuit adopt DC-DC Buck circuits.
9. four paths of LEDs drive module as claimed in claim 8, it is characterised in that：Per constant current driver circuit for LED described all the way
Peak power output reaches 25W.
10. four paths of LEDs drive modules as described in claim 1,2,3,4,5,6,7,8 or 9, it is characterised in that：Four tunnel
Constant current driver circuit for LED is the dipped beam of LED headlamps, distance light, day portable lighter/position lamp, the drive circuit of steering indicating light respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621107954.3U CN206077779U (en) | 2016-10-09 | 2016-10-09 | Four paths of LEDs drive modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621107954.3U CN206077779U (en) | 2016-10-09 | 2016-10-09 | Four paths of LEDs drive modules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206077779U true CN206077779U (en) | 2017-04-05 |
Family
ID=58440360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621107954.3U Active CN206077779U (en) | 2016-10-09 | 2016-10-09 | Four paths of LEDs drive modules |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206077779U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107512216A (en) * | 2017-07-25 | 2017-12-26 | 奇瑞汽车股份有限公司 | The control circuit of automobile daytime driving lamp and position lamp integrated lamp |
| CN107864531A (en) * | 2017-10-31 | 2018-03-30 | 马瑞利汽车零部件(芜湖)有限公司 | The four-way electronic control system of vehicle light illumination control |
| CN109982480A (en) * | 2019-03-14 | 2019-07-05 | 苏州德龙激光股份有限公司 | Four-way LED light source controller based on usb communication |
| CN110996459A (en) * | 2019-12-24 | 2020-04-10 | 上海信耀电子有限公司 | Daytime running light drive circuit with dynamic effect |
| CN111796621A (en) * | 2020-07-16 | 2020-10-20 | 山东超越数控电子股份有限公司 | Constant current source control method based on linear voltage stabilizer and constant current source circuit |
-
2016
- 2016-10-09 CN CN201621107954.3U patent/CN206077779U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107512216A (en) * | 2017-07-25 | 2017-12-26 | 奇瑞汽车股份有限公司 | The control circuit of automobile daytime driving lamp and position lamp integrated lamp |
| CN107512216B (en) * | 2017-07-25 | 2020-10-09 | 奇瑞汽车股份有限公司 | Control circuit of automobile daytime running lamp and position lamp integrated lamp |
| CN107864531A (en) * | 2017-10-31 | 2018-03-30 | 马瑞利汽车零部件(芜湖)有限公司 | The four-way electronic control system of vehicle light illumination control |
| CN109982480A (en) * | 2019-03-14 | 2019-07-05 | 苏州德龙激光股份有限公司 | Four-way LED light source controller based on usb communication |
| CN110996459A (en) * | 2019-12-24 | 2020-04-10 | 上海信耀电子有限公司 | Daytime running light drive circuit with dynamic effect |
| CN111796621A (en) * | 2020-07-16 | 2020-10-20 | 山东超越数控电子股份有限公司 | Constant current source control method based on linear voltage stabilizer and constant current source circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206077779U (en) | Four paths of LEDs drive modules | |
| CN111315070A (en) | Lighting device for implementing multiple lighting functions of motor vehicle by using function-specific light source group | |
| CN103687163B (en) | Light emitting diode driving device and operation method thereof | |
| CN102170733A (en) | Large power LED numerically controlled lighting method | |
| CN204721658U (en) | With the automobile multiple constant current LED illumination circuit of temperature detection | |
| CN107864531B (en) | Four-channel electronic control system for controlling lighting of car lamp | |
| CN206283685U (en) | A kind of day portable lighter and the LED drive circuit of position lamp multiplexing | |
| CN102404921A (en) | Output current adjustable intelligent constant current power supply device | |
| CN102833903B (en) | Load drive circuit | |
| EP3549403B1 (en) | Lighting system | |
| CN103687173B (en) | Universal linear LED drive circuit capable of de-flashing | |
| CN211184358U (en) | DC/DC constant current driving device for automobile L ED steering lamp | |
| EP3095301A1 (en) | A circuit arrangement for operating led strings | |
| CN202026504U (en) | Driving circuit of light emitting diode (LED) constant current source | |
| CN110996459A (en) | Daytime running light drive circuit with dynamic effect | |
| CN206341450U (en) | Great power LED constant-current driven chip | |
| CN207471175U (en) | A kind of light modulation filament lamp | |
| CN102149236B (en) | Light emitting diode bulb capable of working in wide voltage interval | |
| CN209581288U (en) | A kind of headlight for vehicles light dimming electric motor controlled by pwm signal | |
| CN204721668U (en) | A kind of LED control circuit and motor vehicle light source being applied to motor vehicle light source | |
| CN108401312B (en) | LED drive control system | |
| CN107926092B (en) | Energy supply circuit for lighting module | |
| CN217985473U (en) | Adjustable output voltage reduction system based on LED different voltage branch BIN design and vehicle | |
| CN210444536U (en) | Light-operated LED lamp circuit | |
| JP2016012471A (en) | Led lamp unit and lamp device for vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |