CN207854240U - The dynamic steering circuit for lamp of boost function is used in a kind of LED module - Google Patents
The dynamic steering circuit for lamp of boost function is used in a kind of LED module Download PDFInfo
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- CN207854240U CN207854240U CN201820221588.7U CN201820221588U CN207854240U CN 207854240 U CN207854240 U CN 207854240U CN 201820221588 U CN201820221588 U CN 201820221588U CN 207854240 U CN207854240 U CN 207854240U
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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
The utility model discloses the dynamic steering circuit for lamp that boost function is used in a kind of LED module, the corresponding clock signal input foot of control chip and order input pin that the circuit uses signal pins connection corresponding with MCU chip respectively, LED light string is triggered successively by the low and high level of the signal pins output of MCU chip, every group of lamp string common-anode connection in LED light string, input pin corresponding with control chip connects its cathode respectively, failure feedback line is connect with BCM, when automobile lamp can not carry out normal signal prompt, by built in diagnostics detection is provided to Full Vehicle System, and all LED are turned off, inform that car owner's car light breaks down simultaneously, MCU chip sets response data 1/0 and clock cycle, triggering enables pin and controls LED dynamic response times successively.The circuit is stablized with flash frequency, constant current output, and current precision is high, and dynamic response is fast, and ripple is small, low noise and the detection of LED open circuits and defencive function.
Description
Technical field
The utility model is related to a kind of vehicle signal lamp drive circuit, boost function is used in especially a kind of LED module
Dynamic steering circuit for lamp, belong to technical field of automobile illumination.
Background technology
The application of automobile dynamic steering lamp it is universal, it is ensured that driver can provide train signal and night running in time
Good field range, a automobile is with the hot spot that LED dynamic steering constant currents driving is current automotive illumination applications.
Automobile electronics design requirement is stringenter, especially on the lamps and lanterns of security critical performance.One output is steady
Fixed constant-current LED driving is the premise of entire automobile LED lighting system.
Utility model content
To solve when input voltage ratio LED output voltages are low, current value can be decreased obviously, and constant current output is unstable to be lacked
It falls into, the utility model provides the dynamic steering circuit for lamp that boost function is used in a kind of LED module.
To achieve the above object, the utility model uses following technical proposals：
The dynamic steering circuit for lamp of boost function is used in a kind of LED module, it include power input protection circuit,
MPQ3367 integrated circuit modules, MCU integrated circuit modules and LED light string, the control chip in MPQ3367 integrated circuit modules
TLU3 corresponding clock signal input foot SCL and order input pin SDA respectively with the MCU chip in MCU integrated circuit modules
The corresponding signal pins connections of TLU2, LED light string is triggered by the low and high level of the signal pins output of MCU chip TLU2 successively,
Every group of lamp string common-anode connection in LED light string, input pin corresponding with control chip TLU3 connects cathode respectively, controls core
Piece TLU3 is connect by failure feedback line with vehicle body computer BCM, MCU chip TLU2 setting response datas 1/0 and clock cycle, is touched
Hair enables the dynamic response time that pin controls LED successively.
Further, power input protection circuit is by P-MOS pipes S1, the first filter capacitor C1, diode TT2, transient state electricity
Oppressive diode TD5 processed, the 5th to the tenth filter capacitor C5-C10, the 25th divider resistance TR25, the 26th partial pressure electricity
TR26 and voltage stabilizing chip TLU1 compositions are hindered, wherein P-MOS pipes S1 and the first filter capacitor C1 are electrical as steering indicating light power input
Performance and electromagnetic compatibility protect circuit, wherein diode TT2, transient voltage suppressor diode TD5, the 5th to the 8th filter capacitor
5V power supply circuits of the C5-C8 and voltage stabilizing chip TLU1 as MCU chip TLU2, wherein the 9th filter capacitor C9, the tenth filtered electrical
Hold C10, the 25th divider resistance TR25 and the 26th divider resistance TR26 and protects electricity as MCU chip TLU2 power inputs
Road.
Further, MCU integrated circuit modules include MCU chip TLU2, the model of MCU chip TLU2
PIC16F1824, MCU chip TLU2 is as low and high level trigger circuit.
Further, MPQ3367 integrated circuit modules by control chip TLU3, power inductance L1, Schottky diode D1,
First divider resistance R1, the second divider resistance R2, third overvoltage protection resistance R3, the 4th overvoltage protection resistance R4, the 5th to
Seven detection resistance R5-R7, current sampling resistor R8, the second filter capacitor C2, third decoupling capacitor C3 and the 4th decoupling capacitor C4
Composition, wherein switch pin SW, the power inductance L1 of control chip TLU3 and Schottky diode D1 composition Boost topologies circuit,
Wherein control chip TLU3 corresponding pin ISET and current sampling resistor R8 form current regulating circuit, wherein the first partial pressure electricity
It hinders R1 and the second divider resistance R2 composition output open circuits protects circuit.
Further, it includes three or more that MPQ3367 integrated circuit modules, which drive six groups of LED light strings, every group of LED light string,
LED, every group of electric current are up to 150mA.
Further, the clock signal of the model MPQ3367 of control chip TLU3, control chip TLU3 are patrolled by inside
Collect the circulation action time between individually six groups of LED light strings of control.
Advantageous effect：
1. the utility model dynamic steering circuit for lamp direct current input range 3.5V-36V, six road constant current outputs, per road electric current
Up to 150mA is ± 2.5% output current precise current source.Simulation light modulation and PWM light modulations are selected for different application function
It selects.
2. the dynamic steering circuit for lamp of the utility model, when input voltage is higher than LED output voltages, driving is linear drop
Constant current is pressed, when input voltage ratio LED output voltages are low, circuit will be in boost mode.LED connects number in increase
Ensure constant current output.
3. the dynamic steering circuit for lamp of the utility model, there is the detection of LED open circuits and defencive function, automobile lamp can not
When carrying out normal signal prompt, detection is provided to Full Vehicle System by built in diagnostics, and all LED are turned off, accused simultaneously
Know that car owner's car light breaks down.
Description of the drawings
Fig. 1 is the dynamic circuit block diagram that the utility model uses 6 groups of LED light strings；
Fig. 2 is the 5V power supply circuit schematic diagrams of the MCU of the utility model；
Fig. 3 is that the MCU power inputs of the utility model protect circuit diagram；
Fig. 4 is the MPQ3367 integrated circuit schematic diagrams of the utility model.
Specific implementation mode
The utility model is further illustrated with reference to the accompanying drawings and examples.
The present invention proposes to use the dynamic steering circuit for lamp of boost function in a kind of LED module, as shown in Figure 1, it includes
Power input protects circuit, MPQ3367 integrated circuit modules, MCU integrated circuit modules and LED light string, MPQ3367 integrated circuits
Mould control chip TLU3 in the block corresponding clock signal input foot SCL and order input pin SDA respectively with MCU integrated circuit dies
The corresponding signal pins connection of MCU chip TLU2 in the block, the low and high level exported by the signal pins of MCU chip TLU2 is come successively
LED light string is triggered, every group of lamp string common-anode connection in LED light string, cathode input corresponding with control chip TLU3 respectively
Foot connects, and control chip TLU3 is connect by failure feedback line with vehicle body computer BCM, can not normally be believed in automobile lamp
When number prompt, detection is provided to Full Vehicle System by built in diagnostics, and all LED is turned off, while informing that car owner's car light goes out
It existing failure, MCU chip TLU2 setting response datas 1/0 and clock cycle, triggers and enables the dynamic response that pin controls LED successively
Time.
Power input protects circuit to inhibit two poles by P-MOS pipes S1, the first filter capacitor C1, diode TT2, transient voltage
Pipe TD5, the 5th to the tenth filter capacitor C5-C10, the 25th divider resistance TR25, the 26th divider resistance TR26 and steady
Chip TLU1 compositions are pressed, as shown in figure 4, P-MOS pipes S1 and the first filter capacitor C1 are as steering indicating light power input electric property
Circuit is protected with electromagnetic compatibility, meets electrical performance demands and electromagnetic immunity ability, as shown in Fig. 2, diode TT2, transient state are electric
Oppressive diode TD5 processed, the 5th to the 8th filter capacitor C5-C8 and voltage stabilizing chip TLU1 power as the 5V of MCU chip TLU2
Circuit, as shown in figure 3, the 9th filter capacitor C9, the tenth filter capacitor C10, the 25th divider resistance TR25 and the 26th
Divider resistance TR26 protects circuit as MCU chip TLU2 power inputs.
As shown in figure 3, MCU integrated circuit modules include MCU chip TLU2, the model of MCU chip TLU2
PIC16F1824, MCU chip TLU2 is as low and high level trigger circuit.
As shown in figure 4, MPQ3367 integrated circuit modules are by control chip TLU3, power inductance L1, Schottky diode
D1, the first divider resistance R1, the second divider resistance R2, third overvoltage protection resistance R3, the 4th overvoltage protection resistance R4, the 5th to
7th detection resistance R5-R7, current sampling resistor R8, the second filter capacitor C2, third decoupling capacitor C3 and the 4th decoupling capacitor
C4 is formed, wherein switch pin SW, the power inductance L1 of control chip TLU3 and Schottky diode D1 composition Boost topologies return
Road, when input voltage ratio LED output voltages are low, circuit will be in boosting working condition, wherein control chip TLU3 is corresponding
Pin ISET and current sampling resistor R8 form current regulating circuit, wherein the first divider resistance R1 and the second divider resistance R2 groups
Circuit, third decoupling capacitor C3 and the 4th decoupling capacitor C4 is protected mainly to reduce the common-mode noise of circuit at output open circuit.
As shown in figure 4, the model MPQ3367 of the control chip TLU3 in MPQ3367 integrated circuit modules, controls chip
The clock signal of TLU3 individually controls the circulation action time between six groups of LED light strings, every group of LED light string packet by internal logic
Containing three and the above LED, every group of electric current is up to 150mA.
Embodiment 1
In the multigroup LED light string application of steering indicating light, the corresponding ISET feet of control chip TLU3 (MPS3367) connect an electricity
Stream sampling resistor R8 can adjust output current, and calculation formula is ILED (mA)=1249/Riset, passes through MCU chip TLU2
(PIC16F1824) low and high level of signal pins output, the SCL (clock signal) of trigger control chip TLU3, SDA (are ordered successively
Enable input) pin, when high level, LED light string is in work and is always on state.When low level, LED light string is in work shutdown
State.Clock signal individually controls the circulation action time between LED1-LED6 lamp string groups by internal logic, according to MCU core
The response data 1/0 set in piece TLU2 and clock cycle realize the effect of dynamic steering, when a LED therein successively
Damage, open detection circuit can detect out of order unit, all LED be turned off, and be supplied to vehicle body computer BCM, remind
Car owner's car light breaks down.
Embodiment 2
When input voltage is 13.5V, yellow light LED (3V) series connection number is 3, output voltage 9V, and circuit is in linear
It is depressured constant current state, when input voltage is 13.5V, yellow light LED (3V) series connection number is 6, output voltage 18V, in circuit
Power inductance L1, Schottky diode D1 and the SW feet of control chip TLU3 form Boost topology loop starts, LED exists
It will ensure that constant current output, output circuit is driven still to be operated in flash frequency stabilization when increase, the high state of current precision meets
The requirement of automotive electronics application environment.
Limitation to scope of protection of the utility model, those skilled in the art should understand that, in the skill of the utility model
On the basis of art scheme, the various modifications or variations that can be made by those skilled in the art with little creative work still exists
Within the scope of protection of the utility model.
Claims (6)
1. using the dynamic steering circuit for lamp of boost function in a kind of LED module, it is characterised in that：It includes power input protection
Circuit, MPQ3367 integrated circuit modules, MCU integrated circuit modules and LED light string, in the MPQ3367 integrated circuit modules
Control the corresponding clock signal input foot SCL and order input pin SDA of chip TLU3 respectively in MCU integrated circuit modules
The corresponding signal pins connections of MCU chip TLU2, are triggered successively by the low and high level of the signal pins output of MCU chip TLU2
LED light string, every group of lamp string common-anode connection in LED light string, input pin corresponding with control chip TLU3 connects cathode respectively
It connects, control chip TLU3 is connect by failure feedback line with vehicle body computer BCM, and MCU chip TLU2 setting response datas 1/0 are timely
The clock period triggers and enables the dynamic response time that pin controls LED successively.
2. using the dynamic steering circuit for lamp of boost function in LED module according to claim 1, it is characterised in that：Institute
State power input protection circuit by P-MOS pipes S1, the first filter capacitor C1, diode TT2, transient voltage suppressor diode TD5,
5th to the tenth filter capacitor C5-C10, the 25th divider resistance TR25, the 26th divider resistance TR26 and voltage stabilizing chip
TLU1 is formed, and wherein P-MOS pipes S1 and the first filter capacitor C1 are protected as steering indicating light power input electric property and electromagnetic compatibility
Protection circuit, wherein diode TT2, transient voltage suppressor diode TD5, the 5th to the 8th filter capacitor C5-C8 and voltage stabilizing chip
5V power supply circuits of the TLU1 as MCU chip TLU2, wherein the 9th filter capacitor C9, the tenth filter capacitor C10, the 25th point
Piezoresistance TR25 and the 26th divider resistance TR26 protects circuit as MCU chip TLU2 power inputs.
3. using the dynamic steering circuit for lamp of boost function in LED module according to claim 1, it is characterised in that：Institute
It includes MCU chip TLU2 to state MCU integrated circuit modules, and the model PIC16F1824 of MCU chip TLU2, MCU chip TLU2 make
For low and high level trigger circuit.
4. using the dynamic steering circuit for lamp of boost function in LED module according to claim 1, it is characterised in that：Institute
State MPQ3367 integrated circuit modules by control chip TLU3, power inductance L1, Schottky diode D1, the first divider resistance R1,
Second divider resistance R2, third overvoltage protection resistance R3, the 4th overvoltage protection resistance R4, the 5th to the 7th detection resistance R5-R7,
Current sampling resistor R8, the second filter capacitor C2, third decoupling capacitor C3 and the 4th decoupling capacitor C4 compositions, wherein controlling chip
Switch pin SW, the power inductance L1 of TLU3 and Schottky diode D1 composition Boost topologies circuit, wherein control chip TLU3
Corresponding pin ISET and current sampling resistor R8 form current regulating circuit, wherein the partial pressure electricity of the first divider resistance R1 and second
It hinders R2 composition output open circuits and protects circuit.
5. using the dynamic steering circuit for lamp of boost function in LED module according to claim 1 or 4, it is characterised in that：
It includes three and the above LED that the MPQ3367 integrated circuit modules, which drive six groups of LED light strings, every group of LED light string, every group of electric current
It is up to 150mA.
6. using the dynamic steering circuit for lamp of boost function in LED module according to claim 1 or 4, it is characterised in that：
The model MPQ3367 of the control chip TLU3, the clock signal of control chip TLU3 individually control six by internal logic
The circulation action time between group LED light string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820221588.7U CN207854240U (en) | 2018-02-08 | 2018-02-08 | The dynamic steering circuit for lamp of boost function is used in a kind of LED module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820221588.7U CN207854240U (en) | 2018-02-08 | 2018-02-08 | The dynamic steering circuit for lamp of boost function is used in a kind of LED module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207854240U true CN207854240U (en) | 2018-09-11 |
Family
ID=63412164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820221588.7U Active CN207854240U (en) | 2018-02-08 | 2018-02-08 | The dynamic steering circuit for lamp of boost function is used in a kind of LED module |
Country Status (1)
| Country | Link |
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| CN (1) | CN207854240U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944653A (en) * | 2018-09-14 | 2018-12-07 | 常州瑞阳电装有限公司 | A kind of universe formula flasher driving circuit |
| CN110213853A (en) * | 2019-05-06 | 2019-09-06 | 北京汽车股份有限公司 | It turns to lamp control method and turns to lamp control circuit |
| CN113291231A (en) * | 2021-05-08 | 2021-08-24 | 东风柳州汽车有限公司 | Running water lamp control system |
| CN113382495A (en) * | 2021-05-10 | 2021-09-10 | 马瑞利汽车零部件(芜湖)有限公司 | Adjustable device for intelligently controlling lamplight |
| US11865968B2 (en) | 2020-09-16 | 2024-01-09 | Koito Manufacturing Co., Ltd. | Vehicle lamp and lamp control module |
-
2018
- 2018-02-08 CN CN201820221588.7U patent/CN207854240U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944653A (en) * | 2018-09-14 | 2018-12-07 | 常州瑞阳电装有限公司 | A kind of universe formula flasher driving circuit |
| CN108944653B (en) * | 2018-09-14 | 2024-05-14 | 常州瑞阳电装有限公司 | Global type flash drive circuit |
| CN110213853A (en) * | 2019-05-06 | 2019-09-06 | 北京汽车股份有限公司 | It turns to lamp control method and turns to lamp control circuit |
| CN110213853B (en) * | 2019-05-06 | 2021-12-24 | 北京汽车股份有限公司 | Steering lamp control method and steering lamp control circuit |
| US11865968B2 (en) | 2020-09-16 | 2024-01-09 | Koito Manufacturing Co., Ltd. | Vehicle lamp and lamp control module |
| CN113291231A (en) * | 2021-05-08 | 2021-08-24 | 东风柳州汽车有限公司 | Running water lamp control system |
| CN113291231B (en) * | 2021-05-08 | 2022-05-31 | 东风柳州汽车有限公司 | Running water lamp control system |
| CN113382495A (en) * | 2021-05-10 | 2021-09-10 | 马瑞利汽车零部件(芜湖)有限公司 | Adjustable device for intelligently controlling lamplight |
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