LEDLIGHTING

Solar Powered LED Signals

Solar powered LED signals have the capability of getting power from sunlight, which makes them suited for the signals in the places where power lines are not available but traffic condition need to be controlled.

Solar powered signals have solar panel installed in their power supply systems and store the unused power in batteries as the backup power supply. These LED signals usually include high brightness LEDs of three individual colors - red, yellow and green.

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The LEDs are all under the control of MCUs which give switching instructions to LED drivers according to the preset programs; hence the LED signals can work properly. With RS-485 port, the MCU can also receive controlling information from traffic signals control box or the information sent by GPRS modules in the control network. In addition, the MCU is able to monitor the working state of solar cells and lead-acid batteries, and determine if abnormal conditions occur and adjustment is required.

Solar powered LED signals utilize sunlight as their power source, eliminating the need for traditional power supply and thus reducing environment pollution. Employing these signal lights in a large scale can effectively save power and contribute to the solution for power crisis concerning the world.

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Hover over the diagram blocks to view recommended products for this solution:

Solar Energy Collecting Device

SR20-36
SR20-36
RALOSS
BP-350U
BP-350U
SOLAREX
MC-SP50-GCS
MC-SP50-GCS
MULTICOMP
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Control Center in This System

ATMEGA
ATMEGA
ATMEL
XLP low power
XLP low power
MICROCHIP
GS dsPICs
GS dsPICs
MICROCHIP
TEXAS INSTRUMENTS
MSP430
TEXAS INSTRUMENTS
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Constant Current Controller for Driving High Brightness LEDs

Microchip power management
Microchip
power
management
MICROCHIP
LT3519EMS-1#PBF
LT3519EMS-1#PBF
LINEAR TECHNOLOGY
LM3464MH/NOPB
LM3464MH/NOPB
NATIONAL SEMICONDUCTOR
TLC5929PWP
TLC5929PWP
TEXAS INSTRUMENTS
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High Brightness LEDs
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RS-485 interface
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Isolate the Power and Signal
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Energy Storage Device
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AC164133  - Buck/Boost Converter PICtail PlusAC164133 - Buck/Boost Converter PICtail Plus
Microchip
The Buck/Boost Converter PICtail™ Plus Daughter Board provides an easy and economical way to evaluate Switch Mode Power Supply applications with the dsPIC33F GS Digital Power Conversion family.
LED Lighting Development KitDM330014 - LED Lighting Development Kit
Microchip
Microchip's Digital LED Lighting Development Kit enables designers to quickly leverage the capabilities and performances of the dsPIC33F GS series of Digital Signal Controllers (DSCs) to develop LED-lighting products.
MCP1630 Boost Mode LED Driver Demo BoardMCP1630 Boost Mode LED Driver Demo Board
Microchip
The MCP1630 Boost Mode LED Driver Demo Board is a step-up, switch-mode, DC-DC converter used for power LED applications.
MCP1650 Multiple White LED Demo BoardMCP1650 Multiple White LED Demo Board
Microchip
The MCP1650 Multiple White LED Demo Board uses the MCP1650 IC to power the nine white LEDs which are connected in series.
TMDSDCDCLEDKIT - DC-DC LED Developer's KitTMDSDCDCLEDKIT - DC-DC LED Developer's Kit
Texas Instruments
The kit is based on the Piccolo MCU and the controlCARD platform. One Piccolo MCU is able to directly control eight separate DC/DC power stages as well as up to eight LED strings of various LED types and string lengths.
ImageDescription 
MicrochipMCUBuck Boost LED Driver using PIC16F785AN1047 Apps Note PIC16F785Click here
MicrochipMCUnanoWatt & nanoWatt XLP(TM) Technologies: An Introduction to Microchip's Low Power devicesAN1267 Apps Note Click here
MicrochipMosfet Driver Matching MOSFET Drivers to MOSFETsAN799 Apps Note Click here
MicrochipMCUHigh Power LED Flashlight Demonstration – Advanced Control and Increased EfficacySchematicsClick here
NXPMCUEEPROM Emulation Using FLASH in MC68HC908QY/QT MCUs AN2346 MC68HC908Click here
NXPMCUInitial Trimming of the MC68HC908 ICG AN2498
MC68HC908Click here
NXPMCULow-Cost Programming and Debugging Options for M68HC08 MCUs AN2317 MC68HC908Click here
NXPMCUUsing M68HC908 ROM-Resident Routines AN2874 MC68HC908Click here
NXPMCUUsing MC68HC908 On-Chip FLASH Programming Routines AN1831MC68HC908Click here
MICROCHIPBattery Charger16HV785: Programmable Lead Acid Battery Charger AN101516HV785Click here
MICROCHIPBattery ChargerAN960-New Components and Design Methods Bring Intelligence to Battery Charger ManagementAN960 Click here
NATIONAL SEMICONDUCTORBuck LED DriverApplication Note 1629 Thermal Performance of the LM3404/04HV in SO-8 and PSOP-8 PackagesAN-1629LM3404HVClick here
NATIONAL SEMICONDUCTORBuck LED DriverApplication Note 1764 LM3431 Evaluation BoardAN-1764LM3431Click here
NATIONAL SEMICONDUCTORBuck LED DriverApplication Note 1839 LM3402/LM3404 Fast Dimming and True Constant LED Current Evaluation BoardAN-1839LM3404Click here
NATIONAL SEMICONDUCTORBuck LED DriverApplication Note 1853 COT Drivers Control LED Ripple CurrentAN-1853LM3404Click here
NATIONAL SEMICONDUCTORBuck LED DriverApplication Note 1872 LM3423 Boost Evaluation BoardAN-1872LM3423Click here
NATIONAL SEMICONDUCTORBuck LED DriverApplication Note 1907 LM3423 Buck-Boost Configuration Evaluation BoardAN-1907LM3423Click here
NATIONAL SEMICONDUCTORBuck LED DriverApplication Note 1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs CoolAN-1982LM3404Click here
ON SEMICONDUCTOR LED DriverUsing the NUD4001 to Drive High Current LEDsAND8198/DNUD4001Click here
ON SEMICONDUCTOR LED DriverNUD4001 and NUD4011 Current Sources for LEDs Lighting ApplicationsAND8156/DNUD4001Click here
ON SEMICONDUCTOR LED DriverNUD4001 LED Driver Demonstration BoardsAND8197/DNUD4001Click here
ON SEMICONDUCTOR LED DriverUsing the NUD4001 to Drive High Current LEDsAND8198/D NUD4001Click here
ManufacturerProduct TypeAN TitleAN NumberPart NumberURL
NATIONAL SEMICONDUCTOR LEDMatching Driver to LEDClick here
ManufacturerProduct TypeWhite Paper TitleURL
ManufacturerProduct TypeEvaluation Kits TitleEVKs Part NumberPart NumberURL
TEXAS INSTRUMENTS DC-DC TI LED Lighting Power Solutions OverviewClick here
TEXAS INSTRUMENTS Battery ChargerBattery charging, gauging and protectionClick here
CreeHP LEDXLamp® Color LEDs Click here
ManufacturerProduct TypeTraining TitlePart NumberURL