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Lighting Solutions - RGB LED Color Mixing

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Created on: Feb 2, 2011 5:07 PM by Kcourtneynewark - Last Modified:  Apr 2, 2011 7:45 PM by Kcourtneynewark

Lighting Solutions - RGB LED Color Mixing

A single LED die can only emit monochromatic light which could be one of the three primary colors - red, green and blue, known as RGB. To realize more colors, three LED dies need to be used together for RGB color mixing. Commonly 7 colors can be produced by controlling the switch of the channel for each primary color. To produce more than 7 colors, each color channel should be able to change in brightness, not just switched on or off. A popular control method is PWM, of which the cycle duty range determines the available brightness levels. The more the levels are available, the more colors can be produced. Apart from the popularity in applications like outdoor decoration lighting in cities, stage lighting designs, home decoration lighting and LED display matrix, RGB color mixing technology can also be found recently in LCD backlighting and projectors.

   To implement different patterns of RGB color mixing, each LED die needs a dedicated signal for dimming. One method is using a single driver that has three or more channels and is capable of controlling each channel separately for dimming. The other is using three drivers to provide power and implement dimming function respectively on three channels. Obviously, the former method uses fewer drivers and is suitable for the applications such as backlighting and display matrix that work on lower current and a large number of LEDs. The latter one can be used in high power applications such as decoration lighting.

In addition, a MCU is required to drive LED driver to carry out dimming function and store color configurations of LEDs. For those applications that require more accurate color mixing, color and temperature sensors should be used to monitor the mixed color output and provide feedback.

LEDs used in RGB color mixing are normally high brightness ones. The main suppliers include Avago, Cree, Lumex and Vishay. RGB LED driver are available from National Semiconductor, Maxim, ON semiconductor and TI.

RGB LED Colour Mixing.jpg

APPLICATIONS

ATMELMCUReplacing AT90S2313 by ATtiny2313AVR092ATTINY2313Click here
AVAGOLEDSoldering and Handling of High BrightnessAN5334Click here
AVAGOcolour SensorUse colour sensors
for precise measurement		ADJD-S313-QR999Click here
AVAGOcolour SensorADJD-S311-CR999/ ADJD-S371-QR999AN5330ADJD-S311-CR999Click here
CREELEDLED Lamp PackagingP4LEDClick here
CREELEDLED Lamp Reliability Test_StandardP4LEDClick here
CREELEDLED Lamp Soldering & HandlingP4LEDClick here
CYPRESSLED ControllerImplementing DALI Receiver using EZ-colour(TM) Intelligent Lighting ControllersClick here
CYPRESSLED ControllerWhite Light and colour Mixing: A Single ApproachClick here
DIODES INC.Buck LED Driver12Vac LED Driving without smoothing capacitorsAN56ZXLD1360ET5TAClick here
DIODES INC.Buck LED DriverCommon anode topology with Zetex hysteretic convertersAN64ZXLD1360ET5TAClick here
DIODES INC.Buck LED DriverGetting more out of the ZXLD1350ET5 - dimming techniquesAN47ZXLD1350ET5Click here
DIODES INC.Buck LED DriverGetting more out of the ZXLD1350ET5 - high output currentAN48ZXLD1350ET5Click here
FREESCALE SEMIMCUEEPROM Emulation Using FLASH in MC68HC908QY/QT MCUsAN2346MC68HC908Click here
FREESCALE SEMIMCUGenerating Clocks for HC908 MCU FamiliesAN2508MC68HC908Click here
FREESCALE SEMIMCUInitial Trimming of the MC68HC908 ICGAN2498 MC68HC908Click here
FREESCALE SEMIMCULow-Cost Programming and Debugging Options for M68HC08 MCUsAN2317MC68HC908Click here
FREESCALE SEMIMCUMC68HC908EY16 ESCI LIN 1.3 DriversAN2575MC68HC908Click here
FREESCALE SEMIMCUSlave LIN Driver for the MC68HC908QT/QY FamilyAN2503MC68HC908Click here
IRLED DriverSimple, Efficient, High-Brightness-LED ControlClick here
LINEAR TECHNOLOGY LED DriverTriple LED Driver in 4mm × 5mm QFN Supports LCD Backlights in Buck, Boost or Buck-Boost Modes and Delivers 3000:1 PWM Dimming RatioDN449LT3496Click here
MICROCHIPMCUAn I2C Network Protocol for Environmental MonitoringAN736PIC16CClick here
MICROCHIPMCUUsing the PICmicro MSSP Module for Master I2C Communications PIC16CClick here
NATIONAL SEMILED DriverDesigning a Boost LED Driver Using the LM5022MM/NOPBAN166LM5022MM/NOPBClick here
NATIONAL SEMIBuck LED DriverApplication Note 1192 Overture™ Series High Power SolutionsAN-1192LM3405Click here
NATIONAL SEMIBuck LED DriverApplication Note 1500 LM3402/02HV Demo BoardAN-1500LM3405Click here
NATIONAL SEMIBuck LED DriverApplication Note 1529 LM3430SD/NOPB Evaluation BoardAN-1529LM3430SD/NOPBClick here
NATIONAL SEMIBuck LED DriverApplication Note 1545 LM3404/LM3404HV Evaluation BoardAN-1545LM3405Click here
NATIONAL SEMIBuck LED DriverApplication Note 1585 LM3402 and LM3404 High Power PSOP-8 Evaluation BoardAN-1585LM3405Click here
NATIONAL SEMIBuck LED DriverApplication Note 1590 LM3405 Demo BoardAN-1590LM3405AClick here
NATIONAL SEMIBuck LED DriverApplication Note 1629 Thermal Performance of the LM3404/04HV in SO-8 and PSOP-8 PackagesAN-1629LM3404HVClick here
NATIONAL SEMIBuck LED DriverApplication Note 1644 Powering and Dimming High-Brightness LEDs with the LM3405 Constant-Current Buck RegulatorAN-1644LM3405AClick here
NATIONAL SEMIBuck LED DriverApplication Note 1657 LM3401MM/NOPB Demo BoardAN-1657LM3405Click here
NATIONAL SEMIBuck LED DriverApplication Note 1685 LM3405A Demo BoardAN-1685LM3405AClick here
NATIONAL SEMIBuck LED DriverApplication Note 1750 LM3406 Evaluation BoardAN-1750LM3406Click here
NATIONAL SEMIBuck LED DriverApplication Note 1764 LM3431 Evaluation BoardAN-1764LM3431Click here
NATIONAL SEMIBuck LED DriverApplication Note 1839 LM3402/LM3404 Fast Dimming and True Constant LED Current Evaluation BoardAN-1839LM3404Click here
NATIONAL SEMIBuck LED DriverApplication Note 1853 COT Drivers Control LED Ripple CurrentAN-1853LM3404Click here
NATIONAL SEMIBuck LED DriverApplication Note 1872 LM3423 Boost Evaluation BoardAN-1872LM3423Click here
NATIONAL SEMIBuck LED DriverApplication Note 1899 LM3405A eMSOP Evaluation BoardAN-1899LM3405AClick here
NATIONAL SEMIBuck LED DriverApplication Note 1907 LM3423 Buck-Boost Configuration Evaluation BoardAN-1907LM3423Click here
NATIONAL SEMIBuck LED DriverApplication Note 1954 LM3409 Demonstration BoardAN-1954LM3405Click here
NATIONAL SEMIBuck LED DriverApplication Note 1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs CoolAN-1982LM3404Click here
NATIONAL SEMILED DriverLM2755TM/NOPB Charge Pump LED Controller with I2C Conpatible Interface in uSMDAN1778LM2755TM/NOPBClick here
NATIONAL SEMIBoostLM3410X LED Driver 5-Pin SOT-23 Demo BoardAN-1773LM3410XClick here
NATIONAL SEMIBoostLM3410X LED Driver 6-Pin LLP Demo BoardAN-1774LM3410XClick here
NATIONAL SEMILED DriverDesign and Programming Examples for Lighting Management Unit LP5526TL/NOPBAN-1422LP5526TL/NOPBClick here
NXPLED Drivercolour-mixing RGB LED drivers for mobile,
entertainment, and architectural lighting		PCA963XClick here
ON SEMICONDUCTORPowerUsing the NUD4001 to Drive High Current LEDsAND8198/DNUD4001Click here
ON SEMICONDUCTORLED DriverImproving the Power Factor of Isolated Flyback Converters for Residential ENERGY STAR® LED Luminaire Power SuppliesDN06051Click here
ON SEMICONDUCTORLED DriverUniversal Input, 5 W, LED BallastDN06027Click here
ON SEMICONDUCTORPowerNUD4001 and NUD4011DR2G Current Sources for LEDs Lighting ApplicationsAND8156/DNUD4001Click here
ON SEMICONDUCTORPowerNUD4001 Dimming Ability Demonstration BoardAND8234/DNUD4001Click here
ON SEMICONDUCTORPowerNUD4001 LED Driver Demonstration BoardsAND8197/DNUD4001Click here
ON SEMICONDUCTORBoostUnderstanding the Noise Issue Out of Inductor Based DC-DC ConverterAND8172/DNCP5007Click here
ON SEMICONDUCTORLinearUsing the NUD4001 to Drive High Current LEDsAND8198/DNUD4001Click here
PHILIPSLEDEffective Thermal Management of Bridgelux LED Arrays Application Note AN10Click here
PHILIPSLEDHandling and Assembly of Bridgelux LED Arrays Application Note AN11Click here
PHILIPSLEDElectrical Drive Considerations for Bridgelux LED Arrays Application Note AN12Click here
PHILIPSLEDReliability Data Sheet for Bridgelux LED Arrays Application Note AN14Click here
PHILIPSLEDReflow Soldering of Bridgelux LED Arrays Application Note AN15Click here
PHILIPSLEDOptical Considerations for Bridgelux LED ArraysApplication Note AN16Click here
STMICROELECTRONICSMCUSTM8L family power managementAN3147STM8 SeriesClick here
STMICROELECTRONICSMCUSTM8 in-application programming (IAP) using a customized user-bootloaderAN2659STM8 SeriesClick here
STMICROELECTRONICSMCUImplementing a simple ADC using the STM8L101xx comparatorAN2979STM8 SeriesClick here
STMICROELECTRONICSMCUGuidelines to increase the number of touchkeys with the STM8 Touch Sensing LibraryAN3236STM8 SeriesClick here
STMICROELECTRONICSMCUGetting started with STM8LAN3029STM8 SeriesClick here
STMICROELECTRONICSMCUEMC guidelines for STM8 microcontrollersAN2860STM8 SeriesClick here
STMICROELECTRONICSMCUA/D converter on STM8L devices: description and precision improvement techniquesAN3137STM8 SeriesClick here
TEXAS INSTRUMENTSBoostExtending Battery Life With the TPS61040 Low Power DC-DC Boost ConverterSlva247TPS61040Click here
TEXAS INSTRUMENTSBoostExtending Soft Start Time in TPS6107x Family of BoostSlva307TPS6107xClick here
TEXAS INSTRUMENTSBoostImproved Overvoltage Protection for the TPS61040/1Slva227TPS61040/1Click here
TEXAS INSTRUMENTSBoostMinimizing Ringing at the Switch Node of a Boost ConverterSlva255TPS61059 Click here
TEXAS INSTRUMENTSBoostAnalog Dimming With the TPS61500PWP Using an Analog Input SignalSlva326TPS61500PWPClick here
TT ELECTRONICSLEDThermal Management of Visible LEDsApplication Bulletin 228Click here
ManufacturerProduct TypeAN TitleAN NumberPart NumberURL

 

WHITE PAPERS

AVAGOLED Drivercolour Management of a Red, Green and Blue LED Combinational Light SourceClick here
AVAGOLED DriverReflective colour Sensing with Avago Technologies’ RGB colour SensorClick here
AVAGOLED DriverThermal Modeling for Application of High Power LEDClick here
NATIONAL SEMILEDMatching Driver to LEDClick here
PHILIPSLEDEvaluating the Lifetime Behavior of LED SystemsClick here
ManufacturerProduct Type White Paper Title URL

 

EVALUATION KITS

LINEAR TECHNOLOGY Buck-BoostLTC3454EDD#PBF Evaluation Kit Quick Start GuideLTC3454EDD#PBFLTC3454EDD#PBFClick here
LINEAR TECHNOLOGY Buck LED DriverLT3474EFE#PBF Evaluation KitDC842ALT3474EFE#PBFClick here
LINEAR TECHNOLOGY LED DriverLT3476EUHF#PBF Quadruple High Power LED Driver in Buck ModeLM3402-04LT3476EUHF#PBFClick here
LINEAR TECHNOLOGY LED DriverDC1482A - LT3519EMS Evaluation KitDC1482ALT3519Click here
LINEAR TECHNOLOGY LED DriverLTM8040EV#PBF Demo Board | 36V, 1A Buck LED DriverDC1274ALTM8040EV#PBFClick here
NATIONAL SEMIStep-Down DC-DC RegulatorLM2734 Evaluation BoardLM2734Click here
NATIONAL SEMILED DriverLM3401/LM3404 Fast Dimming and True Constant LED Current Evaluation BoardLM3402-04LM3404Click here
NATIONAL SEMILED DriverLM3404/LM3404HV Evaluation BoardLM3404EVAL/NOPBLM3404Click here
NATIONAL SEMILED DriverLM3405A eMSOP Evaluation BoardLM3405AEVALLM3405Click here
NATIONAL SEMIBoostLM3410X LED Driver 5-Pin SOT-23 Demo BoardLM3410XClick here
NATIONAL SEMIBoostLM3410X LED Driver 6-Pin LLP Demo BoardLM3410XClick here
NATIONAL SEMIDC-DC converterLM5027AMH/NOPB Evaluation BoardLM5027A-EVALLM5027AMH/NOPBClick here
NATIONAL SEMILED DriverLM3424 Boost Evaluation BoardLM3424BKBSTEVAL/NOPBLM3424Click here
NATIONAL SEMILED DriverLM3410X 190mA, LED Driver 6-Pin LLP Evaluation BoardLM3410XClick here
NATIONAL SEMILED DriverDesign and Programming Examples for Lighting Management Unit LP5526TL/NOPBLP5526TL/NOPBClick here
ON SEMIStep-Up DC-DC converterNCP1421 High Current LED Driver Evaluation BoardNCP1421LEDEVBNCP1421Click here
TEXAS INSTRUMENTSLED DriverTPS62260LED-338 Three-colour LED Driver Evaluation Module (EVM)TPS62260LED-338TPS62260Click here
TEXAS INSTRUMENTSLED DriverTLC59116EVM-390 User's GuideTLC59116EVM-390TLC59116IPWRClick here
TEXAS INSTRUMENTSBoostTPS61040EVM-002 White Light LED Bias Supply EVMTPS61040EVM-002TPS61040Click here
TEXAS INSTRUMENTSBoostTPS61054EVM-273TPS61054EVM-273TPS61054DRCTClick here
TEXAS INSTRUMENTSBoostTPS61054EVM-350TPS61054EVM-350TPS61054DRCTClick here
TEXAS INSTRUMENTSBoostTPS61059EVM-141TPS61059EVM-141TPS61059Click here
TEXAS INSTRUMENTSBoostTPS61500EVM-369 User's GuideTPS61500EVM-369TPS61500PWPClick here
ManufacturerProduct TypeEvaluation Kits TitleEVKs Part NumberPart NumberURL


TRAINING

LINEAR TECHNOLOGYLED DriverLT3518 Full-Featured 45V, 2.3A Switch Current LED DriverLT3518Click here
LINEAR TECHNOLOGYLED DriverLT3756-2 100V Input, 100V Output Multi-Topology LED Driver ControllerLT3756Click here
LINEAR TECHNOLOGYLED DriverHigh Current LED Driver with Three-State ControlLT3743Click here
NATIONAL SEMILED DriverLED Bulb Replacement Using National LED Drivers & Nuventix SynJet® Coolers on PowerWise Design TVClick here
NATIONAL SEMILED DriverLED Driver Design for General IlluminationClick here
NATIONAL SEMILED DriverLM3409 High-Brighness LED 1000:1 Dimming DemoClick here
NATIONAL SEMIBuck-BoostLM3445 TRIAC Dimmable LED Driver LIGHTFAIR DemoLM3445Click here
NATIONAL SEMIBuckLM3409 High-Brighness LED 1000:1 Dimming DemoLM3409Click here
NATIONAL SEMIBuckLED Driver Design for General IlluminationLM3401MM/NOPBClick here
NATIONAL SEMIBuckWEBENCH LED Designer -- LED Driver Design in MinutesLM3402Click here
NATIONAL SEMIBuckLM8502 Smart Lighting Controller DemoLM8502Click here
NATIONAL SEMILEDWEBENCH® LED Designer & Architect WebinarClick here
NATIONAL SEMILEDWEBENCH® LED Architect Software Guided TourClick here
NATIONAL SEMILEDDesigning LED Driver Circuits Using WEBENCH LED DesignerClick here
NATIONAL SEMILED DriverLM3424 Thermal Foldback - Easy Thermal Control for LED LightingLM3424Click here
NATIONAL SEMILED DriverLM3464MH/NOPB - Accurately Drive Multiple Strings with Just One LED DriverLM3464MH/NOPBClick here
NATIONAL SEMILED DriverAn Introduction to High Brightness LED Applications and Driving TechniquesClick here
NATIONAL SEMILED DriverLED Lighting CourseClick here
NATIONAL SEMILED DriverMatching Driver to LEDClick here
TEXAS INSTRUMENTSLED DriverTPS62260LED-338: colour Lighting Innovations with a New LED BoardClick here
TEXAS INSTRUMENTSDC-DCTI LED Lighting Power Solutions OverviewClick here
ManufacturerProduct TypeTraining TitlePart NumberURL

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