Lighting Solutions - MR16 LED Lamp Solution

Lighting Solutions - MR16 LED Lamp Solution

MR16 (Multi-face Reflect 16, indicates the diameter of the lamp opening [50mm]) lamps are widely used in the applications such as shop and decorative lighting. The potential for applications of traditional halogen MR16 lamps are limited by their high power consumption, low efficiency, high heat generation, as well as the shortcoming that the filament can be easily damaged by mishandling or vibration. As a substitute technology for low voltage halogen lamps, LEDs are gaining widespread popularity because of many advantages that halogen lamps lack, including power efficiency, environment friendly, safety, long life and shock resistance.

The following sections will introduce two solutions for LED MR16 lamps.

Solution 1: the substitute solution for traditional halogen lamps. This solution integrates LED driver circuit and LED lighting source into a LED module to replace halogen lamp bulb. The LED driver circuit comprises rectification and filter circuits, LED driver chip with MOSFET, power inductor, current sensing resistors (Rs) and Schottky diodes. Because traditional halogen lamps run off a 12V AC power supply, a rectifier and a filter should be added before driver circuit to convert the 12V AC output of the transformer to stable DC voltage. The DC voltage can then be connected to LED driver circuit to provide a constant current for LEDs.

Solution 2: the LED lamp driven by isolated mains power. This solution features safety, high efficiency, and supports voltage of 90V - 264V AC without the need of traditional transformer. The mains power is rectified, and then stepped down by a DC-DC converter circuit into the required output current and voltage. The output current is controlled by a CC controller (Constant Current controller) working on the basis of primary-side feedback or secondary feedback.

Generally, a 1W, or 3W, or 5W single LED or 3×1W high-Power LEDs connected in series can be selected as the lighting source for replacement of MR16. These LEDs can be single color or multi-color based on application requirements. Nowadays, the well-known manufacturers like Cree, Avago, LumiLEDs, and OSRAM are providing LEDs for MR16.

High-power LEDs will generate a large amount of heat while emitting light. Overheat leads to faster luminous decay, and even fatal damages to LEDs. Therefore a good thermal dissipation system becomes a guarantee that LEDs work properly. Today most LEDs are mounted on the surface of MCPCBs which transfer heat to aluminum crusts for thermal dissipation. Currently, manufacturers such as Aavid Thermalloy, Cooliance, Advanced Thermal Solutions, and Bergquist are providing thermal management solutions

 

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APPLICATION NOTES

CREELEDCree® XLamp® LEDs for Distributed Illumination ApplicationsCree® XLamp® familyClick Here
CREELEDPulsed Over-Current Driving of XLamp LEDs: Information and CautionsCree® XLamp® familyClick Here
CREELEDOptimizing PCB Thermal Performance for Cree® XLamp® LEDCree® XP- LED familyClick Here
CREELEDLED Eye SafetyCree® XLamp® familyClick Here
CREELEDRelability of High Power LEDsCree® XP- LED familyClick Here
CREELEDCree® Product Ecology – LED ComponentsCree® XLamp® familyClick Here
NATIONAL SEMICONDUCTOR LED DriverLM3401MM/NOPBLM3401MM/NOPB MR16 Reference Designs for Non-Dimming & Dimming LED Applications LM3401MM/NOPBLM3401MM/NOPBClick Here
NATIONAL SEMICONDUCTOR LED DriverMR16 and PAR38 LED Bulb Reference Design Using National`s LM3429LM3429 LED Driver and the Nuventix SynJet® Coolers LM3429LM3429Click Here
NATIONAL SEMICONDUCTOR LED DriverLED Drivers for High-Brightness LightingLM3400 Series LED DriverClick Here
ON SEMICONDUCTOR LED DriverNUD4001NUD4001 LED Driver Demonstration BoardsAND8197/DNUD4001NUD4001Click Here
ON SEMICONDUCTOR LED DriverNCP3065NCP3065: SEPIC LED Driver for MR16 DN06033/DNCP3065NCP3065Click Here
ON SEMICONDUCTOR LED Driver1 W to 5 W MR16 LED Driver GreenPoint® Reference Design TND373/DNCP3065NCP3065Click Here
ON SEMICONDUCTOR LED DriverCAT4201TD-GT3CAT4201TD-GT3: Three LED 300 mA MR16 Driver DN06067/DCAT4201TD-GT3CAT4201TD-GT3Click Here
ON SEMICONDUCTOR LED DriverNCP3065NCP3065: 12Vac or 12Vdc MR-16 Sharp ZENIGATA LED Module DN06048/DNCP3065NCP3065Click Here
TEXAS INSTRUMENTS LED DriverMR16 LED Lighting Driver (1.1A@5.7V) Reference Design PMP6004TPS54260DGQTPS54260DGQClick Here
TEXAS INSTRUMENTS LED DriverTPS40211TPS40211 - SEPIC Design for MR-16 LEDTPS40211TPS40211Click Here
ManufacturerProduct TypeAN TitleAN NumberPart NumberURL

 

WHITED PAPERS

AVAGO TECHNOLOGIESLEDThermal Modeling for Application of High Power LED Click Here
NATIONAL SEMICONDUCTOR LEDMatching Driver to LEDClick Here
CREELEDLED Lighting: More energy-efficient than CFL?Click Here
CREELEDCree Binonator Tool for Chromaticity and Flux MixingClick Here
ManufacturerProduct Type White Paper Title URL

 

EVALUATION KITS

ManufacturerProduct TypeEvaluation Kits TitleEVKs Part NumberPart NumberURL
NATIONAL SEMICONDUCTOR LED DriverLM3429LM3429 Buck-Boost Evaluation BoardLM3429BKBSTEVAL/NOPBLM3429BKBSTEVAL/NOPBLM3429LM3429Click Here
ON SEMICONDUCTOR PWM ControllerNCP1013LEDGEVB:5W Universal LED Driver NCP1013LEDGEVBNCP1013Click Here
ON SEMICONDUCTOR PWM ControllerNCP1014LEDGTGEVB:90-305VAC .8PF 8W LED DRV NCP1014LEDGTGEVBNCP1014STBUCGEVBNCP1014STBUCGEVBClick Here
ON SEMICONDUCTOR LED DriverNUD4001NUD4001 Evaluation BoardNUD4001DEVBNUD4001DEVB NUD4001NUD4001Click Here
ON SEMICONDUCTOR LED DriverNCP3065NCP3065 BUCK-BOOST MR16 NCP3065BBGEVB NCP3065NCP3065Click Here
ON SEMICONDUCTOR LED DriverSEPIC LED DRV MR16BULB NCP3065D1SLDGEVBNCP3065D1SLDGEVB NCP3065NCP3065Click Here
ManufacturerProduct TypeEvaluation Kits TitleEVKs Part NumberPart NumberURL

 

TRAINING

 

NATIONAL SEMICONDUCTOR LED DriverWEBENCH® LED Designer & Architect WebinarClick Here
NATIONAL SEMICONDUCTOR LED DriverWEBENCH® LED Architect Software Guided TourClick Here
NATIONAL SEMICONDUCTOR LED DriverDesigning LED Driver Circuits Using WEBENCH LED DesignerClick Here
NATIONAL SEMICONDUCTOR LED DriverWhat's New in PowerLM3429LM3429Click Here
ManufacturerProduct TypeTraining TitlePart NumberURL