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Reference Design for Commercial Downlight with LED OS SSL AE LED Ch. Neureuther, Dr. A. Markytan.

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Presentation on theme: "Reference Design for Commercial Downlight with LED OS SSL AE LED Ch. Neureuther, Dr. A. Markytan."— Presentation transcript:

1 Reference Design for Commercial Downlight with LED OS SSL AE LED Ch. Neureuther, Dr. A. Markytan

2 Seite 2 7. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | Reference Designs 1. Introduction 2. Commercial Downlights 3. Construction & Optical parts of the luminaire 4. Part list & involved suppliers & LLFY-partners 5. Illuminance simulation of the luminaire 6. Measurement of the luminaire 7. Thermals Engineering 8. Electrical Engineering 9. Conclusions

3 Seite 3 7. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | Commercial Downlights

4 Seite 4 7. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | Commercial Downlights RocketLIGHT DiscLIGHT

5 Seite 5 7. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | Optical parts of Luminaire 1 2 LW W5KM JZ 7L Tc TYP = 5600 K 1 LED 71 lm x 37 = 2627 lm LCW W5AM-JXKX-4O9Q Tc TYP = 3500K 1 LED 63.5 lm x 37 = 2350 lm

6 Seite 6 7. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | Part list of Luminaire + involved suppliers & LLFY-partnersOSRAMOS Jungbecker Fischerelektronik Bergquist HofmannLeiterplaten Fraen

7 Seite 7 7. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | Illuminance simulation of Luminaire

8 Seite 8 7. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | L [cd/m2] 2500 mm f = 25 mm 3000 mm 2600 mm Luminaire Measurements on luminaire Rho = 0.9 Luminance distribution Lambertian wall

9 Seite 9 7. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | Measurement on luminaire L [cd/m2] Luminance on Reflector E[lx] Illuminance distribution Em = 1007 lx L*π ρ E= Ω ο Ω0Ω0

10 Seite Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | Measurement on luminaire Color distribution chromaticity coordinates x,y

11 Seite Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | Thermal Considerations and Results emissivity correction factor = 0.95 ambient temperature = 22°C Rth JS max = 11 K/W (GD+) Rth FR4 (Thermal Vias) = 9.7 K / W Measured: P_min = 350mA* 2.85V = 0.99 W P_max = 350mA* 3.2V = 1.12 W T_heatsink = 40 °C T_solderpoint = 45 °C Tj ~ 55°C ~ 0.94 dcx,dcy <

12 Seite Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | Thermal Engineering / Components Thermal Interface: PCB: FR4 with thermal vias: FISCHER Heatsinks: SK AL SK AL

13 Seite Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | Electrical Engineering - Luminaire Luminaire 37 x 1 W Golden DRAGON Argus 6 independent circuits Board Material: FR4 d = 0.8 mm Electric Layer (Cu) 35 µm Possible: µc (ATmega), PDs, NTC

14 Seite Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | Electrical Engineering - Ballast Ballast Supertex Driver HV9931LG & Design Use of 2 boards, each 80V 350 mA PWM dimmable Prototype status

15 Seite Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | Conclusions

16 Seite Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | Spotlight White- HexLIGHT: Diamond Dragon LCW W5AP-LZMZ-4L8N

17 Seite Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | Tasklight White – BridgeLIGHT: OSTAR Helios CW

18 Seite Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED | LEDs used Downlight White - DiscLIGHT: Golden DRAGON Plus (LCW W5AM) Downlight White – RocketLIGHT: Golden DRAGON ARGUS (LW W5KM) Spotlight White- HexLIGHT: Diamond DRAGON (LCW W5AP) Tasklight White – BridgeLIGHT: OSTAR SMT in warmwhite


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