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Reference Designs

Reference Design for Commercial Downlight with LED OS SSL AE LED Ch. Neureuther, Dr. A. Markytan. Reference Designs. 1. Introduction 2. Commercial Downlights 3. Construction & Optical parts of the luminaire 4. Part list & involved suppliers & LLFY-partners

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Reference Designs

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  1. Reference Design for Commercial Downlight with LEDOS SSL AE LEDCh. Neureuther, Dr. A. Markytan

  2. 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. Commercial Downlights

  4. Commercial Downlights • RocketLIGHT DiscLIGHT

  5. 1 2 Optical parts of Luminaire • LCW W5AM-JXKX-4O9Q • Tc TYP = 3500K • 1 LED 63.5 lm x 37 = 2350 lm LW W5KM JZ 7L Tc TYP = 5600 K 1 LED 71 lm x 37 = 2627 lm

  6. J u n g b e c k e r F r a e n O S R A M O S H o f m a n n B e r g q u i s t F i s c h e r e l e k t r o n i k L e i t e r p l a t e n Part list of Luminaire + involved suppliers & LLFY-partners

  7. Illuminance simulation of Luminaire

  8. Measurements on luminaire L [cd/m2] Rho = 0.9 3000 mm f = 25 mm 2600 mm Luminaire Lambertian wall 2500 mm Luminance distribution

  9. Ω0 L * π E = ρ Ω ο Measurement on luminaire E[lx] Luminance on Reflector Em = 1007 lx L [cd/m2] Illuminance distribution

  10. Measurement on luminaire Color distribution chromaticity coordinates x,y

  11. 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 Phiv@55°C/Phiv@25°C ~ 0.94 dcx,dcy < -0.003

  12. Thermal Engineering / Components • FISCHER Heatsinks: • SK 546 1000 AL • SK 505 1000 AL • Thermal Interface: • PCB: FR4 with thermal vias:

  13. 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. Electrical Engineering - Ballast • Ballast • Supertex Driver HV9931LG & Design • Use of 2 boards, each 80V 350 mA PWM dimmable • Prototype status

  15. Conclusions

  16. Spotlight White- HexLIGHT: Diamond Dragon LCW W5AP-LZMZ-4L8N

  17. Tasklight White – BridgeLIGHT: OSTAR Helios CW

  18. 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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