reference design for commercial downlight with led os ssl ae led ch. neureuther, dr. a. markytan
TRANSCRIPT
Reference Design for Commercial Downlight with LED
OS SSL AE LED
Ch. Neureuther, Dr. A. Markytan
Seite 27. 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
Seite 37. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED |
Commercial Downlights
Seite 47. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED |
Commercial Downlights
RocketLIGHT DiscLIGHT
Seite 57. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED |
Optical parts of Luminaire
1
2
LW W5KM JZ 7LTc TYP = 5600 K
1 LED 71 lm x 37 = 2627 lm
LCW W5AM-JXKX-4O9QTc TYP = 3500K
1 LED 63.5 lm x 37 = 2350 lm
Seite 67. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED |
Part list of Luminaire + involved suppliers & LLFY-partners
OOSSRRAAMM OOSSJJuunnggbbeecckkeerr
FFiisscchheerreelleekkttrroonniikk
BBeerrggqquuiissttHHooffmmaannnnLLeeiitteerrppllaatteenn
FFrraaeenn
Seite 77. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED |
Illuminance simulation of Luminaire
Seite 87. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED |
all-1-Lall-1-xall-1-y
L(Pixel)1.3001.2501.2001.1501.1001.0501.000950900850800750700650600550500450400350300250200150100500
L(cd
/m²)
;x;y
280260240220200180160140120100806040200
L [cd/m2]
2500 mm
f = 25 mm
3000 mm
2600 mm
Luminaire
Measurements on luminaire
Rho = 0.9
Luminance distribution
Lambertian wall
Seite 97. 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*πρE=
Ωο
Ω0
Seite 107. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED |
Measurement on luminaire
all-1-xall-1-y
L(Pixel)1.3001.2501.2001.1501.1001.0501.000950900850800750700650600550500450400350300250200150100500
x;y
0,36
0,355
0,35
0,345
0,34
0,335
0,33
Color distribution
chromaticity coordinates x,y
Seite 117. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED |
Thermal Considerations and Resultsemissivity correction factor = 0.95ambient temperature = 22°CRth 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 °CT_solderpoint = 45 °C
Tj ~ 55°C Phiv@55°C/Phiv@25°C ~ 0.94 dcx,dcy < -0.003
Seite 127. 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 546 1000 ALSK 505 1000 AL
Seite 137. 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
Seite 147. 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
Seite 157. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED |
Conclusions
Seite 167. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED |
Spotlight White- HexLIGHT: Diamond Dragon LCW W5AP-LZMZ-4L8N
Seite 177. Lux et Color Veszpremiensis Szimposium | 2008 november 6 | OS SSL AE LED |
Tasklight White – BridgeLIGHT: OSTAR Helios CW
Seite 187. 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