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CXA2530-0000-000N00T440F 데이터시트(PDF) 11 Page - Cree, Inc |
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CXA2530-0000-000N00T440F 데이터시트(HTML) 11 Page - Cree, Inc |
11 / 15 page 11 XLAMP CXA2530/CXA2540 RETAIL TRACK LIGHT REFERENCE DESIGN Copyright © 2013 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, the Cree logo and XLamp® are registered trademarks and EasyWhite™ is a trademark of Cree, Inc. For product specifications, please see the data sheets available at www.cree.com. For warranty information, please contact Cree Sales at sales@cree.com. Results Thermal Results we measured the thermal performance of the retail track light by attaching a thermocouple to the XLamp CXA2530 LeD mounted to the heat sink. The T SP of the CXA2530 retail track light was 63.5 °C. Based on the measured solder point temperature, the T J can be calculated as follows. T J = TSP + (LeD power * LeD thermal resistance) T J = 63.5 °C + (42 w * 0.8 °C/w) T J = 97 °C This thermal performance is in line with the thermal simulation. Estimated LED Lifetime Based on thousands of hours of long-term testing of the XLamp CXA2011 LeD at higher temperatures than the measured 63.5 °C T SP in this reference design, Cree expects an L70 lifetime for this retail track light significantly longer than the 50,000-hour goal. 39-w CmH lamps typically have lifetimes ranging from 10,000 to 12,000 hours, so the 4 to 5 times longer lifetime of the CXA2530 retail track light offers compelling maintenance cost savings. Optical and Electrical Results we obtained the results in Table 8 by testing the retail track light in a 1.5-meter sphere and a Type A goniometer after a 60-minute stabilization time.16 The performance meets or exceeds the project goals and accomplishes this using a single XLamp CXA2530 LeD to produce a symmetric 16° beam with CBCP exceeding 20,000 cd. Characteristic unit Result Light output lm 3211 Light intensity - CBCP cd 20,470 Beam angle - FWHM degrees 16 Luminaire efficacy lm/w 75.5 CCT K 3048 CrI 100-point scale 80 Power w 42.6 Power factor 0.95 Table 8: CXA2530 retail track light results We also tested the intensity distribution of the CXA2530 retail track light. As shown in Figure 6, the retail track light has an even intensity distribution for the narrow beam angle. 16 Testing was performed at Cree’s Shenzhen Technology Center. An IES file for the retail track light is available on the Cree website: www.cree.com/xlamp_app_notes/CXA2530_track_ies |
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