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CXA2540-0000-000N00V430H Datasheet(PDF) 9 Page - Cree, Inc |
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CXA2540-0000-000N00V430H Datasheet(HTML) 9 Page - Cree, Inc |
9 / 15 page 9 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. 5. ConsiDER ALL DEsign possibiLiTiEs The design possibilities for an LeD-based track light are multitudinous. There are many ways to design the necessary heat sink that can dissipate the heat and fit within the desired envelope. One such heat sink is demonstrated in this reference design. There are also many ways to drive the LED and design the reflector and optics. Carefully selecting a driver and working with a reflector manufacturer to create an appropriate reflector provided the performance necessary for a true 39-w CmH-equivalent retail track light. There are a number of desirable performance-related benefits in this design, which are results of the XLamp CXA2530 LeD package. Because the CXA2530 LeD uses easywhite™ technology, LeD-to-LeD color consistency can be held to within two or four mcAdam ellipses for any given CCT, depending on the order code. The CXA2530 LeD is binned at 85 °C, so the CCT will be as faithful as possible to the system operating environment. These component features allow for new levels of specification accuracy. However, the primary purpose of this reference design is to show how simple and straightforward it is to design with Cree’s XLamp CXA2530 LeD. This application note is not intended to show the only way to do this, but instead demonstrate the ease of implementation with this set of engineering constraints. Certainly numerous other successful solutions are possible. Track light manufacturers typically design a reflector for a particular beam angle and install the light source and reflector in multiple housings. This reference design supports such a process and in addition, the performance range of the XLamp CXA2530 LED enables a wide variety of luminaires that all use a single CXA2530 LED. For demanding retail applications, the CXA2530 LeD is offered in a 90-minimum CrI option, providing even better color rendering than this reference design. CCTs from 2700 K to 5000 K and lumen output up to 5900 lm11 are possible, providing the flexibility to offer a variety of luminaires that use a single LED light source and reflector. This flexibility is enhanced by the XLamp CXA2540 LeD, which has the same physical dimensions and optical source size as the CXA2530 and offers even more design possibilities. 6. CompLETE ThE finAL sTEps This section describes the techniques used to create a working retail track light using the XLamp CXA2530 LeD and shows the results of the design. prototyping Details The essence of the design is to attach a Cree XLamp CXA2530 LeD to a heat sink and assemble the necessary optics and driver around this to create a true 39-w CmH-equivalent LeD luminaire. The assembly steps are detailed below. 11 At 61 w, 85 °C |
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