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CXA2540-0000-000N00W240F Arkusz danych(PDF) 2 Page - Cree, Inc |
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CXA2540-0000-000N00W240F Arkusz danych(HTML) 2 Page - Cree, Inc |
2 / 15 page 2 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. The appendix to this reference design shows the results obtained when an XLamp CXA2540 LeD was used in place of the CXA2530 LeD. DEsign AppRoACh/objECTivEs In the “LeD Luminaire Design Guide” application note, Cree advocates a 6-step framework for creating LeD luminaires.1 All Cree reference designs use this framework, and the design guide’s summary table is reproduced below. step Explanation 1. Define lighting requirements • The design goals can be based either on an existing fixture or on the application’s lighting requirements. 2. Define design goals • Specify design goals, which will be based on the application’s lighting requirements. • Specify any other goals that will influence the design, such as special optical or environmental requirements. 3. Estimate efficiencies of the optical, thermal & electrical systems • Design goals will place constraints on the optical, thermal and electrical systems. • Good estimations of efficiencies of each system can be made based on these constraints. • The combination of lighting goals and system efficiencies will drive the number of LEDs needed in the luminaire. 4. Calculate the number of LeDs needed • Based on the design goals and estimated losses, the designer can calculate the number of LeDs to meet the design goals. 5. Consider all design possibilities and choose the best • with any design, there are many ways to achieve the goals. • LED lighting is a new field; assumptions that work for conventional lighting sources may not apply. 6. Complete final steps • Complete circuit board layout. • Test design choices by building a prototype luminaire. • make sure the design achieves all the design goals. • Use the prototype to further refine the luminaire design. • record observations and ideas for improvement. Table 1: Cree 6-step framework ThE 6-sTEp mEThoDoLogy The goal for this project is to demonstrate an easy-to-implement, high-output lamp that can better the performance of 39-w CmH lamps currently on the market, showing that a narrow-beam 39-watt equivalent retail track light is possible using a single XLamp CXA2530 LeD.2 1. DEfinE LighTing REquiREmEnTs Table 2 shows a ranked list of desirable characteristics to address in a track light. 1 LeD Luminaire Design Guide, Application Note AP15, www.cree.com/xlamp_app_notes/luminaire_design_guide 2 Production and cost-optimized implementations are beyond the scope of this document. |
Podobny numer części - CXA2540-0000-000N00W240F |
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Podobny opis - CXA2540-0000-000N00W240F |
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