7

XLamp CXa2520 LED

6-inCh DownLight

REfEREnCE DEsign

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.

figure 4: thermal simulation of CXA2520 downlight

Driver

The driver for this downlight can be located above the ceiling, apart from the downlight, and there is no driver size limit.

of a commercially available driver model.

figure 5: CXA2520 downlight driver

secondary optics

optically efficient and fits within the heat sink/housing. The reflector may also be suitable for use in spotlights and track

luminaires.

6

Model SP‑22V2A PFC, Shenzhen SGQ Electronic Technology Co. Ltd, sgqsz.cn.gongchang.com

7

model 5711-e, Nata lighting company limited, www.nata.cn/

Thermal Simulation / Measurement

Copyright © 2010, Cree, Inc.

Cree Proprietary & Confidential

pg. 9

Thermal Simulation Tsp ~45C,

•About 75% of the 26W input power will convert

to heat and need sufficient heatsink to dissipate

the heat

•Thermal measurement by thermal couple: Tsp

~41C

•Calculated Tj ~59C

Tsp

T2

T3

40.8

℃ 38.7℃

Thermal Simulation / Measurement

Copyright © 2010, Cree, Inc.

Cree Proprietary & Confidential

pg. 9

Thermal Simulation Tsp ~45C,

•About 75% of the 26W input power will convert

to heat and need sufficient heatsink to dissipate

the heat

•Thermal measurement by thermal couple: Tsp

~41C

•Calculated Tj ~59C

Tsp

T2

T3

40.8

℃ 38.7℃