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CXA2540-0000-000N00V440F 데이터시트(PDF) 7 Page - Cree, Inc

부품명 CXA2540-0000-000N00V440F
상세설명  Retail Track Light Reference Design
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제조업체  CREE [Cree, Inc]
홈페이지  http://www.cree.com/
Logo CREE - Cree, Inc

CXA2540-0000-000N00V440F 데이터시트(HTML) 7 Page - Cree, Inc

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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.
We performed thermal simulation to verify that this thermal design is sufficient.7 Figure 3 shows thermal images of
the lamp assembly. The simulated peak solder point temperature (T
SP) is 64 °C, or 39 °C above ambient. The thermal
resistance of the XLamp CXA2530 LeD is 0.8 °C/w, so at 42 w the junction temperature (T
J) will be approximately 98 °C.
figure 3: CXA2530 retail track light thermal simulation
Drive Electronics
Cree selected a dimmable, universal input voltage driver to supply power to the retail track light.8 The driver is a slightly
modified version of a commercially available driver model. The driver, shown in Figure 4, is located off the track and is
attached to the heat sink/housing assembly.
figure 4: CXA2530 retail track light driver
secondary optics
It is a challenge to create a narrow-beam optic for a relatively large light source such as the XLamp CXA2530 LeD. This
design meets the challenge with a custom reflector that is about 89% optically efficient and produces a 16° beam angle.9
The reflector, shown in Figure 5, fits within the heat sink/housing assembly.
7
For additional information on thermal management, refer to the Thermal Management of Cree XLamp LEDs Application Note, AP05,
www.cree.com/xlamp_app_notes/thermal_management
8
model erP040w-1000-39, energy recovery Products (erP), www.erppowerllc.com/
9
model 4-1361-1, Nata Lighting Company Limited, www.nata.cn/
Thermal Simulation / Measurement
Copyright © 2010, Cree, Inc.
Cree Proprietary & Confidential
pg. 8
Thermal Simulation Tsp ~64C,
•About 75% of the 42W input power will convert
to heat and need sufficient heatsink to dissipate
the heat
•Thermal measurement by thermal couple: Tsp
~63.5C
•Calculated Tj ~94C
T2
T3
Tsp
T2
T3
63.5
60.4
Thermal Simulation / Measurement
Copyright © 2010, Cree, Inc.
Cree Proprietary & Confidential
pg. 8
Thermal Simulation Tsp ~64C,
•About 75% of the 42W input power will convert
to heat and need sufficient heatsink to dissipate
the heat
•Thermal measurement by thermal couple: Tsp
~63.5C
•Calculated Tj ~94C
T2
T3
Tsp
T2
T3
63.5
60.4


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