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JRCW450R4118Z Datasheet(PDF) 11 Page - Lineage Power Corporation |
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JRCW450R4118Z Datasheet(HTML) 11 Page - Lineage Power Corporation |
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11 / 15 page  GE Data Sheet JRCW450R Orca Series; DC-DC Converter Power Modules 36–75 Vdc Input; 32.0Vdc Output; 450W Output May 8, 2013 ©2012 General Electric Company. All rights reserved. Page 11 Figure 17. Case (TREF ) Temperature Measurement Location (top view). Thermal Derating Thermal derating is presented for two different applications: 1) Figure 18, the JRCW450R module is thermally coupled to a cold plate inside a sealed clamshell chassis, without any internal air circulation; and 2) Figure 19, 20 and 21, the JRCW450R module is mounted in a traditional open chassis or cards with forced air flow. In application 1, the module is cooled entirely by conduction of heat from the module primarily through the top surface to a cold plate, with some conduction through the module’s pins to the power layers in the system board. For application 2, the module is cooled by heat removal into a forced airflow that passes through the interior of the module and over the top base plate and/or attached heatsink. Cold plate (inside surface) temperature (ºC) Figure 18. Output Power Derating for JRCW450R in Conduction cooling (cold plate) applications; Ta <70ºC adjacent to module; VIN = VIN,NOM Ambient Temperature, TA (oC) Figure 19. Derating Output Current vs. local Ambient temperature and Airflow, No Heatsink, Vin=48V, airflow from Vi(-) to Vi(+). Ambient Temperature, TA (oC) Figure 20. Derating Output Current vs. local Ambient temperature and Airflow, 0.5” Heatsink, Vin=48V, airflow from Vi(-) to Vi(+). Ambient Temperature, TA (oC) Figure 21. Derating Output Current vs. local Ambient temperature and Airflow, 1.0” Heatsink, Vin=48V, airflow from Vi(-) to Vi(+). |
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