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전자부품 데이터시트 검색엔진 |
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QPW025A0F41 데이터시트(PDF) 10 Page - Lineage Power Corporation |
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QPW025A0F41 데이터시트(HTML) 10 Page - Lineage Power Corporation |
10 / 14 page ![]() Data Sheet May 7, 2008 QPW025A0F41/QPW025A0F41-H DC-DC Power Module 36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current LINEAGE POWER 10 Please refer to the Application Note “Thermal Characterization Process For Open-Frame Board- Mounted Power Modules” for a detailed discussion of thermal aspects including maximum device temperatures. Heat Transfer via Convection Increased airflow over the module enhances the heat transfer via convection. Thermal derating curves showing the maximum output current that can be delivered by the module versus local ambient temperature (TA) for natural convection, 0.5m/s (100 ft./min) and 1.0 m/s (200 ft./min) are shown in Fig. 15 for the bare module and in Fig. 16 for the module with baseplate. Note that the natural convection condition was measured at 0.05m/s to 0.1m/s (10ft./min. to 20ft./min.); however, systems in which these power modules may be used typically generate natural convection airflow rates of 0.3m/s (60 ft./min.) due to other heat dissipating components in the system. 0 5 10 15 20 25 30 20 30 40 50 60 70 80 90 0.5 m/s (100 lfm) 1.0 m/s (200 lfm) NC TEMPERATURE ( OC) Figure 15. Thermal Derating Curves for the QPW025A0F41 module at 48Vin. Airflow is in the transverse direction (Vin − to Vin+). 0 5 10 15 20 25 30 20 30 40 50 60 70 80 90 0.5 m/s (100 lfm) NC TEMPERATURE ( OC) Figure 16. Thermal Derating Curves for the QPW025A0F41-H baseplate module at 48Vin. Airflow is in the transverse direction (Vin − to Vin+). |
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