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PQ48015QGA25NNS Datasheet(PDF) 5 Page - SynQor Worldwide Headquarters |
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PQ48015QGA25NNS Datasheet(HTML) 5 Page - SynQor Worldwide Headquarters |
5 / 13 page Product # PQ48015QGA25 Phone 1-888-567-9596 Doc.# 005-2QG451D Rev. E 9/30/08 Page 5 Performance Curves 48Vin 1.5Vout 25A Quarter Quarter Brick Brick 60 65 70 75 80 85 90 0 3 5 8 10 13 15 18 20 23 25 Load Current (A) 36 Vin 48 Vin 75 Vin Figure 1: Efficiency at nominal output voltage vs. load current for min- imum, nominal, and maximum input voltage at 25°C. 80 81 82 83 84 85 86 87 88 0 100 200 300 400 500 Air Flow (LFM) 25 C 40 C 55 C Figure 2: Efficiency at nominal output voltage and 60% rated power vs. airflow rate for ambient air temperatures of 25°C, 40°C, and 55°C (nominal input voltage). 0 1 2 3 4 5 6 7 8 9 10 0 3 5 8 10 13 15 18 20 23 25 Load Current (A) 36 Vin 48 Vin 75 Vin Figure 3: Power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 3.0 3.5 4.0 4.5 5.0 5.5 6.0 0 100 200 300 400 500 Air Flow (LFM) 25 C 40 C 55 C Figure 4: Power dissipation at nominal output voltage and 60% rated power vs. airflow rate for ambient air temperatures of 25°C, 40°C, and 55°C (nominal input voltage). 0 5 10 15 20 25 0 2540 5570 85 Ambient Air Temperature (oC) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 0 LFM (0 m/s) Figure 5: Maximum output power derating curves vs. ambient air tem- perature for airflow rates of 0 LFM through 400 LFM with air flowing across the converter from pin 3 to pin 1 (nominal input voltage). Figure 6: Thermal plot of converter at 25 amp load current with 55°C air flowing at the rate of 200 LFM. Air is flowing across the converter sideways from pin 3 to pin 1 (nominal input voltage). Semiconductor junction temperature is within 1 °C of surface temperature |
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