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PQ48050HMA25PYS Datasheet(PDF) 5 Page - SynQor Worldwide Headquarters |
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PQ48050HMA25PYS Datasheet(HTML) 5 Page - SynQor Worldwide Headquarters |
5 / 14 page 60 65 70 75 80 85 90 95 100 0 3 5 8 10 13 15 18 20 23 25 Load Current (A) 36 Vin 48 Vin 75 Vin Product # PQ48050HMA25 Phone 1-888-567-9596 Doc.# 005-2HM450B Rev. C 4/9/03 Page 5 88 89 90 91 92 93 94 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 2 4 6 8 10 12 14 16 18 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. 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 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 from input to output (nominal input voltage). Figure 6: Thermal plot of converter at 23 amp load current with 55°C air flowing at the rate of 200 LFM. Air is flowing across the converter from input to output (nominal input voltage). Half Half Brick Brick Performance Curves 48Vin 5.0Vout 25A Figure 1: Efficiency at nominal output voltage vs. load current for min- imum, nominal, and maximum input voltage at 25°C. |
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