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6 page 
Product # DQ63312QGL07 Phone 1-888-567-9596 Doc.# 005-2DQ312D Rev. B 10/7/03 Page 6 Performance Curves 48Vin 3.3/1.2Vout 68W Quarter Quarter Brick Dual Brick Dual 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 01 2345 678 9 10 11 12 13 14 15 3.3V, Iout (A) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) Figure 7: Maximum output power derating curves at 55°C vs. airflow rates of 100 through 400 LFM. Curve shows available current for 1.2V rail on y axis and available current for 3.3V rail on x axis. (nom. Vin) Figure 8: Thermal plot of converter at 15A load on 1.2V ouput and 15A load on 3.3V output with 55°C air flowing at 200 LFM. Air flow across the converter is from pin 1 to pin 3 (nominal input voltage). Figure 9: Maximum output power derating curves at 70°C vs. airflow rates of 100 through 400 LFM. Curve shows available current for 1.2V rail on y axis and available current for 3.3V rail on x axis. (nom. Vin) Figure 10: . Thermal plot of converter at 15A load on 1.2V ouput and 13.5A load on 3.3V output with 70°C air flowing at 200 LFM. Air flow across the converter is from pin 1 to pin 3 (nominal input voltage). 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 012 3456 789 10 11 12 13 14 15 3.3V, Iout (A) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) Figure 11: Maximum output power derating curves at 85°C vs. airflow rates of 100 through 400 LFM. Curve shows available current for 1.2V rail on y axis and available current for 3.3V rail on x axis. (nom. Vin) Figure 12: Thermal plot of converter at 15A load on 1.2V ouput and 10.5A load on 3.3V output with 85°C air flowing at 200 LFM. Air flow across the converter is from pin 1 to pin 3 (nominal input voltage). 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0123 456789 10 11 12 13 14 15 3.3V, Iout (A) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) Semiconductor junction temperature is within 1 °C of surface temperature Semiconductor junction temperature is within 1 °C of surface temperature Semiconductor junction temperature is within 1 °C of surface temperature |
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