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PQ24018QGA25NYS Datasheet(PDF) 5 Page - SynQor Worldwide Headquarters |
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PQ24018QGA25NYS Datasheet(HTML) 5 Page - SynQor Worldwide Headquarters |
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5 / 13 page  Product # PQ24018QGA25 Phone 1-888-567-9596 Doc.# 005-2QG218D_A 3/1/02 Page 5 Performance Curves 24Vin 1.8Vout 25A 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) Quarter Quarter Brick Brick Figure 7: Maximum output power derating curves vs. ambient air tem- perature for airflow rates of 0 LFM through 400 LFM with air flowing lengthwise from output to input (nominal input voltage). Figure 8: 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 from output to input (nominal input voltage). Figure 9: Turn-on transient at full load (resistive load) (2 ms/div). Ch1: Vout (500mV/div) Ch2: ON/OFF input (5V/div) Figure 10: Turn-on transient at zero load (2 ms/div). Ch1: Vout (500mV/div) Ch2: ON/OFF input (5V/div) Figure 11: Output voltage response to step-change in load current (50%-75%-50% of Iout(max); dI/dt = 0.1A/µs). Load cap: 10µF, 100 m Ω ESR tantalum capacitor and 1µF ceramic capacitor. Ch1: Vout (100mV/div), Ch2: Iout (10A/div). Figure 12: Output voltage response to step-change in load current (50%-75%-50% of Iout(max): dI/dt = 5A/µs). Load cap: 470µF, 30 m Ω ESR tantalum capacitor and 1µF ceramic capacitor. Ch1: Vout (100mV/div), Ch2: Iout (10A/div). Semiconductor junction temperature is within 1 °C of surface temperature Vin = 24V |
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