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 SYNQOR
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6 page 
Product # PQ60010QTA40 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2QT601C Rev. B 10/1/04 Page 6 T Technical S echnical Specification pecification Input: Input: Output: Output: Current: Current: P Package: ackage: 35-75 V 35-75 V 1.0 V 1.0 V 40 A 40 A Quarter-brick Quarter-brick 0 5 10 15 20 25 30 35 40 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 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 40 amp load current with 55°C air flowing at the rate of 200 LFM. Air is flowing lengthwise from out- put to input (nominal input voltage). Figure 9: Turn-on transient at full rated load (resistive load) (2 ms/div). Input voltage pre-applied. Ch 1: Vout (500mV/div). Ch 2: ON/OFF input (5V/div). Figure 10: Turn-on transient at zero load current (2 ms/div). Ch 1: Vout (500mV/div). Ch 2: 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 capac- itor and 1µF ceramic capacitor. Ch 1: Vout (100mV/div), Ch 2: Iout (10A/div). Figure 12: Output voltage response to step-change in load current (50%-75%- 50% of Iout(max): dI/dt = 1A/µs). Load cap: 470µF, 30 m Ω ESR tantalum capacitor and 1µF ceramic cap. Ch 1: Vout (100mV/div), Ch 2: Iout (10A/div). Semiconductor junction temperature is within 1 °C of surface temperature |
