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QD48T025033 DC-DC Converter Data Sheet
36-75 VDC Input; 2.5 and 3.3VDC @ 15A Outputs
Fig. 20: Output voltage response to Iout1 load current step-
change of 3.75 A (50%-75%-50%) at Iout2 = 7.5 A and Vin =
48 V. Ch1 = Vout1 (50 mV/div), Ch2 = Vout2 (50 mV/div), Ch3
= Iout1 (10 A/div.), Ch4 = Iout2 (10 A/div.). Current slew rate:
0.1 A/ μ s, Co = 10 μ F tantalum + 1 μ F ceramic. Time scale: 0.5
ms/div.
Fig. 22: Output voltage response to Iout1 load current step-
change of 3.75 A (50%-75%-50%) at Iout2 = 7.5 A and Vin =
48 V. Ch1 = Vout1 (100 mV/div), Ch2 = Vout2 (100 mV/div),
Ch3 = Iout1 (10 A/div.), Ch4 = Iout2 (10 A/div.). Current slew
rate: 5 A/ μ s, Co = 300 μ F tantalum + 1 μ F ceramic. Time scale:
0.5 ms/div.
Fig. 21: Output voltage response to Iout2 load current step-
change of 3.75 A (50%-75%-50%) at Iout1 = 7.5 A and Vin =
48 V. Ch1 = Vout1 (50 mV/div), Ch2 = Vout2 (50 mV/div), Ch3
= Iout1 (10 A/div.), Ch4 = Iout2 (10 A/div.). Current slew rate:
0.1 A/ μ s, Co = 10 μ F tantalum + 1 μ F ceramic. Time scale: 0.5
ms/div.
Fig. 23: Output voltage response to Iout2 load current step-
change of 3.75 A (50%-75%-50%) at Iout1 = 7.5 A and Vin =
48 V. Ch1 = Vout1 (100 mV/div), Ch2 = Vout2 (100 mV/div),
Ch3 = Iout1 (10 A/div.), Ch4 = Iout2 (10 A/div.). Current slew
rate: 5 A/ μ s, Co = 300 μ F tantalum + 1 μ F ceramic. Time scale:
0.5 ms/div.
MCD10084 Rev. 1.0, 25-Sep-08
Page 12 of 15
www.power-one.com
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