Q48SG12034NRFA Datasheet, PDF (5/26 Pages) Delta Electronics, Inc. – Delphi Series Q48SG Quarter Brick Family Full Digital Control DC/DC Power Modules:

ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Logic
Figure 5: Turn-on transient at zero load current (20ms/div).
Vin=48V. Top Trace: Vout, 5V/div; Bottom Trace: ON/OFF input,
2V/div
Figure 6: Turn-on transient at full rated load current (constant
current load) (20 ms/div). Vin=48V. Top Trace: Vout, 5V/div;
Bottom Trace: ON/OFF input, 2V/div
For Input Voltage Start up
Figure 7: Turn-on transient at zero load current (20 ms/div).
Vin=48V. Top Trace: Vout, 5V/div, Bottom Trace: input voltage,
20V/div
Figure 8: Turn-on transient at full rated load current (constant
current load) (20 ms/div). Vin=48V. Top Trace: Vout, 5V/div;
Bottom Trace: input voltage,20V/div
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DS_Q48SG12034_06272013