Q48SA54001NNFH Datasheet, PDF (5/13 Pages) Delta Electronics, Inc. – Delphi Series Q48SA, 80W Quarter Brick Family DC/DC Power Modules: 36~75V in, 54V/1.5A out

ELECTRICAL CHARACTERISTICS CURVES
Figure 8: Output voltage response to step-change in load
current (50%-25% of Io, max; di/dt = 0.1A/µs). Load cap: 220µF
aluminum capacitor and 1µF ceramic capacitor. TOP Trace:
Vout (200mV/div),Bottom Trace: Iout (500mA/div), Scope
measurement should be made using a BNC cable (length
shorter than 20 inches). Position the load between 51 mm to 76
mm (2 inches to 3 inches) from the module.
Figure 9: Output voltage response to step-change in load
current (25%-50% of Io, max; di/dt = 0.1A/µs). Load cap:
220µF aluminum capacitor and 1µF ceramic capacitor. TOP
Trace: Vout (200mV/div), Bottom Trace: Iout (500mA/div),
Scope measurement should be made using a BNC cable
(length shorter than 20 inches). Position the load between 51
mm to 76 mm (2 inches to 3 inches) from the module.
Figure 10: Test set-up diagram showing measurement points
for Input Terminal Ripple Current and Input Reflected Ripple
Current.
Note: Measured input reflected-ripple current with a simulated
source Inductance (LTEST) of 12 μH. Capacitor Cs offset
possible battery impedance. Measure current as shown above.
Figure 11: Input Terminal Ripple Current, ic, at full rated output
current and nominal input voltage with 12µH source impedance
and 33µF electrolytic capacitor (200mA/div，2us/div).
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