Q54SG Datasheet, PDF (7/26 Pages) Delta Electronics, Inc. – Industry standard, DOSA compliant pin out

ELECTRICAL CHARACTERISTICS CURVES
Figure 12: Output voltage response to step-change in load
current (75%-50% of Io, max; di/dt = 0.1A/µs, Vin=54V). Load
cap: 10µF, tantalum capacitor and 1µF ceramic capacitor. Top
Trace: Vout (200mV/div, 400us/div); Bottom Trace: Io (20A/div,
400us/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 13: Output voltage response to step-change in load
current (50%-75% of Io, max; di/dt = 0.1A/µs, Vin=54V). Load
cap: 10µF, tantalum capacitor and 1µF ceramic capacitor. Top
Trace: Vout (200mV/div, 400us/div); Bottom Trace: Io (20A/div,
400us/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.
is
+
Cs: 220uF
ic
+
100uF,
ESR=0.2 ohm @
25^oC 100KHz
Vin+
Vin-
Figure 14: 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 below
Figure 15: Input Terminal Ripple Current, ic, at full rated output
current and nominal input voltage with 12µH source impedance
and 100µF electrolytic capacitor (500 mA/div, 2us/div).
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DS_Q54SG12050_09092016