Delta Electronics S48SR - Manual (Page 4)

DS_S48SR12001_07052006
4
ELECTRICAL CHARACTERISTICS CURVES
Figure 5 :
Turn-on transient at zero load current (10 ms/div).
Top Trace: Vin (20V/div) Bottom Trace Vout (5V/div).
Figure 6: Output voltage response to step-change in load
current (50%-75%-50% of Io, max; di/dt = 0.1A/µs). Load
cap: 10µF, 100 m
ΩESR tantalum capacitor and 1µF
ceramic capacitor. Top Trace: Vout (50mV/div), Bottom
Trace: Iout (0.5A/div).
20 ﹫ 100KHz ℃ 20 ℃ 100KHz ﹫
Ω ESR< 0.3 ESR< 0.3
TEST
12uH
Cs:68uF/100V 68uF/100V
s
i
Vi(-)
Vi(+)
Ω
Figure 7 :
Test set-up diagram showing measurement points
for Input Reflected Ripple Current. (Figure 8).
Note: Measured input reflected-ripple current with a simulated
source Inductance (L
TEST
) of 12 µH. Capacitor Cs offset
possible battery impedance.
Figure 8: Input Reflected Ripple Current, is, at full rated
output current and nominal input voltage with 12 µ H source
impedance and 68 µ F electrolytic capacitor (2 mA/div).