Delta Electronics Delphi Series S48SS - Manual (Page 4)

DS_s48SS12001_06082006
4
ELECTRICAL CHARACTERISTICS CURVES
Figure5 :
Turn-on transient at zero load current (10 ms/div). Top
Trace: Vout (5V/div); Bottom Trace: ON/OFF Control (2V/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 12µH source
impedance and 68µF electrolytic capacitor (2 mA/div)