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DS_Q48DC12003_03112008
6
ELECTRICAL CHARACTERISTICS CURVES
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 (L
TEST
) of 12 μH. Capacitor Cs offset
possible battery impedance. Measure current as shown above.
Figure 11: Input Terminal Ripple Current, i
c
, at full rated output
current and nominal input voltage with 12
µH source impedance
and 33
µF electrolytic capacitor (500 mA/div).
Figure 12: Input reflected ripple current, i
s
, through a 12µH
source inductor at nominal input voltage and rated load current
(20 mA/div).