H48SC3R325_07122011
5
ELECTRICAL CHARACTERISTICS CURVES
Figure 8: Output voltage response to step-change in load
current (75%-50% of Io, max; di/dt =0.1A/µS). Load cap: 10uF
Low ESR capacitor and 1µF ceramic capacitor. Top Trace: Vout
(50mV/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 (50%-75% of Io, max; di/dt = 0.1A/µS). Load cap:10uF
Low ESR capacitor and 1µF ceramic capacitor. Top Trace: Vout
(50mV/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 (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 12µH source impedance
and 220µF electrolytic capacitor (0.1A/div).
