ELECTRICAL CHARACTERISTICS CURVES
Copper Strip
Vo(+)
10u
Vo(-)
1u
SCOPE
RESISTIVE
LOAD
Figure 12:
Input reflected ripple current, i
s
, through a 12µH
source inductor at nominal input voltage and rated load current
(20 mA/div, 2us/div).
Figure 13:
Output voltage noise and ripple measurement test
setup
Figure 14:
Output voltage ripple at nominal input voltage and
rated load current (Io=30A)(50 mV/div, 2us/div)
Load capacitance: 1µF ceramic capacitor and 10µF tantalum
capacitor. Bandwidth: 20 MHz. Scope measurements 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 15:
Output voltage vs. load current showing typical
current limit curves and converter shutdown points.
E48SH3R330_05142009
6
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