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E48SR12007_05222008
6
ELECTRICAL CHARACTERISTICS CURVES
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
0
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4
6
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12
14
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LOAD CURRENT (A)
OUTPUT VOLTAGE (V
)
48V
Figure 14: Output voltage ripple at nominal input voltage and
rated load current (Io=7A)(20 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
0
StripCopper
Vo(-)
Vo(+)
10u
1u
SCOPE RESISTIV
LOAD
0