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ELECTRICAL CHARACTERISTICS CURVES
0
Figure 12: Input reflected ripple current, i
source inductor at nominal input voltage and rated load current
(20 mA/div, 2us/div)
0
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.
E48SR12007_05222008
Vo(+)
Vo(-)
, through a 12µH
Figure 13: Output voltage noise and ripple measurement test
s
setup
14
12
10
Figure 15: Output voltage vs. load current showing typical
current limit curves and converter shutdown points
Copper
Strip
10u
1u
8
6
4
2
48V
0
0
1
2
3
4
5
LOAD CURRENT (A)
SCOPE
RESISTIV
LOAD
6
7
8
9
10
6
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