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
2
4
6
8
10
12
14
0
1
2
3
4
5
6
7
8
9
10
LOAD CURRENT (A)
OU
TPU
T
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
Strip
Copper
Vo(-)
Vo(+)
10u
1u
SCOPE
RESISTIV
LOAD
0
