Electrical characteristics curves – Delta Electronics E48SH User Manual
Page 6
ELECTRICAL CHARACTERISTICS CURVES
Strip
Copper
Vo(-)
Vo(+)
10u
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
0
0.5
1
1.5
2
0
5 10 15 20 25 30 35 40 45 50 55 60
Output current (A)
Output voltage (V)
Figure 14: Output voltage ripple at nominal input voltage and
rated load current (Io=40A)(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.
E48SH1R540_02272007
6
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