Delta Electronics S48SA - Manual (Page 5)

DS_S48SA05006_06022006
ELECTRICAL CHARACTERISTICS CURVES
Strip Copper
Vo(-)
Vo(+)
10u 1u
SCOPE RESISTIVE
LOAD
Figure 9 :
Input Reflected Ripple Current, is, at full rated output
current and nominal input voltage with 12 µ H source impedance
and 33 µ F electrolytic capacitor (2 mA/div).
Figure 10: Output voltage noise and ripple measurement test
setup. Scope measurement 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.
0.0
1.0
2.0
3.0
4.0
5.0
6.0
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0
LOAD CURRENT (A)
O
U
T
P
U
T
VO
L
T
A
G
E (
V
)
Vin=48V
Figure 11: Output voltage ripple at nominal input voltage and
rated load current (20 mV/div). Load capacitance: 1 µ F ceramic
capacitor and 10 µ F tantalum capacitor. Bandwidth: 20 MHz.
Figure 12: Output voltage vs. load current showing typical
current limit curves and converter shutdown points.
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