Delta Electronics S48SA - Manual (Page 3)

DS_S48SA05006_06022006
ELECTRICAL CHARACTERISTICS CURVES
65
70
75
80
85
90
95
1 2 3 4 5 6 6
OUTPUT CURRENT (A)
EF
F
IC
IEN
C
Y
(
%
)
.6
36Vin
48Vin
75Vin
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
1 2 3 4 5 6
OUTPUT CURRENT (A)
POW
E
R
D
ISSIPATION
(
W
)
6.6
36Vin
48Vin
75Vin
Figure 1: Efficiency vs. load current for minimum, nominal, and
maximum input voltage at 25 ° C.
Figure 2: Power dissipation vs. load current for minimum,
nominal, and maximum input voltage at 25 ° C.
0.0
0.2
0.4
0.6
0.8
1.0
1.2
30 35 40 45 50 55 60 65 70 75
INPUT VOLTAGE (V)
IN
P
U
T
CURRE
NT
(
A
)
Io=6.6A
Io=3.96A
Io=0.66A
Figure 3: Typical input characteristics at room temperature. Figure 4: Turn-on transient at full rated load current (2 ms/div).
Top Trace: Vout (2V/div); Bottom Trace: ON/OFF Control
(5V/div).
3