Delta Electronics Q48DC - Manual (Page 3)

DS_Q48DC12003_03112008 3
ELECTRICAL CHARACTERISTICS CURVES
60
63
66
69
72
75
78
81
84
87
90
0.3 0.7 1.1 1.5 1.9 2.3 2.7
OUTPUT CURRENT(A)
E
F
F
IC
IE
N
C
Y
(%
)
1
48Vin
75Vin
36Vin
3.0
3.8
4.6
5.4
6.2
7.0
7.8
8.6
9.4
10.2
0.3 0.7 1.1 1.5 1.9 2.3 2.7
OUTPUT CURRENT(A)
PO
W
E
R
D
ISSI
PAT
IO
N
(W
) 1
36Vin
48Vin
75Vin
Figure 1: Efficiency vs. load current for minimum, nominal, and
maximum input voltage at 25 ° C. Io1=Io2.
Figure 2: Power dissipation vs. load current for minimum,
nominal, and maximum input voltage at 25 ° C. Io1=Io2.
0.5
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2.1
2.3
2.5
25 30 35 40 45 50 55 60 65 70 75
INPUT VOLTAGE (V)
INP
U
T
CU
RR
E
N
T
(
A
) 1
Figure 3: Typical input characteristics at room temperature
(Io=full load).