4
DFA20 SERIES – SINGLE OUTPUT
120
100
60
CURRENT LIMIT MODE >
80
40
20
0
0
80
20
40
100
120
140
60
OUTPUT VOLTAGE Vs. OUTPUT LOAD
OUTPUT LOAD (%)
N
Typical Performance: (Tc=25°C, Vin=Nom VDC, Rated Load)
80
85
75
70
65
60
90
0
40
30
20
LINE = 72VDC
LINE = 48VDC
LINE = 36VDC
10
50
60
70
80
90 100
48 VOLT EFFICIENCY Vs. LOAD
LOAD (%)
E
NOTES ON USING THE CURVES
1)
The input currents are for 20 watts of output power. For
±5 volt output models the current is approximately 15% less.
The efficiency curves are for 12 volt output models. To use for other models adjust as follows:
±5 volt models subtract approximately 3%.
±15volt models add approximately 1%.
2)
80
75
70
65
85
0
40
30
20
LINE = 18VDC
LINE = 12VDC
LINE = 9VDC
10
50
60
70
80
90 100
12 VOLT EFFICIENCY Vs. LOAD
LOAD (%)
E
85
80
75
70
65
9
15
16
17
14
13
12
100% FULL LOAD
50% FULL LOAD
10
11
18
12 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
LINE INPUT (VOLTS)
E
80
85
75
70
65
90
0
40
30
20
LINE = 36VDC
LINE = 24VDC
LINE = 18VDC
10
50
60
70
80
90 100
24 VOLT EFFICIENCY Vs. LOAD
LOAD (%)
E
85
80
75
70
90
18
30
32
34
28
26
24
100% FULL LOAD
50% FULL LOAD
20
22
36
24 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
LINE INPUT (VOLTS)
E
85
75
80
70
65
60
90
36
60
64
68
56
52
48
100% FULL LOAD
50% FULL LOAD
40
44
72
48 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
LINE INPUT (VOLTS)
E
1.0
0.8
0.6
0.2
0.4
0.0
0
40
30
20
100% LOAD
50% LOAD
10
50
60
80
70
48 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
LINE INPUT (VOLTS)
I
2.0
1.5
1.0
0.5
0.0
0
20
15
10
100% LOAD
50% LOAD
5
25
30
40
35
24 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
LINE INPUT (VOLTS)
I
4
3
2
1
0
0
8
6
4
100% LOAD
50% LOAD
2
10
12
16
14
18
12 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
LINE INPUT (VOLTS)
I
www.power-one.com
For the Most Up-To-Date Information
24 Hours/Day—7 Days/Week