DFA20 SERIES – SINGLE OUTPUT
Typical Performance: (Tc=25°C, Vin=Nom VDC, Rated Load)
12 VOLT EFFICIENCY Vs. LOAD
85
LINE = 9VDC
12 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
85
12 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
4
EFFICIENCY (%)
EFFICIENCY (%)
80
LINE = 12VDC
75
LINE = 18VDC
80
100% FULL LOAD
75
INPUT CURRENT (AMPS)
50% FULL LOAD
3
100% LOAD
2
50% LOAD
1
70
70
65
65
0
10
20
30
40
50
60
70
80
90 100
9
10
11
12
13
14
15
16
17
18
0
0
2
4
6
8
10
12
14
16
18
LOAD (%)
24 VOLT EFFICIENCY Vs. LOAD
90
85
LINE = 18VDC
LINE INPUT (VOLTS)
24 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
90
LINE INPUT (VOLTS)
24 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
2.0
INPUT CURRENT (AMPS)
100% FULL LOAD
EFFICIENCY (%)
EFFICIENCY (%)
85
50% FULL LOAD
80
1.5
100% LOAD
1.0
50% LOAD
0.5
80
75
70
LINE = 24VDC
75
LINE = 36VDC
70
18
65
0.0
20
22
24
26
28
30
32
34
36
0
5
10
15
20
25
30
35
40
0
10
20
30
40
50
60
70
80
90 100
LOAD (%)
48 VOLT EFFICIENCY Vs. LOAD
90
85
LINE INPUT (VOLTS)
48 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
90
85
LINE INPUT (VOLTS)
48 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
1.0
INPUT CURRENT (AMPS)
100% FULL LOAD
0.8
100% LOAD
0.6
0.4
0.2
0.0
EFFICIENCY (%)
80
75
70
65
LINE = 36VDC
EFFICIENCY (%)
80
75
50% FULL LOAD
70
65
60
36
50% LOAD
LINE = 48VDC
LINE = 72VDC
60
0
10
20
30
40
50
60
70
80
90 100
40
44
48
52
56
60
64
68
72
0
10
20
30
40
50
60
70
80
LOAD (%)
OUTPUT VOLTAGE Vs. OUTPUT LOAD
120
LINE INPUT (VOLTS)
LINE INPUT (VOLTS)
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%.
NORMALIZED OUTPUT (%)
100
80
CURRENT LIMIT MODE >
60
40
20
0
0
20
40
60
80
100
120
140
2)
OUTPUT LOAD (%)
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