DFA6 SERIES – SINGLE OUTPUT
DFA6 SERIES BLOCK DIAGRAM
ISOLATION TRANSFORMER
OUTPUT POWER DERATING
6
3
+
+ OUTPUT
+ INPUT
1
– INPUT
2
CURRENT
MODE
PWM
4
- OUT
POWER OUTPUT
5
4
+
–
ISO AMP
3
2
LOW TC
BANDGAP
REFERENCE
50
60
70
80
90
AMBIENT TEMPERATURE
100
Typical Performance: (Tc=25°C, Vin=Nom VDC, Rated Load)
Data for 12 Volt Input Models
12 VOLT EFFICIENCY Vs. LOAD
85
LINE = 9VDC
LINE = 12VDC
80
12 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
1.00
12 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
85
100% LOAD
INPUT CURRENT (AMPS)
EFFICIENCY (%)
100% LOAD
EFFICIENCY (%)
75
70
65
60
55
50
45
0
10
20
30
0.75
80
0.50
50% LOAD
0.25
LINE = 27VDC
50% LOAD
75
0.00
40
50
60
70
80
90 100
0
5
10
15
20
25
30
70
5
10
15
20
25
30
LOAD (%)
LINE INPUT (VOLTS)
LINE INPUT (VOLTS)
Data for 48 Volt Input Models
48 VOLT EFFICIENCY Vs. LOAD
90
85
80
LINE = 20VDC
LINE = 48VDC
48 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
0.5
48 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
90
85
A
INPUT CURRENT (AMPS)
100% LOAD
0.4
100% LOAD
0.3
0.2
50% LOAD
0.1
0.0
EFFICIENCY (%)
75
70
65
60
55
50
45
40
0
10
20
30
40
50
60
70
80
90 100
LINE = 60VDC
EFFICIENCY (%)
80
50% LOAD
75
70
65
20
0
10
20
30
40
50
60
30
40
50
60
LOAD (%)
LINE INPUT (VOLTS)
LINE INPUT (VOLTS)
3
POWER-ONE [ POWER-ONE ]
