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20
21
-1
1
12
Power Supply PS1000-D2-24.40.RM
Power Losses
6
Power Losses
Figure 6.1
Power losses when both inputs draw equal current
Figure 6.2
Power losses when only one input is used
DC 12V
DC 24V
Power losses
typ.
1.6W
1.7W
input: 2x10A
typ.
5.8W
5.9W
input: 2x20A
typ.
2.3W
2.4W
input: 1x20A,
(only one input is connected to input voltage)
Standby power losses
typ.
0.07W
0.15W
at no output current,
(only one input is connected to input voltage)
typ.
0.12W
0.23W
at no output current,
(both inputs are connected to input voltages)
Power Losses, typ.
0
0
5
10
30
1.0
2.0
4.0
5.0
7W
40A
25
15
20
35
Output Current
A
3.0
A... 25°C
B... 60°C
6.0
B
Output
V
A
Power
supply
24V,20A
+
-
set to
24.5V
V
A
I
1
I
2
U
1
U
2
A
V
I
OUT
U
OUT
I
1
I
2
=
U
2
U
1
=
Losses
U
1
=
U
OUT
-
*
I
1
+
)
(
*
U
2
*
I
2
I
OUT
Power
supply
24V,20A
+
-
set to
24.5V
Variable
Load,
0-40A
PS1000-D2-
24.40.RM
Input 1
Input 2
Output
Power Losses, typ.
0
0
2.5
5
15
0.5
1.0
2.0
2.5
4W
20A
12.5
7.5 10
17.5
Output Current
1.5
3.0
3.5
A... 25°C
B... 60°C
A
B
Losses
U
1
=
U
OUT
-
*
I
1
*
I
OUT
Output
V
A
Power
supply
24V,20A
+
-
I
1
U
1
A
V
I
OUT
U
OUT
PS1000-D2-
24.40.RM
Input 1
Input 2
Output
Variable
Load,
0-20A