All parameters are specified at 24V, 2.5A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
8
Rockwell Automation Publication 1606-RM014A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
8. Efficiency and Power Losses
AC 100V
AC 120V
AC 230V
Efficiency
typ.
87.4%
88.5%
90.4%
at 24V, 2.5A (full load)
Power losses
typ.
0.45W
0.5W
0.85W
at 0A
typ.
3.9W
3.7W
3.9W
at
24V,
1.25A
(half
load)
typ.
8.6W
7.8W
6.4W
at
24V,
2.5A
(full
load)
Fig. 8-1
Efficiency vs. output current at 24V,
typ.
Fig. 8-2
Losses vs. output current at 24V,
typ.
Efficiency
0
82
86
90
80
92%
2.5A
0.5
1.5
2.0
Output Current
1.0
84
88
a) 230Vac
b) 120Vac
c) 100Vac
b
c
a
Power Losses
0
1
4
8
0
9W
2.5A
0.5
1.5
2.0
Output Current
1.0
2
6
b
c
a
3
7
a) 230Vac
b) 120Vac
c) 100Vac
5
Fig. 8-3
Efficiency vs. input voltage at 24V,
2.5A, typ.
Fig. 8-4
Losses vs. input voltage at 24V, 2.5A,
typ.
Efficiency
85
120
155
190
225 260Vac
Input Voltage
91%
86
88
90
89
87
85
Power Losses
0
2
4
6
8
10
12W
85
120
155
190
225 260Vac
Input Voltage