All parameters are specified at 24V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time, unless noted otherwise.
10
Rockwell Automation Publication 1606-RM044A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
9. Efficiency and Power Losses
AC 100V
AC 120V
AC 230V
Efficiency
typ.
91.5%
92.6%
93.5%
at 24V, 10A
Average efficiency *)
typ.
91.7%
92.4%
92.4%
25% at 2.5A, 25% at 5A, 25%
at 7.5A. 25% at 10A
Power losses
typ.
4.4W
4.9W
6.1W
at 24V, 0A
typ.
22.4W
19.1W
16.7W
at
24V,
10A
*) The average efficiency is an assumption for a typical application where the power supply is loaded with 25% of the nominal load for 25%
of the time, 50% of the nominal load for another 25% of the time, 75% of the nominal load for another 25% of the time and with 100%
of the nominal load for the rest of the time.
Fig. 9-1
Efficiency vs. output current at 24V,
typ
Fig. 9-2
Losses vs. output current at 24V, typ.
Efficiency
2
3
4
5
6
7
8
9 10A
86
87
88
89
90
91
Output Current
92
93
94%
A...100Vac
B... 120Vac
C... 230Vac
A
B
C
Power Losses
0
1
2
3
4
5
6
7
10A
0
3
12
15
18
Output Current
21
24W
8
9
A
B
C
6
9
A...100Vac
B... 120Vac
C... 230Vac
Fig. 9-3
Efficiency vs. input voltage at 24V,
10A, typ.
Fig. 9-4
Losses vs. input voltage at 24V, 10A,
typ.
Efficiency
85
120
155
190
225 260Vac
88
89
90
91
Input Voltage
92
93
94%
Power Losses
9
12
15
18
21
Input Voltage
24
27W
85
120
155
190
225 260Vac