Reference Manual User guide

All parameters are specified at 48V, 5A, 230Vac, 25°C ambient and after a 5 minutes run-in time, unless noted otherwise.
10 Rockwell Automation Publication 1606-RM045A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
9. Efciency and Power Losses
AC 100V AC 120V AC 230V
Efciency typ. 90.4% 91.2% 92.0% at 48V, 5A
Average efciency *) typ. 89.6% 90.0% 90.3% 25% at 1.25A, 25% at 2.5A,
25% at 3.75A, 25% at 5A
Power losses typ. 5.6W 5.7W 5.9W at 48V, 0A
typ. 25.5W 23.2W 20.9W at 48V, 5A
*) The average efciency 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 Efciency vs. output current at 48V,
typ.
Fig. 9-2 Losses vs. output current at 48V, typ.
Efciency
1
86
87
88
89
90
91
92
85
93%
120Vac
100Vac
230Vac
5A234
Output Current
1.5 2.5 3.5 4.5
Power Losses
012345A
3
6
12
15
18
21
27W
120Vac
100Vac
230Vac
Output Current
9
24
Fig. 9-3 Efciency vs. input voltage at 48V,
5A, typ.
Fig. 9-4 Losses vs. input voltage at 48V, 5A,
typ.
Efciency
85 120
155
190 225 260Vac
88
89
90
91
Input Voltage
92
93
94%
Power Losses
8
12
16
20
24
Input Voltage
28
32W
85 120
155
190 225 260Vac