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Efficiency and Power
Losses
Attributes
Efficiency
Average efficiency
Power losses
(1) An assumption for a typical application, where the DC/DC converter 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.
Figure 13 - Efficiency Versus Output Current at 48V,
Typ
Efficiency
96%
95
94
93
92
91
90
89
Output Current
88
2
3
4
5
6
7
Figure 15 - Efficiency Versus Input Voltage at 48V,
10 A, Typ
Efficiency
96%
95
94
93
92
91
Input Voltage
90
80
140
200
Rockwell Automation Publication 1606-RM047A-EN-P - September 2021
Values
AC 110V
AC 300
Typ
93.1%
94.6%
Typ
93.1%
94.5%
(1)
Typ
92.1%
93.3%
Typ
7.4 W
2.5 W
Typ
20.0 W
15.9 W
Typ
35.6 W
27.4 W
Typ
42.7 W
33.5 W
b
a
a: 110V DC
b: 300V DC
8
9
10
11
12 A
260
320
380V DC
Notes
At 48V, 10 A
At 48V, 12 A (Power Boost)
25% at 2.5 A, 25% at 5 A, 25% at 7.5 A, 25% at 10 A
At 48V, 0 A
At 48V, 5 A
At 48V, 10 A
At 48V, 12 A (Power Boost)
Figure 14 - Losses Versus Output Current at 48V, Typ
Power Losses
40 W
35
30
25
20
15
10
5
Output Current
0
0
1
2
3
4
5
6
Figure 16 - Losses Versus Input Voltage at 48V, 10 A,
Typ
Power Losses
40 W
35
30
25
20
15
Input Voltage
10
80
140
200
a
b
a: 110V DC
b: 300V DC
7
8
9 10
11
12 A
260
320
380V DC
9
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