Datasheet
CPS20.121
C-Series
12V, 30A, SINGLE PHASE INPUT
9. EFFICIENCY AND POWER LOSSES
AC 100V AC 120V AC 230V
Efficiency typ. 90.9% 91.4% 92.6% at 12V, 30A
Average efficiency
*)
typ. 90.0% 90.5% 91.6% 25% at 7.5A, 25% at 15A,
25% at 22.5A. 25% at 30A
Power losses typ. 6.8W 5.2W 3.0W at 12V, 0A
typ. 19.1W 18.1W 15.5W at 12V, 15A
typ. 36.0W 33.9W 28.8W at 12V, 30A
*) 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 12V,
typ.
Fig. 9-2 Losses vs. output current at 12V, typ.
0 10 15 30A
83
81
85
87
89
93%
9/26
25
91
5 20
a) 100Vac
b) 120Vac
c) 230Vac
b
a
Efficiency
c
Output Current
Power Losses
0 10 15 30A
10
0
5
20
25
40W
25
30
5 20
c
a
b
Output Current
15
a) 100Vac
b) 120Vac
c) 230Vac
35
Fig. 9-3 Efficiency vs. input voltage at 12V,
30A, typ.
Fig. 9-4 Losses vs. input voltage at 12V, 30A,
typ.
Efficiency
120 180 230 264Vac
89
90
91
92
Input Voltage
93
94
95%
100
Power Losses
120 180 230 264Vac
10
15
20
25
Input Voltage
30
35
40W
100
Apr. 2014 / Rev. 1.4 DS-CPS20.121-EN
All parameters are specified at 12V, 30A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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