Datasheet

QS3.241
Q-Series
24V, 3.4A, SINGLE PHASE INPUT
8. EFFICIENCY AND POWER LOSSES
AC 100V AC 120V AC 230V
Efficiency typ. 87.1% 88.7% 90.0% at 24V, 3.4A
Average efficiency *) typ. 88.9% 89.9% 88.3% 25% at 0.85A, 25% at 1.7A,
25% at 2.55A, 25% at 3.4A
Power losses typ. 0.9W 1.0W 2.1W at 24V, 0A
typ. 12.1W 10.4W 9.1W at 24V, 3.4A
*) 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. 8-1 Efficiency vs. output current at 24V,
typ
Fig. 8-2 Losses vs. output current at 24V, typ.
Efficiency
0.5 1.0 3.5A
87
88
89
90
Output Current
91
92%
1
2
0
V
a
c
100V
a
c
2
3
0
V
a
c
86
2.0 3.01.5 2.5
Power Losses
0 0.5 3.5A
0
2
4
6
8
10
12W
120Vac
100Vac
1.01.52.02.53.0
230Vac
Output Current
Fig. 8-3 Efficiency vs. input voltage at 24V,
3.4A, typ.
Fig. 8-4 Losses vs. input voltage at 24V, 3.4A,
typ.
Efficiency
9/25
85 120
155
190 225 260Vac
86
87
88
89
Input Voltage
90
91
92%
Power Losses
0
3
6
9
12
15
18W
85 120
155
190 225 260Vac
Input Voltage
Sep. 2017 / Rev. 2.2 DS-QS3.241-EN
All parameters are specified at 24V, 3.4A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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