Datasheet

AN3329 Efficiency measurement
Doc ID 18376 Rev 1 9/47
2 Efficiency measurement
Table 1 shows the overall efficiency, measured at different mains voltages. The full load
efficiency is 90.09 % at 115 Vac, and 91.85 % at 230 Vac. Both values are considerably high
and maintained high even decreasing the load as reported in Ta bl e 1 . Measurements are
also reported in the graph of Figure 3.
Table 1. Overall efficiency measured at different AC input voltages
Load = 100 %
5 V 12 V 24 V Pout Pin Eff.
Vin [Vrms] Vout [V] Iout [A] Vout [V] Iout [A] Vout [V] Iout [A] [W] [W] [%]
90 5.01 1.99 11.69 2.01 23.47 5.98 173.8 197.5 88.00 %
115 5.01 1.99 11.69 2.01 23.48 5.98 173.9 193.6 90.09 %
230 5.01 1.99 11.69 2.01 23.48 5.98 173.8 189.3 91.85 %
265 5.01 1.99 11.69 2.01 23.48 5.98 173.8 188.9 91.98 %
Load = 75 %
5 V 12 V 24 V Pout Pin Eff.
Vin [Vrms] Vout [V] Iout [A] Vout [V] Iout [A] Vout [V] Iout [A] [W] [W] [%]
90 5.01 1.51 11.70 1.51 23.49 4.50 130.9 147.5 88.78 %
115 5.01 1.51 11.70 1.51 23.49 4.50 130.9 145.5 89.96 %
230 5.01 1.51 11.70 1.51 23.49 4.50 130.9 143.0 91.56 %
265 5.01 1.51 11.70 1.51 23.49 4.50 130.9 142.7 91.73 %
Load = 50 %
5 V 12 V 24 V Pout Pin Eff.
Vin [Vrms] Vout [V] Iout [A] Vout [V] Iout [A] Vout [V] Iout [A] [W] [W] [%]
90 5.01 1.00 11.71 1.01 23.51 3.00 87.5 98.6 88.67 %
115 5.01 1.00 11.72 1.01 23.51 3.00 87.5 97.7 89.54 %
230 5.01 1.00 11.71 1.01 23.51 3.00 87.5 96.6 90.53 %
265 5.01 1.00 11.71 1.01 23.51 3.00 87.5 96.5 90.64 %
Load = 25 %
5 V 12 V 24 V Pout Pin Eff.
Vin [Vrms] Vout [V] Iout [A] Vout [V] Iout [A] Vout [V] Iout [A] [W] [W] [%]
90 5.02 0.49 11.72 0.50 23.53 1.51 43.83 50.82 86.25 %
115 5.02 0.49 11.72 0.50 23.53 1.51 43.83 50.57 86.67 %
230 5.02 0.49 11.72 0.50 23.53 1.51 43.83 50.47 86.85 %
265 5.02 0.49 11.72 0.50 23.53 1.51 43.83 50.29 87.16 %