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AN3014 Datasheet(PDF) 11 Page - STMicroelectronics |
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AN3014 Datasheet(HTML) 11 Page - STMicroelectronics |
11 / 29 page AN3014 Efficiency measurement Doc ID 16064 Rev 2 11/29 Light load operation efficiency Measurement results are reported in Table 3 below and plotted in Figure 3. As shown, efficiency is better than 68% even for very light loads, such as 1 W. Figure 3. Light load efficiency diagram Table 3. Light load efficiency Test 230 V - 50 Hz 115 V - 60 Hz Vout [V] Iout [mA] Pout [W] Pin [W] Eff. [%] Vout [V] Iout [mA] Pout [W] Pin [W] Eff. [%] 0.25 W 18.97 13.2 0.250 0.610 41.05% 18.97 13.2 0.250 0.590 42.45% 0.5 W 18.97 26.4 0.501 0.877 57.18% 18.97 26.4 0.501 0.870 57.57% 1.0 W 18.97 52.7 0.999 1.467 68.13% 18.97 52.7 0.999 1.457 68.60% 1.5 W 18.98 79.0 1.499 2.160 69.41% 18.97 79.2 1.503 2.134 70.41% 2.0 W 18.97 105.5 2.002 2.822 70.93% 18.97 105.5 2.002 2.895 69.15% 2.5 W 18.97 131.8 2.500 3.558 70.27% 18.98 131.8 2.501 3.711 67.38% 3.0W 18.98 158.3 3.004 4.110 73.09% 18.97 158.3 3.002 4.230 70.97% 3.5 W 18.97 184.5 3.501 4.660 75.13% 18.97 184.5 3.501 4.637 75.49% 4.0 W 18.97 210.8 3.999 5.256 76.08% 18.97 210.8 3.999 5.234 76.40% 4.5 W 18.97 237.3 4.502 5.840 77.08% 18.97 237.3 4.502 5.830 77.22% 5.0 W 18.97 263.6 5.000 6.450 77.52% 18.97 263.6 5.001 6.420 77.89% |
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