EVL6563H-100W Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
fabricante
EVL6563H-100W Datasheet PDF : 31 Pages
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Test results and significant waveforms
AN3118
The power factor (PF) and the total harmonic distortion (THD) have also been measured
and the results are reported in the graphs of Figure 11 and 12. As seen, the PF remains
close to unity throughout the input voltage mains and the total harmonic distortion is very
low over all the load range during operation at low mains. THD increases and PF decreases
during European mains operation at light load because the circuit begins working in burst
mode to maintain good efficiency, preventing from operating at a too high switching
frequency. In case the burst mode operation cannot be accepted, a compromise with
efficiency must be found. The burst mode threshold can be slightly adjusted by modifying
the multiplier divider ratio and/or the compensation network.
Figure 11. EVL6563H-250W TM PFC power
factor vs. output power
Figure 12. EVL6563H-250W TM PFC THD vs.
output power
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The efficiency, measured according to the ES-2 requirements, is shown in Figure 13; it is
excellent at all load and line conditions. At full load it is always higher than 95 %, making this
design suitable for high efficiency power supplies. The average efficiency calculated
according to the ES-2 requirements at different nominal mains voltages is shown in
Figure 14.
Figure 13. EVL6563H-250W TM PFC efficiency Figure 14. EVL6563H-250W TM PFC average
vs. output power
efficiency acc. to ES-2
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12/31
Doc ID 16847 Rev 2
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