Test results and significant waveforms

AN3063

12/33

Doc ID 16261 Rev 3

The measured efficiency shown in

Figure 9, measured according to the ES-2 requirements,

is very good at all load and line conditions. At full load it is always higher than 93% 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 10.

The measured output voltage at different line and static load conditions is shown in

Figure 11. As visible, the voltage is very stable over the entire input voltage and output load

range.

4.2

Inductor current in TM and L6563H THD optimizer

The following figures show the waveforms relevant to the inductor current at different voltage

mains. As visible in

Figure 12 and 13 the peak inductor current waveform over a line half-

period follows the MULT (pin #3) at both input mains voltages and therefore the line current

is in phase with the input AC voltage, giving low distortion of the current waveform and high

Figure 9.

EVL6563H-100W TM PFC: efficiency

vs. output power

Figure 10.

EVL6563H-100W TM PFC: average

efficiency acc. to ES-2

Figure 11.

EVL6563H-100W TM PFC: static

Vout regulation vs. output power