EVBUM2775/D

www.onsemi.com

8

Basic tests and measurements were done. The results of

efficiency, power factor, power losses, load transients and

startup can be seen in the Figures 7−13. The used load was

Halogen light bulb.

Figure 7. Efficiency of PFC Stage for Various Value of Input AC Voltage and Load

95.00%

95.20%

95.40%

95.60%

95.80%

96.00%

96.20%

96.40%

96.60%

96.80%

97.00%

190

200

210

220

230

240

250

260

270

Input AC voltage [V]

Efficiency PFC stage

930 W load

466 W load

155 W load

Figure 8. Power Factor of PFC Stage for Various Value of Input AC Voltage and Load

0.838

0.858

0.878

0.898

0.918

0.938

0.958

0.978

0.998

190

200

210

220

230

240

250

260

270

Input AC voltage [V]

Power factor PFC stage

933 W load

466 W load

155 W load