AN3119 datasheet(11/32 Pages) STMICROELECTRONICS

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AN3119

Test results and significant waveforms

Doc ID 16849 Rev 2

11/32

For user reference, waveforms of the input current and output voltage at 230 Vac and 100

Vac input voltage mains during nominal and 70 W load operation are shown in Figure 7, 8,

9, and 10.

As shown in the images, the current shape is very good and sinewave has very low

distortion, as confirmed by the low THD in all line and load conditions.

The power factor (PF) and the total harmonic distortion (THD) have also been measured

and the results are given in Figure 11 and 12. As shown, the PF remains close to unity

throughout the input voltage mains and the total harmonic distortion is very low over all the

Figure 7.

EVL6563S-250W TM PFC: input

current waveform @230 V-50 Hz -

250 W load

Figure 8.

EVL6563S-250W TM PFC: input

current waveform @100 V-50 Hz -

250 W load

CH1: Vout

CH2: V bridge

CH4: I_AC

CH1: Vout

CH2: V bridge

CH4: I_AC

Figure 9.

EVL6563S-250W TM PFC: input

current waveform @230 V-50 Hz - 70

W load

Figure 10.

EVL6563S-250W TM PFC: input

current waveform @100 V-50 Hz - 70

W load

CH1: Vout

CH2: V bridge

CH4: I_AC

CH1: Vout

CH2: V bridge

CH4: I_AC

AN3119 Datasheet(PDF) 11 Page - STMicroelectronics