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AN3119 Datasheet(PDF) 11 Page - STMicroelectronics

Part # AN3119
Description  250 W transition-mode PFC pre-regulator with the new L6563S
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3119 Datasheet(HTML) 11 Page - 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


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