STMicroelectronics 400 W FOT-controlled PFC pre-regulator with the L6563S EVL6563S-400W EVL6563S-400W Fiche De Données
Codes de produits
EVL6563S-400W
AN2994
Test results and significant waveforms
Doc ID 15796 Rev 2
17/38
If you compare
and
, you can see that the
input current of the last two figures is much better and the 3
rd
harmonic current distortion is
not noticeable. This demonstrates the benefits of the new voltage feed-forward circuit
integrated in the L6563S, allowing you to get a fast response to mains disturbances and a
very low THD and high PF at the same time.
integrated in the L6563S, allowing you to get a fast response to mains disturbances and a
very low THD and high PF at the same time.
Figure 25.
EVL6563S-400W input mains dip
from 140 to 90 Vac, full load,
C
from 140 to 90 Vac, full load,
C
FF
= 1 µF
Figure 26.
L6562A FOT input mains dip from
140 to 90 Vac, full load,
NO V
140 to 90 Vac, full load,
NO V
FF
input
CH1: Output voltage
CH1: Output voltage
CH2: Input rectified mains voltage
CH2: Input rectified mains voltage
CH3: V
FF
voltage - pin #5
CH4: Input current
CH4: Input current