eem2am
Banned
Looking at fig 12 , page 6, of the L6562 TM Mode PFC IC datasheet, its obvious that the "ideal" of having the peak switch current proportional to the rectified line voltage is not important ?
...it shows that at high values of Vcomp (heavy load), the current sense limit "flat tops" (stops going up)
...this means that one actually sees a constant peak current for much of the mains cycle.
...does anyone know why this is?
-it seems against the requirement for high power factor.
L6562 DATASHEET:
https://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00003316.pdf
...it shows that at high values of Vcomp (heavy load), the current sense limit "flat tops" (stops going up)
...this means that one actually sees a constant peak current for much of the mains cycle.
...does anyone know why this is?
-it seems against the requirement for high power factor.
L6562 DATASHEET:
https://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00003316.pdf