Problem with reading the voltage divider sensor

[boys_always_cry]

@johnerrington

You have not said what FREQUENCY the SEPIC is using; that will affect the values you need to filter out noise introduced by the SEPIC which is changing the load on the solar panel - and hence its voltage; and also the voltage produced at the output.

I use 62.5 kHz switching frequency, with a target output voltage of 24 volts
the electronic components that I use for the filter circuit are, capacitors 470uF/50V (2x), toroid inductors 28,6uH (2x), MUR3060 diode, and IRFP450N mosfet.