The high-side capacitor need to filter
out the AC ripple component during the boost-mode of operation. The value of
capacitance can be calculated with Equation 12
Equation 12.
Where,
- iout-DClink is the
output DC-link current
- D is the duty cycle
- n is the number of interleaved
stages
- fsw is the switching
frequency of the converter
- Vout(pk-pk) is the
peak-to-peak output voltage ripple