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UCC12050EVM-022: flyback converter input bulk capacitor calculation

SURESHAN .K
Prodigy 150 points
Part Number: UCC12050EVM-022

Tool/software:

How to calculate delta-v in this tool. my min voltage is 60 and peak is 60*1.41 . Basically my input signal is 60vac at 50hz, so rectified signal is 100hz . 

  • 0
    TI__Genius 15566 points

    Sureshan,

    You can calculate deltaV with the equation: dv=I*dt/C, where I is the current discharging Cbulk cap (roughly the peak voltage over the load resistor) and deltat is the time the capacitor discharges through the resistor load. When the capacitance is larger, the ripple is reduced and the peak current is higher.

    Thank you