a buck converter

Discussion in 'Homework Help' started by fprmfl, Apr 6, 2014.

  1. fprmfl

    Thread Starter New Member

    Apr 6, 2014
    hi, I was asked to find the right form of the ripple output voltage of a buck converter(ideal and in the continuous, steady-state).
    according to my calculation, when the switch is ON, the form of Δv(ripple voltage) is Δv=D(I-Iout)/2*C*Fsw
    (I=the current of inductance, Iout=output current, C=capacitance, Fsw=switching frequency)
    did I get this right or not? if I got this form right, then could you let me know how to get the amount of I?
    and if I'm wrong, could you tell me how to get the right form of Δv?

    thank you very much for helping me. your knowledge will be really helpful.