Boost Converter Voltage Ripple

Discussion in 'Homework Help' started by notoriusjt2, Oct 26, 2010.

  1. notoriusjt2

    Thread Starter Member

    Feb 4, 2010
    209
    0
    [​IMG]
    so i need to find ΔVo/Vo

    example on p.246 gives me the equation for Vo

    Vo= 60v

    then back on p.204 it gives me

    ΔVo=ΔQ/C

    then

    ΔQ=((T)(ΔiL))/(8)

    question is... how do i find ΔiL
     
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    The question states the current is discontinuous and the peak value Imax is 8A. So ΔI is from zero to 8A ..... which you can (if you wish) verify for yourself by calculation.
     
  3. notoriusjt2

    Thread Starter Member

    Feb 4, 2010
    209
    0
    Vo= 60V

    ΔQ=66.67u

    ΔVo=.667

    ΔVo/Vo=0.011

    so the answer is A 0.01%

    thanks
     
  4. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    Your math let you down.

    0.011 is 1.1%
     
  5. notoriusjt2

    Thread Starter Member

    Feb 4, 2010
    209
    0
    ahhhh thats what i get for drinking wine with my girlfriend and trying to do homework
     
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