Buck converter

Discussion in 'Power Electronics' started by Dabu WhiteHacker, Nov 29, 2017.

  1. Dabu WhiteHacker

    Thread Starter Member

    Sep 5, 2017
    50
    0
    Hey i was desinging a buck converter using LM2576 IC.
    i have two questions:
    1. More Capacitor at input and and output means better, Right ? currently there value are 100uF and 470uF respectively.
    2. What should be the value of inductor, i was thinking of 330uH
     
  2. AlbertHall

    AAC Fanatic!

    Jun 4, 2014
    8,181
    2,036
    The datasheet gives the details of the calculations necessary for the values of the inductor and capacitors.
     
  3. crutschow

    Expert

    Mar 14, 2008
    23,136
    6,862
    No, more is not better for a switching regulator.
    If you deviate significantly from the values calculated from the data sheet equations, the converter may become unstable and/or not work properly.
     
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