Buck - Boost design equations

Discussion in 'General Electronics Chat' started by gusmas, Jan 22, 2013.

  1. gusmas

    Thread Starter Active Member

    Sep 27, 2008
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    Hi....

    I am at breaking point... I can not find the design equations for a buck boost converter.... Does anyone have a link for them or a pdf somewhere??

    Thanks... again :)
     
  2. crutschow

    Expert

    Mar 14, 2008
    12,993
    3,227
    Here are some basic equations of that.
     
  3. bug13

    Well-Known Member

    Feb 13, 2012
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  4. tubeguy

    Well-Known Member

    Nov 3, 2012
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  5. gusmas

    Thread Starter Active Member

    Sep 27, 2008
    239
    0
    hey hey long time no see! thanks will look at it
     
  6. gusmas

    Thread Starter Active Member

    Sep 27, 2008
    239
    0
    OK so I got my buck-boost converter working in simulation! whoop... but I forgot that the buck-boost inverts the output voltage, so it is Negative with respect to ground.... Does this mean the circuit requiring the output power of the buck converter can just swap around the connections at the output? sounds dodgy to me...
     
  7. crutschow

    Expert

    Mar 14, 2008
    12,993
    3,227
    You possibly could if you have a floating ground at the converter input, but otherwise Google "buck-boost non-inverting converter" to find several references to that.
     
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