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Buck converter in continuos mode

  1. Aug 30, 2011 #1
    Hello,

    I don't quite understand the buck converter in continuos mode ... looking at the graph for inductor current on wikipedia, at t=0, there is a nonzero inductor current, Imin ... how is this possible when the inductor current cannot change instantaneously (assuming it starts at zero, then at t=0 when the switch is on, it must be zero as well). Perhaps I'm not thinking about this correctly, and I shouldn't be thinking about when the experiment "starts", maybe I should be thinking at some time t<0 it had current I_min through it before the switch came on?

    Here is the graph I'm looking at: http://en.wikipedia.org/wiki/File:Buck_chronogram.png

    Dan
     
  2. jcsd
  3. Aug 30, 2011 #2
    Yes, this is what you should think. The picture describes steady state operation. The time T is one period.
     
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