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Question regarding Constant Current Modeling of Buck

  1. Jan 10, 2017 #1
    Hello everyone,

    I was reading this application note and I am having trouble understanding how a parallel RC circuit with ESR bring driven by a current source has a transfer function of 1-pole. When I do my math I get a pole and a zero.

    I have attached an image of the claim that there's 1-pole as well as the link to the AN.

    Thank you all very much.

    http://cds.linear.com/docs/en/application-note/AN149fa.pdf (Page. 11)

    Attached Files:

  2. jcsd
  3. Jan 16, 2017 #2


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    Gold Member

    can you provide us with more info. what did you get for a transfer function. what did they get....
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