Boost Converter Average current control mode, doubt regarding reference current.

Discussion in 'The Projects Forum' started by AbhimanyuSingh, May 27, 2011.

  1. AbhimanyuSingh

    Thread Starter New Member

    May 22, 2011
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    How does one obtain the reference current by measuring the output voltage of the Boost PFC converter. I assume that the load is unknown, ie changes with time. Or am I wrong? Why do I need to measure the output voltage to find reference current. Every book I have come across tells the procedure to find out the reference current. But no one explains the idea behind it. Or else there is something I am missing. But I havent understood how to calculate the constants and values to be multiplies with the measured output voltage to calculate the reference current. can someone help me with this? Or sugggest me a book or literature which can clarify this? Thanks in advance.
     
  2. AbhimanyuSingh

    Thread Starter New Member

    May 22, 2011
    24
    0
    At least suggest me the book where these things are explaied.
     
  3. AbhimanyuSingh

    Thread Starter New Member

    May 22, 2011
    24
    0
    I have attached a circuit diagram of typical boost pfc. How is the input of current error amplifier, teh reference current obtained from the output voltage.
     
  4. Bernard

    AAC Fanatic!

    Aug 7, 2008
    4,170
    395
    Looks like Rs, attached to neg. return line supplies current information.
     
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