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Thread: On-resistance of a power MOSFET

  1. #1
    New Member New Member schneider is on a distinguished road
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    Feb 2017

    On-resistance of a power MOSFET

    I googled a lot but still canīt find.
    So I ask in this way.

    How can I calculate the on-resistance of a power MOSFET?

    Thank you in advance.

  2. #2
    Beginner Beginner designer is on a distinguished road
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    Feb 2017
    The on-state resistance of a power MOSFET is made up of several components

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    Rsource = Source diffusion resistance
    Rch = Channel resistance
    RA = Accumulation resistance
    RJ = "JFET" component-resistance of the
    region between the two body regions
    RD = Drift region resistance
    Rsub = Substrate resistance

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