LTspice MOSFET current plots

Discussion in 'Electronics Resources' started by Obanion, Mar 27, 2011.

  1. Obanion

    Thread Starter New Member

    Nov 26, 2009
    24
    0
    Hi everyone,

    Just to confirm, in LTspice when simulating and plotting current does the following sound reasonable?

    If I am plotting the current through a FET called "M1", the following default trace data would be:

    Id[M1] --> MOSFET drain-source current?
    Ig[M1] --> MOSFET gate current?
    Is[M1] --> MOFSET substrate current? Would this be the same as the body diode?

    Thank you,

    Obanion
     
    Last edited: Mar 27, 2011
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    No, that is the drain terminal current. If the body diode is conducting, it will show that current.
    Yes.
    No.
    Is[M1] --> MOFSET source terminal current. If the body diode is conducting, it will show that current.
     
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