IR 2110 dramas

Discussion in 'The Projects Forum' started by Andyph, Jun 17, 2009.

  1. Andyph

    Thread Starter New Member

    May 6, 2009
    Hi Gents,

    I am an electronics tech (not a designer) and have inherited a product that seems to suffer from problems.

    the circuit has a TL494 that drivers 2 IR 2110s into a H bridge.

    I have cleaned up lots of the switching noise -using gate resisitors has done lots but I still seem to kill the IR2100s and the H bridge FETS.

    My supply line seems to be very solid without much noise or any sag.

    The failures are always dead at start up - the FET gate is short to source and also the IR 2110 is damaged.

    Any idea or help appreiacted!!!

    go gentle


  2. nanovate

    Distinguished Member

    May 7, 2007
    Please post a schematic so that we can further assist you.