ir2110 low side problems?

Discussion in 'General Electronics Chat' started by aamir_sheikh, Mar 29, 2014.

  1. aamir_sheikh

    Thread Starter New Member

    Nov 19, 2013
    11
    0
    hi
    i am designing a bldc driver, using ir2110, and sometimes during operation the low side turns on and stays on.....does anybody has ever faced similar problems?
    attached is the schematic,
    also flyback diodes, which one should i use?
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
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  3. aamir_sheikh

    Thread Starter New Member

    Nov 19, 2013
    11
    0
    so the problem is that pin one and pin 3 (vcc and LO) get shorted during operation, i am using 10 ohms at gate resistance and the switching frequency is 2 khz..
     
  4. MaxHeadRoom

    Expert

    Jul 18, 2013
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    2,369
    Are you sure it gets shorted or just that pin 1 goes to 12v?
    Max.
     
  5. shortbus

    AAC Fanatic!

    Sep 30, 2009
    4,004
    1,525
    Assuming your using a micro controller? Is it possible that there is a problem in your program? Is the same thing happening on all three phases? Often people blame the other components when it is a program fault.
     
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