IR 2110 problem in PWM

Discussion in 'General Electronics Chat' started by aravindzzz, May 15, 2011.

  1. aravindzzz

    Thread Starter New Member

    May 9, 2011
    I am doing a three phase inverter using IR 2110 ....
    I got a perfect three phase output...
    but since i wanted to change the output voltage , i was planning to do PWM..
    But the 2 Mosfets in each leg is getting shorted when i try to produce PWM..

    I did this by making all HIN AND LIN zero ....
    I have grounded SD and havent used in programming
    i am just changing the input logic Hin and Lin to get the required output

    Am i doing anything wrong
    please help.....
    dis is for a final year project............
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    Without the schematic to look at, we can't tell what might be wrong.