how much dead time i need for a irfp460 for a 1500 watts dc motor ??

Discussion in 'General Electronics Chat' started by wewe, May 1, 2010.

  1. wewe

    Thread Starter Member

    Apr 9, 2010
    31
    1
    hello , i have successfully created a pwm controlled from a potentiometer
    the frequency is 10KHz
    the motor i will be controlling is a 1500 watts DC motor
    i was wondering if someone can suggest what's the minimum dead time i need if i am using a irfp460 mosfet for the H bridge
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Your question is impossible to answer without a detailed schematic.

    Post your schematic, preferably in .png format. Use the "Go Advanced" and "Manage Attachment" buttons.
     
  3. wewe

    Thread Starter Member

    Apr 9, 2010
    31
    1
    actually i don't have a schematic
    and i cant draw one
    i will be using a driver called TLP 250 for the mosfet but this driver don't exist in proteus (my simulator) , that's why i cant draw any schematics
    i thought that my question depends on the speed of the mosfet , because every mosfet requires a certain time to shut down , so i thought tha i will use twice this time (or maybe less) as my dead time
    i don't need a very accurate number , just a safe number in order to run my motor , that's all
     
  4. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    The datasheet says is has a high to low switching of MAX .5uS.
     
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