inverter using ir2101

Discussion in 'The Projects Forum' started by lovelyhakeem, Sep 22, 2013.

  1. lovelyhakeem

    Thread Starter New Member

    Dec 15, 2010
    23
    0
    Dear members,
    I have designed full bridge pure sine wave inverter using IR2101 with specs
    Mosfets : irf740
    mosfet driver : 2101
    boostrap capacitor : 67 Uf
    Gate to source res : 1 Kohm
    main issue when i give about 125 DC to mosfet drain , pure sine wave produced
    but when i give 300 V DC dirctly to make 220 V AC , sparking produced in MOSFETs ??? any idea how to overcome this issue ?? plz help
    Thanks alot
     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
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    I think you have to show us your layout and schematics (full not just some part if it)
     
  3. lovelyhakeem

    Thread Starter New Member

    Dec 15, 2010
    23
    0
    it z simple diagram , just connect pin 1 to Vcc , 2 and 3 to high and low signalfrom microcontroller , 4 to ground and a capacitor between 1 and 4 pin of it2101 , pin 5 and 7 to gate of irf740 with low value resistor and a capacitpr between 6 and 8 pin of ir2101 of 68 uf . gate to source res of mosfet is about 1 k . plz help
     
  4. #12

    Expert

    Nov 30, 2010
    16,310
    6,817
    That is not a drawing. It is also not a photo of how you connected the parts. We can not work with words because they do not show the mistake, only the intent.
     
  5. killivolt

    Active Member

    Jan 10, 2010
    369
    317
    Put 2 Zener's back to back between G and D.
     
  6. t06afre

    AAC Fanatic!

    May 11, 2009
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    It is also very important that you point out where the sparking occurred
     
  7. killivolt

    Active Member

    Jan 10, 2010
    369
    317
    I don't know why you have created another "Thread" on this?

    However, this is taken from another forum, I don't know what your doing and why, that would be helpful for the Senior Members to help you.

    I'm trying to learn these things myself, in my own project, different problems, and of course a different circuit not related to yours.

     
  8. shortbus

    AAC Fanatic!

    Sep 30, 2009
    4,015
    1,531
    Since your mosfet is only rated at 400V, that may be the problem. Mosfets should, as a rule of thumb, be rated at twice the input voltage and input amperage.
     
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