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    how reduce voltage spike

    can any one help ,how reduce voltage spikes at output of 4425 chip to drive mosfets.im using 2 mosfets in series with half bridge pulse signals.the pulses from 4425 has less spike but problem is when it is connected to a pulse transformer the spikes are too high.

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  2. #2
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    Re: how reduce voltage spike

    The problem may be due to a lack of gate resistor. Can you post your schematic?


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  3. #3
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    Re: how reduce voltage spike

    Well you can check a capacitor in range of 0.5-1nF on output pin. Keeping in mind the capacitance should not be much greater.


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  4. #4
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    Re: how reduce voltage spike

    Quote Originally Posted by mtwieg View Post
    The problem may be due to a lack of gate resistor. Can you post your schematic?
    Click image for larger version. 

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ID:	75370 sir here is an attachment



  5. #5
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    Re: how reduce voltage spike

    I can't tell what that circuit is actually supposed to be doing. And where is the pulse transformer in that circuit?



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