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    Proteus- 48V to 12V(DC) Push Pull SMPS with UC2525 OutB Problem :S

    Hello dear edaboard members ;

    I'm really tired of getting the same error from proteus :( I have 48 to 12 V dc-dc converter pre-design(not completed to apply in real life) with UC2525 PWM regulator chip. My problem is when i am trying to drive to mosfet gates(IRFZ44N) PWM-A(pin-11) is nearly correct but PWM-B(pin-14) is about to gnd.(some 1V peaks when the rise and fall times of PWMA faced). I hope i could explain my problem :S

    Here is the proteus design. One thing you should do after open .dsn file with proteus simply push start simulation button then observe digital osciloscope.

    Note : The one who do not know how to open .dsn files with proteus(7,8,etc) simply File/Import Legacy Project/ Browse Schematic then import my .dsn file

    Edit : My file is directly project file so you don't need to import it just click it two times(in .rar format)

    Thanks in advance

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  2. #2
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    Re: Proteus- 48V to 12V(DC) Push Pull SMPS with UC2525 OutB Problem :S

    I uploaded .pdf format for one who could not display it into proteus.

    Here is :



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  3. #3
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    Re: Proteus- 48V to 12V(DC) Push Pull SMPS with UC2525 OutB Problem :S

    Hello Brother, are you fine?
    Weel, your circuit it's correct guy :) but when you use UC2525, you need link the PIN3 (SYNC) in VCC, because is necessary turn on the internal synchronizer.
    If you use o UC3525, the logic is reverse!you have link the PIN3(SYNC) in the GND.
    I test your circuit and send the print of my page( Simulation Proteus) for you see...



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  4. #4
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    Re: Proteus- 48V to 12V(DC) Push Pull SMPS with UC2525 OutB Problem :S

    Click image for larger version. 

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ID:	119621Click image for larger version. 

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    Follow the images of circuit!...if you don't get, let me know...!!


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  5. #5
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    Re: Proteus- 48V to 12V(DC) Push Pull SMPS with UC2525 OutB Problem :S

    Thank you so much my friend. Also, it is late i know but im fine thank you :)
    Nature may reach the same result in many ways.

    Nikola Tesla



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