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  1. smps flyback controller ic

    I am a nub is smps and just completed my first breadboard isolated smps with 24 volt input. I used the SG6848D controller from Ebay. Anyone has any suggestions for a better IC.
    Just some details

    Input voltage 24 volts Output 5.
    Used an opto coupler for feedback.
    The transformer seems to work okay. I designed it for 3 amps. The problem is when I exceed 2 amps the signal gets very jittery and it stops functioning. I was able to go to 3 amps with no feedback ...
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