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I have a question about PR902. please help me.

un hyeong ham
Prodigy 70 points

Thank you very much.
One more thing, I would like to change DC voltage input in PR902 schematic,
We want to input and output voltage. Such as DC input 24V, DC output 5v, 3.3v, -15v.
I am going to use all the parts as it is.
I use all of parts that like PR902 schematic.
I think I need to change the T1(GA3544-BL), and increase resistors in primary. Isn't that right?
Or should I find another circuit?
Help would be appreciated.
Regards.

  • 0
    TI__Genius 11855 points
    That will be a complete redesign of the flyback power supply used in PR902. It can be done. It will involve redesign of the flyback transformer, changing the FET, redesign the feedback compensation circuits. You can read TI application notes (from TI website) on these topics.

    Shamim