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Power Supply Design

Discussion in 'Power Electronics' started by Nikhil, Feb 21, 2015.

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  1. Nikhil


    Feb 21, 2015

    I need to design a 150V - 230V AC input to 5V, 1.5A DC output power supply which has two USB Outputs.
    Should I go for the transformerless design or should I include a transformer?
    In any of the above cases, what should be the circuit diagram?

    I would appreciate your help on this point. Thanks in advance!

    - Nikhil
  2. davenn

    davenn Moderator

    Sep 5, 2009
    hi Nikhil,

    Welcome to EP :)

    There are plenty of switchmode PSU's out there that can handle 100-240VAC input and produce the output
    you want
    unless you have really good electronics skills, I would recommend you just but one

  3. Nikhil


    Feb 21, 2015
    Hello Dave,

    Thank you for the answer. I have one query however. I plan to use this power supply in a product and the mould design of this product will have to in such a way to fit in this power supply. If the PSU gets discontinued by the manufacturer, I will end up without any option with a pre-designed moulded case with me. Do you still recommend going for a PSU?
  4. davenn

    davenn Moderator

    Sep 5, 2009
    You will never design and build one cheaper
    there are many plugpacks capable of your requirements
  5. Arouse1973

    Arouse1973 Adam

    Dec 18, 2013
    Yes I agree with Dave. Most manufactures copy each other so unless it's from an unknown manufacture I am sure you would be able to replace it. When you find one why don't you email some other suppliers and ask them if they do something the same or similar.
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