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220v ac to 5v dc

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  • 220v ac to 5v dc

    Hello , now it's my first time to work in pcb board that shouls be supplied by 220V AC directly . than the board have second part that have a MCU and some low power component , so i should have 5V in my board . can someone help me how i get the 5v DC from the 220V AC (without using a transformer) ?? i
    ideally i want a recommanded circuit or component that can convert 220V AC into 5V DC .

  • #2
    I have never done that, so I can't really help. In this situation we always buy adapters.

    Maybe someone else can help?

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    • #3
      Protection requirements?
      Current consumption?
      Efficiency?

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      • #4
        Hello, you can use Pi Expert software for design your power supply,TI site also has an online power designer , but in similar cases I usually use HI-LINK board mounted Adaptors,you can see a sample of this module in link below:
        https://www.youtube.com/watch?v=-JD3E7e0RAE

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        • #5
          karimoviç ,
          You can do this..
          There are times when the off the shelf power supplies are not good enough and it is better to create a rectifier circuit with several protection schemes (Depending on you spec)

          Simply putting..
          - Input protection and filter circuitry
          - You can use a rectifier of appropriate capacity.
          - Use a DC DC converter (Isolated or Non isolated)
          There are several methods for this as indicated by kazemiy974


          Thank you.

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