220v ac to 5v dc

[karimoviç]

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 .

[robertferanec]

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

Maybe someone else can help?

[qdrives]

Protection requirements?
Current consumption?
Efficiency?

[kazemiy974]

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

[chitransh92]

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.