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AC-DC 220/3.3V or 5.0V DC power supply

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francx

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I want to degsin 220V AC convert to DC 3.3V,5.0V
request 3.3V can supply MAX 2A DC current,5.0v 100mA

how to select IC chip and degsin this AC-DC Hardware

pls give your suggestion.
 

Hi

I dont recommend you to design a high volatge circuit best on SMPS it can be dangerous work

Any how you can go and find a referance design for high voltage smps in ON- SEMI site

All the best

Bobi
 

There are so many posibilities:

TOP223, NCP1010

You can search on google for application notes and datasheets of it.

Good luck :!:
 

hi
you can use uc3842 or top240 series for your requierment
these ICs is the best one for your job
see the link (simple application for you)

attention : very carefull for winding of ferrit ciol because it maybe increase your power lose

good luck
 

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