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Posted by: Nadav Harpaz on

Hi,

I'm looking for a very small solution which will meet safety standard.

AC/DC power supply with 90-240V AC in and 3.3V 200mA out.

Please advise

Regard's

NAdav  

Comments

Submitted by VCastrellon on 06/16/2014

You can use the following link as your platform.     http://www.powerint.com/sites/default/files/PDFFiles/der141.pdf

 

You can modify the circuit for 3.3 volts by changing VR1 to 2.2 V Zener. 

If you decide to do this way, you need to check the circuit for proper operation. Or you can try a new design with different core.  For both cases you can get help from PI expert. You download this program from the below link 

  http://www.powerint.com/en/design-support/pi-expert-design-software

 Once you ran the program, it will suggest you a power supply design that includes the PC layout.  You need to read the datasheet of the controller you decide to use in order to make sure your power supply is properly designed. Hope this info will be useful to you

   

Submitted by Nadav Harpaz on 06/16/2014

Thanks a LOT for your help.

Can you help me finding manufacturer who can manufacturer transformers up to your spec ?

As for begining I will need samples.

 

Please advise

Thanks a LOT

Nadav