120 V AC to 3.3 V DC Converter

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Please give your suggestions for the following power supply design.

AC to DC converter

 Input voltage = 60 to 150 V AC

Output voltage = 3.3 V DC (+/-3%), 30 mA

Charge up time =  1ms from zero crossing of ½ cycle used for charging

We don’t need any isolation for the output voltage from the input side for our application.


Thanks and regards,

Sreejith M R.

Please recommend ICs which I can use for the above application.

Hi Sreejith,

Please re-post your question to the "Low Power Design" forum, which handles the type of products suitable for your inquiry.

Thank you.