Isolated voltage regulator

[estratos]

I'm designing a circuit where 3.3VDC (less than 100 mA) need to be generated from an existing 5VDC. I'd typically use a LDO for this purpose but this time I need that both voltages were isolated.

Which is the simplest way to accomplish this?

Thanks!

Daniel.

 

[keith1200rs]

You can buy isolated DC-DC converters which will do the job. No need to design your own.

Keith

 

[estratos]

Thanks Keith.

The few isolated DC/DC converters that I know are used in communication lines only. I've always thought that these converters do not work for stable voltages.
Could I maybe use one of these?
https://www.google.com/url?sa=t&sou...sg=AFQjCNEvUZzzogV0cyEqtxV_bLLCO_NMwA&cad=rja

Daniel.

 

[keith1200rs]

No, that is just a transformer. Have a browse here: Home : tracopower.com

Keith

 

[estratos]

Thanks Keith.

TES 1-0510V could do the trick. A bit erxpensive though (> USD 9)

Regards,

Daniel.

 

[keith1200rs]

Easier than designing your own though!

Keith