[sdiy] most efficient way to get 5V from 12V?

[blacet at blacet.com]

A lot depends on how much current you need on the 5V rail. Then you can
sort out what regulator package you need, perhaps a dropping resistor to
take some of the heat load off the regulator and maybe a heat sink. It's
really a balancing act, maybe best left to an experienced engineer but
doable with some thought and real world experiment.


> If I want to run the digital parts of my module at 5V I am going to
> need to convert the 12V source. On some Euro modules the 5V conversion
> is done externally via a Doepfer 5V adapter (just has a regulator and
> a heatsink on it and plugs into the bussboard)
>
> Is there any reason that I can't do this on the module?  If I do it
> there, what is the most efficient way (i.e. generates the least heat)
> so that I don't need a large heat sink?
>
> cheers,
> Danjel
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