piclist 2008\07\18\122339a >
Thread: Power supply project
www.piclist.com/techref/power/actodc.htm?key=power
face picon face BY : Sean Breheny email (remove spam text)



That sounds like a decent idea, although it may still have some of the
disadvantages of a switcher (switchers are blamed for being noisy, but
often this noise is very high frequency which a linear regulator
cannot reject very well. So, the way to fix it is to design the SMPS
correctly in the first place and add shielding/filtering.

Sean


On Fri, Jul 18, 2008 at 11:06 AM, Martin <martinspam@spam@nnytech.net> wrote:
> I wonder if it would be a good design to have a buck pre-regulator SMPS
> that was heavily filtered followed by a linear regulator dropping a few
> volts. The buck supply would have a slow feedback response because of
> the filtering but the floating linear reg could make up for it.
> -
> Martin
> -
<e726f69f0807180923q5b2240fwe079d74d3104ed0e@mail.gmail.com> 7bit

In reply to: <4880B16A.5070802@nnytech.net>
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Subject (change) Power supply project

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