On 18 April 2015 at 13:22, Tobias Gogolin <usertogo@gmail.com> wrote:


> > Although I haven't yet found any existing SEPIC designs using that
> > part online, it's pretty easy to adapt the standard app note for the
> > chip into a SEPIC design.  All you need to do is add the coupled
> > inductor and the coupling capacitors.  The voltage feedback stuff
> > stays the same.
>

FWIW (unknown) I've read an (you'd have expected to be very) expert comment
that SEPIC inductors MUST NOT be couple for it to be a true SEPIC, and
others (only somewhat less expect to be expert) stating that it's part of
the design.
It works either way.

First expert above also commented on the inherent troublesome control 'map'
of SEPIC converters and said he could not imagine why anyone would want to
use such a difficult to manage topology.
Given the droves of implementations I've seen along the way it may be that
the expert's opinion is more theoretical than not.


             Russell
--=20
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