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Hi Jasper,<br><br>
I think "Demystifying Switching Power Supplies, ISBN
0750674458" may be of interest. There are two copies in the CHCH
library system filed under "621.317 MCK"<br><br>
<a href="http://christchurch.bibliocommons.com/item/show/426987037_demystifying_switching_power_supplies">
http</a>
<a href="http://christchurch.bibliocommons.com/item/show/426987037_demystifying_switching_power_supplies">
://christchurch.bibliocommons.com/item/show/426987037_demystifying_switching_power_supplies</a>
<br><br>
-Mark<br><br>
At 01:39 p.m. 16/01/2012, you wrote:<br>
<blockquote type=cite class=cite cite="">Yarrr!<br>
> I have heard good things about LT (Linear Technology). Their
reference<br>
> designs (those in the data sheets and appnotes) are reported to
work<br>
> reliably. They're big in switch mode designs too. Check their range,
but<br>
> I suspect you are pushing the limits (mainly input voltage) with
your<br>
> solar panel. They have a good spice simulator too (LTspice), and are
the<br>
> only company who bothers to mention Linux and say that LTspice
works<br>
> under wine. (There was an article in a recent Elektor about that
too).<br>
> The LT semiconductors should all have spice models for their
simulator.<br>
> I would make extensive use of that in your position.<br>
LT Have an amazing array of good stuff, found one that is perfect
etc...<br>
BUT I really want to get to know one topology to do it all, and this
is <br>
not working in an easy way,<br>
so does anyone know of a chip/topology etc. that is both easyish
(i.e I <br>
can make it... ) and efficient over these ranges:<br><br>
So for ~60V -> 27V (~12A) no problem, buck is easy and rel. efficient
it <br>
seems. no kooky magnetics either.<br>
BUT 40-60V -> 57V (~6A) is a problem, being buck/boost needing
complex <br>
magnetics etc.... This is the range I am finding difficult, esp as I
would <br>
like minimal (pref. only ref change from micro) modification to
change <br>
Vout.<br>
I should qualify this somewhat. COmplex isnt a problem
if its going to <br>
work, its that I am not sure if I could get the magnetics, or make
them <br>
right.<br><br>
Anyone tried Cuk? Not much out there on it in terms of LT etc.<br><br>
Hopefully I will be able to make it tonight, and have a chinwag with
some <br>
of you expert types.<br><br>
TIA<br><br>
Jasper</blockquote></body>
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