[amsat-bb] Re: Solar cell charging of Li ion.

AUVRAY GERARD Gerard.Auvray at alcatel-lucent.fr
Wed Feb 18 04:29:27 PST 2009

Hello ,
It's very interesting, but I was not able to find the chip reference in the freescale web site.

-----Message d'origine-----
De : amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] De la part de G0MRF at aol.com
Envoyé : mercredi 18 février 2009 12:54
À : amsat-bb at amsat.org
Cc : g7hia at btinternet.com
Objet : [amsat-bb] Solar cell charging of Li ion.

This is a bit 'geeky' but may be useful to any cubesat builders reading the BB.
Freescale have a nice video on You Tube showing their new ultra low voltage DC-DC converters being used to charge a Lithium ion cell.
>From a single solar cell with an onload voltage of just 349mV they are
charging a lithium ion battery at 3.82V at 63mA with about 83%  efficiency.
Sorry for the bandwidth. Geek time over.  - 
This may be useful copied to the cubesat reflector.
David  G0MRF
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