Hello , It's very interesting, but I was not able to find the chip reference in the freescale web site. Gerard
-----Message d'origine----- De : [email protected] [mailto:[email protected]] De la part de [email protected] Envoyé : mercredi 18 février 2009 12:54 À : [email protected] Cc : [email protected] Objet : [amsat-bb] Solar cell charging of Li ion.
Hi.
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.
_http://www.youtube.com/watch?v=7p9p2ySdcdM_ (http://www.youtube.com/watch?v=7p9p2ySdcdM)
Sorry for the bandwidth. Geek time over. - This may be useful copied to the cubesat reflector.
David G0MRF
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