Backlight Power Measurement

Werner Almesberger werner at openmoko.org
Wed Oct 28 14:45:39 CET 2009


Aaron Carroll wrote:
> I replaced L1704 with a TDK VLF3012AT @ 2.2uH (data sheet:
> http://www.tdk.co.jp/tefe02/e531_vlf3012a.pdf) and repeated the
> experiments.  With this new part the efficiency of the conversion
> jumped to 80%  :-)

Wow ! Impressive result, congratuilations !

There are quite a lot of these Subaru inductors in GTA02. I wonder
how many more silent contributors to global warming of this kind
we have, e.g., IO_3V3 or USB power.

Has anyone been able to locate a data sheet for the Subaru parts
so that one could see if the specifications give any hint ?

- Werner



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