From: Michael C. <mik...@ar...> - 2010-06-04 01:02:24
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On 06/03/2010 04:02 PM, Ash Charles wrote: > Hi Phil, > > Short answer: I'm sorry---I don't have these numbers. > > Long answer: > Your question prompted a little discussion in the office and two > questions popped up: > 1. Do we need power consumption numbers for all four Overos as well as > all the expansion boards (admittedly nice but this takes time when new > revs. are released) and what conditions are appropriate to test (wifi > sleeping, wifi fully active...)? > 2. Software changes can affect the power consumption substantially > (e.g. wifi power management now works on the new kernel so the power > numbers are better). How often|when do we need to redo the > benchmarks? > > I'd welcome any insight into these two questions. > > -Ash > > On Thu, Jun 3, 2010 at 12:41 PM, Philip Balister<ph...@ba...> wrote: > >> On 06/03/2010 02:51 PM, Ash Charles wrote: >> >>> Hi Phil, >>> >>> The Overo uses the TPS65950 for power management which contains >>> several switching buck converters. >>> >> Do you know the power consumption figures for the various COM's? >> >> Philip >> >> >>> -Ash >>> >>> On Thu, Jun 3, 2010 at 11:03 AM, Philip Balister<ph...@ba...> wrote: >>> >>>> On 06/03/2010 01:30 PM, R. P. McMurphy wrote: >>>> >>>>>>> Finally, does it matter if I use 4 volts versus 3.3 volts? >>>>>>> >>>>> No. The power usage is the same. Of course the input current will be >>>>> less at the higher voltage. >>>>> >>>> That suggests the power supply on the Overo is a switcher. Do you know >>>> if this is true? >>>> >>>> Philip >>>> >>>> >>>> >>>> >>>>> On 6/4/10, Philip Balister<ph...@ba...> wrote: >>>>> >>>>>> Does anyone have comprehensive power consumption numbers for the Overo >>>>>> product line? I'm interested in numbers with and without wifi and for >>>>>> various clock speeds and with the DSP operating. >>>>>> >>>>>> This data should be really handy for people designing products around >>>>>> the Overo and I can't find anything on the website. >>>>>> >>>>>> Finally, does it matter if I use 4 volts versus 3.3 volts? >>>>>> >>>>>> Philip >>>>>> >>>>>> ------------------------------------------------------------------------------ >>>>>> ThinkGeek and WIRED's GeekDad team up for the Ultimate >>>>>> GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the >>>>>> lucky parental unit. See the prize list and enter to win: >>>>>> http://p.sf.net/sfu/thinkgeek-promo >>>>>> _______________________________________________ >>>>>> gumstix-users mailing list >>>>>> gum...@li... >>>>>> https://lists.sourceforge.net/lists/listinfo/gumstix-users >>>>>> >>>>>> >>>>> ------------------------------------------------------------------------------ >>>>> ThinkGeek and WIRED's GeekDad team up for the Ultimate >>>>> GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the >>>>> lucky parental unit. See the prize list and enter to win: >>>>> http://p.sf.net/sfu/thinkgeek-promo >>>>> _______________________________________________ >>>>> gumstix-users mailing list >>>>> gum...@li... >>>>> https://lists.sourceforge.net/lists/listinfo/gumstix-users >>>>> >>>>> >>>> ------------------------------------------------------------------------------ >>>> ThinkGeek and WIRED's GeekDad team up for the Ultimate >>>> GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the >>>> lucky parental unit. See the prize list and enter to win: >>>> http://p.sf.net/sfu/thinkgeek-promo >>>> _______________________________________________ >>>> gumstix-users mailing list >>>> gum...@li... >>>> https://lists.sourceforge.net/lists/listinfo/gumstix-users >>>> >>>> >>> ------------------------------------------------------------------------------ >>> ThinkGeek and WIRED's GeekDad team up for the Ultimate >>> GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the >>> lucky parental unit. See the prize list and enter to win: >>> http://p.sf.net/sfu/thinkgeek-promo >>> _______________________________________________ >>> gumstix-users mailing list >>> gum...@li... >>> https://lists.sourceforge.net/lists/listinfo/gumstix-users >>> >> ------------------------------------------------------------------------------ >> ThinkGeek and WIRED's GeekDad team up for the Ultimate >> GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the >> lucky parental unit. See the prize list and enter to win: >> http://p.sf.net/sfu/thinkgeek-promo >> _______________________________________________ >> gumstix-users mailing list >> gum...@li... >> https://lists.sourceforge.net/lists/listinfo/gumstix-users >> >> > ------------------------------------------------------------------------------ > ThinkGeek and WIRED's GeekDad team up for the Ultimate > GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the > lucky parental unit. See the prize list and enter to win: > http://p.sf.net/sfu/thinkgeek-promo > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > I would love to see numbers on at least the base Overo Earth and Summit board. This would give us a good starting in designing our power systems to support projects based on the Overo. I think in general the we should focus more on the power underbelly of the platform. We need to come up with a very repeatable process to make sure it's accurate and that we can test it on our own to verify that our platform is operating within the baseline. My two cents. Mike |