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Project:Pi-Power topping board: Difference between revisions
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Project:Pi-Power topping board (view source)
Revision as of 09:55, 6 November 2012
, 6 November 2012→Power requirements
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Needs more research. Theoretical maximum will probably need adding up the max ratings on all component datasheets, or running stress-tests while on seperate current-monitoring power supplies. | Needs more research. Theoretical maximum will probably need adding up the max ratings on all component datasheets, or running stress-tests while on seperate current-monitoring power supplies. | ||
Elinux has monitored total 5v power use at 750mA during 1080p video playback: http://elinux.org/RPi_Performance#Power | Elinux has monitored total 5v power use at 750mA during 1080p video playback: http://elinux.org/RPi_Performance#Power | ||
Since it's a linear regulator, the input current is the output current + internal use. This is quoted at typically 6mA (quiescent current) - high, but a small proportion of the Pi's total. The main loss in that regulator is because it's passing up to 750mA and dropping 1.7V. That's 1.275 watts out of a total Pi consumption of 3.75, which is where the calculation of 1/3 comes from. --[[User:Artag|Artag]] ([[User talk:Artag|talk]]) 09:55, 6 November 2012 (UTC) | |||
==Charge/power controllers== | ==Charge/power controllers== | ||
