Hi, It looks like power schema I expect that is already been done. But a current design is still not fully clear to me. I will probably print the schematics PDFs on large A3 sheets tomorrow and try to find out how the Libre internals are interconnected currently..
Thanks 2016-03-02 16:59 GMT+01:00 Luke Kenneth Casson Leighton <[email protected]>: > --- > crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68 > > > On Wed, Mar 2, 2016 at 1:43 PM, Luke Kenneth Casson Leighton > <[email protected]> wrote: > > argh - the bq2419x series only provides up to 1.5A @ 5V in USB-OTG > > mode, not 3A. which rules it out. it's otherwise perfect, damnit. > > ok, i thought about this, and i reckon that it'd be ok to do this: > > * use the USB-OTG "boost mode" to provide USB-OTG power to the EOMA68 > CPU Card [only] > * put the SYS-V output through to the main PCB1, where it will do > boost conversion to 5.0V for USB ICs. SYS-V output could go directly > into the step-up converter for the LCD backlight, and also directly > into the 3.3v regulator. > > so... the spec doesn't change, just the implementation of PCB1. > > l. > > _______________________________________________ > arm-netbook mailing list [email protected] > http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook > Send large attachments to [email protected] >
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