[Arm-netbook] EOMA68 laptop battery management.
Luke Kenneth Casson Leighton
lkcl at lkcl.net
Wed Mar 2 15:59:59 GMT 2016
crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
On Wed, Mar 2, 2016 at 1:43 PM, Luke Kenneth Casson Leighton
<lkcl at lkcl.net> 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.
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