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bq25895 might negotiate high voltage USB, which would be passed through to RPi #1

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EvanKrall opened this issue Jul 6, 2021 · 1 comment

Owner

EvanKrall commented Jul 6, 2021

Ideas:

overvoltage protection on VBUS and/or PMID
microcontroller that disables HVDCP_EN and MAXC_EN on power-up (possible race condition?)
separate boost controller from battery (copy design from superpower-rpi)

EvanKrall mentioned this issue

design: pull bq25895's OTG pin high #6

Closed

EvanKrall pushed a commit that referenced this issue


          reroute LVDS diff pairs; add 5v boost converter. Fixes #1.

b67b81c

Owner Author

EvanKrall commented Apr 1, 2022

fixed in cm4 branch; the radxa cm3 version uses the CM3's built-in battery charger (in theory)

EvanKrall closed this as completed

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