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Revise low voltage management #37

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jbwillis opened this issue Dec 28, 2022 · 1 comment

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jbwillis commented Dec 28, 2022

If VBAT_OK goes low while the radio (highest power device) is on, the MCU will get turned off and the radio will stay on.

Two options:

allow the mcu to do all power management - VBAT_OK could be fed to the MCU
use VBAT_OK to disconnect all devices from the batteries - this entails more than just disabling 3V3 since the radio and payload not on the 3V3 circuit. Perhaps we skip the harvester regulator and put a buck-boost converter on the mainboard for the MCU.

jbwillis assigned NeilKhera

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jbwillis commented Jan 6, 2023

Use the 3V3 line as a signal to turn off the high power line

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