Reduce power consumption in standby mode: Disable the LM5163 using the EN
pin to save power on the TPS54308, UCC27524, and UCC27517. The BQ76952 outputs
3.3V voltage through a regulator to power the MCU in low power mode. In standby
mode, if fast discharge is required, the LM5163 can still provide 12V power to
the UCC27524 and UCC27517, and the MOSFET is on for fast response discharge. At
this time, the TPS54308 can still be turned off through the EN pin to turn off
the isolated communication function and reduce power consumption.
Reduced power consumption in transport mode: When the system experiences a
severe cell undervoltage and must enter transport mode, the MCU will configure
the BQ76952 to enter shutdown mode and disable the LM5163 output via the EN pin.
The system will enter ultra-low current consumption mode. The design supports
the charger connection wake-up function. After connecting the charger, the
BQ76952 will wake up and enable the normal 5V voltage regulator output, the MCU
will power on and enable the LM5163 through the EN pin, and the whole system
will return to the normal mode.
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