Hi,
Customer has some critical questions for the hibernation mode in BQ27451-V200. Could you help to check and give some comments?
Thanks a lot.
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I understand
a: we need to setup [Hibernate] to 1 to exit from “Sleep” into "Wait_Hibernate". (We should follow TI instruction already and available to read out indicate from GUI control console, which means status set right through I2C).
b: then Average current()< Hibernate current or Vcell<Hibernate voltage, to exit from "Wait_Hibernate" into Hibernate mode. This is the point I need further brief.
- Question: What's the Average current sample period. Few seconds( 20 Seconds from above table) or minutes? I recall during former TI FAE discussion, he high light there's time delay to secure fully enter into Hibernation mode
c: Let's say If battery pack has enter "Wait_Hibernate" mode but fail to enter "Hibernate" due other reasons like I2C noise or Averagecurrent() take long time to below hibernate current? Which state will be back? Sleep Mode or WaitFullsleep mode? What Level of quiescent current should I expected
d: we also understand BQ27451 will exit from Hibernate mode if there's communication activity on I2C and -V200 are very sensitive to I2C noise from TI FAE and below upgrade applied to -G1 version(slua641a).
- Question: What's the software filter threshold value here to ignore the I2C noise, few seconds or minutes?