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BQ27542-G1: Hibernate current

Hideki Hayashi1
Expert 7720 points
Part Number: BQ27542-G1

Hello teams,

I'd like to ask three question about the hibernate current.

  1. Which current is the hibernate current referring to? What is I_LOAD? AverageCurrent()?
  2. What is the value of the hibernate current; Threshold?
  3. The typical value of Icc in each mode is wrriten in datasheet. Do you have max value?

Regards,

Hideki  

  • 0
    TI__Mastermind 24870 points

    Hello Hideki-san,

    1. Hibernate current is the hibernate mode power consumption for the device.

    2. The hibernate will require an OCV taken and the gauge needs to be in sleep mode. Please refer to power diagram on TRM.

    3. There is no max value unfortunately.

  • 0 in reply to Kang Kang
    TI__Expert 7720 points

    Hi Kang,

    Regarding 1st answer,  'I_LOAD < Hibernate current' description in the datasheet means I_LOAD will be less than 6uA(= I_HIB), right?

    Regarding 2nd answer, my understanding is that HIBERNATE mode require Vcell < Hibernate Voltage OR setting register after WAIT_HIBERATE mode, which requires Cell relaxed AND AverageCurrent() < Hibernate Current after Sleep mode, by referring power diagram.  

    The questions are what the situation of Cell relaxed (=OCV taken) is? and does "AverageCurrent() < Hibernate Current" mean the same as the question above?

    Regards,

    Hideki 

  • 0 in reply to Hideki Hayashi1
    TI__Mastermind 24870 points

    Hello Hideki-san,

    1. That is the typical value on the datasheet.

    2. To enter hibernate, you will require an OCV taken, which means avg current < hibernate current and we have gotten a dv/dt condition.

    Thanks!

  • 0 in reply to Kang Kang
    TI__Expert 7720 points

    Hi Kang,

    Thank you. I understand.

    Regards, Hideki