• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 348 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Original question:

BQ77915: Customization and use for high current discharge using multiple mosfets in parallel

BQ77905: Minimum discharge current

Needhu Gunasegaran
Intellectual 2890 points
Part Number: BQ77905
Other Parts Discussed in Thread: BQ77915

Hello,

does the bq77905 have a minimum discharge current, which wakes the bq chip in case it entered a sleep or passive mode?

Thanks,

Needhu

  • 0
    TI__Guru 54715 points

    Hi Needhu,
    No, the bq77905 is always on when the voltage is sufficient. When undervoltage it turns off DSG but leaves CHG on (if there are no other faults) to allow charge of the battery. If the cells become depleted to the point the part is below POR voltage, it will turn off CHG and it can not be charged.

    The bq77915 has similar protection features with the addition of OCC, balancing and a hibernate mode.  The hibernate mode must be controlled by a signal to the IC, it is not a wake up with time or voltage based shutdown.

  • 0 in reply to WM5295
    TI__Intellectual 2890 points

    Hi,

    Could you please take this question offline so that i can share the project info.

    Thank you very much for your feedback.

    - Needhu