• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 187 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.

BQ25882: what's the purpose of watchdog?

Howard Zou
Genius 12365 points
Part Number: BQ25882

Hi,

in default set of BQ25882, if the register is not written within 40s, the watchdog timer will expire and reset the registers.

What's the purpose of add watchdog function for this device?

Are there any risk if I disable the watchdog at the first time I write the registers through MCU?

  • 0
    TI__Guru**** 166916 points
    Hi Howard,

    As with all of our host chargers, the watchdog timer is used to confirm that a host is present and presumably monitoring charge operation for safety. If it expires, the registers return to default settings, which, we predict, will provide a safer charge configuration (lower input current limit, lower charge current, etc). Disabling the watchdog timer is acceptable.

    Regards,
    Jeff