BQ76952: How to set host watchdog fault recovery time？

Prodigy 220 points

Part Number: BQ76952

Tool/software:

What is the logic of host watchdog failure recovery? How long does it take to recover?

Can I set the recover time?

HWD

over 1 year ago

0 Alexis_H over 1 year ago

TI__Genius 17875 points

Hello L,

Section 5.2.16 Host Watchdog Protection in the BQ76952 Technical Reference Manual explains how it works for BQ76952 and how to set the recovery delay.

Best Regards,
Alexis

0 L 11 months ago in reply to Alexis_H

Prodigy 220 points

Yes, I found the setting protection time before.
But I didn't find the setting time for the host watchdog protection to resume

+1 Alexis_H 11 months ago in reply to L

TI__Genius 17875 points

Hello L,

You won’t be able to set the time it takes for the host watchdog protection to resume. As mentioned in that section, "the device will recover (if configured for autonomous recovery) when valid communications are received". After valid communications are received, it could take up to 250 ms in NORMAL mode for the device to evaluate and clear the fault through the turn on of the FETs.

Best Regards,
Alexis

0 L 11 months ago in reply to Alexis_H

Prodigy 220 points

Thank you so much！

Power management

Power management forum

BQ76952: How to set host watchdog fault recovery time？