TIDA-00792: REGOUT is going off.

Harsh Rathor

Part Number: TIDA-00792
Other Parts Discussed in Thread: BQ76940,

Tool/software:

I have TIDA-00792. After doing connections when i am booting the BQ76940. It turns on but after 20-30 seconds REGOUT goes from 2.5V to 0V. What can be the possible reason for that?

5 months ago

0 Alexis_H 5 months ago

TI__Genius 17795 points

Hello Harsh,

What's the REGSRC voltage measuring when this occurs?

Best Regards,
Alexis

0 Harsh Rathor 5 months ago in reply to Alexis_H

Prodigy 40 points

approx 8V

0 Alexis_H 5 months ago in reply to Harsh Rathor

TI__Genius 17795 points

Hello Harsh,

Are you waking up from SHIP mode to NORMAL mode by pulling the TS1 pin greater than Vboot?
Section 2.2.8 Sleep and Wake-up Circuit from the TIDA-00792 Design Guide talks about these steps as well.

Best Regards,
Alexis

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TIDA-00792: REGOUT is going off.