DA14681 SOC, power circuit fails?

⚠️
Hi there.. thanks for coming to the forums. Exciting news! we’re now in the process of moving to our new forum platform that will offer better functionality and is contained within the main Dialog website. All posts and accounts have been migrated. We’re now accepting traffic on the new forum only - please POST any new threads at https://www.dialog-semiconductor.com/support . We’ll be fixing bugs / optimising the searching and tagging over the coming days.
2 posts / 0 new
Last post
mahmed106
Offline
Last seen: 1 month 2 weeks ago
Joined: 2019-05-03 17:28
DA14681 SOC, power circuit fails?

Hi dialog

we are working on a custom board based on DA14681. Actually our product is old and is been in the market for over 2 years. But recently we have faced an issue that some of our boards that were ccompleted and tested by the production team. After around 2 years we have tested them and they are not working.

Obviously the first culprit is the battery. Then we removed old battery and plugged in the fresh one. Still board was not responding. Then we checked the powers and there no power on V33, VDD1V8, VDD1V8P V12 and V14. This is alarming as these powers are independent of the code running inside SOC. As soon as VBAT is connected, these power comes.

We dont know the reason of this failure of DA14681's power. This has happened on multiple boards. Also we are using DA14681's internal charger to charge the battery. Can you please tell us, what can be the probable cause of this failure?

Cz we are in production of alot of new boards and if this is some hardware issue then we need to stop the factory production asap.

Device: 
PM_Dialog
Offline
Last seen: 2 months 2 weeks ago
Staff
Joined: 2018-02-08 11:03
Hi mahmed106,

Hi mahmed106,

We have taken this offline from the forum. An email should be received in your registered email address.

Thanks, PM_Dialog