Other Parts Discussed in Thread: TLV840
Hi Team,
We have a sensor built with CC2640R2F which is already in mass production for some periods.
Recently, we got three failure units from field. The failure phenomenon was kept so we can do some basic measurement and we found there is no output on the DCDC_SW.(and no VDDR)
The phenomenon is gone when we power off it and power on it again.
From the record, these three units are working good originally and suddenly stop working(they were kept in this failure state and sent to us).
We know the customer will put a magnet on the back of the sensor to fix it to the metal wall.
So we're wondering will the magnet cause this issue?
We have tried to put a very strong magnet close to the chip and the inductor, but we didn't see the same failure.
Any suggestion for debugging this issue?