My customer is using the TS12A4516 (DBV) in a design. I attached an image showing the implementation (internal link)
They are going to production now, but have been seeing a 2~3 issues a month - and finally think they found the cause.
They do a final operation check before shipping - and during these tests, they see a fault.
The fault seems to happen because the TS12A4516 does not properly connect the output COM to NC, and the processor looking at the NC detects the open-state. The High-Voltage supply should be turned on, and supplying power to the load, but because the switch isn't connecting COM to NC, this isn't detected.
Take a look at the image, and let me know if there are any concerns with the setup, or something specific to the device that needs to be taken into consideration.