Hi,
I am using TPS7A33 to generate -15 V from -16.5 V. The issue I met is the chip would fail consistently after a long term working. The output shows 0.65 V after the failure happen. In the data sheet, I found that the chip could be vulnerable to ESD issue, so I am planning to add a ESD protection circuit for the chip. My plan is to add a diode between the output and the ground. Hope to have your recommendation on ESD protection circuit and which diode model would work properly based on your experience. Thanks!