Tool/software:
For several months I have repeatedly experienced fatal failures with TPS54140 buck-converter circuit with 32V input and 3.3V output.
Although the circuit was tested and verified by many engineers an even an external specialized design labaratory, the 40V Schottky diode always failed first. So I changed the diode to 60V, which helped at first.
But in the meantime, it's not the diode that's breaking, but the buck-converter itself. The buck converter has a short circuit from input to output.
Meanwhile, the unpredictable behavior costs a lot of money because of customer complaints.
Is there a known issue with this chip? How can I permanently resolve the problem?
