Other Parts Discussed in Thread: TPS65217
Dear TI, we are using TPS650250RHBT to power a AM3352-based design, very similar to the BeagleBone. We are experiencing about a 10% failure rate in the field, where the TPS650250 dies / fails to start up / regulate - its switching output(s) stay around 0.8V - the LDO outputs make 1V8 correctly. The TPS650250RHBT is fed by 5V from a LM22670MR-5.0 circuit. Are there any know issues, such as input spikes below 0V or other transient effects that might damage regulator? Why are one or more of the switching outputs affected? (usually only one of the 3 switching outputs is damaged, in our case, it is the output configured for 3V3). Can you advise what to investigate? I look forward to your reply. Thank you. Franco