A VOUT_OV fault was detected because a voltage greater than the VOUT_OV_FAULT_LIMIT was detected on this channel’s VSENSE pin.

Possible Causes:

• VOUT_OV_FAULT_LIMIT set too low.
• Regulator feedback resistor value(s) incorrect or assembly issue.
• VOUT_COMMAND setting too high and DAC/servo moved output above VOUT_OV_FAULT_LIMIT.
• Too short TON_RISE, causing the PSM Manager to prematurely soft connect during the voltage ramp.

Remedies and Workarounds

Here are some experiments you can try to narrow things down:

• Increase VOUT_OV_FAULT_LIMIT (or decrease VOUT_COMMAND) to see if the problem goes away
• Set VOUT_OV_FAULT_RESPONSE to deglitched and increase deglitch interval to see if problem goes away
• Lower the VOUT_UV_FAULT_LIMIT and see if the problem goes away

Other Debugging Tips

With an OV fault, it's best to be safe and look at the signals with an oscilloscope.  Do the following:

• Trigger the scope on the falling edge of the ALERTB signal, and 
• Look at VSENSE pins at the IC, and 
• VIN for the offending channel (or other signals of interest)

The ALERTB signal will be pulled low by the IC at the time of the fault, indicating the time of the fault.