Tool/software:
We currently use the LMR51610 in our designs already, it's been working perfectly for 12, 24, and 48VDC input voltages. Recently we have had an application that requires the circuit to start from 60VDC, usually, we have tested the board with startup voltages from 0V to 52VDC with no issues even when we ramped the input voltage to past 62VDC after startup, again with no problem.
The new application has the board start from 60VDC, this instantaneously creates a short to ground within the IC and causes permanent damage.
My questions are:
- What is the startup voltage maximum
- If it is higher than 60VDC what could be the issue
This is a snippet of the power supply section of the cicuit