Hi Ti team,
I have build a board with TPS40428 and 2x CSD95378B for evaluation, using 12V input to provide 1V output, design reference from PMP9444
but now my system have 2 issues
1/ OVF are easily triggered when enable TPS40428
2/ Sometimes TPS40428 can operate normal, but it usually shut down within 5min
I have probed Vout and FB found they usually give a lot of ripples before OVF shutdown
Should I change the R/C value in the loop compensation circuit?
Thanks a lot.
Alex
/cfs-file/__key/communityserver-discussions-components-files/196/TPS40428_5F00_output_5F00_OVF.pdf