I have been testing UCD3138PSFBEVM-027 board currently and wanted to do output voltage modifications in it. Currently the EVM is designed to provide 12V output.
I want to bring it down to a lower value (8V or 10V). For this I did few changes in firmware (pmbus_topology: screenshot attached). But this is giving 0V output and D26 and D4 are flickering. The firmware is updated and UV level, nominal voltage and OV level are reflected in fusion studio online software.(screenshot attached).
Kindly let me know what additional changes are required with respect to firmware.
Also ,Kindly let me know if only firmware changes are enough for bringing down the voltage or hardware changes are also required.
As per my understanding for increasing the voltage and power rating, hardware changes are required (due to transformer and many other components and current carrying path constrains). But is the same applicable for lower voltage?