Some news!
I received the last parts Wednesday (at last), yesterday I made one board, first time reflowing anything else than an LED but it turned out well :
This morning I tested the driver, only the hardware by bypassing the MCU :
And it works! The output voltage/current is stable, here is a quick output voltage waveform with the scope I just bought :
The only issue is that I got less current than expected, with 44mV ref voltage and 9.2mΩ (7+mosfet resistance) I should get ~4.78A, but I only get ~3.7A. After a quick check the real ref is ~43mV and the mosfet resistance is ~4.4mΩ which explains the difference. Swapping the resistance with a 5mΩ one should do the trick, but I’m worried about the ON resistance variation of the mosfet between parts.
Next I need to adapt Anduril for it.