Properly drive MOSFETs (or IGBTs) is not an easy task. When I started this project, I just realized obvious problems with the RAMPS board (trace width, polyfuse, lack of cooling, etc.). I learned lot since. This is why I changed the title. Now I want to document (previously built), and create new MOSFET driving circuits. Simple drivers, half bridges, full bridges.
High Current N-Channel MOSFET, logic level
Current Shunt Monitor
I started working on this project. The first version of the schematics is published on the github.
a little problem with the current sensing amplifier and therefore some
modifications are still come: I want to make it a little bit more
versatile therefore I plan to add INA193-INA195 also as an option. This
ones are not able to work from 48V supply so in addition I'll add a
zener based regulator as an option.