> Why would a general purpose controller be designed to accept e.g. too high voltage levels? Pragmatic design decisions. My bet is they decided that adding vol

> Why would a general purpose controller be designed to accept e.g. too high voltage levels? Pragmatic design decisions. My bet is they decided that adding voltage regulation was unnecessary since they can limit it via software which they have control. Adding voltage regulation would increase the component count which takes up board space and lengthens the BOM (bill of materials.)