I recently purchased the TB67H420FTG board and it is working perfectly in a project I am building. As I am fairly new to electronics, I have been making a point of studying the schematics for the boards that I am using. Long story short, I was hoping to get some clarification on the power circuit and back EMF protection on the board.
The schematic shows that that the power circuit contains a Diode (D1) and something else (Q1). Searching for the symbol, makes me think it is a MOSFET, but I wasn’t sure. What is this component, and what purpose is it serving?