This document introduces the basic knowledge of MOSFET, including the history, structure, characteristics and characteristics of MOSFET
This application note offers a general overview of Power Metal Oxide Semiconductor Field Effect Transistors (MOSFETs). It details the historical development from JFETs to modern power MOSFETs used in applications like SMPS and motor control. The document explains the differences between depletion and enhancement types, as well as lateral versus vertical channel structures.
The forward voltage drop of a MOSFET has a positive temperature coefficient, ensuring current flows equally through devices when they are in parallel.
In high breakdown voltage devices over 200V, the conduction loss of a MOSFET is larger than that of a BJT with the same rating.