Operation end Modeling of the MOS Transistor, 2/e carefully leads from physical principles to relevant working models of the MOS Transistors device. Models range from the very simple to sophisticated with the connections between models of successive levels clearly identified. Intuitive understanding is provided through extensive discussions.
This is a very good book to understand about the concepts of MOSFETs when applied with voltages. The book features the physics background of the operation of the device. It is highly recommended as a textbook to start with Modeling of MOS Transistor.