Скачать или смотреть How MOSFET Channel Conductivity Works | Channel Conductivity Explained | Lecture #7

Master the physics of MOSFETs in Lecture #7 of our VLSI Design series!

In this session, we answer the fundamental question: How does MOSFET Channel Conductivity work? We go beyond the basics to look at the actual movement of charge carriers and how the "Channel" behaves under different bias conditions.

📘 What You Will Learn in This Lecture:

The MOS Capacitor Model:

• Why the Gate-Oxide-Substrate structure behaves like a parallel plate capacitor and how to calculate its capacitance.

Electric Field Dynamics:

• We visualize the generation of the vertical electric field and explain its direction.

Threshold Voltage:

•A deep dive into the "minimum voltage" required to achieve strong inversion and the factors that influence it.

Channel Enhancement:

• How the "Overdrive Voltage" ($V_{gs} - V_t$) acts as the effective control voltage that enhances the channel's charge density.

The Role of Vds:

• Understanding how the Drain-to-Source voltage interacts with the gate field to drive the Drain Current (iD).

Current Dependency:

• A first look at how $i_D$ depends on both the available carriers (controlled by Vgs - Vt and the driving force (provided by Vds.

🚀 About This Series:

This video is part of the VLSI Design Fundamentals: From Transistors to Concepts course.

• Whether you are a student preparing for university exams or
• An aspiring engineer prepping for a VLSI interview (Intel, AMD, NVIDIA, etc.)
• This series is built for you.

Watch the Full Playlist here: 👉

   • VLSI Design Fundamentals : From Transistor...  

🕒 Timestamps:
0:20 - Channel Induced!!!
1:12 - MOSFET as a Capacitor!!! How???
3:35 - How does the Electric Field generate in a MOSFET???
5:46 - What is Threshold Voltage (Vt)?
7:50 - Why is it named Enhancement Type MOSFET???
11:50 - Application of Vds
15:40 - Current Flow (iD) & its dependencies
18:06 - iD vs Vds Plot
22:30 - Why Channel is so so Important???

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