JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisite

Power Electronics

Course Objectives:

• The introduction of concept of switched mode power supply with both D.C. and A.C. outputs.
• To elaborately study the working of switched mode topologies including resonant power suppliers.
• To have the knowledge of their importance and applications in various fields.

Course Outcomes

After completion of this course the students are able to understand the

concepts and principle of operation of various types of switched mode power supply systems for both D.C. and A.C. outputs.

UNIT - I

Switched Mode Power Conversion: Introduction to Switched Mode Power Supply, Linear DC to DC Power converters, Non- Idealities in reactive elements, Design of Inductors, Design of Transformers- Copper loss, Power factor, Non-isolated topologies, Isolated topologies, Quasi-resonant zero-current/zero-voltage switch Operating principle of Non- Isolated DC to DC power Converters (Buck, Boost, Buck-Boost, and Cuk) Equivalent circuit model of the non-isolated DC-DC converters. Isolated converters (forward, Flyback).

UNIT - II

Multiple Output Flyback Switch Mode Power Supplies: Introduction, operating Modes, operating principles, Direct off line Flyback Switch Mode Power Supplies, Flyback converter, snubber network, Problems.

UNIT - III

Using Power Semiconductors in Switched Mode Topologies: Introduction to Switched Mode Power Supply Topologies, The Power Supply Designer’s Guide to High Voltage Transistors, Base Circuit Design for High Voltage Bipolar Transistors in Power Converters, Isolated Power Semiconductors for High Frequency Power Supply Applications

UNIT - IV

Rectification: Explanation, Advantages and disadvantages, SMPS and linear power supply comparison, Theory of operation , Input rectifier stage, Inverter stage, Voltage converter and output rectifier, Regulation, An Introduction to Synchronous Rectifier Circuits using Power MOS Transistors

R16 B.TECH EEE.

UNIT - V

Switch mode variable power supplies: Introduction, variable SMPS techniques, operating principles, practical limiting factors, Efficiency and EMI Applications. Resonant Power Supplies: An Introduction to Resonant Power Supplies, Resonant Power Supply Converters - The Solution for Mains Pollution Problems.

TEXT BOOKS:

• 1. “Keith H. Billings and Taylor Morey”, “Switch Mode Power Supplies”, Tata McGraw-Hill Publishing Company, 3rd edition 2010.
• 2. “Robert W. Erickson”, “Switch Mode Power Supplies”, Springer, 2nd edition 2001.

REFERENCE BOOKS:

• 1. “Sanjaya Maniktala”, “Switching Power Supplies A-Z”, Elsevier, 2nd Edition 2012
• 2. “Steven M. Sandler”, Switch Mode Power Supplies, Tata McGraw Hill, 1st Edition 2006 R16 B.TECH EEE.