- Level Foundation
- Duration 19 hours
- Course by University of Colorado Boulder
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Offered by
About
This course can also be taken for academic credit as ECEA 5702, part of CU Boulder's Master of Science in Electrical Engineering degree. This course teaches how to design a feedback system to control a switching converter. The equivalent circuit models derived in the previous courses are extended to model small-signal ac variations. These models are then solved, to find the important transfer functions of the converter and its regulator system. Finally, the feedback loop is modeled, analyzed, and designed to meet requirements such as output regulation, bandwidth and transient response, and rejection of disturbances. Upon completion of this course, you will be able to design and analyze the feedback systems of switching regulators. This course assumes prior completion of courses Introduction to Power Electronics and Converter Circuits.Modules
Introduction
1
Discussions
- Introduce Yourself
AC Equivalent Circuit Modeling
5
Videos
- Sect 7.1 Introduction to AC Modeling
- Sects 7.2.1-4 Averaged AC Modeling
- *Sect 7.2.2 Discussion of Averaging
- Sect 7.2.5 Perturbation and Linearization
- Sects 7.2.6-8 Construction of Equivalent Circuit
Additional Points
3
Videos
- Sect 7.6 Modeling the Pulse-Width Modulator
- Sect 7.5 The Canonical Model
- Sect7.3 State-Space Averaging
Assignment
1
Readings
- Homework 1 Materials
1
Quiz
- Homework Assignment 1: Chapter 7
Design-Oriented Analysis
1
Videos
- 8.0 Introduction to Design-Oriented Analysis
Review of Frequency Response and Bode Plots
6
Videos
- 8.1 Review of Bode Diagrams: Pole
- 8.1.2 Other Basic Terms
- 8.1.5 Combinations
- 8.1.6 Second-order Response: Resonance
- 8.1.7 The Low-Q Approximation
- 8.1.8 Analytical Factoring of Higher-Order Polynomials
Assignment
1
Readings
- Homework 2 Materials
1
Quiz
- Homework Assignment 2: Ch. 8, Transfer Functions
Converter Transfer Functions
5
Videos
- 8.2 Analysis of Converter Transfer Functions
- 8.2.2 Transfer Functions of Basic Converters
- 8.3.1 Graphical Construction of Impedances
- 8.3.3 Graphical Construction of Parallel and More Complex Impedances
- 8.3.5 Graphical Construction of Converter Transfer Functions
Assignment
1
Readings
- Homework 3 Materials
1
Quiz
- Homework Assignment 3: Construction of Transfer Functions
Feedback Basics
4
Videos
- 9.1-2 Introduction
- 9.3 Construction of Closed-loop Transfer Functions
- 9.4.1 Stability
- 9.4.2 Phase Margin vs. Closed-loop Q
Controller Design
4
Videos
- 9.5 Regulator Design
- 9.5.4 Design Example
- Op-amp Compensator Design
- 9.5.5 Another Example: Point-of-Load Regulator
Assignment
1
Readings
- HW#4 Materials
2
Quiz
- Homework Assignment 4 (Part 1): Feedback
- Homework Assignment 4 (Part 2): Closed-Loop Simulation

Instructor
Dr. Robert Erickson