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University of Colorado Boulder

Current-Mode Control

University of Colorado Boulder via Coursera

Overview

This course can also be taken for academic credit as ECEA 5708, part of CU Boulder’s Master of Science in Electrical Engineering degree.

This is Course #4 in the Modeling and Control of Power Electronics course sequence. The course is focused on current-mode control techniques, which are very frequently applied in practical realizations of switched-mode. Practical advantages of peak current mode control are discussed, including built-in overcurrent protection, simpler and more robust dynamic responses, as well as abilities to ensure current sharing in parallel connected converter modules. For peak current-mode controlled converters, slope compensation, and high-frequency effects are discussed in detail. Upon completion of the course, you will be able to understand, analyze, model, and design high-performance current-mode controllers for dc-dc power converters, including peak current-mode controllers and average current-mode controllers.

We strongly recommend students complete the CU Boulder Power Electronics specialization as well as Course #1 (Averaged-Switch Modeling and Simulation) before enrolling in this course (the course numbers provided below are for students in the CU Boulder's MS-EE program):

● Introduction to Power Electronics (ECEA 5700)
● Converter Circuits (ECEA 5701)
● Converter Control (ECEA 5702)
● Averaged-Switch Modeling and Simulation (ECEA 5705)

After completing this course, you will be able to:

● Understand the operating principles and benefits of current-mode control for dc-dc converters
● Model and design peak current-mode controlled dc-dc converters
● Model and design average current-mode controlled dc-dc converters
● Use computer-aided tools and simulations to verify current-mode controlled dc-dc converters

Syllabus

  • Peak Current-Mode Control: Simple Model
    • Introduction to peak current-mode control, simple model, and the need for slope compensation
  • Peak Current-Mode Control: More Accurate Model
    • More accurate averaged model, averaged circuit simulations, and design of control loops
  • High-Frequency Effects in Peak Current-Mode Control
    • Introduction to the sampled-data nature of switching converters and high-frequency effects in peak current-mode controlled converters
  • Average Current-Mode Control
    • Averaged current-mode control and design of current and voltage control loops

Taught by

Dr. Dragan Maksimovic

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