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Current-Mode Control
  • Level Professional
  • المدة 14 ساعات hours
  • الطبع بواسطة University of Colorado Boulder
  • Offered by

عن

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

الوحدات

Introduction to Current-Mode Control

    • 1 Readings
    • 1 Discussion
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1 Discussions

  • Introduce Yourself

1 Readings

  • Introduction to the Course

Introduction to Peak Current-Mode Control

    • 1 Videos
    • 1 Readings
    • 1 Quiz
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1 Videos

  • Introduction to Peak Current-Mode Control

1 Readings

  • MATLAB and LTspice examples

1 Quiz

  • Practice: Introduction to Peak Current-Mode Control

Simple Model for Peak Current-Mode Controlled Converters

    • 3 Videos
    • 1 Readings
    • 1 Quiz
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3 Videos

  • Simple Approximate Model
  • Small-signal Model Based on Simple Approximation
  • Design Example: Synchronous Buck POL Converter

1 Readings

  • PI Compensator: Op-Amp Implementation

1 Quiz

  • Practice: Peak Current-mode Controlled POL Regulator

Stabilization Using Artificial Ramp

    • 3 Videos
    • 1 Quiz
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3 Videos

  • Oscillation for D > 0.5
  • Stabilization with Addition of an Artificial Ramp
  • Design Example Revisited: Inclusion of Artificial Ramp

1 Quiz

  • Practice: Slope Compensation

Graded Quiz: Peak Current-Mode Control, Simple Model

    • 1 Quiz
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1 Quiz

  • Peak Current-Mode Control, Simple Model

More Accurate Modeling of Peak Current-Mode Control

    • 1 Videos
    • 1 Quiz
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1 Videos

  • More Accurate Average Model

1 Quiz

  • Practice: More Accurate Large-Signal Averaged Model

Average Circuit Modeling and Simulations

    • 2 Videos
    • 1 Quiz
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2 Videos

  • Average Spice CPM Subcircuit
  • Design Verification Using Average Circuit Simulations

1 Quiz

  • Practice: Averaged Circuit Simulation

Small-signal AC modeling

    • 4 Videos
    • 1 Quiz
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4 Videos

  • Small-signal AC Equivalent Circuit Models
  • Transfer Functions of CPM Controlled Converters
  • Analysis Example: CPM Controlled Boost Converter
  • Comparison of Frequency Responses of Duty-cycle and Current-mode Controlled Converters

1 Quiz

  • Practice: More Accurate Small-Signal Model

Graded Quiz: Peak Current-Mode Controlled Voltage Regulator

    • 1 Quiz
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1 Quiz

  • Peak Current-Mode Controlled Voltage Regulator

Motivation for High-Frequency Modeling of Current-Mode Controlled Converters

    • 1 Videos
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1 Videos

  • Motivation for Modeling of High-Frequency Effects

Sampled-Data Modeling of Switching Converters

    • 3 Videos
    • 1 Quiz
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3 Videos

  • Pulse-Width Modulator as a Sampler
  • Overview of Sampled-Data Systems
  • Sampled-Data Modeling of Switching Converters

1 Quiz

  • Practice: Introduction to Sampled-Data Modeling

High-Frequency Modeling of Peak Current-Mode Controlled Converters

    • 6 Videos
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6 Videos

  • Introduction to Sampled-Data Modeling of Peak Current-Mode Controlled Converters
  • Development of Sampled-Data Model
  • Frequency Responses of Sampled-Data Models
  • 1st Order Approximation
  • 2nd Order Approximation
  • Summary and Conclusions

Graded Quiz: High-Frequency Effects in Peak Current-Mode Controlled Converters

    • 1 Quiz
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1 Quiz

  • High-Frequency Effects in Peak Current-Mode Controlled Converters

Average Current-Mode Control

    • 2 Videos
    • 1 Quiz
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2 Videos

  • Introduction to Average Current-Mode Control
  • Transfer Functions of Average Current-mode Controlled Converters

1 Quiz

  • Practice: Averaged Current-Mode Control, Transfer Functions

Modeling and Design of Current and Voltage Control Loops

    • 4 Videos
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4 Videos

  • Design Example: ACM Controlled Boost dc-dc Converter
  • Design Verification by Average Circuit Simulations
  • Design of the Voltage Control Loop
  • Design Example: ACM Controlled Boost dc Voltage Regulator

Graded Quiz: Average Current-Mode Control

    • 1 Quiz
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1 Quiz

  • Average Current-Mode Control
Dr. Dragan Maksimovic
Instructor

Dr. Dragan Maksimovic