Digital Control Techniques for Power Converters using dsPIC® DSC

 Abstract

This self-paced module investigates some standard control techniques used in power converter designs. A review of the dsPIC® DSC device architecture, basic theory of PID (Proportional Integral Derivative Controllers), and the implementation of a PID controller in a dsPIC DSC is covered. This module also covers the buck converter on the PICtail™ Buck Boost Board using voltage mode, average current mode and peak current mode control loops. Soft start and sequencing, which manage the switching transients of the converter outputs, are also described. The code and execution flow as well as control techniques for each of these modes are analyzed and practiced with downloadable exercises. The class ends with a brief summary of support tools, code examples, and application notes.

buck-boost-converter-pictail-plus-AC164133.png
Click image to enlarge.

After this module, you will be able to:

  • Design a voltage mode control loop in a dsPIC® DSC
    • Implement a PID controller in the dsPIC DSC
    • Implement fully programmable soft start and sequencing
  • Design a peak current mode control loop in a dsPIC DSC
  • Design an average current mode control loop in a dsPIC DSC

Prerequisites: Digital Power Converter Basics using dsPIC33 Digital Signal Controllers self-paced module.

Author:

Cammen Chan
Microchip Technology Inc.

20th Annual
Microchip MASTERs Conference 2016
Register now - Deadline: July 29

JW Marriott Desert Ridge Resort-Phoenix, AZ

© 2016 Microchip Technology, Inc.
Information contained on this site regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.