Another Look At The Refined Model Of Current-Mode Control

Focus:

The analysis of current-model control in power conversion has a long history, encompassing different approaches that capture different aspects of converter behavior. These different forms of current-loop models have evolved as their developers have attempted to improve their accuracy or completeness. First-generation models by Middlebrook, Macsimović and Erickson were followed by Ridley’s sampled-loop model and then Middlebrook and Tan’s unified model. In a previous article series on peak-current control, the author described the development and evolution of these different current- loop models and how they led to his development of a new model called the refined model of current-loop control. For those not yet familiar with the refined model and those generally curious about modeling of current-mode control, this article offers a summary of the earlier seven-part series.

What you’ll learn:

• How to understand the different models that explain operation of current-mode control in power converters

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Author & Publication:

Dennis Feucht, Innovatia Laboratories, Cayo, Belize, How2Power Today, May 15 2019

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