A Simple Magnetic Design Procedure Determines Core Size

Focus:

Applying concepts from previous magnetics design articles about maximizing magnetic power density in a magnetic component, this article explains how to choose the core material and core size for a magnetic component that maximizes core transfer-power density. After explaining the origins of this design procedure in a previously derived transfer power equation and its steps, the author discusses an example of its use in the design of a magnetic component—the coupled inductor for a Ćuk power-transfer circuit. For those who read the author’s previous work, “A Simplified Winding Design Procedure For Transformers,” this article represents a sort of “pre-quel” in that the winding design article assumed the core had already been selected. So designers looking for a simplified approach to the overall design of a complete magnetic component may begin here.

What you’ll learn:

• How to determine core size of a magnetic component (transformer, inductor, or coupled inductor)

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Author & Publication:

Dennis Feucht, Innovatia Laboratories, Cayo, Belize, How2Power Today, Feb 15 2022

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