Embed Your Planar Magnetics To Maximize DC-DC Converter Performance (Part 2)

Focus:

In part 2 of this article series, the author continues the design of the main transformer TX1 by estimating the ac copper losses in the PCB windings for TX1. In calculating secondary losses, the author notes the absence of proximity loss as a benefit of planar PCB construction. Following these calculations, the author describes the allocation of layers in the PCB stackup.

What you’ll learn:

• How to design an embedded planar magnetic transformer (calculating ac copper losses)

Notes:

Notes: For parts 1 and 3 of this article series, see the September 2010 and December 2010 issues of How2Power Today. Part 1 describes how to calculate core losses and dc copper losses for TX1, while part 3 describes the design of the bias supply transformer TX3.

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Author & Publication:

Harold Eicher, Champs Technologies, East Setauket, NY, How2Power Today, Oct 22 2010

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