Examination of High-Q-factor Conductor-embedded Planar Transformer with Magnetic Flux-Path Control Technology
2020
To improve the power density of switching power supplies, a small transformer with low loss is required. Increasing the drive frequency is an effective strategy for miniaturizing the transformer; however, this strategy increases the losses. In this article, we investigate strategies to reduce the losses arising from conductor-embedded planar transformers using magnetic flux-path control (MPC) technology. The ac resistance of a conductor-embedded planar transformer that uses the MPC technology is less than the ac resistance of a conventional conductor-embedded transformer. In this research, we prove that the ${Q}$
-factor of our proposed transformer is superior to the ${Q}$
-factor of the conventional transformers.
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