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Underutilized SEPIC outperforms the flyback topology

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Keywords: SEPIC  flyback  power supply  non-isolated supply 

This article provides a comparison of a SEPIC and flyback power supply with identical requirements. Component stresses for each approach and example stresses are presented for each topology.

When designers are given a set of non-isolated supply specifications where the output voltage falls between the minimum and maximum input voltage, they usually choose the flyback topology over the SEPIC or single-ended primary inductance converter topology.

This is mostly because of lack of familiarity with the SEPIC. However, this may not be the best design solution.

View the PDF document for more information.



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