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Würth-Slide11

In order to design an efficient SEPIC converter, it is crucial to design the right inductor into a circuit. It is best to do it with a practical example: The SEPIC converter, in the case of Würth, has a flexible input of 5-24V and needs to deliver a stable 12V output. The current output is 0.7A with a calculated ripple of 20%. Of course, there are always 2 ways to calculate the inductor for the SEPIC converter. First is to calculate the formula of an inductor for switching regulators. Second, Würth Elektronik recommends calculating the SEPIC converter in the Inductor Selector Calculation Tool for DC/DC Converters, this process is shown in the next slides.

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