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49DC-DC Converter Design and Magnetics
regulation. We will discuss this issue in greater detail below—in particular, whether this
is e
ven a concern to start with! However, assuming for now that it is, it then seems that
it may actually make sense to use an inductor rated for 3 A continuous current, with an
I
SAT
rating of 5 A (provided such an inductor is freely available, and cheap). Of course,
alternatively, we could just pick a standard “ 5 A inductor ” (for the 3 A application),
and thereby we would certainly avoid inductor saturation under all conditions (and
the consequent likelihood of switch destruction). But we ...