Reduce Costs: Use Same Parts for Positive and Negative DC-to-DC Converters

One relatively easy way for manufacturers to reduce the cost of electronic components is by using the same designs or components for disparate applications. The cost savings manifest not only in the obvious bulk procurement of identical parts, but also in minimizing the number of required qualification processes. Qualification is especially critical for the transportation industry—particularly for automobile manufacturers. Usually it is an expensive process involving testing for ruggedness, reliability, and longevity of units.

This article shows how to use the same components—an IC controller and power train—in two very different topologies: a common buck converter and in an inverting buck-boost converter.

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