Over-current Protection is a common feature found in most ac/dc and dc/dc converter datasheets. The name seems self-explanatory; it’s a feature that is supposed to protect the power supply in the event of an over current condition. Despite the simplicity of the name, the many ways that it can be implemented leads to a wide variety of behaviors, which if not understood could lead to confusion and possibly selecting the wrong power supply for your application. This presentation will explain the common OCP behaviors, the basics of how they work, and things to keep in mind when selecting a power supply.
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