App note: Understanding the output current capability of DC-DC buck converters
Here’s a tutorial on output current capability of DC-DC buck converters that output a lower voltage from an input voltage. The article outlines the theory of buck converters, and how to calculate output current:
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Due to the widespread availability of highly integrated DC-DC switchmode converter devices, system design engineers no longer have to put much effort into the design of low-power converters for many applications. A little bit of analysis, however, can allow the system designer to make sure that an IC switching regulator is being utilized to its full capability.