ABSTRACTWhen designing with switching regulators, application requirements determine howmuch input an output capacitance is needed. There are a number of key concernswhich effect your selection. The electrical performance requirements of your designplay a big part in determining the amount of capacitance required. The transientrequirements of your system are very important. The load transient amplitude, voltagedeviation requirements, and capacitor impedance each affects capacitor selection.Other important issues to consider are minimizing PCB area and capacitor cost.When selecting input and output capacitance each design has specific requirementswhich much be addressed. System requirements set hard limits for a design.Depending on what you are trying to accomplish, the amount and type of capacitancecan vary.
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