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Do designers make use of a pie filter or does a simple decoupling scheme using say, 0.1uF and 22uF Caps, work sufficiently?

April 26, 2017decoupling designers filter Pie Scheme simple

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Do designers make use of a pie filter or does a simple decoupling scheme using say, 0.1uF and 22uF Caps, work sufficiently?

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Either could work, so long as the total decoupling capacitance is provided. Our general guideline is to decouple power entering the board with .1 and 10uF caps and again for safety at the four corners of the bridge IC with .1, .01, and 10uF caps.