TIDUET3 Design guide

TIDUET3 February 2021

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2.4.1.7 Output Capacitor

The value of the output capacitor is determined by two factors. One is that the value must be large enough to provide the required holdup time. The other is that the value must be large enough to keep the ripple at twice the line frequency within the required limits. The holdup time required in this design is 20 ms. Substituting the known values in Equation 10, the minimum Cout is:

Equation 10.