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AN-1484Designing A SEPIC Converter - TI.com

Cout 8 V ripple x 0.5 x f sw IOUT x D IL1 (peak) + IL2 (peak) V ripple x 0.5 ESR 7 (AC) Q1 OFF V ESR Q1 ON V OUT V Cout V ripple ICout (rms) = IOUT x V OUT + V D V IN (min) ' V Cs = Cs x f sw IOUT x D max ICs (rms) = IOUT x V OUT + V D V IN (min) www.ti.com SEPIC Coupling Capacitor Selection 6 SEPIC Coupling Capacitor Selection The selection of SEPIC capacitor, Cs, depends on the RMS …

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