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Switching Power Supplies A - Z, 2nd Edition by Sanjaya Maniktala

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Chapter 7

Optimal Power Components Selection

Having understood the basic concepts behind stress derating and reliability in the preceding chapter, this one focuses on the accurate computation of the actual voltage and current stresses occurring inside a power converter. A lookup reference chart with the voltage stresses on all the power components in all major topologies is presented. Topologies include the half-bridge, full-bridge, push–pull, 2-switch forward, Cuk, Sepic, Zeta, and the active forward clamp. Then, attention turns toward calculating the peak, average, and RMS currents of the key topologies, including both DC–DC and AC–DC converters. Detailed derivations with simplifying formulas for general RMS calculations are included. Finally, ...

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