开关电源基础知识

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Forward and Flyback Circuits.

When discussing SMPS circuits, the different topologies are often referred to as 'Forward' or 'Flyback'
A Feed Forward SMPS circuit will supply energy to the output capacitor when the switching element (transistor) is switched on.
A Flyback SMPS circuit transfers energy (from an inductor) to the output capacitor when the switching element (transistor) is switched off.
The Buck Regulator (or Forward Regulator).