A new method to improve the dynamic response of Power Factor Correctors (PFC) is described in this paper. The method is based on the use of a new very highly efficient post-regulator, called a Series-Switching Post-regulator. This newPost-regulator exhibits very high efficiency due to the fact that only a part of the total power undergoes a power conversion process. The proposed Post-regulator can be used with any PFC topology (either with or without a transformer) with nomodifications in the topology, and can be easily protected against short-circuits.
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