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Totem-Pole PFC Reliability and Performance Improvement With Advanced Controls

October 14, 2022 by Zhong Ye

Totem-pole power factor correction (PFC) is a simple and highly efficient topology. It is being widely used in high-density and high-efficiency power supply design. However, engineers still face many design challenges, including PFC current reversing prevention at input voltage drop, lightning surge protection, current harmonic reduction, and ac crossover current spike elimination. These challenges are not closely related to each other and there is no single control that can solve all the design issues. This article reviews the main design challenges and provides comprehensive solutions to these issues. Most of the solutions are novel or are used for the first time in PFC control. These solutions are integrated into the industry’s first continuous conduction mode (CCM) totem-pole PFC analog controller IVCC1102 [1] . A 2.5 kW SiC-based totem-pole PFC prototype [1] is built to demonstrate the robustness and performance improvement with the proposed solutions.
For more about this article see link below.
https://ieeexplore.ieee.org/document/9907854
For the open access PDF link of this article please click here.

Filed Under: Past Features Tagged With: Harmonic analysis, Lightning, Pulse width modulation, Reactive power, Reliability engineering, Surge protection, Switches

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