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- W4361799659 abstract "To realize high efficiency and high power density for resonant switched-capacitor (ReSC) converters, it is critical to have a thorough understanding of the soft-switching mechanism and design the converter appropriately. However, this can be challenging as the soft-switching operation depends on multiple variables and its design difficulty increases quickly with respect to the topology complexity. This article demonstrates a framework for using geometrical state-plane analysis to facilitate ReSC converter design. The methodology is first applied to a basic 2-to-1 ReSC converter and then extended to a new 4-to-1 ReSC converter topology we proposed, herein named a cascaded multiresonant converter. This topology has a reduced component count thanks to a new “switching bus” architecture. However, it comes at a cost, as the converter has multiple resonances within each switching cycle, complicating the soft-switching design. Despite the high circuit complexity, the state-plane analysis neatly provides analytical equations for all state parameters, which are verified by simulations and experiments. Our hardware prototype achieves 6000 W/in <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3</sup> power density at 48-to-12 V conversion and 80 A continuous output. Its peak efficiency reaches 99.02%, and full-load efficiency reaches 97.67%, including gate drive loss. Both the power density and efficiency are superior to the state-of-the-art 48-to-12 V solutions." @default.
- W4361799659 created "2023-04-05" @default.
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- W4361799659 date "2023-09-01" @default.
- W4361799659 modified "2023-09-26" @default.
- W4361799659 title "Geometrical State-Plane Analysis of Resonant Switched-Capacitor Converters: Demonstration on the Cascaded Multiresonant Converter" @default.
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- W4361799659 doi "https://doi.org/10.1109/tpel.2023.3259951" @default.
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