This article explores the merits of a variety of hybrid-resonant switched-capacitor (SC) dc–dc converters under strict size constraints on passive components (flying capacitors and inductors). Topologies are compared using a “minimum power loss” figure of merit (FOM) that captures conduction- and frequency-dependent losses in active semiconductor devices and losses related to passive components as they scale with size and relative voltage rating. Similar to past work on pure SC converters, the method leverages a charge-multiplier approach and is used to show the impact of area or volume constraints on inductors and capacitors. Building on past work, considerations for treating both “direct-” and “indirect-” conversion architectures are provided, as well as treatment of converters that require multiple inductors. Common topologies are compared using the generalized FOM under different scaling scenarios; general trends are validated using an experimental prototype.

中文翻译：

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具有无源元件尺寸限制的混合谐振开关电容器 DC-DC 转换器的分析和比较

本文探讨了各种混合谐振开关电容器 (SC) dc-dc 转换器在无源元件（飞跨电容器和电感器）的严格尺寸限制下的优点。使用“最小功率损耗”品质因数 (FOM) 对拓扑进行比较，该品质因数捕获有源半导体器件中与传导和频率相关的损耗以及与无源元件相关的损耗，因为它们随尺寸和相对额定电压而变化。与过去在纯 SC 转换器上的工作类似，该方法利用电荷倍增器方法，用于显示面积或体积限制对电感器和电容器的影响。以过去的工作为基础，提供了处理“直接”和“间接”转换架构的注意事项，以及处理需要多个电感器的转换器。在不同的缩放场景下使用广义的 FOM 比较常见的拓扑结构；使用实验原型验证总体趋势。