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JSSC 2024第8期Power ManagementBuck Converter

A 961 Efficiency Single-Inductor Multiple-Output SIMO Buck Converter With 21-Ans

提出一种高效单电感多输出降压转换器，通过非线性控制和混合数字LDO提升性能
2.1 A/ns瞬态处理能力，2.2 A最大电流容量，96.1%峰值效率
单电感多输出降压转换器非线性控制混合数字LDO效率提升
▸基于比较器的“Buffet-Like”双采样非线性控制增强环路响应
▸混合数字LDO（HLDO）抑制电压跌落
▸频率跳跃和自举NMOS输出开关提高效率
Abstract
To overcome the limitations of transient handling capability, current capacity, power efficiency, and current density in existing single-inductor multiple-output (SIMO) converters, this article presents: 1) loop response enhancement by the fully comparator-based “Buffet-Like” dual-sampling non-linear control; 2) voltage droop suppression by the hybrid digital LDO (HLDO) attached to each output; 3) efficiency enhancement by frequency hopping and bootstrapped N-type MOSFET (NMOS) output switches;