A 11.7W 9mV/A-Cross-Regulation Single-Inductor TripleOutput Buck Converter Using Unordered Power-Distributive Control for a 2A Load Transient

📋 论文概要

本文提出了一种采用无序功率分配控制的单电感三输出降压转换器，解决了传统时间复用控制需要断续导通模式导致的输出纹波大和功率传输能力低的问题，实现了11.7W输出功率和9mV/A的交叉调节性能。

💡 主要创新点

• 提出无序功率分配控制策略，无需时间复用即可实现多输出独立调节，降低交叉干扰。
• 通过优化功率分配顺序，在连续导通模式下工作，减小输出纹波并提高功率密度。

🏷 关键词

📄 原文摘要

Single-inductor multiple-output (SIMO) converters, capable of providing multiple outputs from just one inductor, are highly favorable in cost- and size-constrained applications such as mobile devices. However, they inherently face cross regulation issues, especially during large load transients. Time-multiplexing control (TMC) combined with a digital non-linear technique is adopted in [1] to address these issues by separating the charging of each output. Nevertheless, the converter needs to operate in discontinuous conduction mode (DCM), resulting in large output ripples and low power delivery. Hence, ordered power-distributive control (OPDC) is widely adopted in SIMO converters [2–5] to reduce output ripples and enhance power delivery. However, it aggravates cross-regulation since all outputs draw energy from the inductor sequentially within one cycle [2]. A crosstalkreduction error amplifier (CREA) is proposed in [3] to reduce cross regulation by

👥 作者与机构

Baochuang Wang, Xiaonan Wu, Lin Cheng

University of Science and Technology of China, Hefei, China