A High-Stability Emulated Absolute Current Hysteretic Control Single-Inductor 5-Output Switching DC-DC Converter with Energy Sharing and Balancing

📋 论文概要

该论文提出了一种采用模拟绝对电流滞环控制的单电感五输出DC-DC转换器，用于AMOLED显示器。该方法解决了传统电流模式控制中存在的负载依赖稳定性问题。

💡 主要创新点

• 提出模拟绝对电流滞环控制技术，提高多输出转换器的稳定性
• 实现单电感同时提供五个独立输出，减少PCB面积和成本

🏷 关键词

📄 原文摘要

JDA, Daejeon, Korea 1 2 Several types of DC-DC converters for active-matrix organic LED (AMOLED) displays have been introduced to date [1-4]. Single-inductor multiple-output (SIMO) converters with current-mode control have many advantages including reduced PCB space and less cost for mass-production due to the use of only one off-chip inductor to provide many outputs [1,2]. However, a load-dependent stability issue has to be addressed which is due to the output capacitance and an internal integrator with an error amplifier. Recently, in efforts to overcome the stability issue of current-mode control, load-independent control converters have been developed. Although this concept works well, the inductor-current sensing and artificial ramp generation for stability still make the controller complicated [3,4]. In addition, the freewheeling current control converter requires an extra power switch for freewheeling current flow, thereby lowering power efficiency [3]. The vestigial current con

👥 作者与机构

Se-Won Wang1, Gyu-Ha Cho2, Gyu-Hyeong Cho1

KAIST, Daejeon, Korea