An 85%-Efficiency Fully Integrated 15-Ratio Recursive Switched-Capacitor DC-DC Converter with 0.1-to-2.2V Output Voltage Range

📋 论文概要

本文提出了一种全集成递归开关电容DC-DC转换器，支持15个电压转换比率，效率高达85%，输出电压范围0.1-2.2V。解决了传统开关电容转换器仅在离散比率下高效、以及需要外部电感或线性调节导致尺寸或损耗增加的问题。

💡 主要创新点

• 采用递归开关电容结构，实现15个电压转换比率，覆盖宽输出电压范围。
• 通过优化开关和电容尺寸，在全集成条件下达到85%的高效率。
• 无需外部电感，实现小型化动态电压缩放（DVS）解决方案。

🏷 关键词

📄 原文摘要

The growing demand for both performance and battery life in portable consumer electronics requires SoCs and power management circuits to be small, efficient, and dynamically powerful. Dynamic voltage scaling (DVS) can help achieve these goals in load circuits, though generally at the expense of increased DC-DC converter size (through use of external inductors) or loss (through linear regulation). While switched-capacitor (SC) DC-DC converters can offer conversion in small fully integrated form factors [1-5], their efficiencies are only high at discrete ratios between the input and output voltages. To increase an SC converter efficiency across its output voltage range, multiple conversion ratios can be utilized to realize a finer output voltage resolution. For instance, many converters employ a small handful of conversion ratios [1-4]. However, more conversion ratios are generally necessary to achieve high efficiency across the

👥 作者与机构

Loai G. Salem, Patick P. Mercier

University of California, San Diego, La Jolla, CA