A Fast-Transient 3-Fine-Level Buck-Boost Hybrid DC-DC Converter with Half-Voltage-Stress on All Switches and 98.2% Peak Efficiency

📋 论文概要

该论文提出了一种具有快速瞬态响应的3精细电平升降压混合DC-DC转换器，所有开关均承受一半电压应力，实现了98.2%的峰值效率。该设计采用1.8V器件，无需体开关或自举电路，有效节省了芯片面积。

💡 主要创新点

• 提出3精细电平升降压混合拓扑，实现快速瞬态响应和所有开关半电压应力。
• 采用新型驱动电路设计，无需体开关和自举电路，简化了实现并节省面积。
• 通过堆叠驱动器等技巧，在1.8V器件下兼容输入电压，达到98.2%的高峰值效率。

🏷 关键词

📄 原文摘要

Southern University of Science and Technology, Shenzhen, China 1 Figure 8.4.3 exhibits the overall structure of the proposed buck-boost converter including the power stage and control stage. All circuits are implemented using 1.8V devices. All power switches S1 to S7 do not need body-switch or bootstrap circuits, which saves significant silicon area. Switches S1, S2, S4 and S5 are driven by CF1, and S6 is driven by CF2. The stacked pull-up driver (M31 and M32) of S3 are powered by VA & VB, to withstand VIN. The pull-down stacked transistors M33 and M34 are driven by VC and VD. The pulldown driver of S7 is supplied by LDO2 which outputs an internal 2V. 2 Buck-boost DC-DC converter plays an important role in battery-powered devices, as Liion battery outputs 4.2V to 2.8V while high-performance analog circuits require a relatively high supply of 3.3V. More importantly, an envelope supply modulator needs a

👥 作者与机构

Shuangxing Zhao1,2, Chenchang Zhan2, Yan Lu1

University of Macau, Macau, China