Dual-Source Single-Inductor 0.18µm CMOS Charger-Supply with Nested Hysteretic and Adaptive On-Time PWM Control

📋 论文概要

本文提出了一种采用0.18µm CMOS工艺的双源单电感充电器-电源，用于能量收集应用。通过嵌套迟滞和自适应导通时间PWM控制，实现从两个输入源（如太阳能电池和压电换能器）高效地为输出负载供电，并支持0-30mA负载电流。

💡 主要创新点

• 首次提出双源单电感架构，通过一个电感器同时支持两个不同能量源的输入，减小了体积和成本。
• 采用嵌套迟滞控制与自适应导通时间PWM相结合的控制策略，在宽负载范围内保持高效率。
• 设计了零电流检测电路（CPIOZ）以实现电感电流过零关断，避免反向电流损耗。

🏷 关键词

📄 原文摘要

zero to 30mA. Afterwards, SES and SE open and SDE and SO close to drain LO into vO. SDE then opens and, if GHV senses that vO still needs power, vSAW starts ramping and SPE closes to energize LO from vPS to vO. When vSAW falls below GHV’s vG, SPE opens and SDE closes to deplete LO into vO. SDE and SO then open when CPIOZ in Fig. 23.4.3 senses that LO’s iL is nearly zero, after which point all other switches remain open until the next fCLK cycle. Georgia Institute of Technology, Atlanta, GA A major challenge with emerging microsensors, biomedical implants, and other portable devices is operational life, because tiny batteries exhaust quickly. And even though 1g fuel cells store 5 to 10× more energy than 1g Li-ion batteries, fuel cells supply 10 to 20× less power [1]. This means fuel cells last longer with light loads and Li-ion batteries output more power across shorter periods. Therefore, when the peak power is far greater than the average power, which, for

👥 作者与机构

Suhwan Kim, Gabriel A. Rincón-Mora, LO from vES to ground across τEN’s 1.2μs pulsewidth to raise LO’s current iL from