Fully Integrated Buck Converter with 78% Efficiency at 365mW Output Power Enabled by Switched-InductorCapacitor Topology and Inductor Current Reduction Technique

📋 论文概要

该论文提出了一种全集成降压转换器，采用开关电感-电容拓扑结构，在365mW输出功率下实现了78%的效率，解决了片上电感集成中面积约束和寄生效应导致的效率低下问题。

💡 主要创新点

• 提出开关电感-电容（SIC）拓扑，结合开关电容和电感转换器优势，实现高功率密度和效率。
• 采用全集成设计，无需外部元件，利用标准CMOS工艺实现片上电感和电容的协同优化。

🏷 关键词

📄 原文摘要

power consumption of system-on-chip by providing point-of-load regulation with dynamic voltage scaling [1]. As a core component of a buck converter, an inductor with large inductance and small resistance is desirable for high power efficiency, but on-chip inductor integration is challenging due to silicon-area constraints and parasitic effects. Common techniques to integrate on-chip inductors include using on-die spiral inductors [1-3], package bond wires [4], and magnetic cores [5,6], resulting in inductors on the order of nH with resistances of several hundred mΩ. Switching frequencies approaching 100MHz and beyond are often used to reduce the current ripple of such small inductors [1-6] at the cost of switching loss. A

👥 作者与机构

Nghia Tang1, Bai Nguyen1, Yangyang Tang2, Wookpyo Hong1,

Zhiyuan Zhou1, Deukhyoun Heo1 Washington State University, Pullman, WA HiSilicon, Shenzhen, China 1 2 Fully integrated buck converters can improve performance and reduce the