An Overview of Hybrid DC-DC Converters: From Seeds to Leaves

被引：4

作者：

Lu, Yan ^{[1
]}

Huang, Junwei ^{[1
]}

Tong, Zhiguo ^{[1
]}

Hu, Tingxu ^{[1
]}

Zeng, Wen-Liang ^{[1
]}

Huang, Mo ^{[1
]}

Mao, Xiangyu ^{[1
]}

Cai, Guigang ^{[1
]}

机构：

[1] Univ Macau, State Key Lab Analog & Mixed Signal VLSI, Macau, Peoples R China

来源：

IEEE OPEN JOURNAL OF THE SOLID-STATE CIRCUITS SOCIETY | 2024年 / 4卷

基金：

中国国家自然科学基金;

关键词：

Inductors; Topology; Switches; Capacitors; Voltage; Transient analysis; Hybrid power systems; 3-D power delivery for chiplet; buck-boost; buck converter; DC-DC conversion; hybrid converter topology; integrated voltage regulator (IVR); multilevel; multiphase; multiple-output; switchedcapacitor (SC) converter; SWITCHED-CAPACITOR CONVERTER;

D O I：

10.1109/OJSSCS.2023.3334228

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

With the surging demands for higher current at sub-1-V supply level in high-performance digital systems, high-efficiency and high-current-density power converters are essential for system integration. Higher voltage supply buses are emerging for high-current applications to reduce the IR losses on the power delivery networks. Thus, there is a wide voltage gap between the power bus and the digital supply rails at the point of load (PoL). Meanwhile, battery-powered portable or wearable devices favor extremely high-power-density solutions, calling for novel power conversion topologies, which have been the hottest topic in the power management IC area in the past decade. This article reviews the switched-capacitor-inductor (SCI) hybrid dc-dc buck converters from the topology "seeds" to their "leaves." Here, we define six seeds, they are: 1) three-level buck; 2) double-step down buck; 3) inductor-first buck; 4) always-dual-path buck; 5) buck-buck; and 6) multiple-output hybrid buck. We try to analyze and summarize their pros and cons, and to derive the evolution of the hybrid dc-dc converters, with milestone examples. Then, we share our observations, design intuitions, and suggestions to help the researchers and engineers to pick up and design a new SCI hybrid dc-dc converter.

引用

页码：12 / 24

页数：13

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