Paper Info
Title
A 4.5V-Input 0.3-to-1.7V-Output Step-Down Always-Dual-Path DC-DC Converter Achieving 91.5%-Efficiency with 250mΩ-DCR Inductor for Low-Voltage SoCs
Abstract
This paper presents an always-dual-path (ADP) DC-DC converter that achieves 4.5V-input 0.3-to-1.7V-output buck conversion for battery-powered low-voltage SoCs. Regardless of voltage conversion ratio (VCR), the proposed ADP converter maintains the inductor current constantly to be ×0.5 of the load current, bringing high efficiency with a large DCR of the compact-volume inductor. Seamless dual-power-path formed by two flying-capacitors merits a low ripple. The chip fabricated in 180-nm 5V CMOS obtains an efficiency of 91.5% (84.6%) at a VCR of 0.38 (0.2) even with an inductor DCR of 250mΩ.
Year
DOI
Venue
2021
10.23919/VLSICircuits52068.2021.9492478
2021 Symposium on VLSI Circuits
Keywords
DocType
ISSN
buck conversion,battery-powered low-voltage SoCs,voltage conversion ratio,ADP converter,seamless dual-power-path,CMOS,input-to-output step-down always-dual-path DC-DC converter,DCR inductor,VCR,compact-volume inductor,flying-capacitors,voltage 4.5 V,voltage 0.3 V to 1.7 V
Conference
2158-5601
ISBN
Citations 
PageRank 
978-1-6654-4766-9
0
0.34
References 
Authors
0
6
Name
Order
Citations
PageRank
Jae-Young Ko100.34
Yeunhee Huh283.35
Min-Woo Ko301.35
Gyeong-Gu Kang422.83
Gyu-Hyeong Cho500.68
Hyun-Sik Kim622.21