A Four-Phase Hybrid Step-UpDown Converter With RMS Inductor Current Reduction and Delay-Based Zero-Current Detection
- Authors
- Park, Inho; Maeng, Junyoung; Jeon, Jinwoo; Kim, Hyunjin; Kim, Chulwoo
- Issue Date
- 4월-2022
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Inductors; DC-DC power converters; Topology; Switches; Video recording; Detectors; Delay lines; Continuous output delivery current; hybrid buck-boost converter; multiphase dc-dc converter; rms inductor current reduction; zero-current detector (ZCD)
- Citation
- IEEE TRANSACTIONS ON POWER ELECTRONICS, v.37, no.4, pp.3708 - 3712
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON POWER ELECTRONICS
- Volume
- 37
- Number
- 4
- Start Page
- 3708
- End Page
- 3712
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/136484
- DOI
- 10.1109/TPEL.2021.3120988
- ISSN
- 0885-8993
- Abstract
- In this letter, a four-phase hybrid step-upx002F;step-down dcx2013;dc converter with a delay-based zero-current detector (ZCD) is proposed. The proposed power stage operates in step-up or step-down mode depending on the target output voltage. It utilizes hybrid switched-inductor-capacitor and dual-path topologies with multiphase operation to reduce conduction loss due to the dc resistance of the inductor by reducing the rms inductor current (<italic>I<sub>L</sub></italic>). The delay-based ZCD determines the zero-current point of <italic>I<sub>L</sub></italic> with a five-bit binary signal to compensate for the propagation delay between the control and the output signals of the driver. The system is fabricated using 180-nm CMOS technology. The power density is 1.838x00A0;Ax002F;mm(2), and the peak efficiency is measured at 89.49x0025; and 86.83x0025; in the step-down and step-up mode, respectively, with a load current range of up to 2x00A0;A.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.