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A 12/24 V-Input HV-LV-Separated Hybrid SC PoL Converter With 355 mW/mm3Power Density at 3 A Load Current and 15.2 mm3Power Passives
Zhang, Xiongjie1; Ma, Qiaobo1; Zhao, Anyang2; Jiang, Yang1; Law, Man Kay1; Jiang, Junmin3; Takamiya, Makoto4; Martins, Rui P.5,6; Mak, Pui In1
2023-12-01
Source PublicationIEEE Transactions on Power Electronics
ISSN0885-8993
Volume38Issue:12Pages:15109-15114
Abstract

This letter presents a high-power-density point-of-load dc-dc converter for 12/24 V input applications, using the proposed high voltage-low voltage separated hybrid switched-capacitor (SC) topology. By incorporating inductors between the SC networks in HV/LV domains, the design achieves reduced inductor dc current (IL,DC) at small voltage conversion ratios (VCRs), optimized switching and conduction losses, and extended duty ratio range, enabling the use of small-sized inductors with higher dc resistance and resulting in a compact system volume. LV switches handle most of the current conduction, reducing switching losses and silicon area for higher on-chip power density. The fabricated converter, using a 180-nm BCD process, generates 0.8-1.8 V output from 12/24 V inputs with a 3-A maximum load. Measured results show total IL,DC of 1.2 A at VCR 0.075 and 2 A load. The converter achieves a peak power density of 355 mW/mm3 with a power passive volume of 15.2 mm3. Peak efficiencies are 85% at 12 V input and 84.2% at 24 V input.

KeywordDc-dc High Step-down Hybrid Inductor Current Reduction Power Density Switched-capacitor (Sc)
DOI10.1109/TPEL.2023.3314287
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:001095310200029
PublisherInstitute of Electrical and Electronics Engineers Inc.
Scopus ID2-s2.0-85171562518
Fulltext Access
Citation statistics
Document TypeJournal article
CollectionINSTITUTE OF MICROELECTRONICS
Faculty of Science and Technology
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorJiang, Yang
Affiliation1.University of Macau, State Key Laboratory of Analog and Mixed-Signal VLSI, IME, Department of ECE/FST, Macao, 999078, Macao
2.University of Macau, IME, State Key Laboratory of Analog and Mixed-Signal VLSI, Macao, 999078, Macao
3.Southern University of Science and Technology, Department of Electronic and Electrical Engineering, Shenzhen, 518055, China
4.University of Tokyo, Institute of Industrial Science, Tokyo, 153-8505, Japan
5.University of Macau, State Key Laboratory of Analog and Mixed-Signal VLSI, IME, Department of ECE/FST, Macau, 999078, Macao
6.Universidade de Lisboa, Lisbon, 1649-004, Portugal
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Zhang, Xiongjie,Ma, Qiaobo,Zhao, Anyang,et al. A 12/24 V-Input HV-LV-Separated Hybrid SC PoL Converter With 355 mW/mm3Power Density at 3 A Load Current and 15.2 mm3Power Passives[J]. IEEE Transactions on Power Electronics, 2023, 38(12), 15109-15114.
APA Zhang, Xiongjie., Ma, Qiaobo., Zhao, Anyang., Jiang, Yang., Law, Man Kay., Jiang, Junmin., Takamiya, Makoto., Martins, Rui P.., & Mak, Pui In (2023). A 12/24 V-Input HV-LV-Separated Hybrid SC PoL Converter With 355 mW/mm3Power Density at 3 A Load Current and 15.2 mm3Power Passives. IEEE Transactions on Power Electronics, 38(12), 15109-15114.
MLA Zhang, Xiongjie,et al."A 12/24 V-Input HV-LV-Separated Hybrid SC PoL Converter With 355 mW/mm3Power Density at 3 A Load Current and 15.2 mm3Power Passives".IEEE Transactions on Power Electronics 38.12(2023):15109-15114.
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