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A 96.7%-Efficient 2.5A Scalable DC-DC Converter Module with Complementary Dual-Mode Reconfigurable Hybrid Topology Achieving Always Inductor Current Reduction, Continuously Adjustable VCR Range, and Interleaving COUTAugmentation
Li, Huihua1; Ma, Qiaobo1; Jiang, Yang1; Martins, Rui1,2; Mak, Pui In1
2024-05
Conference Name44th Annual IEEE Custom Integrated Circuits Conference, CICC 2024
Source PublicationProceedings of 2024 IEEE Custom Integrated Circuits Conference
Pages22-2
Conference Date21 April 2024through 24 April 2024
Conference PlaceDenver, Colorado
CountryUSA
PublisherInstitute of Electrical and Electronics Engineers Inc.
Abstract

Efficiency and load capacity are critical for stable computing system operation. To address the need for compact integration and scalability, miniaturized power modules with integrated power devices in chip-sized packages are essential. These modules reduce component count and board space while maintaining high conversion efficiency and scalability for varying system loads. This work introduces a reconfigurable switched-capacitor (SC) hybrid converter topology designed for system-in-package (SiP) power modules. The DC-DC module, featuring a single inductor and capacitor directly mounted over the silicon die, achieves an enhanced output current (IOUT) to inductor current (IL,DC) ratio of up to 2. It provides a continuous adjustable voltage conversion ratio (VCR) range, generating 0.4 to 1.5V output at 1.8V input, with 96.7% efficiency and the capability to deliver 2.5A with a single module. Interleaving three modules achieves 94.3% efficiency with a maximum 6A IOUT, and ?VOUT reduction up to 60% through intrinsic properties of output capacitance (COUT) augmentation. In addition, a fully integrated gate driving scheme utilizing an on-chip high-frequency charge pump (QP) and globally shared bootstrap capacitor (CBST) is proposed to generate domain-floating rails catering to gate voltage demands.

DOI10.1109/CICC60959.2024.10529052
URLView the original
Indexed ByCPCI-S
Language英語English
WOS Research AreaEngineering ; Telecommunications
WOS SubjectEngineering, Electrical & Electronic ; Telecommunications
WOS IDWOS:001230023800092
Scopus ID2-s2.0-85193910860
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Citation statistics
Document TypeConference paper
CollectionFaculty of Science and Technology
THE STATE KEY LABORATORY OF ANALOG AND MIXED-SIGNAL VLSI (UNIVERSITY OF MACAU)
INSTITUTE OF MICROELECTRONICS
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorJiang, Yang
Affiliation1.University of Macau, Macao
2.Universidade de Lisboa, Portugal
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Li, Huihua,Ma, Qiaobo,Jiang, Yang,et al. A 96.7%-Efficient 2.5A Scalable DC-DC Converter Module with Complementary Dual-Mode Reconfigurable Hybrid Topology Achieving Always Inductor Current Reduction, Continuously Adjustable VCR Range, and Interleaving COUTAugmentation[C]:Institute of Electrical and Electronics Engineers Inc., 2024, 22-2.
APA Li, Huihua., Ma, Qiaobo., Jiang, Yang., Martins, Rui., & Mak, Pui In (2024). A 96.7%-Efficient 2.5A Scalable DC-DC Converter Module with Complementary Dual-Mode Reconfigurable Hybrid Topology Achieving Always Inductor Current Reduction, Continuously Adjustable VCR Range, and Interleaving COUTAugmentation. Proceedings of 2024 IEEE Custom Integrated Circuits Conference, 22-2.
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