An Overview of Hybrid DC–DC Converters: From Seeds to Leaves
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 t...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2024-01-01
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| Series: | IEEE Open Journal of the Solid-State Circuits Society |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10323295/ |
| _version_ | 1797197425269538816 |
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| author | Yan Lu Junwei Huang Zhiguo Tong Tingxu Hu Wen-Liang Zeng Mo Huang Xiangyu Mao Guigang Cai |
| author_facet | Yan Lu Junwei Huang Zhiguo Tong Tingxu Hu Wen-Liang Zeng Mo Huang Xiangyu Mao Guigang Cai |
| author_sort | Yan Lu |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-24T06:43:45Z |
| format | Article |
| id | doaj.art-e0f2979fb00b4c609ca7447a733f2ba1 |
| institution | Directory Open Access Journal |
| issn | 2644-1349 |
| language | English |
| last_indexed | 2024-04-24T06:43:45Z |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of the Solid-State Circuits Society |
| spelling | doaj.art-e0f2979fb00b4c609ca7447a733f2ba12024-04-22T20:40:00ZengIEEEIEEE Open Journal of the Solid-State Circuits Society2644-13492024-01-014122410.1109/OJSSCS.2023.333422810323295An Overview of Hybrid DC–DC Converters: From Seeds to LeavesYan Lu0https://orcid.org/0000-0001-9273-7576Junwei Huang1Zhiguo Tong2Tingxu Hu3Wen-Liang Zeng4Mo Huang5https://orcid.org/0000-0003-0497-194XXiangyu Mao6Guigang Cai7https://orcid.org/0000-0002-8204-8870State Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macau, ChinaState Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macau, ChinaState Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macau, ChinaState Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macau, ChinaState Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macau, ChinaState Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macau, ChinaState Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macau, ChinaState Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macau, ChinaWith 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.https://ieeexplore.ieee.org/document/10323295/3-D power delivery for chipletbuck–boostbuck converterDC–DC conversionhybrid converter topologyintegrated voltage regulator (IVR) |
| spellingShingle | Yan Lu Junwei Huang Zhiguo Tong Tingxu Hu Wen-Liang Zeng Mo Huang Xiangyu Mao Guigang Cai An Overview of Hybrid DC–DC Converters: From Seeds to Leaves IEEE Open Journal of the Solid-State Circuits Society 3-D power delivery for chiplet buck–boost buck converter DC–DC conversion hybrid converter topology integrated voltage regulator (IVR) |
| title | An Overview of Hybrid DC–DC Converters: From Seeds to Leaves |
| title_full | An Overview of Hybrid DC–DC Converters: From Seeds to Leaves |
| title_fullStr | An Overview of Hybrid DC–DC Converters: From Seeds to Leaves |
| title_full_unstemmed | An Overview of Hybrid DC–DC Converters: From Seeds to Leaves |
| title_short | An Overview of Hybrid DC–DC Converters: From Seeds to Leaves |
| title_sort | overview of hybrid dc x2013 dc converters from seeds to leaves |
| topic | 3-D power delivery for chiplet buck–boost buck converter DC–DC conversion hybrid converter topology integrated voltage regulator (IVR) |
| url | https://ieeexplore.ieee.org/document/10323295/ |
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