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| Status | 已發表Published |
| 28.3 A 12-28V to 0.6-1.8V Ratio-Regulatable Dickson SC Converter with Dual-Mode Phase Misalignment Operations Achieving 93.1% Efficiency and 6A Output | |
Qiaobo Ma1,2 ; Yang Jiang1,2  ; Huihua Li1,2; Xiongjie Zhang1,2; Man-Kay Law1,2; Rui P. Martins1,2,3; Pui-In Mak1,2
| |
| 2024-03 | |
| Conference Name | 2024 IEEE International Solid-State Circuits Conference (ISSCC) |
| Conference Date | 18-22 February 2024 |
| Conference Place | San Francisco |
| Country | USA |
| Abstract | The USB PD standard for powering portable computing devices is continually advancing. The Adjustable Voltage Supply (AVS) mode enables supply-end adjustments to fulfill load requirements, optimizing energy efficiency. Power converters for point-of-load supply need to accommodate a wider input voltage range while maintaining high efficiency, compact size, and ample load capacity. Various hybrid switched-capacitor (SC) topologies [1–7] have been proposed to address higher input voltages and ensure superior performance at higher voltage conversion ratios (VCRs). Many designs incorporate one or more power inductors along the primary output current path, such as flying-capacitor (C F ) multi-level, hybrid Dickson [7], and DSD-based converters [5, 6]. Consequently, the inductors dominate system volume due to conduction loss concern, while the number of inductor branches limits load capacity. In this work, we introduce a 12-to-28V input, 0.6-to-1.8V output ratio-regulatable (R 2 ) Dickson SC converter. It delivers a 6A load current with 81.9% efficiency and an overall peak efficiency of 93.1%, employing a single 4.7μH inductor of 9.6mm 3 . In addition, it retains the multi-branch output conduction feature of Dickson topology, as shown in Fig. 28.3.1, to boost the output current while maintaining efficiency. Key contributions of this design encompass: 1) Introducing a concept that embeds a current-regulating function using an inductor in an SC power cell, enabling VCR regulation capacity with a Dickson converter. 2) Proposing a switching phase misalignment operation mode to mitigate the current gathering issue of C F due to the change/discharge cycle imbalance. 3) Implementing a compact gate driving scheme that employs an on-chip charge pump to reduce external bootstrap capacitor (C BST ). |
| DOI | 10.1109/ISSCC49657.2024.10454505 |
| URL | View the original |
| Indexed By | SCIE |
| Fulltext Access | |
| Citation statistics | |
| Document Type | Conference paper |
| Collection | INSTITUTE OF MICROELECTRONICS |
| Corresponding Author | Yang Jiang |
| Affiliation | 1.State Key Laboratory of Analog and Mixed-Signal VLSI, Institute of Microelectronics, University of Macau, Macao 2.ECE Department, Faculty of Science and Technology, University of Macau, Macao 3.On leave from Instituto Superior Tecnico, Universidade de Lisboa, Lisboa, Portugal |
| First Author Affilication | University of Macau; Faculty of Science and Technology |
| Corresponding Author Affilication | University of Macau; Faculty of Science and Technology |
| Recommended Citation GB/T 7714 | Qiaobo Ma,Yang Jiang,Huihua Li,et al. 28.3 A 12-28V to 0.6-1.8V Ratio-Regulatable Dickson SC Converter with Dual-Mode Phase Misalignment Operations Achieving 93.1% Efficiency and 6A Output[C], 2024. |
| APA | Qiaobo Ma., Yang Jiang., Huihua Li., Xiongjie Zhang., Man-Kay Law., Rui P. Martins., & Pui-In Mak (2024). 28.3 A 12-28V to 0.6-1.8V Ratio-Regulatable Dickson SC Converter with Dual-Mode Phase Misalignment Operations Achieving 93.1% Efficiency and 6A Output. . |
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