UM
An Integrated DC-DC Converter with Segmented Frequency Modulation and Multiphase Co-Work Control for Fast Transient Recovery
Chio,U. Fat1,2; Wen,Kuo Chih1,2; Sin,Sai Weng1,2; Lam,Chi Seng1,2; Lu,Yan1,2; Maloberti,Franco1,3; Martins,Rui P.1,4
2019-10-01
Source PublicationIEEE Journal of Solid-State Circuits
ISSN0018-9200
Volume54Issue:10Pages:2637-2648
AbstractThis paper presents a fully integrated voltage-controlled oscillator (VCO)-based switched-capacitor (SC) 15-phase dc-dc converter in 65-nm CMOS. We propose two transient-enhancement techniques: segmented frequency modulation (SFM) and multiphase co-work (MCW) control to reduce the latency of the VCO-based control loop and shorten the SC dc-dc converter's transient response time. The SFM can improve the heavy-to-light load transient by dynamically increasing the charge pump discharge current by nine times, while the MCW can enhance the light-to-heavy load recovery by synchronously combining three interleaved flying capacitors together during the transient state. We designed the 15-phase interleaved converter to support an output voltage of 1 V from a 2.4-V input supply, delivering up to 138 mA of load current, which takes only 25/29 ns for output voltage recovering to the steady state from heavy-to-light/light-to-heavy load transients, respectively. It obtains a peak efficiency of 82.8% and maintains the efficiency above 80% from 31 mA to the maximum load current. The SC dc-dc converter chip occupies 0.61 mm, and its output power density is 240 mW/mm
KeywordFully integrated SC DC-DC converter switched capacitor (SC) voltage-controlled oscillator (VCO)
DOI10.1109/JSSC.2019.2924092
URLView the original
Language英语
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Cited Times [WOS]:3   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.State-Key Laboratory of Analog and Mixed-Signal VLSI,Institute of Microelectronics,University of Macau,Macau,999078,Macao
2.Faculty of Science and Technology (FST),Department of Electrical and Computer Engineering (ECE),University of Macau,Macau,999078,Macao
3.Department of Electronics,University of Pavia,Pavia,27100,Italy
4.Faculty of Science and Technology (FST),Department of Electrical and Computer Engineering (ECE),University of Macau,Macau,999078,Macao
First Author AffilicationUniversity of Macau;  Faculty of Science and Technology
Recommended Citation
GB/T 7714
Chio,U. Fat,Wen,Kuo Chih,Sin,Sai Weng,et al. An Integrated DC-DC Converter with Segmented Frequency Modulation and Multiphase Co-Work Control for Fast Transient Recovery[J]. IEEE Journal of Solid-State Circuits,2019,54(10):2637-2648.
APA Chio,U. Fat,Wen,Kuo Chih,Sin,Sai Weng,Lam,Chi Seng,Lu,Yan,Maloberti,Franco,&Martins,Rui P..(2019).An Integrated DC-DC Converter with Segmented Frequency Modulation and Multiphase Co-Work Control for Fast Transient Recovery.IEEE Journal of Solid-State Circuits,54(10),2637-2648.
MLA Chio,U. Fat,et al."An Integrated DC-DC Converter with Segmented Frequency Modulation and Multiphase Co-Work Control for Fast Transient Recovery".IEEE Journal of Solid-State Circuits 54.10(2019):2637-2648.
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