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A Multiphase Switched-Capacitor DC-DC Converter Ring With Fast Transient Response and Small Ripple
Lu, Yan1; Jiang, Junmin2; Ki, Wing-Hung2
2017-02
Source PublicationIEEE JOURNAL OF SOLID-STATE CIRCUITS
ISSN0018-9200
Volume52Issue:2Pages:579-591
Abstract

A fully integrated step-down switched-capacitor dc-dc converter ring with 123 phases has been designed that could achieve fast dynamic voltage scaling for the microprocessor of wearable devices. The symmetrical multiphase converter ring surrounds its load in the square and supplies power to the on-chip power grid that is easily accessible at any point of the chip edges. The frequency of the V-DD-controlled oscillator is adjusted through its supply voltage V-DD, which allows the unity-gain frequency to be designed higher than the switching frequency. The converter ring has been fabricated in a low-leakage 65-nm CMOS process. This converter achieves a response time of 3 ns, a reference tracking speed of 2.5 V/mu s, and a minimum output ripple of 2.2 mV. The peak efficiency is 80% at the power density of 66.6 mW/mm(2), and the maximum power density is 180 mW/mm(2).

KeywordAmplifier Charge Pump Converter Ring Dc-dc Converter Dynamic Voltage And Frequency Scaling (Dvfs) Low Dropout (Ldo) Regulator Multiphase N-path Filter Switched-capacitor Power Converter (Scpc) Voltage-controlled Oscillator (Vco)
DOI10.1109/JSSC.2016.2617315
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000395642000020
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
The Source to ArticleWOS
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Citation statistics
Cited Times [WOS]:24   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF MICROELECTRONICS
Affiliation1.State Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macao, China
2.Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Lu, Yan,Jiang, Junmin,Ki, Wing-Hung. A Multiphase Switched-Capacitor DC-DC Converter Ring With Fast Transient Response and Small Ripple[J]. IEEE JOURNAL OF SOLID-STATE CIRCUITS,2017,52(2):579-591.
APA Lu, Yan,Jiang, Junmin,&Ki, Wing-Hung.(2017).A Multiphase Switched-Capacitor DC-DC Converter Ring With Fast Transient Response and Small Ripple.IEEE JOURNAL OF SOLID-STATE CIRCUITS,52(2),579-591.
MLA Lu, Yan,et al."A Multiphase Switched-Capacitor DC-DC Converter Ring With Fast Transient Response and Small Ripple".IEEE JOURNAL OF SOLID-STATE CIRCUITS 52.2(2017):579-591.
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