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Digital 2-/3-Phase Switched-Capacitor Converter With Ripple Reduction and Efficiency Improvement
Jiang, Junmin; Ki, Wing-Hung; Lu, Yan
2017-07
Conference NameIEEE JOURNAL OF SOLID-STATE CIRCUITS
Volume52
Issue7
Pages1836-1848
Publication Place445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
AbstractThis paper presents a digitally controlled 2-/3-phase 6-ratio switched-capacitor (SC) dc-dc converter with low output voltage ripple and high efficiency. To achieve wide input and output voltage ranges, six voltage conversion ratios are generated with only two discrete flying capacitors by using both 2- and 3-phase operations. An adaptive ripple reduction scheme is proposed to achieve up to four times reduction in the output voltage ripple. The complexity of controller design is reduced by using digital synthesis, and the technique is scalable with process. Fast loop response is achieved by using synchronized hysteretic control. The SC converter was fabricated in a 0.13-mu m CMOS process. It can deliver a maximum power of 250 mW to an output of 0.5-3 V with a wide input voltage range of 1.6-3.3 V. Compared to an SC converter with only 2-phase operation, the maximum efficiency improvement is 20%. The converter achieves a peak efficiency of 91%.
KeywordAdaptive ripple reduction dc-dc converter digitally controlled efficiency improvements 2-/3-phase 3-phase SC converter switched-capacitor (SC) voltage conversion ratio voltage regulator
DOI10.1109/JSSC.2017.2679065
URLView the original
Indexed BySCIE ; CPCI
Language英語English
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000404301300011
The Source to ArticleWOS
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Cited Times [WOS]:21   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionUniversity of Macau
Recommended Citation
GB/T 7714
Jiang, Junmin,Ki, Wing-Hung,Lu, Yan. Digital 2-/3-Phase Switched-Capacitor Converter With Ripple Reduction and Efficiency Improvement[C]. 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA:IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC,2017:1836-1848.
APA Jiang, Junmin,Ki, Wing-Hung,&Lu, Yan.(2017).Digital 2-/3-Phase Switched-Capacitor Converter With Ripple Reduction and Efficiency Improvement.,52(7),1836-1848.
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