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Analysis, Design and Control of an Integrated Three-Level Buck Converter under DCM Operation
Zheng,Wen Ming; Zeng,Wen Liang; Chi-Wa,U.; Lam,Chi Seng; Lu,Yan; Sin,Sai Weng; Wong,Man Chung; Martins,Rui Paulo
2020-01
Source PublicationJournal of Circuits, Systems and Computers
ISSN0218-1266
Volume29Issue:1
Abstract

A three-level buck (TLB) converter has the characteristics of higher voltage conversion efficiency, lower inductor current ripples, output voltage ripples and voltage stresses on switches when compared with the buck converters in continuous conduction mode (CCM). With a TLB converter integrated on a chip, we cannot avoid its discontinuous conduction mode (DCM) operation due to a smaller inductance and load variation. In this paper, we'll present and discuss the analysis, design and control of a TLB converter under DCM operation, implemented in a 65nm CMOS process. Transistor level simulation results show that when the TLB converter operates at 100MHz with a 5nH on-chip inductor, a 10nF output capacitor and a 10nF flying capacitor, it can achieve an output conversion range of 0.7-1.2V from a 2.4V input supply, with a peak efficiency of 81.5%@120mW. The output load transient response is 100mV with 101ns for undershoot, and 86mV with 110ns for overshoot when IOUT=10-100mA. The maximum output voltage ripple is less than 19mV.

KeywordDcm Fast Transient Response Low Voltage Ripple Modeling Three-level Buck Converter Voltage Mode Controller
DOI10.1142/S0218126620500115
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaComputer Science ; Engineering
WOS SubjectComputer Science, Hardware & Architecture ; Engineering, Electrical & Electronic
WOS IDWOS:000519938900011
Scopus ID2-s2.0-85062873408
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Document TypeJournal article
CollectionFaculty of Science and Technology
Corresponding AuthorLam,Chi Seng
AffiliationUniversity of Macau
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Zheng,Wen Ming,Zeng,Wen Liang,Chi-Wa,U.,et al. Analysis, Design and Control of an Integrated Three-Level Buck Converter under DCM Operation[J]. Journal of Circuits, Systems and Computers,2020,29(1).
APA Zheng,Wen Ming,Zeng,Wen Liang,Chi-Wa,U.,Lam,Chi Seng,Lu,Yan,Sin,Sai Weng,Wong,Man Chung,&Martins,Rui Paulo.(2020).Analysis, Design and Control of an Integrated Three-Level Buck Converter under DCM Operation.Journal of Circuits, Systems and Computers,29(1).
MLA Zheng,Wen Ming,et al."Analysis, Design and Control of an Integrated Three-Level Buck Converter under DCM Operation".Journal of Circuits, Systems and Computers 29.1(2020).
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