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Analysis, Design and Control of an Integrated Three-Level Buck Converter under DCM Operation
Zheng,Wen Ming1,2,3; Zeng,Wen Liang1,2,3; Chi-Wa,U.1,2,3; Lam,Chi Seng1,2,3; Lu,Yan1,2,3; Sin,Sai Weng1,2,3; Wong,Man Chung3; Martins,Rui Paulo1,2,3,4
2020
Source PublicationJournal of Circuits, Systems and Computers
ISSN0218-1266
Volume29Issue:1
AbstractA 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
Language英语
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Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.State Key Laboratory of Analog and Mixed-Signal VLSI,University of Macau,999078,Macao
2.Institute of Microelectronics,University of Macau,999078,Macao
3.Department of Electrical and Computer Engineering,Faculty of Science of Technology,University of Macau,999078,Macao
4.On leave from Instituto Superior Técnico,Universidade de Lisboa,Portugal
First 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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