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LDO-Free Power Management System: A 10-bit Pipelined ADC Directly Powered by Inductor-Based Boost Converter with Ripple Calibration
Wang,Hanyu1; Sin,Sai Weng1; Lam,Chi Seng1; Maloberti,Franco1,2; Martins,Rui Paulo1
2020-12
Source PublicationIEEE Transactions on Circuits and Systems I: Regular Papers
ISSN1549-8328
Volume67Issue:12Pages:4174-4186
Abstract

This article presents a compact power management solution for a pipeline analog-to-digital converter (ADC), employing only a switching-mode power converter. By directly powering the ADC using a boost DC-DC converter, the power delivery network (PDN) exhibits an overall-high power efficiency. The proposed foreground ADC calibration calibrates the ripple error induced from the power converter, which obviates the need for well-regulated supply and reference voltage offered by low-efficiency linear low-dropout regulators (LDOs). A chip integrates the boost DC-DC converter and the pipelined ADC with an external power inductor. The prototype, implemented in 65-nm CMOS, occupies 2.34-mm2 of total active area (9.4% - ADC, 2.6% - power controller and switches, and 88% - output capacitance). In the measurement, the boost converter, switching at 31.25MHz, converts a 0.5V input to 1.2V and delivers 22.8mW of power to the pipeline ADC. The boost DC-DC converter supplies all voltage domains, including analog/digital power supply and reference. The resulting overall system power efficiency is 78.6%. Sampled at 500MS/s, the ADC achieves a signal-to-noise and distortion ratio (SNDR) of 34.7/39.9dB without/with the ripple calibration for an input frequency of 177MHz, respectively.

KeywordPower Management Switching-mode Power Converters Boost Dc-dc Converters Analog-to-digital Converters (Adcs) Pipelined Adc Ripple Calibration
DOI10.1109/TCSI.2020.3025350
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000596021000002
Scopus ID2-s2.0-85097356972
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF MICROELECTRONICS
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorSin,Sai Weng
Affiliation1.University of Macau
2.The University of Pavia
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Wang,Hanyu,Sin,Sai Weng,Lam,Chi Seng,et al. LDO-Free Power Management System: A 10-bit Pipelined ADC Directly Powered by Inductor-Based Boost Converter with Ripple Calibration[J]. IEEE Transactions on Circuits and Systems I: Regular Papers,2020,67(12):4174-4186.
APA Wang,Hanyu,Sin,Sai Weng,Lam,Chi Seng,Maloberti,Franco,&Martins,Rui Paulo.(2020).LDO-Free Power Management System: A 10-bit Pipelined ADC Directly Powered by Inductor-Based Boost Converter with Ripple Calibration.IEEE Transactions on Circuits and Systems I: Regular Papers,67(12),4174-4186.
MLA Wang,Hanyu,et al."LDO-Free Power Management System: A 10-bit Pipelined ADC Directly Powered by Inductor-Based Boost Converter with Ripple Calibration".IEEE Transactions on Circuits and Systems I: Regular Papers 67.12(2020):4174-4186.
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