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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]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
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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