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Author Title [ Type(Asc)] Year
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Journal Article
X. Liu, Calhoun, B. H., and Li, S., A Sub-nW 93% Peak Efficiency Buck Converter with Wide Dynamic Range, Fast DVFS, and Asynchronous Load-Transient Control, IEEE Journal of Solid-State Circuits, 2022.PDF icon A SubnW 93 Peak Efficiency Buck Converter With Wide Dynamic Range Fast DVFS and Asynchronous Load Transient Control.pdf (3.94 MB)
S. Li, Roy, A., and Calhoun, B. H., A Piezoelectric Energy-Harvesting System with Parallel-SSHI Rectifier and Integrated Maximum-Power-Point Tracking, IEEE Solid-State Circuits Letters (SSCL), Special Issue on VLSI (invited paper), 2019.
C. J. Lukas, Yahya, F. B., Breiholz, J., Roy, A., Chen, X., Patel, H. N., Liu, N. X., Kosari, A., Li, S., Kamakshi, D. Akella, Ayorinde, O., Wentzloff, D. D., and Calhoun, B. H., A 1.02 μW Battery-Less, Continuous Sensing and Post-Processing SiP for Wearable Applications, IEEE Transactions on Biomedical Circuits and Systems, 2019.PDF icon 08625544.pdf (3.22 MB)
D. S. Truesdell, Li, S., and Calhoun, B. H., A 0.5V 560-kHz 18.8-fJ/Cycle On-Chip Oscillator with 96.1-ppm/°C Steady-State Stability Using a Duty-Cycled Digital Frequency-Locked Loop, IEEE Journal of Solid-State Circuits, 2021.PDF icon A 0.5-V 560-kHz 18.8-fJ_Cycle On-Chip Oscillator With 96.1ppm_C Steady-State Stability Using a Duty-Cycled Digital Frequency-Locked Loop.pdf (2.95 MB)
Conference Paper
S. Li and Calhoun, B. H., Sub-microAmp Energy Harvesting and Power Management Units for Self-Powered IoT SoCs: Analog vs. Digital Implementations, in 2020 IEEE Custom Integrated Circuits Conference (CICC), (invited paper), 2020.
S. Li, Roy, A., and Calhoun, B. H., A Piezoelectric Energy-Harvesting System with Parallel-SSHI Rectifier and Integrated MPPT Achieving 417% Energy-Extraction Improvement and 97% Tracking Efficiency, in 2019 Symposium on VLSI Circuits, Kyoto, Japan, 2019.
D. S. Truesdell, Liu, X., Breiholz, J., Gupta, S., Li, S., and Calhoun, B. H., NanoWattch: A Self-Powered 3-nW RISC-V SoC Operable from 160mV Photovoltaic Input with Integrated Temperature Sensing and Adaptive Performance Scaling, in 2022 IEEE Symposium on VLSI Circuits (VLSI), (Equally-Credited Authors), 2022.PDF icon NanoWattch A Self-Powered 3-nW RISC-V SoC Operable from 160mV Photovoltaic Input with Integrated Temperature Sensing and Adaptive Performance Scaling.pdf (11.11 MB)
F. Yahya, Lukas, C. J., Breiholz, J., Roy, A., Patel, H. N., Liu, N. X., Chen, X., Kosari, A., Li, S., Akella, D., Ayorinde, O., Wentzloff, D. D., and Calhoun, B. H., A battery-less 507nW SoC with integrated platform power manager and SiP interfaces, in 2017 Symposium on VLSI Circuits, Kyoto, Japan, 2017.
S. Li, Liu, X., and Calhoun, B. H., A 956pW Switched-Capacitor Sub-Bandgap Reference with 0.44-to-3.3V Supply Range, -67dB PSRR, and 0.2% within-Wafer Inaccuracy for Nanowatt IoT Systems, in 2022 IEEE European Solid-State Circuits Conference (ESSCIRC), In Press.
S. Li, Breiholz, J., Kamineni, S., Im, J., Wentzloff, D. D., and Calhoun, B. H., An 85 nW IoT Node-Controlling SoC for MELs Power-Mode Management and Phantom Energy Reduction, in 2020 IEEE International Symposium on Circuits and Systems (ISCAS), 2020.
J. Moody, Bassirian, P., Roy, A., Feng, Y., Li, S., Costanzo, R., N. Barker, S., Calhoun, B. H., and Bowers, S. M., An 8.3 nW -72 dBm Event Driven IoE Wake Up Receiver RF Front End, in 2017 European Microwave Integrated Circuit Conference (EuMIC), Nuremberg, Germany, 2017.
X. Liu, Li, S., and Calhoun, B. H., An 802pW 93% Peak Efficiency Buck Converter with 5.5×106 Dynamic Range Featuring Fast DVFS and Asynchronous Load-Transient Control, in 2021 IEEE European Solid-State Circuits Conference (ESSCIRC), 2021.PDF icon An 802pW 93% Peak Efficiency Buck Converter with 5.5×106 Dynamic Range Featuring Fast DVFS and Asynchronous Load-Transient Control.pdf (580.42 KB)
S. Li and Calhoun, B. H., A 745pA Hybrid Asynchronous Binary-Searching and Synchronous Linear-Searching Digital LDO with 3.8×105 Dynamic Load Range, 99.99% Current Efficiency, and 2mV Output Voltage Ripple, in IEEE International Solid- State Circuits Conference (ISSCC), San Francisco, CA, 2019.
S. Li, Liu, X., and Calhoun, B. H., A 32nA Fully Autonomous Multi-Input Single-Inductor Multi-Output Energy Harvesting and Power Management Platform with 1.2×10^5 Dynamic Range, Integrated MPPT, and Multi-Modal Cold Start-Up, in IEEE International Solid-State Circuits Conference (ISSCC), 2022.
X. Liu, Kamineni, S., Breiholz, J., Calhoun, B. H., and Li, S., A 194nW Energy-Performance-Aware IoT SoC Employing a 5.2nW 92.6% Peak Efficiency Power Management Unit for System Performance Scaling, Fast DVFS and Energy Minimization, in IEEE International Solid-State Circuits Conference (ISSCC), 2022.PDF icon A 194nW Energy-Performance-Aware IoT SoC Employing a 5.2nW 92.6% Peak Efficiency Power Management Unit for System Performance Scaling, Fa.pdf (4.4 MB)
D. S. Truesdell, Li, S., and Calhoun, B. H., A 0.5V 560kHz 18.8fJ/Cycle Ultra-Low Energy Oscillator in 65nm CMOS with 96.1ppm/°C Stability Using a Duty-Cycled Digital Frequency-Locked Loop, in 2020 IEEE Symposium on VLSI Circuits (VLSI), 2020.PDF icon A 0.5V 560kHz 18.8fJ_Cycle Ultra-Low Energy Oscillator in 65nm CMOS with 96.1ppm_C Stability Using a Duty-Cycled Frequency-Locked Loop.pdf (2.67 MB)