TY - GEN
T1 - A system-in-package based energy harvesting for IoT devices with integrated voltage regulators and embedded inductors
AU - Lee, Edward
AU - Amir, Mohammad Faisal
AU - Sivapurapu, Sridhar
AU - Pardue, Colin
AU - Torun, Hakki Mert
AU - Bellaredj, Mohamed
AU - Swaminathan, Madhavan
AU - Mukhopadhyay, Saibal
N1 - Funding Information:
ACKNOWLEDGMENT This material is based on work supported by Semiconductor Research Corporation (SRC) under Texas Analog Center of Excellence (#2712.024).
Publisher Copyright:
© 2018 IEEE.
PY - 2018/8/7
Y1 - 2018/8/7
N2 - Integrated energy harvesting and delivery systems are crucial to the development and distribution of IoT devices, where physical dimensions are as important as efficiency. Current harvesting blocks use regulators with on-board inductors/capacitors to interface between the transducers and the load. A System-in-Package (SiP) with Integrated Voltage Regulator (IVR) and on-package passives provides a compact energy harvesting system. This paper demonstrates that, in a SiP based energy harvesting system, co-design of the regulator circuit and the passives depending on the input characteristics of the transducers, the material properties of the passives, and voltage/power demands of the output loads can maximize efficiency for various applications, and extend lifetime of battery-powered and autonomous IoT devices. This paper presents a system design tool that uses a loss model for pulse-frequency modulation (PFM) boost regulators, design of different embedded inductors, and performs co-analysis to estimate optimal efficiency. The simulation result shows potential of 6% improvement in efficiency by co-designing IVR and inductor, compared to optimizing IVR only for a given inductor.
AB - Integrated energy harvesting and delivery systems are crucial to the development and distribution of IoT devices, where physical dimensions are as important as efficiency. Current harvesting blocks use regulators with on-board inductors/capacitors to interface between the transducers and the load. A System-in-Package (SiP) with Integrated Voltage Regulator (IVR) and on-package passives provides a compact energy harvesting system. This paper demonstrates that, in a SiP based energy harvesting system, co-design of the regulator circuit and the passives depending on the input characteristics of the transducers, the material properties of the passives, and voltage/power demands of the output loads can maximize efficiency for various applications, and extend lifetime of battery-powered and autonomous IoT devices. This paper presents a system design tool that uses a loss model for pulse-frequency modulation (PFM) boost regulators, design of different embedded inductors, and performs co-analysis to estimate optimal efficiency. The simulation result shows potential of 6% improvement in efficiency by co-designing IVR and inductor, compared to optimizing IVR only for a given inductor.
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U2 - 10.1109/ECTC.2018.00259
DO - 10.1109/ECTC.2018.00259
M3 - Conference contribution
AN - SCOPUS:85051991371
SN - 9781538649985
T3 - Proceedings - Electronic Components and Technology Conference
SP - 1726
EP - 1731
BT - Proceedings - IEEE 68th Electronic Components and Technology Conference, ECTC 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 68th IEEE Electronic Components and Technology Conference, ECTC 2018
Y2 - 29 May 2018 through 1 June 2018
ER -