Power Management for Wearable Electronic Devices, 1st ed. 2020 Analog Circuits and Signal Processing Series

This book describes power management integrated circuits (PMIC), for power converters and voltage regulators necessary for energy efficient and small form factor systems. The authors discuss state-of-the-art PMICs not only for battery powered wearable devices, but also energy harvesting-based devices. The circuits presented support voltage scaling to reduce the overall average power consumption of a wearable device, resulting in longer device operating time. The discussion includes many designs, control techniques and approaches to distribute efficiently the power among different blocks in the device.

? Demonstrates for readers how to innovate in designing power management integrated circuits (PMIC) suitable for wearable devices, powered by either battery or harvesting energy;

? Introduces a dual outputs switched capacitor, using a single voltage regulator to minimize the area overhead and discusses the effect of having more than two outputs on the area and power efficiency;

? Introduces a novel clock-less digital LDO regulator that eliminates the use of the clocked comparator and serial shift register in the conventional design;

? Presents experimental results of energy harvesting-based power management units (PMU), using different combinations of power converters and voltage regulators, providing a guide for designers to select the appropriate option based on device requirements.

Introduction to Power Management IC.- Introduction to TEG-based Power Management Unit.- TEG-based Power Management Designs and Characterizations.- Dual Outputs Switched Capacitor Voltage Regulator.- Ratioed Logic Comparator-Based Digital LDO Regulator.- Conclusions and Future Work.

Dima Kilani (S’13) received her PhD, Msc and B.S. degrees in Electrical and Electronics Engineering from Khalifa University, UAE, in 2019, 2015 and 2013, respectively. Her PhD and Msc research focused on low-power mixed signal integrated circuit design including voltage regulators and DC-DC power converters targeting high power efficiency. She is currently a postdoctoral Fellow at Khalifa University where she focuses on power management unit design for energy harvesting applications. Kilani’s work has appeared in high impact publications such as  IEEE Transaction of Circuits and Systems (TCAS) as well as presented at prestigious international conferences such as International Symposium of Circuits and Systems (ISCAS). Kilani has 15 publications and one patent filed.

Demonstrates for readers how to innovate in designing power management integrated circuits (PMIC) suitable for wearable devices, powered by either battery or harvesting energy;

Introduces a dual outputs switched capacitor, using a single voltage regulator to minimize the area overhead and discusses the effect of having more than two outputs on the area and power efficiency;

Introduces a novel clock-less digital LDO regulator that eliminates the use of the clocked comparator and serial shift register in the conventional design;

Presents experimental results of energy harvesting-based power management units (PMU), using different combinations of power converters and voltage regulators, providing a guide for designers to select the appropriate option based on device requirements.