In-Body Energy Harvesting Power Management Interface for Post Heart Transplantation Monitoring
- Resource Type
- Conference
- Authors
- Almarri, Noora; Jiang, Dai; Demosthenous, Andreas
- Source
- 2022 29th IEEE International Conference on Electronics, Circuits and Systems (ICECS) Electronics, Circuits and Systems (ICECS), 2022 29th IEEE International Conference on. :1-4 Oct, 2022
- Subject
- Bioengineering
Components, Circuits, Devices and Systems
Computing and Processing
General Topics for Engineers
Geoscience
Robotics and Control Systems
Signal Processing and Analysis
Heart
Power supplies
Power system management
Simulation
Rectifiers
Voltage
Implants
Piezoelectric
power harvesting
power interface
power management
regulating rectifier
- Language
Deep tissue energy harvesters are of increasing interest in the development of battery-less implantable devices. This paper presents a fully integrated ultra-low quiescent power management interface. It has power optimization and impedance matching between a piezoelectric energy harvester and the functional load that could be potentially powered by the heart's mechanical motions. The circuit has been designed in $0.18-\mu\mathrm{m}$ CMOS technology. It dissipates 189.8 nW providing two voltage outputs of 1.4 V and 4.2 V. The simulation results show an output power 8.2x times of an ideal full-bridge rectifier without an external power supply. The design has the potential for use in self-powered heart implantable devices as it is capable providing stable output voltages from a cold startup.