A 220-mV input, 8.6 step-up voltage conversion ratio, 10.45-μW output power, fully integrated switched-capacitor converter for energy harvesting
- Resource Type
- Conference
- Authors
- Intaschi, Luca; Bruschi, Paolo; Iannaccone, Giuseppe; Dalena, Francesco
- Source
- 2017 IEEE Custom Integrated Circuits Conference (CICC) Custom Integrated Circuits Conference (CICC), 2017 IEEE. :1-4 Apr, 2017
- Subject
- Components, Circuits, Devices and Systems
Clocks
Generators
Capacitors
Switches
DC-DC power converters
Charge pumps
Inverters
Energy Harvesting
DC-DC Converter
- Language
- ISSN
- 2152-3630
This paper presents a fully integrated step-up switched-capacitor DC-DC converter for energy harvesting applications. The proposed solution exhibits both a high voltage-conversion ratio and a high power-conversion efficiency from a low-voltage source such as a thermoelectric generator or an indoor solar cell. The circuit has been implemented in TSMC 55nm CMOS process. Measurements demonstrate that it can properly operate with a 220 mV input, providing a 1.9 V output voltage at 10.45 μW output power, with 37.4% power conversion efficiency. We demonstrate that it can be used as a power supply for a Bluetooth Low Energy beacon with a thermoelectric generator subjected to a temperature difference of only 3.5°C.