Journal
ELECTRONICS
Volume 10, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/electronics10101185
Keywords
AC-DC converter; shunt regulator; full bridge rectifier; electrostatic vibration energy harvesting; fully integrated; IoT
Categories
Funding
- d-lab.VDEC
- Cadence Design Systems, Inc.
- Rohm Corp.
- Micron Foundation
- Synopsys, Inc.
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This paper introduces an AC-DC converter for electrostatic vibration energy harvesting, utilizing CMOS technology to achieve high open circuit voltages. By utilizing a bandgap reference and built-in power-on reset, the converter is able to function normally upon start-up.
This paper proposes an AC-DC converter for electrostatic vibration energy harvesting. The converter is composed of a CMOS full bridge rectifier and a CMOS shunt regulator. Even with 1 V CMOS, the open circuit voltage of the energy transducer can be as high as 10 V and beyond. Bandgap reference (BGR) inputs a regulated voltage, which is controlled by the output voltage of the BGR. Built-in power-on reset is introduced, which can minimize the silicon area and power to function normally found upon start-up. The AC-DC converter was fabricated with a 65 nm low-Vt 1 V CMOS with 0.081 mm(2). 1 V regulation was measured successfully at 20-70 degrees C with a power conversion efficiency of 43%.
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