TY - GEN
T1 - A 50nW-to-10mW output power tri-mode digital buck converter with self-tracking zero current detection for photovoltaic energy harvesting
AU - Chen, Po-Hung
AU - Wu, Chung Shiang
AU - Lin, Kai Chun
PY - 2015/2/22
Y1 - 2015/2/22
N2 - Photovoltaic energy harvesting is an attractive method of developing battery-free systems for wireless sensors, biomedicai electronics, and the internet of things (IoT). To obtain an energy-efficient system, low-power digital circuits operating in the near/sub-threshold region are widely used in such applications. Therefore, the design of a low-voltage buck converter, which converts the harvested energy to the regulated output is critical. Sub-1V buck converters have been implemented using a large inductor [1] to operate in a continuous conduction mode (CCM). Both CCM and discontinuous conduction mode (DCM) operation has been demonstrated in [2], using an analog zero current detection (ZCD) technique to extend the available output power range. However, the analog circuit limits the minimum output power to 50μW, and reduces the conversion efficiency under light load conditions.
AB - Photovoltaic energy harvesting is an attractive method of developing battery-free systems for wireless sensors, biomedicai electronics, and the internet of things (IoT). To obtain an energy-efficient system, low-power digital circuits operating in the near/sub-threshold region are widely used in such applications. Therefore, the design of a low-voltage buck converter, which converts the harvested energy to the regulated output is critical. Sub-1V buck converters have been implemented using a large inductor [1] to operate in a continuous conduction mode (CCM). Both CCM and discontinuous conduction mode (DCM) operation has been demonstrated in [2], using an analog zero current detection (ZCD) technique to extend the available output power range. However, the analog circuit limits the minimum output power to 50μW, and reduces the conversion efficiency under light load conditions.
UR - http://www.scopus.com/inward/record.url?scp=84940741207&partnerID=8YFLogxK
U2 - 10.1109/ISSCC.2015.7063083
DO - 10.1109/ISSCC.2015.7063083
M3 - Conference contribution
AN - SCOPUS:84940741207
T3 - Digest of Technical Papers - IEEE International Solid-State Circuits Conference
SP - 376
EP - 377
BT - 2015 IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2015 62nd IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers
Y2 - 22 February 2015 through 26 February 2015
ER -
