TY - GEN
T1 - An energy-recycling three-switch single-inductor dual-input buck/boost DC-DC converter with 93% peak conversion efficiency and 0.5mm2 active area for light energy harvesting
AU - Chen, Hsuan Ju
AU - Wang, Yi Hsiang
AU - Huang, Peng Chang
AU - Kuo, Tai Haur
PY - 2015/3/17
Y1 - 2015/3/17
N2 - Energy harvesting (EH) can be used in wireless sensor networks (WSNs) since the sensors can be powered by ambient energy in conjunction with rechargeable batteries to achieve near-perpetual operation [1-4]. One common solution is to harvest energy from ambient light through photovoltaic (PV) modules. In such a system, a battery supplements energy when the power provided by the environment is insufficient or when the WSN is active, and stores surplus energy for future use when the WSN is inactive. Accordingly, power management in an EH system involves a balance among the PV module, battery and load. Previous work [1] has implemented an EH system for moving vehicles and portable devices, but it is not suitable for indoor light energy harvesting. Although a single-inductor multi-input multi-output (SIMIMO) topology is one solution, the efficiencies of existing implementations [2-4] are degraded by additional conduction and switching losses due to the inductor-sharing switches in series with the inductor. In response, this paper proposes an energy-recycling strategy and implements the corresponding power converter with fewer switches.
AB - Energy harvesting (EH) can be used in wireless sensor networks (WSNs) since the sensors can be powered by ambient energy in conjunction with rechargeable batteries to achieve near-perpetual operation [1-4]. One common solution is to harvest energy from ambient light through photovoltaic (PV) modules. In such a system, a battery supplements energy when the power provided by the environment is insufficient or when the WSN is active, and stores surplus energy for future use when the WSN is inactive. Accordingly, power management in an EH system involves a balance among the PV module, battery and load. Previous work [1] has implemented an EH system for moving vehicles and portable devices, but it is not suitable for indoor light energy harvesting. Although a single-inductor multi-input multi-output (SIMIMO) topology is one solution, the efficiencies of existing implementations [2-4] are degraded by additional conduction and switching losses due to the inductor-sharing switches in series with the inductor. In response, this paper proposes an energy-recycling strategy and implements the corresponding power converter with fewer switches.
UR - http://www.scopus.com/inward/record.url?scp=84940736466&partnerID=8YFLogxK
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U2 - 10.1109/ISSCC.2015.7063082
DO - 10.1109/ISSCC.2015.7063082
M3 - Conference contribution
T3 - Digest of Technical Papers - IEEE International Solid-State Circuits Conference
SP - 374
EP - 375
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 -