TY - GEN
T1 - An adaptive load-line tuning IC for photovoltaic module integrated mobile device with 470μs transient time, over 99% steady-state accuracy and 94% power conversion efficiency
AU - Liu, Wen Chuen
AU - Wang, Yi Hsiang
AU - Kuo, Tai Haur
PY - 2013
Y1 - 2013
N2 - Many modern mobile devices have a touchscreen and are powered by a rechargeable battery. To extend battery usage time before recharge, harvesting energy from ambient light provides an elegant solution if the photovoltaic (PV) modules can be integrated with mobile devices [1]. However, mobile devices are frequently finger operated and/or in motion, so light-harvesting should consider fast-changing shading and partial shading problems. Previous IC works [2-4] have reported on the implementation of maximum power point tracking (MPPT) for light-harvesting, none of them have concurrently addressed these two problems. Although one of these works [3] considered the mobile device issue, it targets high MPPT steady-state accuracy without considering fast-changing shading problem. Hence, there is still room for improvement with respect to short MPPT transient time to harvest more energy for extending battery usage time.
AB - Many modern mobile devices have a touchscreen and are powered by a rechargeable battery. To extend battery usage time before recharge, harvesting energy from ambient light provides an elegant solution if the photovoltaic (PV) modules can be integrated with mobile devices [1]. However, mobile devices are frequently finger operated and/or in motion, so light-harvesting should consider fast-changing shading and partial shading problems. Previous IC works [2-4] have reported on the implementation of maximum power point tracking (MPPT) for light-harvesting, none of them have concurrently addressed these two problems. Although one of these works [3] considered the mobile device issue, it targets high MPPT steady-state accuracy without considering fast-changing shading problem. Hence, there is still room for improvement with respect to short MPPT transient time to harvest more energy for extending battery usage time.
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U2 - 10.1109/ISSCC.2013.6487641
DO - 10.1109/ISSCC.2013.6487641
M3 - Conference contribution
AN - SCOPUS:84876587416
SN - 9781467345132
T3 - Digest of Technical Papers - IEEE International Solid-State Circuits Conference
SP - 70
EP - 71
BT - 2013 IEEE International Solid-State Circuits Conference, ISSCC 2013 - Digest of Technical Papers
T2 - 2013 60th IEEE International Solid-State Circuits Conference, ISSCC 2013
Y2 - 17 February 2013 through 21 February 2013
ER -