@ARTICLE{ iet:/content/journals/10.1049/el.2012.0315, author = {N. Khosropour}, author = {F. Krummenacher}, author = {M. Kayal}, keywords = {CMOS process;battery charging;miniaturised solar cells;rechargeable microbattery;Ni;micropower solar energy harvesting;size 0.18 mum;fully integrated ultra-low power management;NiMH microbattery;}, ISSN = {0013-5194}, language = {English}, abstract = {A fully integrated, area-efficient and ultra-low power management system for micro-power solar energy harvesting applications is proposed. This system harvests energy from miniaturised solar cells connected in series to charge a rechargeable microbattery. This circuit occupies less area compared to conventional inductive and switched-capacitor DC-DC converters, while achieving better efficiency during battery charging. Owing to very low power consumption of the circuit, efficiency remains high even under reduced light intensity. The proposed circuit was fabricated in a 0.18 µm CMOS process and occupies a core area of only 0.15 mm2 to charge a NiMH microbattery. The average power consumption of the whole power management system is less than 300 nW.}, title = {Fully integrated ultra-low power management system for micro-power solar energy harvesting applications}, journal = {Electronics Letters}, issue = {6}, volume = {48}, year = {2012}, month = {March}, pages = {338-339(1)}, publisher ={Institution of Engineering and Technology}, copyright = {© The Institution of Engineering and Technology}, url = {https://digital-library.theiet.org/;jsessionid=agbrsieoh7a6u.x-iet-live-01content/journals/10.1049/el.2012.0315} }