A MOSFET only, step-up DC DC micro power converter, for solar energy harvesting applications

• Autorzy: Carvalho C. , Paulino N.
• Języki publikacji: EN

Abstrakty

EN

In this paper, a step-up micro power converter for solar energy harvesting applications is presented. The circuit is based on a switched-capacitor voltage doubler architecture with MOSFET capacitors, which results in an area approximately eight times smaller than using MiM capacitors for the 0.13 žm CMOS technology. In order to compensate for the loss of efficiency, due to the larger parasitic capacitances, a charge reutilization scheme is employed. The circuit uses a phase controller, designed specifically to work with the series of two PV cells, in order to regulate the output voltage to 1.2 V. Electrical simulations of the circuit, together with an equivalent electrical model of a PV cell, show that the circuit can deliver a power of 536.1 žW to the load, while drawing a power of 799.8 žW from two PV cells stacked in series, corresponding to a maximum efficiency of 67%.

Słowa kluczowe

EN

CMOS circuits; electronics; energy harvesting; power management circuits; PV cells

PL

układy CMOS; elektronika; energia zbiorów; układy zarządzania energią; komórki fotowoltaiczne

• Wydawca: Lodz University of Technology. Department of Microelectronics and Computer Science
• Czasopismo: International Journal of Microelectronics and Computer Science
• Rocznik: 2010
• Tom: Vol. 1, nr 2
• Strony: 112--119
• Opis fizyczny: Bibliogr. 8 poz.

Twórcy

autor

Carvalho C.

autor

Paulino N.

• Instituto Superior de Engenharia de Lisboa (ISEL-ADEETC), Instituto Politecnico de Lisboa (IPL), Rua Conselheiro Emidio Navarro, no1, 1949-014 Lisboa, PORTUGAL,

Bibliografia

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• [3] Chalasani, S.: Conrad, J.M , "A survey of energy harvesting sources for embedded systems," Southeastcon, 2008 IEEE , vol, no., pp.442-447, 3-6 April 2008.
• [4] Chandrakasan, A P.; Daly, D.C.; Kwong, J, Ramadass, Y.K. "New generation micro-power systems," VLSI Circuits, 2008 IEEE: Symposium on , vol., no., pp 2-5, 18-20 June 2008.
• [5] Guilar, N. J, Fong, E. G., Kleeburg, T, Yankelevich, D. R & Amirtharajah, R (2008), Energy harvesting photodiodes with integrated 2D diffractive storage capacitance, in 'ISLPED '08 Proceeding of the 13th international symposium on Low power electronics and design', ACM. New York. NY, USA, pp. 63-68.
• [6] Zhu, G. &. loinovici. A- (1996), Switched-capacitor power supplies DC voltage ratio, efficiency, ripple, regulation, in 'Proc. IEEE International Symposium on Circuits and Systems ISCAS '96., 'Connecting the World", pp. 553-556.
• [7] De Vita. G & lannaccone, G. (2007), 'A Sub-l-V, 10 ppm/oC. Nanopower Voltage Reference Generator', IEEE Journal of Solid-State Circuits 42(7), 1536-1542
• [8] Hui Shao, Chi-Ying Tsui; Wing-Hung Ki, "The Design of a Micro Power Management System for Applications Using Photovoltaic Cells With the Maximum Output Power Control," IEEE Transactions on Very Large Seals Integration (VLSI) Systems, vol.17, no.8, pp.1138-1142. Aug 2009.