Start-up circuit for low-power indoor light energy harvesting applications
Data(s) |
07/11/2013
07/11/2013
09/05/2013
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Resumo |
A start-up circuit, used in a micro-power indoor light energy harvesting system, is described. This start-up circuit achieves two goals: first, to produce a reset signal, power-on-reset (POR), for the energy harvesting system, and secondly, to temporarily shunt the output of the photovoltaic (PV) cells, to the output node of the system, which is connected to a capacitor. This capacitor is charged to a suitable value, so that a voltage step-up converter starts operating, thus increasing the output voltage to a larger value than the one provided by the PV cells. A prototype of the circuit was manufactured in a 130 nm CMOS technology, occupying an area of only 0.019 mm(2). Experimental results demonstrate the correct operation of the circuit, being able to correctly start-up the system, even when having an input as low as 390 mV using, in this case, an estimated energy of only 5.3 pJ to produce the start-up. |
Identificador |
CARVALHO, C.; PAULINO, N. - Start-up circuit for low-power indoor light energy harvesting applications. Electronics Letters. ISSN 0013-5194. Vol. 49, nr. 10 (2013), p. 669-670. 0013-5194 10.1049/el.2012.3418 |
Idioma(s) |
eng |
Publicador |
Inst Engineering Technology-IET |
Direitos |
restrictedAccess |
Palavras-Chave | #Start-up circuit #Low-power indoor |
Tipo |
article |