RT Journal Article
T1 Ultra-Low-Power Low-Input-Voltage Charge Pump for Micro-Energy Harvesting Applications
A1 Pereira Rial, Óscar
A1 Cabrini, Alessandro
A1 Torelli, Guido
A1 López Martínez, Paula
A1 Carrillo, Juan M.
K1 charge-pump
K1 gate voltage boosting
K1 low-power
K1 low voltage
K1 subthreshold
K1 switched capacitor DC-DC converter
AB A subthreshold input voltage charge pump based onthe well-known cross-coupled voltage doubler and using boostedgate voltages for the transfer switches is presented. A levelshifter and some inverters, including a novel inverter architectureproposed in this work and referred to as negative low-statevoltage inverter, are used to generate the clock signals for theswitching transistors with the purpose of significantly improvingtheir drive capability. A complete analysis of the proposed chargepump is provided to highlight the advantages of the implementedstructure, revealing the power efficiency improvement when theinput voltage is below the threshold voltage of the transistors.An extensive experimental characterization of silicon prototypesin 180 nm CMOS technology was carried out, showing that theproposed scheme is able to pump charge from an input voltage aslow as 110 mV. The experimental peak efficiency remains above70% for input voltages between 180 mV and 400 mV and inputpower levels from 45 nW to 25 μW, which are appropriate fordifferent miniaturized transducers implementable on chip.
PB IEEE
SN 1558-0806
YR 2022
FD 2022-11-02
LK http://hdl.handle.net/10347/32655
UL http://hdl.handle.net/10347/32655
LA eng
NO Ó. Pereira-Rial, A. Cabrini, G. Torelli, P. López and J. M. Carrillo, "Ultra-Low-Power Low-Input-Voltage Charge Pump for Micro-Energy Harvesting Applications," in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 70, no. 1, pp. 154-165, Jan. 2023, doi: 10.1109/TCSI.2022.3217124
NO RTI2018-095994-B-I00, ED431G-2019/04, GRC2021/48, IB18079
DS Minerva
RD 30 abr 2026