0.6-V-V IN 7.0-nA-I Q 0.75-mA-I L CMOS Capacitor-Less LDO for Low-Voltage Micro-Energy-Harvested Supplies
In: IEEE Transactions on Circuits and Systems I: Regular Papers, Jg. 69 (2022-02-01), S. 599-608
Online
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Zugriff:
A capacitor-less (CL) low-dropout (LDO) regulator suitable to be incorporated in an on-chip system with low-voltage micro-energy-harvested supply, is proposed in this contribution. The differential input stage of the error amplifier includes bulk-driven MOS transistors, thus providing the LDO with an output voltage range that extends from the negative rail up to a level very close to the input voltage without the need of using a resistive feedback network. The circuit parameters relying on the feedback factor, β, are maximized thanks to the use of a unitary value for this parameter. The CL-LDO has been designed and fabricated in standard 180-nm CMOS technology and optimized to operate with an input voltage equal to 0.6 V and a reference level of 0.5 V. The experimental characterization of the fabricated prototypes shows that, under these operating conditions, the LDO is able to deliver a load current above 0.75 mA with a total quiescent current of only 7.0 nA. Furthermore, the proposed voltage regulator is able to operate from input voltages as low as 0.4 V, delivering in this case a maximum load current of 30 μA.
Titel: |
0.6-V-V IN 7.0-nA-I Q 0.75-mA-I L CMOS Capacitor-Less LDO for Low-Voltage Micro-Energy-Harvested Supplies
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Autor/in / Beteiligte Person: | Lopez, Paula ; Pereira-Rial, Oscar ; Carrillo, Juan M. |
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Zeitschrift: | IEEE Transactions on Circuits and Systems I: Regular Papers, Jg. 69 (2022-02-01), S. 599-608 |
Veröffentlichung: | Institute of Electrical and Electronics Engineers (IEEE), 2022 |
Medientyp: | unknown |
ISSN: | 1558-0806 (print) ; 1549-8328 (print) |
DOI: | 10.1109/tcsi.2021.3123057 |
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