RT Journal Article
T1 Low-Voltage CMOS Capacitor-Less LDOs: Bulk-Driven Versus Gate-Driven Comparative Study
A1 Pereira Rial, Óscar
A1 Carrillo, Juan M.
A1 López Martínez, Paula
K1 Voltage control
K1 Noise measurement
K1 Transistors
K1 Resistors
K1 Low voltage
K1 Regulators
K1 Logic gates
K1 MOS devices
AB This paper explores the feasibility of a capacitor-less (CL) low-dropout (LDO) regulator to operate efficiently in a low-voltage environment. The CL-LDO scheme selected is based on a unity-gain feedback configuration around the error amplifier (EA), so that the inclusion of high-value on-chip resistors is avoided and different key parameters, such as the power supply rejection or the noise, are optimized. A comparative analysis has been carried out over the same LDO structure including a bulk-driven and a gate-driven EA, respectively. The pass branch of the voltage regulator is provided with pseudo-class-AB operation, in order to lead to a very small quiescent current in the standby operation mode, whereas a very large current can be delivered to the load when required. Both regulators were designed and fabricated in 180 nm CMOS technology to operate with a maximum supply voltage of 1.8 V. The extensive experimental characterization showed that the bulk-driven LDO can achieve a significantly lower minimum supply voltage, i.e., 0.6 V, as compared to the gate-driven counterpart, 1 V, under the same reference voltage and load current conditions.
PB Institute of Electrical and Electronics Engineers
SN 1549-8328
YR 2024
FD 2024-08-16
LK https://hdl.handle.net/10347/39824
UL https://hdl.handle.net/10347/39824
LA eng
NO Ó. Pereira-Rial, J. M. Carrillo, & P. López. (2024). Low-voltage CMOS capacitor-less LDOs: Bulk-driven versus gate-driven comparative study. IEEE Transactions on Circuits and Systems I: Regular Papers, 71(11), 5329–5338. 10.1109/TCSI.2024.3440842
NO This work was supported in part by the MCIN/AEI/10.13039/501100011033 and FEDER and European Union NextGenerationEU/PRTR (Grant Number: PID2021-128009OB-C32 and TED2021-132372B-I00) European Regional Development Fund: Xunta de Galicia-Consellería de Cultura, Educación e Ordenación Universitaria Accreditation 2019–2022 (Grant Number: ED431G-2019/04) Reference Competitive Group Accreditation 2021–2024 (Grant Number: GRC2021/48)
DS Minerva
RD 24 abr 2026