Open AccessA Hybrid-Mode LDO Regulator with Fast Transient Response Performance for IoT applications
Author(s) -
Said El Mouzouade,
Karim El Khadiri,
Zakia Lakhliai,
Driss Chenouni,
Ahmed Tahiri
Publication year - 2021
Publication title -
wseas transactions on power systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.165
H-Index - 14
eISSN - 2224-350X
pISSN - 1790-5060
DOI - 10.37394/232016.2021.16.27
Subject(s) - low dropout regulator , dropout voltage , transient response , power supply rejection ratio , voltage regulator , regulator , cascode , biasing , cmos , voltage , integrator , operational amplifier , load regulation , materials science , amplifier , control theory (sociology) , electrical engineering , optoelectronics , engineering , computer science , chemistry , biochemistry , control (management) , artificial intelligence , gene
A hybrid-mode low-drop out (LDO) voltage regulator with fast transient response performance for IoT applications is proposed in this paper. The proposed LDO regulator consist of two sections. First section is an analog regulator which includes a folded cascode operational amplifier to achieve good PSRR. Second section is current DAC and detectors whitch includes a cource current DAC, sink current DAC, undershoot detectors, and overshoot detectors. The current DAC and detectors are designed to obtain a low drop out and fast transient response. The proposed hybrid-mode LDO voltage regulator has been designed, simulated and layouted in Cadence using TSMC 90 nm CMOS technology. The input range of the LDO regulator is 1.2–2.0 V, and it can produces an output voltage of 1.2V. The LDO regulator achieves 58uA quiescent current, -69 PSRR @ 1 KHz noise frequency and an output voltage drop of around 60mV for a load current step of 100 mA. The final design occupies approximately 0.09 mm2.