Next Article in Journal
Action Recognition Using Deep 3D CNNs with Sequential Feature Aggregation and Attention
Previous Article in Journal
DSFTL: An Efficient FTL for Flash Memory Based Storage Systems
Previous Article in Special Issue
A 6-Bit Ku Band Digital Step Attenuator with Low Phase Variation in 0.13-μm SiGe BiCMOS
Open AccessFeature PaperArticle

A Low-Dropout Regulator with PSRR Enhancement through Feed-Forward Ripple Cancellation Technique in 65 nm CMOS Process

1
Division of Electronics and Electrical Engineering, Dongguk University, Seoul 04620, Korea
2
Jung-Dong Park, Division of Electrical and Electronics Engineering, Dongguk University, Seoul 04620, Korea
*
Author to whom correspondence should be addressed.
Electronics 2020, 9(1), 146; https://doi.org/10.3390/electronics9010146
Received: 31 December 2019 / Revised: 9 January 2020 / Accepted: 10 January 2020 / Published: 12 January 2020
(This article belongs to the Special Issue Microwave Integrated Circuits Design and Application)
In this paper, a low-dropout (LDO) regulator with an enhanced power supply rejection ratio (PSRR) is proposed with a feed-forward ripple cancellation technique (FFRC) in 65 nm CMOS technology. This technique significantly improves the PSRR over a wide range of frequencies, compared to a conventional LDO regulator. The LDO regulator provides 35–76.8 dB of PSRR in the range of 1 MHz–1 GHz, which shows up to 30 dB of PSRR improvement, compared with that of the conventional LDO regulator. The implemented LDO regulator has a dropout voltage of 0.22 V and a maximum load current of 20 mA. It can also provide an output voltage of 0.98 V at a range of 1–1.3 V of the input voltage. The load regulation is 2.3 mV/mA while the line regulation is 0.05 V/V. The circuit consumes 385 μA with an input voltage of 1.2 V. The total area without pads is 0.092 mm2. View Full-Text
Keywords: CMOS; LDO; low dropout; power supply rejection ratio; regulation CMOS; LDO; low dropout; power supply rejection ratio; regulation
Show Figures

Figure 1

MDPI and ACS Style

Choe, Y.-J.; Nam, H.; Park, J.-D. A Low-Dropout Regulator with PSRR Enhancement through Feed-Forward Ripple Cancellation Technique in 65 nm CMOS Process. Electronics 2020, 9, 146.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop