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http://dx.doi.org/10.7471/ikeee.2017.21.3.264

Low Drop Out Regulator with Ripple Cancelation Circuit  

Kim, Chae-Won (Dept. of Electronics and Electrical Engineering, DanKook Unversity)
Kwon, Min-Ju (Dept. of Electronics and Electrical Engineering, DanKook Unversity)
Jung, Jun-Mo (Dept. of Electronics Engineering, Seokyeong Unversity)
Publication Information
Journal of IKEEE / v.21, no.3, 2017 , pp. 264-267 More about this Journal
Abstract
In this paper, A low dropout (LDO) regulator that improves the power supply rejection ratio by using a noise canceling circuit is proposed. The noise rejection circuit between the error amplifier and the pass transistor is designed to reduce the influence of the pass transistor on the noise coming from the voltage source. The LDO regulator has the same regulation characteristics as the conventional LDO regulator. The proposed circuit uses 0.18um process and Cadence's Virtuoso and Specter simulator.
Keywords
LDO; PSRR; Ripple cancleation; line regulation; load regulation;
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