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http://dx.doi.org/10.7471/ikeee.2020.24.2.598

A Low Drop Out Regulator with Improved Load Transient Characteristics and Push-Pull Pass Transistor Structure  

Kwon, Sang-Wook (Department of Electronics and Electrical Engineering, Dankook University)
Song, Bo Bae (Department of Electronics and Electrical Engineering, Dankook University)
Koo, Yong-Seo (Department of Electronics and Electrical Engineering, Dankook University)
Publication Information
Journal of IKEEE / v.24, no.2, 2020 , pp. 598-603 More about this Journal
Abstract
In this paper present a Low Drop-Out(LDO) regulator that improves load transient characteristics due to the push-pull pass transistor structure is proposed. Improved load over the existing LDO regulator by improving the overshoot and undershoot entering the voltage line by adding the proposed push-pull circuit between the output stage of the error amplifier inside the LDO regulator and the gate stage of the pass transistor and the push-pull circuit at the output stage. It has a delta voltage value of transient characteristics. The proposed LDO structure was analyzed in Samsung 0.13um process using Cadence's Virtuoso, Spectre simulator.
Keywords
LDO regulator; Load Transient Response; Capless; Load Regulation;
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