Regulador LDO en Tecnología CMOS Completamente Integrado Basado en Multiplicador de Capacidad en Modo Corriente (Fully-Integrated CMOS LDO Regulator Based on an Embedded Current-Mode Capacitor Multiplier)

Alireza Saberkari (, Herminio Martínez García (, Rasoul Fathipour (, Eduard Alarcón Cot (

1University of Guilan
2Technical University of Catalonia (UPC-BarcelonaTech)

This paper appears in: Revista IEEE América Latina

Publication Date: April 2015
Volume: 13,   Issue: 4 
ISSN: 1548-0992

This article presents a fully-integrated CMOS output-capacitorless low-dropout voltage regulator (LDO). A capacitor multiplier based on a current-mode amplifier is embedded into the error amplifier of the aforementioned LDO to simultaneously enhance the dynamic specifications to load variations, stability by pole splitting, and power saving. The proposed LDO topology is designed and post simulated using a 0.35 µm CMOS process to deliver a load current between 0-100 mA. The dropout voltage of the LDO is set to 200 mV for 2-3.5 V input voltage. A final benchmark comparison considering all relevant performance metrics is presented.

Index Terms:
Current-Mode Amplifier, Embedded Capacitor Multiplier, Error Amplifier, Fast Transient, Low-Dropout Regulator, Output-Capacitorless   

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