A versatile low-dropout voltage regulator for automotive applications

Author

Pietri, Stefano ; Dao, Chris ; Refaeli, Jehoda ; Olmos, Alfredo ; Wu, Xiaolei

Author_Institution

Freescale Semicond., Microcontroller Solutions Group, Austin, TX, USA

fYear

2011

fDate

15-18 May 2011

Firstpage

41

Lastpage

44

Abstract

In an effort to build versatile automotive Micro Controller Units (MCU´s), power management has been integrated into the last generation SoC, with the additional benefits of simplifying board design and lowering the cost of bill of materials. In this paper we present a novel architecture for a 5 V to 3.3 V linear voltage regulator which can operate in dual mode: regulator controller, when an external ballast transistor is present; regulator mode, when a compensating capacitor is present. The circuit is being fabricated in CMOS 55 nm technology with non volatile memory process extension, occupies 0.05 mm2, and dissipates 1 mA current plus load.

Keywords

automotive electronics; microcontrollers; voltage regulators; SoC; automotive applications; compensating capacitor; micro controller units; non volatile memory process extension; power management; regulator controller; regulator mode; size 55 nm; versatile low-dropout voltage regulator; voltage 5 V to 3.3 V; Capacitance; Gain; Load modeling; Regulators; System-on-a-chip; Transistors; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2011 IEEE International Symposium on

Conference_Location

Rio de Janeiro

ISSN

0271-4302

Print_ISBN

978-1-4244-9473-6

Electronic_ISBN

0271-4302

Type

conf

DOI

10.1109/ISCAS.2011.5937496

Filename

5937496