The influence of parasitic substrate diodes on load transient response of three-terminal adjustable voltage regulators

Author

Bajenaru, A. ; Radoias, L. ; Dilimot, G. ; Brezeanu, G.

Author_Institution

INFINEON Technol. Romania, Bucharest, Romania

Volume

2

fYear

2012

fDate

15-17 Oct. 2012

Firstpage

471

Lastpage

474

Abstract

This paper presents a detailed analysis of the influence of parasitic substrate diodes on the load transient response of three-terminal adjustable voltage regulators with the substrate connected to the output. Two simple solutions for improving the transient behaviour are then presented. A 1A voltage regulator was implemented in a single metal layer BCD technology. Using no additional chip area, the undershoot has been reduced from 250mV to less than 30mV, for an output voltage of 5V. The duration of the undershoot is accordingly reduced.

Keywords

diodes; transient response; voltage regulators; current 1 A; load transient response; parasitic substrate diodes; single metal layer BCD technology; three-terminal adjustable voltage regulators; transient behaviour improvement; voltage 5 V; Capacitors; Photonic band gap; Regulators; Substrates; Transient analysis; Transient response; Voltage control; parasitic substrate diodes; three-terminal adjustable voltage regulator; transient response;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Conference (CAS), 2012 International

Conference_Location

Sinaia

ISSN

1545-857X

Print_ISBN

978-1-4673-0737-6

Type

conf

DOI

10.1109/SMICND.2012.6400727

Filename

6400727