Title :
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
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;
Conference_Titel :
Semiconductor Conference (CAS), 2012 International
Conference_Location :
Sinaia
Print_ISBN :
978-1-4673-0737-6
DOI :
10.1109/SMICND.2012.6400727
