Title :
A novel technique to enhance the stability and the supply rejection of a Miller compensated LDO
Author :
Sinoussi, Nabil M. ; Elsayed, Ayman M.
Author_Institution :
Si-Ware Syst., Cairo, Egypt
Abstract :
A novel technique is utilized to enhance the power supply rejection of a Miller compensated LDO. The frequency compensation tracks the load variations in order to conserve stability across the whole load current range. From a minimum supply of 2.7 V, the LDO provides a regulated 2.4 V output, for a load range of 0-2 mA. The improvement in the supply rejection is at least 10 dB at 2 mA load. At no load, the supply rejection improved by 26 dB. The LDO is simulated using AMS-0.35 ¿m technology.
Keywords :
compensation; controllers; power supplies to apparatus; voltage regulators; LDO; Miller compensation; current 2 mA; frequency compensation; low drop-out; power supply rejection; voltage 2.4 V; Capacitors; Circuit simulation; Circuit stability; Energy management; Frequency; Impedance; Load management; Power supplies; Power system management; Voltage;
Conference_Titel :
Design and Test Workshop (IDT), 2009 4th International
Conference_Location :
Riyadh
Print_ISBN :
978-1-4244-5748-9
DOI :
10.1109/IDT.2009.5404116
