Title :
ON chip LDO voltage regulator with improved transient response in 180nm
Author :
Rao, Patri Sreehari ; Prasad, Krishna K S R
Author_Institution :
Chip Design Center, Nat. Inst. of Technol., Warangal
Abstract :
An ON chip LDO voltage regulator is presented in this paper with improved transient response. The sluggish nature of pass transistor mandates techniques to improve transient ripple and settling time against sudden load transients. An independent fast path is employed that facilitates the LDO to respond quickly to the sudden load variations. This enables reduction in the consequent ripple in the output voltage. The fast path is designed in such a way that it provides easy migration to the other process without much degradation in the performance. The proposed LDO is designed to provide a constant voltage of 1.2V and is implemented in UMC 1.8 mu CMOS technology. It features peak overshoot as low as 60 mV and very fast settling time of 6 musec.
Keywords :
CMOS integrated circuits; transient response; voltage regulators; CMOS technology; on chip LDO voltage regulator; settling time; transient response; transient ripple; voltage 1.2 V; Battery management systems; CMOS technology; Current supplies; Energy management; Low voltage; Power supplies; Power system management; Regulators; Transient response; Voltage control;
Conference_Titel :
Electronic Design, 2008. ICED 2008. International Conference on
Conference_Location :
Penang
Print_ISBN :
978-1-4244-2315-6
Electronic_ISBN :
978-1-4244-2315-6
DOI :
10.1109/ICED.2008.4786743
