Title :
A capacitor-free fast-transient-response LDO with dual-loop controlled paths
Author :
Chen, Jiann-Jong ; Yang, Fong-Cheng ; Kung, Che-Min ; Lai, Bao-Peng ; Hwang, Yuh-Shyan
Author_Institution :
Nat. Taipei Univ. Technol., Taipei
Abstract :
A capacitor-free fast-transient-response low-dropout voltage regulator (LDO) with dual-loop controlled paths is presented in this paper. This technique can make the transient response to be faster than other LDOs with traditional controlled loop. Especially, the performance of settling time of proposed LDO is excellent without off-chip capacitors. With 1.5 V power supply voltage, the output voltage is designed as 1.2V. The prototype of the LDO is fabricated with TSMC 0.35-mum DPQM CMOS processes. The active area is only 360 mum times 345 mum.
Keywords :
CMOS integrated circuits; transient response; voltage regulators; DPQM CMOS; capacitor-free fast-transient-response; dual-loop controlled paths; low-dropout voltage regulator; off-chip capacitors; size 0.35 mum; size 345 mum; size 360 mum; transient response; voltage 1.2 V; voltage 1.5 V; Analog circuits; Capacitors; Low voltage; Operational amplifiers; Power amplifiers; Power supplies; Power transistors; Regulators; Transient response; Voltage control; low dropout voltage regulator; transient response; voltage regulator;
Conference_Titel :
Solid-State Circuits Conference, 2007. ASSCC '07. IEEE Asian
Conference_Location :
Jeju
Print_ISBN :
978-1-4244-1359-1
Electronic_ISBN :
978-1-4244-1360-7
DOI :
10.1109/ASSCC.2007.4425706
