Title :
A novel frequency compensation technique for low-voltage low-dropout regulator
Author :
Leung, Ka Nang ; Mok, Philip K T ; Ki, Wing Hung
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong
Abstract :
A novel frequency compensation technique for low-voltage low-dropout regulator (LDR) is presented. The proposed technique, called pole-control frequency compensation (PCFC), provides faster loop response and does not require a large filtering capacitor. Both theoretical analysis and simulation show that the stability of the LDR using PCFC is independent of the load current, temperature and equivalent series resistance of the filtering capacitor. LDRs are well suited to portable equipment such as cellular phones, pagers and personal digital assistants
Keywords :
circuit stability; compensation; low-power electronics; stability criteria; voltage regulators; LV low-dropout regulator; cellular phones; filtering capacitor; frequency compensation technique; loop response; low-voltage regulator; pagers; personal digital assistants; pole-control frequency compensation; portable equipment; stability; Capacitors; Cellular phones; Circuit stability; Filtering; Frequency; Paramagnetic resonance; Poles and zeros; Regulators; Temperature; Voltage;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.777521
