DocumentCode
2994388
Title
The Analysis of LDO and the Stability of Loop Compensation
Author
Wang, Xuewen ; Wang, Fengge ; Li, Zhongwei
Author_Institution
Inst. of Microelectron., Northwest Univ., Xi´´an, China
fYear
2010
fDate
25-27 June 2010
Firstpage
4368
Lastpage
4371
Abstract
This paper discusses loop compensation methods of LDO. We especially analyze the LDO loop op-amp module, PMOS adjustment module, resistor feedback module. Moreover, the zero-pole compensation, feed-forward compensation and ESR compensation are adopted simultaneously to compensate LDO. This article simulates the designed LDO system with the CSMC 0.5um CMOS technical model. The system can meet the stability requirements under the load capacitance of 0.1uF.
Keywords
CMOS integrated circuits; operational amplifiers; voltage regulators; CMOS; ESR compensation; LDO loop op-amp module; PMOS adjustment module; capacitance 0.1 muF; feed-forward compensation; loop compensation stability; low dropout voltage regulator; resistor feedback module; size 0.5 micron; zero-pole compensation; Capacitors; Circuit stability; Integrated circuit modeling; Load modeling; Poles and zeros; Resistance; Stability analysis; ESR Compensation; LDO; Miller compensation; feed-forward compensation; stability of compensation;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrical and Control Engineering (ICECE), 2010 International Conference on
Conference_Location
Wuhan
Print_ISBN
978-1-4244-6880-5
Type
conf
DOI
10.1109/iCECE.2010.1061
Filename
5630582
Link To Document