A Frequency Compensation Scheme for LDO Voltage Regulators Academic Article

abstract

• A stable low dropout (LDO) voltage regulator topology for low equivalent series resistance (ESR) capacitive loads is presented. The proposed scheme generates a zero internally instead of relying on the zero generated by the load capacitor and its ESR combination for stability. It is demonstrated that this scheme realizes robust frequency compensation, facilitates the use of multilayer ceramic capacitors for the load of LDO regulators, and improves transient response and noise performance. Test results from a prototype fabricated in AMI 0.5-m CMOS technology provide the most important parameters of the regulator viz., ground current, load regulation, line regulation, output noise, and start-up time.

authors

• Silva-Martinez, Jose

published proceedings

• IEEE Transactions on Circuits and Systems I Regular Papers

altmetric score

• 12

author list (cited authors)

• Chava, C. K., & Silva-Martnez, J.

citation count

• 192

complete list of authors

• Chava, Chaitanya K||Silva-Martínez, José

publication date

• June 2004

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• n1057-7130ISSN  Journal

Digital Object Identifier (DOI)

• 10.1109/tcsi.2004.829239

start page

• 1041

end page

• 1050

volume

• 51

issue

• 6

URL

• http://dx.doi.org/10.1109/tcsi.2004.829239