000153537 001__ 153537
000153537 005__ 20180913060029.0
000153537 0247_ $$2doi$$a10.1109/ESSCIR.2006.307508
000153537 022__ $$a1930-8833
000153537 02470 $$2ISI$$a000245212800129
000153537 037__ $$aCONF
000153537 245__ $$aNew error amplifier topology for Low Dropout Voltage regulators using compound OTA-OPAMP
000153537 260__ $$c2007
000153537 269__ $$a2007
000153537 336__ $$aConference Papers
000153537 500__ $$aTimes Cited: 2
000153537 500__ $$aEnz, C Declercq, M Leblebici, Y
000153537 500__ $$a32nd European Solid-State Circuits Conference
000153537 500__ $$aSep 19-21, 2006
000153537 500__ $$aMontreux, SWITZERLAND
000153537 500__ $$aExport Date: 19 January 2010
000153537 500__ $$aSource: Scopus
000153537 500__ $$aArt. No.: 4099822
000153537 500__ $$aReferences: Tantawy, R., Brauer, E.J., Performance Evaluation of CMOS Low Drop-Out Voltage Regulators (2004) The 47th IEEE International Midwest Symposium on Circuits and Systems; Endoh, T., et., al., An On-Chip 96.5% Current Efficiency CMOS Linear Regulator Using a Flexible Control Technique of Output Current (2001) IEEE Journal of Solid-State Circuits, 36 (1). , January; Larson, et., al., 'Low Dropout Voltage Regulator Circuit Including Gate Offset Servo Circuit Powered by Charge Pump' Patent No, US 6,188,212 B1. Feb. 13 2001Rincon-Mora, 'Current-Efficient Low-Drop-Out Voltage Regulator and Frequency Response' Patent No, US 6,188,211 B1. Feb. 13 2001Rincon-Mora, G., et., al., A low-Voltage, Low Quiescent Current Low Drop-Out Regulator (1998) IEEE Journal of Solid-State Circuits, 33 (1). , January; Rincon-Mora, G., et., al., Optimized FrequencyShaping Circuit Topologies for LDO's (1998) IEEE Transactions on circuits and systems, 45 (6). , June; Chester Simpson, National Semiconductor report- santa Clara, 'A User's Guide to compensating Low-Dropout Regulators'Alex Ka Nang Leung et. al. 'Damping-Factor-Control Frequency Compensation technique for Low-Voltage Low-Power Large Capacitive Load Applications', ISSCC99/Session 8/ Paper TA 8.7 PP 158Hazucha, P., An Area-Efficient, Integrated (2004) Linear Regulator with Ultra-Fast Load Regulation, Symposium, , On VLSI Circuits Digest of Technical Papers, IEEE; Fan, X., Sigle Miller Capacitor Frequency Compensation Technique for Low-Power Multistage Amplifiers (2005) IEEE Journal of Solide-State Circuits, 40 (3). , March; Chava, C.K., Silva-Martínez, J., A Frequency Compensation Scheme for LDO Voltage Regulators (2004) IEEE Transactions on Circuits and Systems, 51 (6). , JUNE; M. Kayal, ph. Deval, F. Vaucher, US_Patent, 20040246052, Load and line regulation using operational transconductance amplifier and operational amplifier in tandemwww.microchip.com, MCP7386X Data SheetUR - http://www.scopus.com/inward/record.url?eid=2-s2.0-39749133621&partnerID=40
000153537 520__ $$aTypical Low Dropout Voltage regulators (LDO), uses an error amplifier in a linear closed loop. The main advantage of such linear regulators is the low standby current due to the absence of switching. In addition, a fully integrated linear regulator with no external components is very attractive for applications with stringent area, low weight requirements and relatively small peak power. The architecture of error amplifier used in the feedback loop suffers from an inherent load regulation performance limitation. This limitation manifests itself through the limited DC open-loop gain, and results from limited closed-loop bandwidth. The frequency response of power supply loop is highly sensitive to the load conditions, thus, making proper compensation is a laborious effort. This paper discusses and addresses a new topology of an error amplifier offering a high open loop gain as well as a large band width by adding a zero to its transfer function. Proposed topology uses a compound OTA and OPAMP that enhances load regulation performance by relaxing the dc open-loop gain restrictions. An example of battery charger using this OpAmp topology is also described in this paper. This battery charger can be used as an LDO once the battery is not connected.
000153537 700__ $$0240539$$aKayal, M.$$g105540
000153537 700__ $$aVaucher, F.
000153537 700__ $$aDeval, P.
000153537 773__ $$q536-539$$tESSCIRC 2006: Proceedings of the 32nd European Solid-State Circuits Conference
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000153537 909CO $$ooai:infoscience.epfl.ch:153537$$pconf$$pSTI
000153537 937__ $$aEPFL-ARTICLE-153537
000153537 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000153537 980__ $$aCONF
000153537 981__ $$a153538