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Fully-integrated Ldo Voltage Regulator for Digital Circuits : Volume 9, Issue 18 (01/08/2011)

By Lüders, M.

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Book Id: WPLBN0003983603
Format Type: PDF Article :
File Size: Pages 5
Reproduction Date: 2015

Title: Fully-integrated Ldo Voltage Regulator for Digital Circuits : Volume 9, Issue 18 (01/08/2011)  
Author: Lüders, M.
Volume: Vol. 9, Issue 18
Language: English
Subject: Science, Advances, Radio
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2011
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Eversmann, B., Schmitt-Landsiedel, D., Brederlow, R., & Lüders, M. (2011). Fully-integrated Ldo Voltage Regulator for Digital Circuits : Volume 9, Issue 18 (01/08/2011). Retrieved from http://www.ebooklibrary.org/


Description
Description: Munich University of Technology, Munich, Germany. Low-dropout (LDO) voltage regulators are widely used to supply low-voltage digital circuits. For recent ultra-low-power microcontroller systems, a fully-integrated LDO without any external capacitance is preferred in order to achieve a fast and energy-efficient wake-up.

Commonly, an LDO is specified, designed and verified for DC load currents. In contrast, a digital load creates large current spikes. As an LDO designed for low quiescent current is too slow to react on fast current spikes, a minimum on-chip capacitance is required to keep the supply voltage within a certain error window. Different fully-integrated LDO topologies are investigated regarding their suitability to supply low-voltage digital circuits. The any-load stable LDO topology is selected and implemented on a 0.13 μm test-chip. The LDO is able to provide a maximum load current of 2.5 mA while consuming a quiescent current of 17 μA.


Summary
Fully-integrated LDO voltage regulator for digital circuits

Excerpt
Zwerg, M., Baumann, A., Kuhn, R., Arnold, M., Nerlich, R., Herzog, M., Ledwa, R., Sichert, C., Rzehak, V., Thanigai, P., and Eversmann, B.: An 82 μA/MHz Microcontroller with Embedded FeRAM for Energy-Harvesting Applications, IEEE ISSCC 2011, 334–335, 2011.; Kristjansson, E.: ARM7 Low Power Design, White Paper www.microcontroller.com/ARM7_Low_Power_Design_-_White_Paper.htm, November 2006.; Guo, J. and Leung, K.: A 6 μW Chip-Area-Efficient Output-Capacitorless LDO in 90-nm CMOS Technology, IEEE JSSC, 45(9), 1896–1905, 2010.; Popovich, M., Friedman, E., Secareanu, R., and Hartin, O.: Efficient placement of distributed on-chip decoupling capacitors in nanoscale ICs, IEEE ICCAD 2007, 811–816, 2007.; Leung, K. and Mok, P.: A capacitor-free CMOS low-dropout regulator with damping-factor-control frequency compensation, IEEE JSSC, 38(10), 1691–1702, 2003.; Ivanov, V.: Design Methodology and Circuit Techniques for Any-Load Stable LDOs with Instant Load Regulation and Low Noise, Analog Circuit Design, 339–358, 2009.; Thandri B. and Silva-Martinez, J.: A robust feedforward compensation scheme for multistage operational trans-conductance amplifiers with no Miller capacitors, IEEE JSSC, 38(2), 237–243, 2003.; Ramirez-Angulo, J., Gupta, S., Padilla, I., Carvajal, R., Torralba, A., Jimenez, M., and Munoz, F.: Comparison of conventional and new flipped voltage structures with increased input/output signal swing and current sourcing/sinking capabilities, IEEE MWSCAS 2005, 2, 1151–1154, 2005.

 

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