PSRR Enhanced LDO Regulator Using Noise Sensing Circuit
In this paper, we presented the LDO (low-dropout) regulator which enhanced the PSRR by applying the constant current source generation technique through the BGR (Band Gap Reference) to form the noise sensing circuit. The current source through the BGR has a constant current value even if the applied voltage varies. Then, the noise sensing circuit, which is composed of the current source through the BGR, operated between the error amplifier and the pass transistor gate of the LDO regulator. As a result, the LDO regulator has a PSRR of -68.2 dB at 1k Hz, -45.85 dB at 1 MHz and -45 dB at 10 MHz. the other performance of the proposed LDO was maintained at the same level of the conventional LDO regulator.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.3455721Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 79
 Al-Shyoukh, M.; Hoi Lee; Perez, R, “A Transient-Enhanced Low-Quiescent Current Low-Dropout Regulator with Buffer Impedance Attenuation,” Solid-State Circuits, IEEE Journal of, vol. 42, pp. 1732–1742, Aug. 2007.
 Pui Ying Or and Ka Nang Leung, “An Output-Capacitorless Low-Dropout Regulator With Direct Voltage-Spike Detection”, IEEE J. Solid-State Circuits , vol. 45, no. 2, pp. 458-466, Feb. 2010.
 X. Ming, Q. Li, Z. Zhou and B. Zhang, “An ultrafast adaptively biased capacitorless LDO with dynamic charging control,” IEEE Tran. Circuits, Syst. II, vol. 59, no. 1, pp. 40-44, Jan. 2012.
 Leo, C.J., M.K. Raja, and J. Minkyu, "An ultra low-power capacitor-less LDO with high PSR," Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO), 2013 IEEE MTT-S International, 2013.
 Chang-Joon Park, “External Capacitor-less low drop-out regulator with 25 dB superior power supply rejection in the 0.4-4MHz range,” IEEE J. Solid-State Circuits, vol. 49, no. 2, pp. 486-501, Feb. 2014.
 Zishen, L., H. Lenian, and C. Chen, "A novel low-dropout regulator with large load current and high stability," Advanced Research and Technology in Industry Applications (WARTIA), 2014 IEEE Workshop, 2014.
 Saurabh Kumar Singh and Gautam Dey Kanungo, "Ultra-fast Cap-less LDO for Dual Lane USB in 28FDSOI," VLSI Design (VLSID), 2015 28th International Conference, 2015
 Kim, D. and M. Seok. "8.2 Fully integrated low-drop-out regulator based on event-driven PI control," 2016 IEEE International Solid-State Circuits Conference (ISSCC), 2016.
 Vaisband, I. and E.G. Friedman, "Stability of Distributed Power Delivery Systems With Multiple Parallel On-Chip LDO Regulators," IEEE Transactions on Power Electronics, Vol. 31, Issue:8, pp. 5625-5634, Aug. 2016
 Zarate-Roldan, J., et al., "A Capacitor-Less LDO With High-Frequency PSR Suitable for a Wide Range of On-Chip Capacitive Loads," IEEE Transactions on Very Large Scale Integration (VLSI) Systems, Vol.24, Issue:9, pp. 2970-2982, Sept. 2016
 Mohamed M. Elkhatib, "A capacitor-less LDO with improved transient response using neuromorphic spiking technique," Microelectronics (ICM), 2016 28th International Conference, 2016
 Jungeui Park; Wooju Jeong; Junsang Lee; Seok Lee; Jayang Yoon; Jaehoon Kim; Joongho Choi, “Design of LDO linear regulator with ultra low-output impedance buffer,” SoC Design Conference (ISOCC), 2009 International, pp. 420–423, Nov. 2009.
 Yongsheng Wang; Mingyan Yu; Xiaoxiong Feng; Fengchang Lai, “Frequency compensation scheme for LDO regulator operated under wide power supply range in smart battery system,” Electron Devices and Solid-State Circuits (EDSSC), 2011 International Conference of, pp. 1-2, Nov. 2011.
 Yong-Seo Koo; Kang-Yoon-Lee; Jae-Hwan Ha; Yil-Suk Yang. "A Design of Power Management IC for CCD Image Sensor" IKEEE, vol 13, no.4, pp. 63-68, 2009.
 Seong-Mok Yu; Joon-Ho Park; Jong-Tae Park; Chong-Gun Yu, "Design of Tripple-Mode DC-DC Buck Converter" IKEEE, vol 15, no.2, pp. 134-142, 2011.
 Xuguang Zhang; El-Masry, E.I., “A regulated body-driven CMOS current mirror for low-voltage applications,” Circuits and Systems II: Express Briefs, IEEE Transactions on, vol. 51, pp. 571-577, Oct. 2004.
 Rui He; Lihong Zhang, “Evaluation of modern MOSFET models for bulk-driven applications,” Circuits and Systems, 2008. MWSCAS 2008. 51st Midwest Symposium on, pp. 105-108, Aug. 2008.
 Khateb, F.; Biolek, D.; Khatib, N.; Vavra, J., “Utilizing the Bulk-driven technique in analog circuit design,” Design and Diagnostics of Electronic Circuits and Systems (DDECS), 2010 IEEE 13th International Symposium on, pp. 16-19, Apr. 2010.