A Fully-Integrated Switched-Capacitor Step-Down DC-DC Converter With Digital Capacitance Modulation in 45 nm CMOS
作者： Yogesh K. Ramadass , Ayman A. Fayed , Anantha P. Chandrakasan
DOI: 10.1109/JSSC.2010.2076550
关键词: Capacitor 、 Electronic engineering 、 Engineering 、 CMOS 、 Pulse-width modulation 、 Electrical engineering 、 Integrated circuit design 、 Switched capacitor 、 Capacitance 、 Integrated circuit 、 Power electronics
摘要: Implementing efficient and cost-effective power regulation schemes for battery-powered mixed-signal SoCs is a key focus in integrated circuit design. This paper presents fully-integrated switched-capacitor DC-DC converter 45 nm digital CMOS technology. The proposed implementation uses capacitance modulation instead of traditional PFM PWM control methods to maintain against load current changes. technique preserves constant frequency switching while also scaling bottom-plate losses with changes current. Therefore, high efficiency can be achieved across different levels maintaining predictable noise behavior. occupies only 0.16 mm2, operates from 1.8 V input. It delivers programmable sub-1 supply as 69% between 100 μA 8 mA. Measurement results confirm the theoretical basis
harvard.edu
sci-hub.se 参考文章(13)
Yogesh Kumar Ramadass, Energy processing circuits for low-power applications Massachusetts Institute of Technology. ,(2009)
Abraham Pressman, Switching Power Supply Design ,(1991)
Dragan Maksimovic, Robert Warren Erickson, Fundamentals of Power Electronics ,(1997)
Sridhar Kotikalapoodi, Lajos Burgyan, James S. Zeng, Digital loop for regulating dc/dc converter with segmented switching ,(2003)
Ka Nang Leung, Philip KT Mok, None, A capacitor-free CMOS low-dropout regulator with damping-factor-control frequency compensation IEEE Journal of Solid-state Circuits. ,vol. 38, pp. 1691- 1702 ,(2003) , 10.1109/JSSC.2003.817256
P. Hazucha, G. Schrom, Jaehong Hahn, B.A. Bloechel, P. Hack, G.E. Dermer, S. Narendra, D. Gardner, T. Karnik, V. De, S. Borkar, A 233-MHz 80%-87% efficient four-phase DC-DC converter utilizing air-core inductors on package IEEE Journal of Solid-state Circuits. ,vol. 40, pp. 838- 845 ,(2005) , 10.1109/JSSC.2004.842837
G. Patounakis, Y.W. Li, K.L. Shepard, A fully integrated on-chip DC-DC conversion and power management system IEEE Journal of Solid-state Circuits. ,vol. 39, pp. 443- 451 ,(2004) , 10.1109/JSSC.2003.822773
Yogesh Ramadass, Ayman Fayed, Baher Haroun, Anantha Chandrakasan, A 0.16mm 2 completely on-chip switched-capacitor DC-DC converter using digital capacitance modulation for LDO replacement in 45nm CMOS international solid-state circuits conference. pp. 208- 209 ,(2010) , 10.1109/ISSCC.2010.5433984
Ling Su, Dongsheng Ma, A. Paul Brokaw, A monolithic step-down SC power converter with frequency-programmable subthreshold z-domain DPWM control for ultra-low power microsystems european solid-state circuits conference. pp. 58- 61 ,(2008) , 10.1109/ESSCIRC.2008.4681791
Wim Kruiskamp, Rene Beumer, Low drop-out voltage regulator with full on-chip capacitance for slot-based operation european solid-state circuits conference. pp. 346- 349 ,(2008) , 10.1109/ESSCIRC.2008.4681863