High-conversion-ratio buck regulator for SoC in 0.13µm digital CMOS process

Author

Lou, Jiana ; Sun, Yueming ; Wu, Xiaobo ; Zhao, Menglian

Author_Institution

Inst. of VLSI Design, Zhejiang Univ., Hangzhou, China

fYear

2010

fDate

15-17 Dec. 2010

Firstpage

1

Lastpage

4

Abstract

Aiming to SoC (System-on-Chip) power supply in portable devices, a high-conversion-ratio buck regulator is proposed. The operation duty cycle is expanded to 100% due to the emulated current mode. The 2.5 V to 4.5 V input voltage range makes it ideally suited for single cell Li-Ion battery supplied devices. The range of output voltage is from 1.2 V to input voltage accord to different kinds of SoC IP cores. At the same time, a high efficiency light load operation is introduced in to prolong battery lifetime. To obtain good compatibility with digital systems, the proposed buck regulator is designed in SMIC 0.13 μm standard digital CMOS process (the I/O can withstand an input voltage up to 4.6 V). The simulation results are consistent with expectations well.

Keywords

power convertors; system-on-chip; SoC; digital CMOS process; high-conversion-ratio buck regulator; size 0.13 mum; voltage 2.5 V to 4.5 V; Inductors; Power supplies; Regulators; Simulation; Switches; System-on-a-chip; Voltage control; System-on-Chip; emulated current mode; integrated circuit; power management;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices and Solid-State Circuits (EDSSC), 2010 IEEE International Conference of

Conference_Location

Hong Kong

Print_ISBN

978-1-4244-9997-7

Type

conf

DOI

10.1109/EDSSC.2010.5713706

Filename

5713706