A peak-current controlled single-inductor dual-output DC-DC buck converter with a time-multiplexing scheme

Author

Chang, Wei-Hsun ; Wang, Jia-Hui ; Tsai, Chien-Hung

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan

fYear

2010

fDate

26-29 April 2010

Firstpage

331

Lastpage

334

Abstract

This paper presents a peak current-controlled (PCC) single-inductor dual-output (SIDO) DC-DC buck converter with a time-multiplexing (TM) scheme. Small signal modeling, system compensation, and circuit implementation are discussed. Simulation and measurements confirm the effectiveness of the proposed method. The converter was fabricated using TSMC 0.35-μm CMOS technology. The input supply voltage is from 2.7~4.2V. Two outputs are specified at 2.5V/36mA and 1.8V/20mA, respectively, and operated at 500 KHz with a 1-μH inductor and 20-μF capacitors.

Keywords

CMOS integrated circuits; DC-DC power convertors; circuit simulation; electric current control; multiplexing; CMOS; capacitance 20 muF; current 20 mA; current 36 mA; dual output DC-DC buck converter; peak current control; single inductor DC-DC buck converter; size 0.35 mum; small signal modeling; time multiplexing scheme; voltage 1.8 V; voltage 2.5 V; Buck converters; CMOS technology; Circuits; Clocks; Inductors; Paramagnetic resonance; Phase control; Semiconductor device modeling; Switching converters; Timing; Buck; Peak-current Control; SIDO; Ttime-multiplexing;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI Design Automation and Test (VLSI-DAT), 2010 International Symposium on

Conference_Location

Hsin Chu

Print_ISBN

978-1-4244-5269-9

Electronic_ISBN

978-1-4244-5271-2

Type

conf

DOI

10.1109/VDAT.2010.5496756

Filename

5496756