A monolithic CMOS step-down DC-DC converter

Author

Lin, Yeong-Tsair ; Chung, Wen-Yaw ; Wu, Dong-Shiu ; Wang, Hung-Chan ; Lin, Hung-Yih ; Chen, Jiann-Jong

Author_Institution

Dept. of Electron. Eng., Chung Yuan Christian Univ., Chung-Li

fYear

2005

fDate

7-10 Aug. 2005

Firstpage

448

Abstract

A monolithic CMOS switch-mode step-down power converter, with on-chip PWM technique, has been designed and implemented. Also, a micropower bandgap reference generator is developed for the dc-dc converter. This power converter occupied a chip area of 880times1040 mum² is fabricated in a 2P4M 0.35-mum CMOS process. The simulation results show that the converter is well regulated over an output range from 1.0 to 2.2 V, with a supply voltage 3.3 V. The maximum efficiency of the converter is 94 %, and its efficiency is kept above 85 % over an output power ranging from 100 to 900 mW

Keywords

CMOS integrated circuits; DC-DC power convertors; PWM power convertors; reference circuits; 0.35 micron; 1.0 to 2.2 V; 100 to 900 mW; 3.3 V; CMOS DC-DC converter; bandgap reference generator; micropower reference generator; monolithic DC-DC converter; on-chip PWM technique; step-down DC-DC converter; CMOS technology; Circuits; Consumer electronics; DC-DC power converters; Frequency; Photonic band gap; Power generation; Pulse width modulation; Pulse width modulation converters; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2005. 48th Midwest Symposium on

Conference_Location

Covington, KY

Print_ISBN

0-7803-9197-7

Type

conf

DOI

10.1109/MWSCAS.2005.1594134

Filename

1594134