A new single-inductor triple-output buck converter using CMOS technology

Author

Chen, Jiann-Jong ; Zheng, Chuan-Hong ; Hwang, Yuh-Shyan

Author_Institution

Dept. of Electron. Eng., Nat. Taipei Univ. of Technol., Taipei, Taiwan

fYear

2010

fDate

21-24 June 2010

Firstpage

82

Lastpage

85

Abstract

A new single-inductor triple-output (SITO) buck converter using CMOS technology is presented in this paper. A new time multiplexing scheme is also proposed for control. This SITO DC-DC buck converter uses only one inductor to provide three independent output voltages. The output voltages of 2.5 V, 1.65 V, and 0.8 V are designed from a 3.6 V power supply. A maximum efficiency of 77.4% is achieved at a total output power of 460 mW, with a switching frequency of 1 MHz. The proposed SITO buck converter circuit has been fabricated with TSMC 0.35 μm 2P4 M CMOS technology, and the active chip area including I/O pad is 1.53 mm × 1.79 mm.

Keywords

CMOS integrated circuits; DC-DC power convertors; SITO DC-DC buck converter; SITO buck converter circuit; TSMC 2P4M CMOS technology; frequency 1 MHz; power 460 mW; single-inductor triple-output buck converter; size 0.35 mum; time multiplexing scheme; voltage 0.8 V; voltage 1.65 V; voltage 2.5 V; voltage 3.6 V; Buck converters; CMOS technology; Circuits; Costs; DC-DC power converters; Multiplexing; Power supplies; Pulse width modulation; Pulse width modulation converters; Voltage; CMOS technology; DC-DC buck converter; single-inductor triple-output (SITO);

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Conference (IPEC), 2010 International

Conference_Location

Sapporo

Print_ISBN

978-1-4244-5394-8

Type

conf

DOI

10.1109/IPEC.2010.5543837

Filename

5543837