A synchronous buck-boost converter on a Silicon-On-Sapphire 0.5µm process

Author

George, Libin ; Lehmann, T. ; Hamilton, Tara J.

Author_Institution

Sch. of Electr. Eng. & Telecommun., Univ. of New South Wales, Sydney, NSW, Australia

fYear

2012

fDate

2-5 Dec. 2012

Firstpage

348

Lastpage

351

Abstract

This paper presents the design of a synchronous non-inverting buck-boost DC-DC converter on a Silicon-on-Sapphire (SOS) 0.5μm process. The converter uses voltage-mode feedback and PWM control to regulate the power delivered to a range of output voltages and loads. The circuit has been simulated using Cadence and its performance has been measured. The converter has an output voltage range of 1.2-4V and can deliver up to 750 mA. It is up to 92% efficient with a maximum ripple voltage of 80mV and uses significantly less die area than similar converters on standard CMOS processes.

Keywords

CMOS integrated circuits; DC-DC power convertors; PWM power convertors; circuit feedback; circuit simulation; silicon-on-insulator; CMOS process; Cadence; PWM control; SOS; circuit simulation; maximum ripple voltage; output load; output voltage; power regulation; silicon-on-sapphire; size 0.5 mum; synchronous noninverting buck-boost DC-DC converter; voltage 1.2 V to 4 V; voltage 80 mV; voltage-mode feedback; CMOS integrated circuits; Logic gates; Pulse width modulation; Silicon; Standards; Substrates; Voltage control; SOS; buck-boost; synchronous;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (APCCAS), 2012 IEEE Asia Pacific Conference on

Conference_Location

Kaohsiung

Print_ISBN

978-1-4577-1728-4

Type

conf

DOI

10.1109/APCCAS.2012.6419043

Filename

6419043