Integrated non-inverting buck-boost DC-DC converter with average-current-mode control

Author

Chin-Hong Chen ; Chia-Ling Wei ; Kuo-Chun Wu

Author_Institution

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

fYear

2012

fDate

3-4 Oct. 2012

Firstpage

6

Lastpage

9

Abstract

With the increasing use of electrical portable devices, an efficient power management solution is needed to extend the battery life. Generally, basic switching regulators, such as buck and boost converters, are not capable of using the entire battery output voltage range. In this work, a non-inverting buck-boost dc-dc converter which can use the full-range output voltage (i.e., 2.5-4.7 V) of a Li-ion battery is proposed. Moreover, average-current-mode control is adopted to improve noise immunity. The die area of this chip is 1.9×1.7mm², and it was fabricated by using TSMC 0.35μm 2P4M 5V mixed-signal polycide process. The input range of the converter is 2.5-5 V, and its output is set to 3.3V. It can supply up to 300 mA load current.

Keywords

DC-DC power convertors; electric current control; mixed analogue-digital integrated circuits; secondary cells; switching convertors; Li; Li-ion battery; TSMC 2P4M mixed-signal polycide process; average-current-mode control; basic switching regulators; battery life; current 300 mA; electrical portable devices; integrated noninverting buck-boost DC-DC converter; noise immunity; power management solution; size 0.35 mum; voltage 2.5 V to 5 V; Batteries; Clocks; Inductors; Noise; Phase change materials; Switches; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ICCAS), 2012 IEEE International Conference on

Conference_Location

Kuala Lumpur

Print_ISBN

978-1-4673-3117-3

Electronic_ISBN

978-1-4673-3118-0

Type

conf

DOI

10.1109/ICCircuitsAndSystems.2012.6408275

Filename

6408275