An adaptive segment output stage with dual-mode control in DC-DC converter

Author

Jianluo Chen ; Yu Geng Ping Luo

Author_Institution

State Key Lab. of Electron. Thin Films & Integrated Devices, Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

2

fYear

2013

fDate

15-17 Nov. 2013

Firstpage

374

Lastpage

377

Abstract

An adaptive segment output stage with dual-mode control in DC-DC converter is proposed. According to the load current, optimizing width of the power MOSFET facilitates enhancing conversion efficiency. Specially, in order to improve the efficiency at very light load conditions, PSM controller is included in system which can switch dynamically based on the load current. A dual-mode buck DC-DC converter with the adaptive segment output stage is designed and simulated in a 0.13μm standard CMOS process. The simulation results show that the maximum efficiency improvement of the converter with adaptive segment reaches 5.3% at 15mA compared to converter without segment.

Keywords

CMOS integrated circuits; DC-DC power convertors; MOSFET; load regulation; voltage control; PSM controller; adaptive segment output stage; current 15 mA; dc-dc converter; dual-mode buck DC-DC converter; dual-mode control; load current; power MOSFET; standard CMOS process; voltage regulation loop; voltage-mode control loop; CMOS process; MOSFET; Pulse width modulation; Simulation; Switches; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems (ICCCAS), 2013 International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4799-3050-0

Type

conf

DOI

10.1109/ICCCAS.2013.6765360

Filename

6765360