Design of a digital power IC

Author

Chang, Wei-Hsu ; Tai, Liang-Pin

Author_Institution

Richtek Technol. Corp., Chupei, Taiwan

fYear

2010

fDate

26-29 April 2010

Firstpage

41

Lastpage

44

Abstract

To satisfy today´s power demands of a VLSI chip, the digital power IC has been designed in order to have more programmability, faster transient response and higher efficiency. Thank to the advance of the semiconductor manufacturing process. It has enabled the ability to integrate the power MOSFET, the analog and the digital circuits into one chip. In this paper, a 12V, 2A digital synchronous DC-DC buck converter IC with the nonlinear control (NLC) to improve the transient response and the pulse-skipping mode (PSM) to improve the power conversion efficiency has been designed and fabricated. The I2C is provided to let the host controller in-situ program and monitor the operating conditions of the IC. Both the loading current and the operating mode transient response of the IC have been demonstrated.

Keywords

DC-DC power convertors; digital integrated circuits; nonlinear control systems; power MOSFET; power conversion; power integrated circuits; transient response; analog circuits; current 2 A; digital circuits; digital power IC; digital synchronous DC-DC buck converter IC; nonlinear control; power MOSFET; power conversion efficiency; pulse-skipping mode; semiconductor manufacturing process; transient response; voltage 12 V; Buck converters; Digital circuits; Digital integrated circuits; MOSFET circuits; Manufacturing processes; Power MOSFET; Power demand; Power integrated circuits; Transient response; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI Design Automation and Test (VLSI-DAT), 2010 International Symposium on

Conference_Location

Hsin Chu

Print_ISBN

978-1-4244-5269-9

Electronic_ISBN

978-1-4244-5271-2

Type

conf

DOI

10.1109/VDAT.2010.5496687

Filename

5496687