Title :
Design of a digital power IC
Author :
Chang, Wei-Hsu ; Tai, Liang-Pin
Author_Institution :
Richtek Technol. Corp., Chupei, Taiwan
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;
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
DOI :
10.1109/VDAT.2010.5496687
