Title :
A single-inductor dual-output integrated DC/DC boost converter for variable voltage scheduling
Author :
Ma, Dongsheng ; Ki, Wing-Hung ; Tsui, Chi-ying ; Mok, Philip K T
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., China
Abstract :
An integrated boost DC/DC converter that provides two different outputs with a 1.8 V input using only one inductor is presented. The converter works in discontinuous conduction mode and employs time division multiplexing in switching the inductor current to the two outputs. Synchronous rectification for high efficiency is implemented. Techniques for current sensing, inductor ringing suppression and controller design are discussed. At an oscillator frequency of 1 MHz, the conversion efficiency reaches 90% at 350 mW
Keywords :
CMOS integrated circuits; DC-DC power convertors; rectification; switching circuits; time division multiplexing; timing; 0.5 micron; 1 MHz; 1.8 V; 3 V; 3.45 V; 350 mW; 500 kHz; 90 percent; TDM; controller design; conversion efficiency; current sensing; discontinuous conduction mode; dual-output converter; inductor ringing suppression; integrated DC/DC boost converter; single-inductor configuration; synchronous rectification; time division multiplexing; variable voltage scheduling; Circuit topology; DC-DC power converters; Diodes; Inductors; Oscillators; Switches; Switching converters; Time division multiplexing; Timing; Voltage;
Conference_Titel :
Design Automation Conference, 2001. Proceedings of the ASP-DAC 2001. Asia and South Pacific
Conference_Location :
Yokohama
Print_ISBN :
0-7803-6633-6
DOI :
10.1109/ASPDAC.2001.913268
