Title :
A novel current-mode boost converter with depletion-mode MOSFET
Author :
Cheng, Pengming ; Zhang, Bo ; Qiao, Ming
Author_Institution :
Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A compact current-mode boost converter for battery-operated portable devices is presented in this paper. With the help of depletion-mode MOSFET, the chip´s volume reduces and input voltage extends from 2.5 V to 10 V. Using a 0.5 mum BCD process, the maximum efficiency of this converter can reach 90% at fixed frequency 1.4 MHz. In addition, a single input error amplifier and dead-time control circuit for this design are proposed in the paper. The simulation results and measures verify the function of the proposed structure.
Keywords :
amplifiers; current-mode circuits; portable instruments; power MOSFET; power convertors; BCD process; battery-operated portable devices; current-mode boost converter; dead-time control circuit; depletion-mode MOSFET; efficiency 90 percent; frequency 1.4 MHz; single-input error amplifier; size 0.5 mum; voltage 2.5 V to 10 V; Computational modeling; Digital control; Digital signal processing; Feedforward systems; Inductors; MOSFET circuits; Phase distortion; Reactive power; Signal processing algorithms; Voltage control;
Conference_Titel :
Communications, Circuits and Systems, 2009. ICCCAS 2009. International Conference on
Conference_Location :
Milpitas, CA
Print_ISBN :
978-1-4244-4886-9
Electronic_ISBN :
978-1-4244-4888-3
DOI :
10.1109/ICCCAS.2009.5250415
