Title :
Flyback converter with voltage control mode on chip for portable applications
Author :
Nalla, Sri Lakshmi ; Hess, Herb L. ; Buck, Kevin M. ; Mentze, Erik J.
Author_Institution :
Microelectron. Res. & Commun. Inst., Idaho Univ., Moscow, ID
Abstract :
This paper introduces a compact, low power and submicron integrated DC-DC flyback converter designed for generating a constant desired output voltage. The proposed topology is designed to operate in continuous current mode operation at 1.25MHz. A PWM control scheme based on triangular waveform modulation is presented. The converter switch and voltage mode control system is fabricated in a standard 0.35mum CMOS technology. Energy storage and power isolation are off-chip. Synchronous rectification topology using MOSFET is implemented. The converter with voltage control mode is observed to generate a DC voltage of 3.3V with 0.08 ripple using CADENCE simulations
Keywords :
CMOS integrated circuits; DC-DC power convertors; PWM power convertors; current-mode circuits; low-power electronics; voltage control; 0.35 micron; 1.25 MHz; 3.3 V; CADENCE simulations; CMOS technology; DC voltage generation; DC-DC flyback converter; MOSFET; PWM control; continuous current mode operation; converter switch; energy storage; power isolation; regenerative comparator; synchronous rectification topology; triangular waveform modulation; voltage control mode; CMOS technology; DC-DC power converters; Energy storage; Isolation technology; Power generation; Pulse width modulation; Switches; Switching converters; Topology; Voltage control;
Conference_Titel :
Microelectronics and Electron Devices, 2005. WMED '05. 2005 IEEE Workshop on
Conference_Location :
Boise, ID
Print_ISBN :
0-7803-9072-5
DOI :
10.1109/WMED.2005.1431627
