Title :
New CMOS integrated pulse width modulator for voltage conversion applications
Author :
Djemouai, A. ; Sawan, M. ; Slamani, M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Ecole Polytech. de Montreal, Que., Canada
Abstract :
We propose in this paper a new architecture of a CMOS integrated pulse width modulator (PWM) used to control the duty-cycle of square waveforms. The architecture of the proposed PWM is based mainly on an improved voltage controlled-delay line (VCDL) which requires a very small integrated area. The first version of this PWM allows duty-cycle control range of 0% to 50%, and the second version with duty-cycle control this range from 0% to 100%. The two versions of the proposed PWM are dedicated for the control of the power level of switching power amplifiers and are suitable for integrated DC-DC voltage conversion applications. Hspice simulation results show that the proposed PWM is able to achieve a large duty-cycle control range with high resolution
Keywords :
CMOS analogue integrated circuits; DC-DC power convertors; PWM power convertors; SPICE; delay lines; modulators; CMOS integrated pulse width modulator; DC-DC voltage conversion; HSPICE simulation; duty cycle control; power level control; square waveform; switching power amplifier; voltage controlled delay line; Application software; Circuits; Delay; Digital modulation; Frequency; Pulse amplifiers; Pulse width modulation; Signal resolution; Space vector pulse width modulation; Voltage control;
Conference_Titel :
Electronics, Circuits and Systems, 2000. ICECS 2000. The 7th IEEE International Conference on
Conference_Location :
Jounieh
Print_ISBN :
0-7803-6542-9
DOI :
10.1109/ICECS.2000.911498
