Design and Analysis of Pulse width Modulator (PWM) using Low Input Impedance Current Comparator

Abstract

In this paper a new design of a simple pulse width modulator is presented. The proposed scheme has 3mW average power consumption which is less than the existing PWM methods. This circuit is also suitable for IC implementation. The simulation results are carried out under the implementation of TSMC 0.35μm CMOS process with 1.8V power supply. This method is commonly used for driving motors, heaters, or lights in varying intensities or speeds. The simulation and experimental results are shown in this paper. It is also suitable for high power applications as well as ordinary low power use, while possessing important advantages. Pulse-width (PW) modulation has been widely used to convert analog (or multibit digital) signals to binary streams.