A Comprehensive Review on FPGA based PWM techniques for DC-DC converters

Abstract

Pulse Width Modulation (PWM) modules are immensely significant in the design of real power converters. Mainly, the variable duty cycle pulses generated from the PWM module vary the average dc voltages across the load in the power converter circuits. All the regulator and dc/dc converter ICs include the clock, MOSFET switch and the PWM control module apart from the external components such as resistor, inductor and capacitor, diodes, and the transformers. In this review article, the five different PWM generation methods include using a free-running counter, up/down counter, hardware accumulator, two de-bounced push button switches and swapping bits method. The PWM wave generation modules are implemented on an Altera FPGA device using Quartus II synthesis software tool. The performance metrics such as the logic elements (LEs) utility, the clock speed, and the power dissipation are analyzed in detail. Also, Matlab/Simulink and the DSCH/Microwind tools are used to generate the PWM wave.