Digital Pulse Width Modulation Controlled DC-DC Buck Converter using VHDL Coding

Abstract

This paper presents the control of the DC-DC Buck converter using Digital Pulse Width Modulation (DPWM) methods in MATLAB-SIMULINK using XILINX TOOL. The conventional PWM is compared with the Digital Pulse Width Modulation. The DPWM generators like Counter based Digital Pulse Width Modulation (CDPWM); Delay-line based Digital Pulse Width Modulation (DDPWM) and Hybrid based Digital Pulse Width Modulation (HDPWM) are coded using VHDL. The DPWM generator is used for the control and analysis of the DC-DC Buck converter. The time transient analysis of the DPWM techniques are evaluated and compared.