This tutorial paper presents the concepts of sliding mode controller (SMC) and sliding mode observer(SMO) design for different DC/DC converters. Design and implementation aspects, using FPGA, of sliding mode controller and sliding mode observer for three basic topologies of DC/DC converters are discussed. Sliding Mode Control, an established technique for control and estimation, is implemented for three different converters. To make the system sensor-less hence, cost effective, Sliding Mode Observer is used. FPGA tool is used to implement the sliding mode controller along with sliding mode observer. © 2014 IEEE.