A New Controller for DC-DC Converters Based on Sliding Mode Control Techniques

A new general sliding mode controller is proposed for a DC–DC converter that can regulate the output voltage. Due to the nature of some non-minimum phase converters, an indirect method is used to control the output voltage. A robust nonlinear controller is employed that uses the output voltage error integral and provides zero steady-state error. The proposed method was simulated in MATLAB/Simulink, and the controller, buck converter, boost, buck/boost, and flyback responses were determined. The proposed sliding mode control can cover the operating range of load variations, input voltage, and other parameters to provide robust and steady output voltage.