BIFURCATION CONTROL OF A BUCK CONVERTER IN DISCONTINUOUS CONDUCTION MODE

A nonlinear digital controller for improving the dynamical behavior of a buck converter operating in discontinuous conduction mode is presented. The aim is the extension of the operating range of the circuit, ameliorating the appearance of period-two orbits when the resistive load or the source voltage are varied. The controlled system is analyzed by using a frequency-domain technique. Numerical and experimental results are included to illustrate the performance of the system.