Dynamic behaviour and Z-transform stability analysis of DC/DC regulators with a non linear P.W.M. control loop

The local dynamic stability of a PWM buck regulator has been investigated theoretically for the continuous conducting mode and with the aid of an analogue computer simulation for the discontinuous one. A parametric study of the main factors influencing the design and the stability of the control loop has been performed. The discontinuous conducting mode appears to be the most promising.