Pulse Train control technique for Flyback converter

Pulse Train[TM] control technique is introduced and applied to Flyback converter operating in discontinuous conduction mode (DCM). In contrast to the conventional pulse width modulation (PWM) control scheme, the principal idea of Pulse Train is to achieve output voltage regulation using high and low power pulses. The proposed technique is applicable to any converter operating in DCM. However, this work mainly focuses on Flyback topology. In this paper, the main mathematical concept of the new control algorithm is introduced and simulations as well as experimental results are presented. Index Terms--Critical conduction mode, dc--dc power converters, discontinuous conduction mode, flyback converter, near-zero-voltage switching, switch mode power supplies.