Feedback compensator design for a two-switch forward converter

Advantages of a two-switch forward converter over its single-switch counterpart are that it operates with reduced voltage stress on power semiconductor switches and does not require a transformer with a reset winding. The lower stress on the switching devices leads to increased reliability and, without the reset windings, the transformer production is simplified. In this paper, feedback compensator design for a two-switch forward converter is presented. A Proportional-plus-Integral (PI) compensator is chosen for its simplicity. Experimental results confirm that the properly designed PI compensator is capable of providing the satisfying output voltage regulation and transient response.