Small-signal analysis of a synchronous-switch post regulator with coupled inductors

A small-signal model of the synchronous-switch post regulator with coupled inductors is developed. Performance variations of the synchronous switch post regulator due to different coupling coefficients are investigated. Comparison of the multiple-output converter using the technique of post regulation with the multiple-output converter using the scheme of weighted-mode control is also discussed. Experiments are given to verify the validity of the proposed small-signal model.