Comments on “Design of practical sliding-mode controllers with constant switching frequency for power converters”

This note comments some results in the paper “Design of practical sliding-mode controllers with constant switching frequency for power converters”, Int. J. Electric Power Syst. Res. 79 (2009) 796–802.

► We comment published results on robust control of DC–DC converters.
► Used suppositions in theoretical development are contradictory with DC–DC converters functioning principle.
► Obtained robustness is judged as weak.