B. Lehman et Rm. Bass, SWITCHING FREQUENCY-DEPENDENT AVERAGED MODELS FOR PWM DC-DC CONVERTERS, IEEE transactions on power electronics, 11(1), 1996, pp. 89-98
This paper introduces a new averaging method for PWM de-de converters
which yields averaged models that are switching frequency dependent. T
he new models are obtained by using periodic ripple functions to impro
ve the averaging approximation. Two important benefits are the correct
ion of de offset error in steady-state and the modeling of switching f
requency effects on closed-loop performance and stability.