Sampled-data modeling and dynamical effect of output-capacitor time-constant for valley voltage-mode controlled buck-boost converter
Zhou Shu-Han, Zhou Guo-Hua, Zeng Shao-Huan, Leng Min-Rui, Xu Shun-Gang
       

(color online) Bifurcation diagrams with the variation of C: (a) iL versus C; (b) vo versus C.