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) Movements of eigenvalues for valley voltage-mode controlled buck-boost converter: (a) loci of eigenvalues when C = 940 μF and RC varies from 19.5 mΩ to 18.9 mΩ; (b) loci of eigenvalues when RC = 19 mΩ and C varies from 960 μF to 930 μF. Arrows indicate the directions of movements of the eigenvalues with decreasing RC and C.