  We study cosmological dynamics of a canonical bulk scalar field in the DGP
setup within a superpotential approach. We show that the normal branch of this
DGP-inspired model realizes a late-time de Sitter expansion on the brane. We
extend this study to the case that the bulk contains a phantom scalar field.
Our detailed study in the supergravity-style analysis reveals some yet
unexplored aspects of cosmological dynamics of bulk scalar field in the normal
DGP setup. Some clarifying examples along with numerical analysis of the model
parameter space are presented in each case.
