This paper presents a simple input-constrained current controller for a DC/DC boost converter with stability analysis that considers
the nonlinearity of the converter model. The proposed controller is designed to satisfy the inherent input constraints of the converter
under a physically reasonable assumption, which is the first contribution of this paper. The second contribution is providing a
rigorous proof of the proposed control law, which keeps the closed-loop system along with the internal dynamics stable. The
performance of the proposed controller is demonstrated through an experiment employing a 20-㎾ DC/DC boost converter.