An integrated electronic device forming a power device and including: a semiconductor body; a first conductive region and a second conductive region, which extend over the semiconductor body, the second conductive region surrounding the first conductive region at a distance; and an edge termination structure, which is arranged between the first and second conductive regions and includes a dielectric region, which delimits an active area of the power device, and a semiconductive structure, which extends over the dielectric region and includes a plurality of diode chains, each diode chain including a plurality of first semiconductive regions of a first conductivity type and a plurality of second semiconductive regions of a second conductivity type, the first and second semiconductive regions being arranged in alternating fashion so as to form a series circuit including a plurality of first and second diodes, which are spaced apart from one another and have opposite orientations.