This paper presents an optimized manufacturing approach for a single-leg N-level cascaded H-bridge multilevel inverter, focusing on increasing the integration rate of its elements. By employing heterostructures composed of substrates and epitaxial layers, the proposed method incorporates doping techniques such as diffusion and ion implantation, followed by annealing processes to manage dopants and radiation defects. This strategy enables the reduction of element dimensions while maintaining high density and efficiency in integrated circuits. The paper further analyzes the dynamics of defect redistribution during annealing and introduces techniques to refine the manufacturing process for enhanced performance of bipolar heterotransistors.