Independent PICs designers that use these CMOS technologies will face foundry IC process confidentiality.In fact, only design rules and a few aspects of electrical rules are available. Details of process parameters, such as n-well, field and threshold voltage adjustment implants concentrations and energies, drive-in time and temperature, etc.,are part of restricted documentation, not accessible fordesign purposes outside the foundry. Designing semiconductor
devices without approximate values for crosssection dimensions and process parameters (i.e. substrate resistivity, diffusions and implants doping profiles, distance between layers above silicon and corresponding thickness) requires a high number of test structures per prototype and
long prototyping cycles, together with a significant increase of development phase cost. Thus, it is crucial to find, at least, an approximation of the above mentioned characteristics, in order to reduce cost and time in the development of new HV solutions for CMOS technology, either resorting to two-dimensional simulators or to analytical models.