Electro-Thermal Mixed-Mode Analysis of HV Complementary DD-SCR’s

A complementary HV dual-direction SCR design is presented and studied using electro-thermal mixed-mode analysis. Numerical simulation of triggering, conductivity modulation effects, transient operation under HMM pulse and multi-finger current balancing effects is used to understand the operating principles and optimize the new dual-direction protection approach based on complementary P- and N- DDSCR subcells.