Analysis of SCR based ESD Protection Circuit with High Robustness for Low Voltage Application
Thisstudyproposes the robust SCR-based ESD protection circuit with fast turn-on speed for low voltage
application. The proposed circuit has the additional P-well and P+ region that forms the additional parasitic PNP BJT in
parallel.To evaluate the electrical properties, the simulation is conducted by the Synopsys TCAD simulator. The simulation
results show that the proposed circuit has the fast turn-on time and high ESD robustnesscompared with the PTSCR(PSubstrate
Keywords - ESD(Electro-Static Discharge), SCR(Silicon Controlled Rectifier), I/O Clamp.