A novel SCR ESD protection structure with low-loading and latchup immunity for high-speed I/O pad

A novel SCR device "Latchup-free gate-couple LVTPSCR (LFGCPSCR)" has been proposed to act as an efficient ESD protection device with low loading effect. With the proper control circuit, the trigger voltage under normal operation can be high up to 14V, providing excellent immunity to Latchup. Under ESD events, this novel SCR device could trigger fast and provide an effective discharging path for ESD.