Method for designing diodes

摘要

A method of designing a diode includes generating a layout of the diode and calculating a calculated voltage overshoot based on the layout. The calculating includes calculating variables of: the length of an N region of the diode; current density during an ESD event; electron charge; hole mobility; electron mobility; doping concentration of the diode; and rise time of the ESD event.

主权项

1. A method of designing a circuit for suppressing electrostatic discharge, the method comprising:
generating a first layout including a first diode; calculating a first calculated voltage overshoot of the first diode based on the first layout and first variables of: a length of an N region of the first diode; current density during an ESD event; electron charge; hole mobility; electron mobility; a doping concentration of the first diode; and a rise time of the ESD event; generating a second layout including a second diode; calculating a second calculated voltage overshoot of the second diode based on the second layout and second variables of: a length of an N region of the second diode; the current density during the ESD event; the electron charge; the hole mobility; the electron mobility; a doping concentration of the second diode; and the rise time of the ESD event, wherein an anode of the first diode is coupled to a cathode of the second diode; and determining whether the first and second calculated voltage overshoots meet a predetermined threshold.