Extraction of effective LDMOSFET channel length and its application to the modeling

The effective channel length of LD (lateral double diffused) MOSFET is accurately extracted and is applied to develop its circuit simulation model, which has the physical meaning of the channel length and so on. This model is consisted of a simple MOSFET, gate-voltage dependent resistor and three resistors. It is confirmed that the errors between the measured electrical characteristics and the calculated ones are less than 5 percent.