Mechanism Analysis of the Overcurrent and Overvoltage Protection Module for Communication

The mechanism of the overcurrent and overvoltage protection module—YD-CLP200M under different protecting modes such as overvoltage,positive surge overcurrent and negative surge overcurrent is analyzed,and the internal equivalent circuits corresponding to structural parameters of the device are given.According to different structural parameters,the I-V characteristics of the switching-on voltage and the positive surge switching-on current are simulated by using MEDICI device simulation tool,whose results indicate the dominating factors that affect these DC parameters,from which we can get adjusting method on structural parameters to optimize the device's DC characteristics.