Addressing Overvoltage Protection for High Voltage Loads

Abstract

In most of the electrical systems mainly the damage is caused by overvoltage and excess current. This paper addresses the methods and issues related with the overvoltage protection for high voltage loads. If the voltage exceeds beyond the withstanding voltage capacity of the device it may damage it. The design and development of primary and secondary protection circuits are described. This includes use of IC MPS2400 for protecting the loads from damage due to overvoltage. This overvoltage protection controller is used with an external N-channel MOSFET to isolate the sensitive loads from destructive voltage spikes and surges. The Gate output voltage and Gate sourcing current are measured. Output Turn on response and Output turn off response are characterized. Results are discussed.