Design of integrated current sensor for lateral IGBT power devices

The integration of current sensor in power devices is generally an important feature when the devices undergoing design are to be used fur advanced power electronic applications. This brief, for the first time, proposes a design of integrated current sensor for lateral insulated-gate bipolar transistor (LIGBT) power devices. The sensor is able to provide a constant lateral current sensing ratio over the wide variations of operating current density and gate voltage. A small variation in the sensing ratio was also achieved over normal operating temperature range of 250-150 K