MLX91219 High-Speed Hall Current Sensors

Melexis MLX91219 High-Speed Hall Current Sensors are high-accuracy, monolithic Hall-effect sensors that are sensitive to the flux density applied orthogonally to the IC surface. These sensors provide an analog output voltage proportional to the applied magnetic flux density. The MLX91219 components simplify module designs with a dual Over Current Detection (OCD) functionality, a flexible 3.3V/5V supply, and an improved SNR. With the hall technology, using a ferromagnetic core, currents can be measured in the ranges of 200A to beyond 2000A. The transfer characteristics of the MLX91219 are factory trimmed over-temperature and are programmable (offset, sensitivity, filtering, internal overcurrent threshold) during end-of-line customer calibration beyond the default factory trimming by Melexis. With the 400kHz bandwidth and fast response time, it is particularly well suited for high-speed applications such as inverters and converters characterized by their fast switching.