MLX91220/MLX91221 Isolated Integrated Current Sensors (0 A to 50 A)

The MLX91220 (5 V) and MLX91221 (3.3 V) offer output mode flexibility defined at Melexis factory trimming. Automotive applications typically prefer ratiometric analog output voltages, whereas industrial applications often rely on fixed sensitivity built around a reference voltage. The output mode is factory trimmed and selectable with intuitive product ordering codes. Unlike most current sensors, the MLX91220 (5 V) and MLX91221 (3.3 V) do not rely on ferromagnetic concentrators. Instead, they use an internal differential sensing concept to detect the magnetic field generated by the integrated primary conductor. This differential concept also provides a high level of stray field immunity, enabling higher density power electronics as the sensor is less affected by stray magnetic fields in close proximity.