Melexis MLX91218LDC-ARV-501-RE

The MLX91218 is a monolithic Hall-effect sensor utilizing the IMC-Hall® technology. The sensor provides an analog output voltage proportional to the applied magnetic flux density parallel to the IC surface. The transfer characteristic of the MLX91218 is factory trimmed over temperature, and is programmable (offset, sensitivity, filtering, internal overcurrent threshold) during end-of-line customer calibration. With the 400kHz bandwidth and fast response time, it is particularly adapted for high speed applications such as inverters and converters where fast response time due to fast switching is required. In a typical current sensing application, the sensor is used in combination with a U-shaped shield which facilitates the mechanical assembly of the current sensor over traditional ferromagnetic cores. This shield is recommended to be laminated for high bandwidth applications. The MLX91218 can then be mounted over the bus bar and separated from it by the PCB. As the shield does not serve the primary purpose of concentration, it can be made smaller and lighter than ferromagnetic cores without losing signal thanks to the integrated magnetic concentrator (IMC). As a result, dense power electronics can be achieved enabling system savings and surface mount assembly.

• IMC-Hall® Technology
• Very High Field and Extra High Field variants
• End-of-line programmable sensor
• Flexible Supply Voltage with factory selectable 5V or 3.3V mode
• Selectable analog output: Ratiometric or fixed (Vref)
• Measurement range from ±8 to ±333mT
• Wideband sensing: DC to 400kHz
• Very short response time (2μs)
• High linearity down to ±0.5% full scale
• AEC-Q100 – Grade 0 Automotive Qualified
• Very low thermal drift for wide temperature range
  • Offset drift (<5mV)
  • Sensitivity drift (<1.5%)
• Dual overcurrent detection
  • Internal threshold
  • External threshold
• RoHS compliant
• SOIC-8 package
• MSL-3

• Redundant monitoring of battery management system (BMS)
• High Voltage Traction Motor Inverter: Phase and DC link current measurement
• 48V Boost Recuperation Inverter
  • Phase current measurement
  • DC link current measurement
• DCDC Converter
• Smart Battery Junction Boxes
• Smart Fuse Overcurrent Detection