Melexis MLX91218 Low Field IMC-Hall® Current Sensor

Melexis MLX91218 Low Field (LF) IMC-Hall® Current Sensor Integrated Circuit (IC) is designed for lower current applications (below 100A), making it ideal for electric vehicle (EV) charging cables, micro-grids, and smart energy monitoring in residential and small industrial power distribution units. The non-intrusive technology is also suitable for clamp-on measurement applications. This AxL-version sensor provides a measurement range for current from 1A to 200A. Melexis MLX91218 Low Field (LF) IMC-Hall Current Sensor IC offers a 400kHz bandwidth and 2µs response time, enabling small current changes to be detected at high speed. The sensor ensures accurate measurement in a range of operating environments thanks to its low noise, high linearity (±0.5% full scale), and low thermal drift across a wide temperature range. The module features a SOIC-8 (DC) package that is RoHS compliant.

Features

  • Designed for lower current applications
  • Dual overcurrent detection
    • Internal threshold
    • External threshold
  • 5V mode and 3.3V mode flexible supply voltage (factory selectable)
  • Ratiometric or fixed selectable analog output (Vref)
  • High speed
    • DC to 400kHz bandwidth
    • 2µs response time
  • Measurement range for current from 1A to 200A
  • Low noise
  • IMC-Hall technology
    • Smaller, lighter solution than conventional Hall solutions.
    • Easy mechanical integration
    • Vertical stacking possible with existing control boards (PCBs)
  • End-of-line programmable sensor
  • High linearity down to ±0.5% full scale
  • Ultra-low thermal drift for wide temperature range
    • <5mV offset drift
    • <1.5% sensitivity drift
  • RoHS-compliant SOIC-8 (DC) package, MSL 3
  • AEC-Q100 Grade 0 automotive qualified

Applications

  • Smart battery junction boxes
  • Smart fuse overcurrent detection
  • High voltage traction inverters (HV)
    • Phase current measurement
    • DC-link current measurement
  • Redundant monitoring of battery-management system (BMS)
  • DC-DC converters
  • 48V boost-recuperation inverters
    • Phase current measurement
    • DC-link current measurement

Magnetic Specification

Chart - Melexis MLX91218 Low Field IMC-Hall® Current Sensor

LF Overview

Infographic - Melexis MLX91218 Low Field IMC-Hall® Current Sensor

Block Diagram

Block Diagram - Melexis MLX91218 Low Field IMC-Hall® Current Sensor

Videos

Paskelbta: 2025-03-31 | Atnaujinta: 2025-05-30