250 kHz High accuracy Conventional Hall current sensor IC with improved diagnostics

MLX91217

The MLX91217 is part of the Gen 2.5 high speed current sensor IC portfolio, targeting primarily inverter/converter applications. With the Conventional Hall technology - using an external ferromagnetic core for signal concentration - currents can be measured in the range of ±50 A to ±5000 A. The magnetic flux density inside the airgap of the core is measured with embedded Hall-effect technology and amplified to a 5 V full-scale ratiometric and fast analog output. The novel CMOS Hall-effect sensor is offered with different factory trimmed offset, sensitivity and filtering settings, but are customer programmable using the Melexis programming equipment PTC-04.

The main changes over the Gen 2 MLX91209 are:

  • Higher accuracy
    • Thermal offset drift of ±5 mV (50% improvement)
    • Thermal sensitivity drift of ±1% (33% improvement)
  • Improved diagnostics
    • Broken Wire detection
    • Programmable output clamping levels
  • Extended on-chip filtering

The SIP4-VA package allows for insertion of the sensing elements into tight slots of the core, and several Trim&Form options of the sensor leads provide designers with higher flexibility for mechanical integration & assembly.

The following factory trim variants are available:

  • MLX91217LVA-ACA-000 with 10 mV/mT sensitivity and bipolar output around 2.5 V
  • MLX91217LVA-ACA-003 with 9 mV/mT sensitivity and bipolar output around 2.5 V
  • MLX91217LVA-ACA-005 with 13 mV/mT sensitivity and bipolar output around 2.5 V
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Top features

  • Measurement range ±15 to ±450 mT

  • High accuracy

  • Fast response time < 3 μs

  • AEC-Q100 Grade 0 qualified

  • Broken wire diagnostics & clamping

  • Programmable gain, offset, filtering, clamping, …

  • Fast analog ratiometric output

  • Wideband: DC to 250kHz

  • Trim&Form options available

  • 48bit unique ID for traceability
Discover all features
250 kHz High accuracy Conventional Hall current sensor IC with improved diagnostics - MLX91217

Features and benefits

  • Measurement range ±15 to ±450 mT

  • High accuracy

  • Fast response time < 3 μs

  • AEC-Q100 Grade 0 qualified

  • Broken wire diagnostics & clamping

  • Programmable gain, offset, filtering, clamping, …

  • Fast analog ratiometric output

  • Wideband: DC to 250kHz

  • Trim&Form options available

  • 48bit unique ID for traceability

Videos

Hall-effect current sensors offering enhanced performance and diagnostics

Product

In this video, Bruno Boury, Product Line Manager Magnetic Sensing at Melexis, introduces the latest Hall-effect-based current measuring solutions draw upon Melexis’ extensive experience in this area, with millions of devices sold.

Inspired Engineering