400kHz Conventional Hall current sensor IC with dual overcurrent detection

MLX91219

The MLX91219 is a high-speed high-accuracy conventional hall current sensor simplifying module designs with a dual OverCurrent Detection (OCD) functionality, a flexible supply 3.3V/5V and an improved SNR.

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Top features

  • Dual overcurrent detection

    • Internal threshold

    • External threshold (SOIC8 package)

  • Flexible Supply Voltage

    • 5V mode and 3.3V mode (factory selectable)

  • Selectable analog output

    • Ratiometric or fixed (Vref)

  • High speed

    • DC to 400 kHz bandwidth

    • 2µs response time

  • Measurement range

    • 200 to beyond 2000 A

  • Low noise

  • End-of-line programmable sensor

  • High linearity down to ±0.3% full scale

  • Very low thermal drift for wide temperature range

    • Offset drift (<5mV)

    • Sensitivity drift (<1%)

  • Package RoHS compliant

    • SOIC-8 (DC) package, MSL-3

    • SIP4-VA (VA) package, MSL-1

  • AEC-Q100 – Grade 0 Automotive Qualified

Discover all features
400kHz Conventional Hall current sensor IC with dual overcurrent detection - MLX91219

Product description

The MLX91219 is a high-speed high-accuracy conventional hall current sensor simplifying module designs with a dual OverCurrent Detection (OCD) functionality, a flexible supply 3.3V/5V 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 MLX91219 is a monolithic conventional hall-effect sensor. The sensor provides an analog output voltage proportional to the applied magnetic flux density parallel to the IC surface.

The transfer characteristic of the MLX91219 is factory trimmed over temperature, and is programmable (offset, sensitivity, filtering, internal overcurrent threshold) during end-of-line customer calibration.

With its 400kHz bandwidth and fast response time, it is particularly adapted for high speed applications such as motor control, inverters and converters where fast response time, due to fast switching, is required. The MLX91219 is also best suited for applications such as redundant monitoring of battery-management systems (BMS).

Coming in either a SOIC8 or VA package:
The thin VA package allows for easy entry inside a narrow air gap of the ferromagnetic core, resulting in a design with high signal-to-noise ratio. The SOIC8 variant includes a second OCD. To be noted that the on-chip overcurrent detection feature allows for board space and cost savings, by reporting an OCD event with active low open-drain output, that can be set within or outside the output linear sensing range.

The MLX91219 is compatible with the PTC04 (DB-HALL05) for mass-production programming.

300kHz IMC-Hall® current sensor IC with dual overcurrent detection

  • MLX91219 versions: for current from 200 to beyond 2000 A

Application Examples

  • Redundant monitoring of battery-management system (BMS)
  • High Voltage Traction inverters (HV)
    • Phase current measurement
    • DC link current measurement
  • 48V Boost-recuperation machines (48V)
    • Phase current measurement
    • DC link current measurement
  • DCDC Converter
  • Smart Battery Junction Boxes
  • Smart Fuse Overcurrent Detection
MLX91219 - Block Diagram

Features and benefits

  • Dual overcurrent detection

    • Internal threshold

    • External threshold (SOIC8 package)

  • Flexible Supply Voltage

    • 5V mode and 3.3V mode (factory selectable)

  • Selectable analog output

    • Ratiometric or fixed (Vref)

  • High speed

    • DC to 400 kHz bandwidth

    • 2µs response time

  • Measurement range

    • 200 to beyond 2000 A

  • Low noise

  • End-of-line programmable sensor

  • High linearity down to ±0.3% full scale

  • Very low thermal drift for wide temperature range

    • Offset drift (<5mV)

    • Sensitivity drift (<1%)

  • Package RoHS compliant

    • SOIC-8 (DC) package, MSL-3

    • SIP4-VA (VA) package, MSL-1

  • AEC-Q100 – Grade 0 Automotive Qualified

Videos

Current sensor ICs MLX91218 & MLX91219

Product

The MLX91218 (IMC-HALL®) and the MLX91219 (Conventional Hall) are high-speed high-accuracy current sensor simplifying module designs (such as automotive inverter/converter) with an integrated dual overcurrent detection (OCD) functionality, a flexible supply 3.3V/5V and an improved SNR. Discover more.

Practical applications

Application diagram onboard charger

Onboard charger

The function of the onboard charger is to efficiently, reliably and safely convert AC electricity from the electrical grid (e.g. household plug) to DC electricity so it can be stored in the battery of the electrified vehicle (xEV).

 

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application Main DCDC thumbnail

main DCDC

The DC/DC converter produces low voltage DC electricity (e.g. 12 V, 14 V, 24 V) from the high voltage battery (e.g. 48 V up to 800 V) to supply the boardnet and charge the low voltage battery.

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Traction inverter and motor

Traction inverter & motor

In electric vehicles, the inverter converts DC power from the battery to AC power for the motor drive, which in turn transforms it into propulsion power. The efficiency of this system has a direct impact on the all-electric range, road performance and comfort.

 

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