250 kHz High accuracy Conventional Hall current sensor IC with improved diagnostics
MLX91217 MelexisThe 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.
Top features
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Measurement range ±15 to ±450 mT
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High accuracy
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Fast response time < 3 μs
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AEC-Q100 Grade 0 qualified
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Broken wire diagnostics & clamping
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Programmable gain, offset, filtering, clamping, …
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Fast analog ratiometric output
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Wideband: DC to 250kHz
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Trim&Form options available
- 48bit unique ID for traceability
Product description
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
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
Documents and tools
Application note(s)
- Reference design guide for current sensors
- Typical cores and shields geometries
- Current sensors programming and calibration
Datasheet(s)
Product flyer(s)
Selection guide(s)
Videos
Hall-effect current sensors offering enhanced performance and diagnostics
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.
Melexis
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