Melexis Released High-Voltage Current Sensors
The new MLX91224 and MLX91225 sensors enable isolated current monitoring for automotive and industrial systems.
Updated on Sept. 22, 2026 in Robotics
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Melexis has released the MLX91224 and MLX91225 current sensors designed for high-voltage power electronics. These components are available now for use in demanding automotive and industrial environments.
Why it matters
These sensors provide integrated isolation and functional safety readiness to support the high-power demands of modern electric drivetrain and industrial systems. The release addresses the need for components that can reliably handle high current and high-voltage isolation in harsh conditions.
The sensors offer measurement up to 100 ARMS with isolation supporting voltages up to 1640 VRMS. The DH package supports surge-current ratings reaching ±29 kA while maintaining functionality across a range of -40 °C to 150 °C.
The players
Melexis
A global semiconductor company specializing in sensing solutions and drivers for automotive and industrial power electronics.
The details
The devices function by passing current through an internal lead frame, which generates a magnetic flux captured by integrated Hall plates—semiconductor sensors that change their voltage in response to magnetic fields. By combining the current conductor, sensing element, signal conditioning, and isolation circuitry into a single package, the design simplifies assembly in high-voltage circuits. The MLX91224 supports 5 V system architectures, while the MLX91225 is optimized for 3.3 V systems, both meeting ASIL B—an international functional safety standard for automotive electronics—readiness requirements.
Timeline
Melexis announced the sensor portfolio expansion on September 22, 2026.
The Tech Race
This development aligns with the broader push to certify power monitoring hardware against strict ASIL B functional safety standards. It marks a competitive shift toward integrating complex isolation and sensing capabilities into single-chip packages for high-voltage automotive applications.
Engineers can immediately integrate these sensors into new automotive and industrial system designs requiring high-voltage isolation. The choice between the 5 V MLX91224 and 3.3 V MLX91225 models allows for compatibility with different controller logic voltage levels.
The takeaway
These sensors represent a move toward higher integration for high-voltage monitoring in compact power systems. Watch for new hardware reference designs from automotive OEMs that incorporate these sensors in their next-generation electric vehicle charging and power delivery architectures.
Further reading
For more on the current state of industrial and automotive sensing, visit Robotics.
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