Magnetic Sensor Targets Embedded Position Apps Demanding High Functional Safety
Providing key functionality to precision applications like steer-by-wire systems, the MLX90427 from Melexis is a next-generation magnetic position-sensing IC specifically engineered to meet the current and future technical requirements of the automotive industry. Leveraging the Triaxis Hall magnetic sensing element that exhibits sensitivity to three components of flux density (Bx, By, and Bz) applied to the IC, the MLX90427 enables accurate detection of movement of any magnet in its vicinity.
The MLX90427 can seamlessly transition between four distinct operating modes, including a standard rotary mode with two performance ranges, a joystick mode for XYZ 3D position-sensing applications, and a 360-degree stray field immune mode for continuous rotational feedback in noisy environments. Features include AEC-Q100 qualification (Grade 0), and ISO26262 ASIL C SEooC (safety element out of context) supporting up to ASIL D system-level integration. Boasting excellent stray field immunity and EMC robustness, the MLX90427 can be deployed alongside sensors utilizing differing sensing technologies, such as an inductive sensor, to provide the highest levels of functional safety through heterogeneous redundancy.
Additional features include a high-speed full-duplex SPI output for communication with a master microcontroller and a 14-bit resolution output, as well as 5V and 3V3 application compatibility and an operating temperature range from -40 to 160°C, with built-in self-diagnostics for swift fault reporting. The MLX90427 is available in SOIC8 packaging from May with a dual die TSSOP16 (fully redundant) variant launching in Q4 of 2024.
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Melexis
MLX90427