Rutronik Adds TDK HAL 3025 Sensor to Portfolio

Rutronik has expanded its automotive sensor portfolio with the immediate availability of the TDK HAL 3025, a new 360-degree position sensor engineered for high-speed, safety-critical motor control. Designed as an SEooC (Safety Element out of Context) ASIL D-ready device in accordance with ISO 26262:2018, the single-die sensor meets the rigorous demands of next-generation x-by-wire automotive systems and can be sourced directly via the rutronik24.com e-commerce platform.

Utilizing TDK's proprietary SixSense technology, the HAL 3025 detects the vertical components of a magnetic field to determine an absolute 360-degree rotation angle. The device features integrated interference field compensation compliant with ISO 11452-8, which significantly reduces the influence of external magnetic stray fields. This allows the sensor to be placed in close proximity to high-current power electronics without requiring costly magnetic shielding or oversized target magnets—a simple two-pole ferrite magnet in an end-of-shaft configuration is sufficient. For safety-critical applications, the single-chip architecture includes integrated on-chip diagnostics that detect errors directly within the IC, minimizing the need for external monitoring by the motor controller.

Capable of measuring rotational speeds up to 60,000 rpm, the sensor's fast analog signal path provides short response times and a high output bandwidth. Microcontrollers or ECUs can calculate absolute angular position with high resolution via EMC-robust differential or single-ended sine/cosine outputs. To streamline manufacturing calibration, essential signal parameters such as gain, offset, zero angle, and orthogonality can be programmed directly via the output pin, eliminating the need for additional programming pins. Packaged in a compact SOIC8 SMD format, the device is pin-compatible with earlier HAL 3020 and HAL 3021 models, facilitating seamless system upgrades for Rutronik customers.

Additional Context
This section provides technological and market background not explicitly detailed in the original release.

As the automotive industry shifts toward fully electrified, software-defined vehicles, traditional mechanical linkages in steering and braking are being replaced by electronic steer-by-wire and brake-by-wire systems. These safety-critical applications rely heavily on ultra-fast, highly accurate electric motors (such as Brushless DC and Permanent Magnet Synchronous Motors) that require precise, low-latency rotor position data for efficient electronic commutation.

However, the modern EV powertrain creates a harsh electromagnetic environment. High-current busbars and rapidly switching inverters generate severe AC and DC magnetic stray fields that can easily distort traditional unshielded Hall-effect sensors, leading to erratic motor control or catastrophic safety failures. By integrating SixSense technology and ISO 11452-8 stray-field immunity directly into the silicon, the HAL 3025 actively rejects these interfering fields. For Tier 1 suppliers sourcing through distribution networks like Rutronik, achieving ASIL D readiness—the highest automotive safety integrity level—on a single-die architecture enables simplified ECU designs, reduced board space, and lower bill-of-material costs without compromising fault detection capabilities.

Edited by Lekshman Ramdas, Induportals editor – adapted by AI.

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