New Products |
By Asma Adhimi
TDK Corporation has expanded its Micronas Hall-effect sensor portfolio with the HAL 3025, a new stray-field robust position sensor aimed at high-speed motor control applications in electric vehicles and safety-critical automotive systems.
The device combines analog sine/cosine outputs with ASIL D-ready functional safety support, targeting applications such as steer-by-wire, brake-by-wire and high-voltage traction motors. Samples are already available, with volume production scheduled for Q2 2026.
For eeNews Europe readers working on EV architectures and industrial motor systems, the launch highlights the growing demand for compact, highly integrated sensors that can operate reliably in electrically noisy environments. It also reflects how sensor suppliers are simplifying compliance with increasingly strict automotive functional safety requirements.
The HAL 3025 measures full 360° rotational position using TDK-Micronas’ SixSense technology, which evaluates the vertical magnetic field component while suppressing external DC and AC stray fields in line with ISO 11452-8 requirements.
The sensor is designed to operate at rotational speeds of up to 60,000 rpm, making it suitable for modern electric powertrains and fast-response actuators. According to TDK, the analog signal path provides low latency and high bandwidth, enabling external ECUs or microcontrollers to calculate angular position with high precision using differential or single-ended sine/cosine outputs.
One of the key design goals is reducing system complexity in safety-critical architectures. The company says the single-die device is developed as an SEooC ASIL D-ready component under ISO 26262:2018, integrating on-chip diagnostics such as wire-break and overvoltage detection while avoiding the board space and BOM overhead associated with multi-die solutions.
TDK is also positioning the sensor as a way to simplify motor layout design in compact EV systems where sensing elements sit close to power electronics.
By compensating for magnetic interference from nearby motors and power lines, the HAL 3025 can eliminate the need for magnetic shielding or oversized magnets, according to the company. The sensor works with a simple two-pole ferrite magnet in an end-of-shaft configuration.
The device includes programmable non-volatile memory for calibration parameters including gain, offset, orthogonality and 0-angle adjustment. These settings can be configured through the output pin, removing the need for dedicated programming pins during end-of-line calibration.
Packaged in an SOIC8 footprint compatible with the existing HAL 3020 and HAL 3021 devices, the sensor operates across a junction temperature range of -40°C to 170°C, targeting harsh automotive environments and next-generation x-by-wire vehicle architectures.
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