Wednesday, April 24, 2024

Precision Sensor Transforms EVs And Energy Storage

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The third-generation current sensor integrates IVT, a microcontroller, and safety features for EVs and OEMs.

MLX91230

Melexis has introduced the MLX91230, a product in its third generation of current sensors. This digital offering delivers precision. With integrated IVT measurement, an embedded microcontroller (MCU), and safety measures, the MLX91230 is for EV batteries and power distribution systems.

The sensor caters to various applications, from aiding OEMs and Tier 1 in reducing costs with accurate monitoring while adhering to strict safety standards to enhancing battery management systems (BMS), battery disconnect units (BDUs), and battery junction boxes (BJB). It’s also beneficial for manufacturers looking to amplify their system’s capabilities with smart functions via its programmable flash microcontroller. It proves helpful in setups like smart Pyro-Fuses and home energy storage systems, including solar power battery banks.

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The MLX91230 uses digital infrastructure and signal processing to deliver +/-1% accuracy over temperature and lifespan. While other sensors make similar precision claims, the MLX91230 encompasses thermal drift, lifetime drift, and linearity errors. Its Microcontroller Unit (MCU) with flash memory facilitates custom software deployment and system adjustments. The MLX91230 complies with the Automotive Electronics Council Qualification Q100 (AEC-Q100) and Automotive Safety Integrity Level (ASIL) standards, supporting system integration up to ASIL D in line with International Organization for Standardization (ISO) 26262 safety requirements. Its digital structure and MCU aid its incorporation into battery-related and Direct Current (DC) voltage/current applications.

The growth of electric vehicles and advanced driver-assistance systems (ADAS) has implications for vehicle electronic design. The MLX91230 offers Hall-effect-based DC sensing and integrated voltage and temperature (IVT) capability. Its supply voltage complies with LV124 and features on-chip overcurrent detection. To assist designers, it also provides Functional Safety (SEooC) compliance. The digital MCU comes with flash memory and an additional voltage channel. The device can measure on-chip junction temperature and supports selectable LIN or UART output. All these features are housed in an 8-pin SOIC design.

For more information, click here.

Nidhi Agarwal
Nidhi Agarwal
Nidhi Agarwal is a journalist at EFY. She is an Electronics and Communication Engineer with over five years of academic experience. Her expertise lies in working with development boards and IoT cloud. She enjoys writing as it enables her to share her knowledge and insights related to electronics, with like-minded techies.

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