The MLX91231, developed by Melexis, is a shunt-based measurement solution that expands the range of power sensors available for the automotive industry. With the increasing intelligence in vehicles and the growing number of low-voltage functions in driver assistance systems, there is a higher demand for powerful, secure, and reliable current and voltage sensors. The MLX91231 offers high accuracy and reliability, allowing for precise monitoring and optimization of low-voltage systems such as DC/DC converters, battery terminal sensors, and energy distribution in zonal infrastructures.
Table of Contents: What awaits you in this article
MLX91231: High Accuracy Sensor for Low Voltage System Monitoring
The MLX91231 offers high accuracy with a temperature and lifetime sensitivity drift error of less than ±0.25%. It also has an extremely low offset drift error of 1.5 μV for the input under the same conditions. This allows the sensor to provide precise monitoring and optimization of low-voltage systems such as DC/DC converters, battery terminal sensors (BTS), and energy distribution/monitoring in zonal infrastructures. Additionally, the MLX91231 is characterized by high output stability and EMC resistance, making it ideal for use in harsh automotive environments.
MLX91231: Advanced Sensor with Integrated MCU for Beyond Current Measurement
The MLX91231 offers advanced features beyond just current measurement, thanks to its integrated microcontroller unit (MCU). It can be powered by either regulated 5V or directly from a 12V battery, providing current, voltage, and junction temperature readings through a selectable LIN or UART output. The standout feature is the MCU’s integrated diagnostic-capable overcurrent detection (OCD), which allows for safe and simple triggering of pyro fuses without the need for a complicated safety mechanism. With ASIL-B/D compliance according to ISO 26262, the MLX91231 supports system-level integration up to ASIL D.
MLX91231: Compatible Software Design for Cost-Effective System Integration
The MLX91231 features a customer-specific software design that is compatible with Melexis’ existing and future solutions. This platform approach instills confidence and allows for software reusability, resulting in reduced development costs. Additionally, the sensor’s compact 8-Pin SOIC package facilitates easy system integration.
High-precision MLX91231 sensor optimizes low-voltage automotive systems
The MLX91231 from Melexis is a highly accurate and reliable sensor that offers numerous benefits to the automotive industry. Its high precision allows for precise monitoring and optimization of low voltage systems, while the integrated MCU and diagnostic overcurrent detection expand the sensor’s functionality and facilitate compliance with safety regulations.
The MLX91231 is a powerful and intelligent solution for current measurement in the automotive industry. Its custom software design and compact housing make it easy to integrate into existing systems, saving both time and cost. With its high accuracy and reliability, it enables precise monitoring and optimization of low voltage systems. For more information, visit www.melexis.com/MLX91231 or contact us directly at www.melexis.com/contact.
