Electronic Products & Technology

Microcontroller suits automotive battery management systems

EP&T Magazine   

Automation / Robotics Electronics Power Supply / Management Semiconductors automotive Microcontroller semiconductor

INFINEON TECHNOLOGIES PSoC 4 High Voltage Precision Analog (HVPA)-144K microcontroller addresses the automotive battery management sector by integrating high-precision analog and high-voltage subsystems on a single chip. Device provides a fully integrated embedded system for monitoring and managing automotive 12 V lead-acid batteries, which is critical for the 12V power supply of vehicles’ electrical systems. Microcontroller is ISO26262 compliant, enabling compact and safe intelligent battery sensing and battery management in modern vehicles. Product’s dual high-resolution sigma-delta ADCs, together with four digital filtering channels, enables accurate measurement of the battery’s state-of-charge (SoC) and state-of-health (SoH) by measuring key parameters such as voltage, current, and temperature with an accuracy of up to ±0.1 percent. Device features two programmable gain amplifiers (PGAs) with automatic gain control, allowing fully autonomous control of the analog front end without software intervention. The use of shunt-based current sensing for batteries provides a higher accuracy than conventional Hall sensors.

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