New Microcontroller for Automotive Battery Management Systems

Infineon has unveiled a cutting-edge solution for monitoring and managing automotive 12 V lead-acid batteries with the introduction of the PSoC 4 HVPA-144K microcontroller. This innovative embedded system plays a crucial role in ensuring the reliable operation of vehicles' electrical systems by providing intelligent battery sensing and management capabilities.

The PSoC 4 HVPA-144K is designed to meet the stringent safety standards of the automotive industry, being fully compliant with ISO26262. Equipped with dual high-resolution sigma-delta ADCs and digital filtering channels, this microcontroller enables precise measurement of key battery parameters such as state-of-charge (SoC) and state-of-health (SoH) with an impressive accuracy of up to ±0.1 percent.

One of the standout features of the PSoC 4 HVPA-144K is its integrated 12 V LDO (42 V tolerant), which allows direct power supply from the lead-acid battery without the need for an external source. Additionally, the microcontroller boasts an integrated transceiver for seamless communication with the LIN bus, further enhancing its functionality and versatility in automotive applications.

Powered by an Arm Cortex-M0+ MCU operating at up to 48 MHz, the PSoC 4 HVPA-144K offers ample code and data flash memory, along with SRAM, to support complex battery management algorithms. With digital peripherals like timers, counters, PWMs, and a configurable serial communication block, this microcontroller provides a comprehensive solution for battery monitoring and control.

Infineon has ensured that the PSoC 4 HVPA-144K is backed by high-quality automotive software, including the Automotive Peripheral Driver Library (AutoPDL) and Safety Library (SafeTlib). These software components adhere to industry standards such as A-SPICE, MISRA 2012 AMD1, CERT C, and ISO26262 compliance, guaranteeing robust performance and reliability in automotive applications.