On June 11, Infineon Technologies AG launched the PSoCTM 4 High Voltage Precision Analog (HVPA)-144K microcontroller, which meets the needs of the automotive battery management industry by integrating high-precision analog and high-voltage subsystems on a single chip. It provides a fully integrated embedded system for monitoring and managing automotive 12 V lead-acid batteries, which is very important for the 12 V power supply of the automotive electrical system. The PSoC™ 4 HVPA-144K microcontroller complies with the ISO26262 standard and can bring compact and safe smart battery sensing and battery management functions to modern cars.

The dual high-resolution analog-to-digital converters (Σ-Δ type analog-to-digital converters) of the PSoCTM 4 HVPA-144K, together with four digital filtering channels, measure key parameters such as voltage, current, and temperature to achieve accurate measurement of battery state of charge (SoC) and state of health (SoH) with an accuracy of up to ±0.1%. The semiconductor device has two programmable gain amplifiers (PGA) with automatic gain control, which enables full autonomous control of the analog front end without software intervention. Compared with traditional Hall sensors, the battery accuracy is higher with shunt current sensors.

The integrated 12 V LDO (withstands 42 V) does not require an external power supply and can directly power the device from a 12 V lead-acid battery. The integrated transceiver can communicate directly with the LIN bus. The product meets ISO26262 ASIL-C functional safety requirements.

The Arm® Cortex®-M0+ MCU on which the PSoCTM 4 HVPA-144K is based operates at up to 48 MHz and has up to 128 KB of code flash, 8 KB of data flash, and 8 KB of SRAM, all with ECC. The PSoCTM HVPA-144K also includes a variety of digital peripherals, such as four timers/counters/PWMs and a serial communication block that can be configured as I2C/SPI/UART.

The PSoCTM 4 HVPA-144K is supported by automotive-grade software. Infineon's Automotive Peripheral Driver Library (AutoPDL) and Safety Library (SafeTlib) are developed in accordance with standard automotive software development processes and are compliant with A-SPICE, MISRA 2012 AMD1 and CERT C, as well as ISO26262.

With the launch of PSoCTM 4 HVPA-144K, Infineon has laid the foundation for expanding its PSoCTM microcontroller portfolio to include lithium-ion battery management systems for electric vehicles. The portfolio will soon be joined by products for monitoring and managing high-voltage (400 V and above) and low-voltage (12 V/48 V) batteries, further promoting the use of future electric vehicles.

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