Infineon PSoC 4 HVPA-144K Microcontroller is Designed for Automotive Battery Management Systems

Infineon Technologies has recently introduced PSoC 4 HVPA-144K Microcontroller for automotive battery management systems. This microcontroller integrates high-precision analog and high-voltage subsystems on a single chip. So it provides a fully integrated embedded system for monitoring and managing automotive 12 V lead-acid batteries, which is critical for the 12 V power supply of vehicles’ electrical systems.

The PSoC 4 HVPA-144K, based on Arm Cortex-M0+ MCU operating at up to 48 MHz with 128 KB code flash, 8 KB data flash, and 8 KB SRAM, all with ECC. It also includes digital peripherals like timers/counters/PWMs and a configurable I2C/SPI/UART.

The MCU utilizes dual high-resolution sigma-delta ADC to precisely measure battery SoC and SoH. It features programmable gain amplifiers with automatic gain control for independent analog front-end management. The microcontroller employs shunt-based current sensing for enhanced accuracy compared to traditional methods.

PSoC 4 HVPA-144K is supported by automotive-grade software, AutoPDL, and SafeTlib, developed under standard automotive processes and compliant with A-SPICE, MISRA 2012, CERT C, and ISO26262. This lays the foundation for Infineon’s PSoC portfolio expansion into Li-ion battery management for EVs, including high and low-voltage battery management products.

Key features of the PSoC 4 HVPA-144K include:

• Microcontroller: PSoC 4 High Voltage Precision Analog (HVPA)-144K with Arm Cortex-M0+ operating at up to 48 MHz
• Memory:
  • Up to 128 KB of code flash
  • 8 KB of data flash
  • 8 KB of SRAM with ECC
• Analog Features:
  • Dual high-resolution sigma-delta ADCs
  • Four digital filtering channels
  • ±0.1 percent accuracy in measuring voltage, current, and temperature
  • Two programmable gain amplifiers (PGAs) with automatic gain control
  • Shunt-based current sensing for higher accuracy
• Power Management:
  • Integrated 12 V LDO (42 V tolerant) for direct battery supply
• Communication:
  • Integrated transceiver for LIN bus communication
• Safety Standards:
  • Functional safety requirements of ASIL-C according to ISO26262
• Digital Peripherals:
  • Four timers/counters/PWMs
  • Serial communication block configurable as I2C/SPI/UART
• Software Support:
  • Infineon’s Automotive Peripheral Driver Library (AutoPDL) and Safety Library (SafeTlib)
  • Developed according to standard automotive software development process
  • A-SPICE compliant, following MISRA 2012 AMD1 and CERT C, and ISO26262 compliant
• Future Expansion: Foundation for expanding PSoC microcontroller portfolio to include Li-ion battery management systems for EVs
• Compliance: ISO26262 compliant, ensuring safety and reliability
• Target Sector: Automotive Battery Management
• Integration: High-precision analog and high-voltage subsystems on a single chip
• Functionality: A fully integrated embedded system for monitoring and managing automotive 12 V lead-acid batteries

The PSoC 4 HVPA-144K in a compact 32-QFN (6×6 mm²) package with up to 9 GPIOs with an evaluation board is available on Infineon’s website. more information can be found on their press release page.

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