Analog microcontroller for battery management in a variety of vehicles introduced by Infineon Technologies

June 26, 2024
Microcontroller die provide an integrated embedded system for monitoring and managing automotive 12-volt lead-acid batteries.

MUNICH – Infineon Technologies AG in Munich is introducing the PSoC 4 high-voltage precision analog 144K microcontroller die for automotive battery management applications.

These microcontroller die integrate high-precision analog and high-voltage subsystems on one chip, and provide an integrated embedded system for monitoring and managing automotive 12-volt lead-acid batteries, which is critical for the 12-volt vehicle power supply.

The microcontroller is ISO26262-compliant for compact and safe intelligent battery sensing and battery management in modern vehicles.

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The PSoC 4 HVPA-144K’s dual high-resolution sigma-delta A/D converters and four digital filtering channels measure the battery’s state-of-charge and state-of-health by monitoring voltage, current, and temperature with an accuracy of to plus-or-minus 0.1 percent.

The device features two programmable gain amplifiers with automatic gain control to control the analog front end autonomously without software intervention. The use of shunt-based current sensing for batteries provides a higher accuracy than conventional Hall sensors.

An integrated 12-volt low-dropout regulator supplies the device from the 12-volt lead-acid battery without an external power supply. An integrated transceiver communicates with the local interconnect network bus. The product meets the functional safety requirements of ASIL-C according to ISO26262.

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The Arm Cortex-M0+ microcontroller on which the PSoC 4 HVPA-144K is based operates as fast as 48 MHz with as much as 128 kilobits of code flash, 8 kilobits of data flash and 8 kilobits of SRAM, all with error correction code.

The PSoC 4 HVPA-144K also includes digital peripherals such as four timers, counters, and pulse width modulators and a serial communication block.

For more information contact Infineon Technologies online at

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