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.
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.
Related: SAR A/D converters for high-temperature applications introduced by Microchip Technology
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 www.infineon.com.
