With the introduction of the PSoC 4 Excessive Voltage Precision Analog (HVPA)-144K microcontroller, Infineon Applied sciences AG addresses the automotive battery administration sector by integrating high-precision analog and high-voltage subsystems on a single chip. It offers a totally built-in embedded system for monitoring and managing automotive 12 V lead-acid batteries, which is important for the 12 V energy provide of automobiles’ electrical methods. The brand new microcontroller is ISO26262 compliant, enabling compact and protected clever battery sensing and battery administration in fashionable automobiles.
The PSoC 4 HVPA-144K’s twin high-resolution sigma-delta ADCs, along with 4 digital filtering channels, allow correct measurement of the battery’s state-of-charge (SoC) and state-of-health (SoH) by measuring key parameters resembling voltage, present, and temperature with an accuracy of as much as ±0.1 %. The gadget options two programmable achieve amplifiers (PGAs) with automated achieve management, permitting absolutely autonomous management of the analog entrance finish with out software program intervention. The usage of shunt-based present sensing for batteries offers a better accuracy than standard Corridor sensors.
An built-in 12 V LDO (42 V tolerant) permits the gadget to be provided immediately from the 12 V lead-acid battery with out the necessity for an exterior energy provide. An built-in transceiver permits direct communication with the LIN bus. The product meets the purposeful security necessities of ASIL-C in response to ISO26262.
The Arm® Cortex®-M0+ MCU on which the PSoC 4 HVPA-144K relies operates at as much as 48 MHz with as much as 128 KB of code flash, 8 KB of information flash and eight KB of SRAM, all with ECC. The PSoC 4 HVPA-144K additionally contains digital peripherals resembling 4 timers/counters/PWMs and a serial communication block that may be configured as an I2C/SPI/UART.
The PSoC 4 HVPA-144K is supported by automotive-quality software program. Infineon’s Automotive Peripheral Driver Library (AutoPDL) and Security Library (SafeTlib) are developed in response to the usual automotive software program improvement course of. They’re each A-SPICE compliant, following the MISRA 2012 AMD1 and CERT C, and ISO26262 compliant.
With the introduction of the PSoC 4 HVPA-144K, Infineon is laying the muse to develop its PSoC microcontroller portfolio to incorporate Li-ion battery administration methods for EVs. The portfolio will quickly embody a number of merchandise for monitoring and managing excessive voltage (400 V and above) and low voltage (12 V/48 V) batteries, additional facilitating future EV adoption.
Availability
The PSoC 4 HVPA-144K is now obtainable in a compact 32-QFN (6×6 mm²) package deal with as much as 9 GPIOs. For a simple begin of improvement, an analysis board can also be obtainable. Additional data may be discovered at www.infineon.com/psochvpa144k.