Infineon has introduced a extremely built-in, excessive voltage-tolerant MCU to simplify and enhance automotive battery administration capabilities. Battery well being and administration are crucial to the longevity and total operation of electrical and software-defined autos.
Infineon’s latest automotive MCU simplifies battery administration with lead-acid batteries, together with improved voltage tolerance and a high-precision analog entrance finish.
In comparison with earlier generations, the brand new Infineon MCUs enhance a number of options and provide the next voltage tolerance in a single bundle, simplifying improvement and lowering the variety of elements and required board house.
New MCU Packs Excessive-Voltage Subsystems
A automobile’s battery administration methods are crucial to right operation, with many autos shifting from domain-based to zonal-based automotive architectures. Conversely, cumbersome, high-performance BMSes are counterproductive to squeezing extra sensors and processors into trendy autos.
To steadiness this tradeoff, Infineon’s newest MCU household, the PSoC 4 Excessive Voltage Precision Analog (HVPA)-144K (datasheet linked), densely integrates high-voltage options whereas exactly monitoring battery well being.
The analog entrance finish consists of {hardware} to attach on to 12-V alerts.
Throughout the chip is an embedded high-voltage LDO to transform the 12 V energy from a lead-acid battery and take away the necessity for an exterior energy converter. As well as, the system consists of twin ΣΔ ADCs with as much as 20 bits of precision and automated programmable achieve amplifiers with as much as 4 digital-filtering channels. This enables designers to measure key battery metrics corresponding to state of cost and state of well being with as much as 0.1% accuracy.
Backed by Processing {Hardware} and Software program
By way of processing, the PSoC4 HVPA-144K consists of an Arm Cortex-M0+ CPU with a clock velocity of as much as 48 MHz and a DMA controller. That is supported by as much as 144 KB of code flash, 8 KB of information Flash, and eight KB of SRAM. 4 timers are additionally included, alongside a serial communication block that may be configured as an I2C, UART, or SPI. An built-in LIN transceiver can be included, bettering communication between automobile subsystems. The MCU is on the market in a QFN-32 bundle.
The instance software schematic highlights the convenience of deployment of the MCU, eradicating the necessity for exterior voltage regulators and bringing extra performance on-chip.
Infineon affords software program to complement the PSoC 4 HVPA-144K, permitting designers to stand up and working shortly whereas nonetheless contemplating purposeful security. Utilizing the PSoC Creator software program, together with accompanying Peripheral Driver Libraries (PDLs) and Infineon’s Practical Security Library (SafeTLib), designers can shortly deploy options utilizing the brand new MCU household.
The PSoC4 HVPA-144K is on the market now, together with an analysis board.
Wanting Forward to Extra Automotive Programs
Even if the HVPA-144K was solely not too long ago introduced, Infineon is already trying ahead to its subsequent innovation within the automotive BMS house. Li-ion controllers tolerant of over 400 V are on Infineon’s radar, together with a extra various providing of low-voltage (12V/48V) options.
All photos used courtesy of Infineon.