Battery management unit

Products and reference designs

Battery management unit

Block diagram

Overview

Our integrated circuits and reference designs help you create battery management unit designs that enable highly accurate monitoring of and control over the high-voltage battery stack.

Design requirements

  • Resolution of voltage and temperature measurement on cell level.
  • Accurate current sense, voltage sense and insulation monitoring on pack level.
  • Following state-of-the-art architecture regarding system redundancy in order to allow implementation of the system on the highest safety level.

Block diagram

Find products and reference designs for your system.

Battery management unit

Battery system controller Battery system controller Safety microcontroller Safety microcontroller Wired interface Wired interface Daisy chain communication bridge Daisy chain communication bridge Daisy chain communication to BDU Daisy chain communication to BDU Daisy chain communication to CSC Daisy chain communication to CSC High voltage High voltage Low voltage Low voltage Voltage sense Voltage sense Current sense Current sense Insulation resistance monitoring Insulation resistance monitoring SPI SPI GPIO GPIO Optional SPI Optional SPI GPIO GPIO SPI SPI Wireless interface Wireless interface Wireless BMS MCU Wireless BMS MCU SPI SPI SPI SPI SPI/UART SPI/UART Reverse battery protection Reverse battery protection Input protection Inputprotection SPI/UART SPI/UART Optional daisy chain communication from bridge Optional daisy chain communication from bridge CAN /LIN CAN /LIN Safety breaker Safety breaker Pyro-fuse driver Pyro-fuse driver SPI SPI Smart fuse Smart fuse SPI SPI SPI SPI +12V +12V Watchdog Watchdog Real-time clock & monitor Real-time clock & monitor SPI SPI High voltage monitoring High voltage monitoring ADC/Pack monitor ADC/Pack monitor ESD ESD Switch control Switch control MOSFET MOSFET Isolated load switch/photomos Isolated load switch/photomos Pre-charge control Pre-charge control Pre-charge solid state switch driver Pre-charge solid state switch driver Contactor control Contactor control Contactor driver Contactor driver System basis chipsets (SBC) System basis chipsets (SBC) PMIC PMIC DC-DC converter/LDO DC-DC converter/LDO Watchdog Watchdog Communication interface Communication interface CAN/LIN transceier CAN/LIN transceier Ethernet transciever Ethernet transciever ESD ESD Environment sensing Environment sensing Humidity sensor Humidity sensor Temp sensor Tempsensor High-voltage safety interlock High-voltage safety interlock Interlock Interlock Isolation Isolation 0 0 Isolated power supply Isolated power supply Digital isolator Digital isolator Isolated amplifier Isolated amplifier

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