Flexible Battery Management System (BMS) Reference Design

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RD33771CNTREVM is a reference design for mixed centralized-distributed architecture battery management systems (BMS) for electric vehicle applications.

Includes 4x BCC on the board controlled by 1x S32K1xx MCU, communication by transformer isolation or capacitor isolation. Several of these boards can be linked by TPL twisted wire daisy chain and controlled by other battery management units to fit more automotive battery management cases.

Block Diagram

RD33771CNTREVM Block Diagram

RD33771CNTREVM Block Diagram
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Supported Devices

Processors and Microcontrollers

S32K Auto General-Purpose MCUs

  • S32K1: S32K1 Microcontrollers for Automotive General Purpose

Power Management

System Basis Chips

  • UJA1169TK: Mini High-Speed CAN System Basis Chip

Battery Cell Controllers

  • MC33771C: 14-Channel Li-Ion Battery Cell Controller IC

Battery Communication ICs

  • MC33664: Isolated Network High-Speed Transceiver

Features

Microcontroller (ASIL B)

  • S32K144 as microcontroller to manage all AFEs on the board

Analog Front End (ASIL D)

  • 4 BCC devices on board
  • Transformer/capacitor isolation between each BCC
  • 14 battery cell voltage measurements at each AFE
  • 7 temperature channel measurements at each AFE
  • Daisy chain link other board(s) for flexible architecture

Power Management

  • Power supply with watchdog support
  • Overvoltage/undervoltage detection support

Connectivity

  • CAN interface, capacitor /transformer isolation based TPL daisy chain for off-board

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  • RD33771CNTREVM

  • Flexible Battery Management System (BMS) Reference Design.

  • For mixed centralized-distributed architecture battery management systems.

    Kit Contains:

    • Battery simulation cable for each AFE module
    • Low voltage cable for MCU module
    • Twisted daisy chain cable for connecting other possible board
    • External 12 VDC supplier for MCU part
    • External 12~50 VDC supplier for all AFEs
  • $1028.38 USD
  • For a quantity of 1
    • Availability: In Stock
    • Inventory: 3
    • Shipping: Normally ships 1-2 business days
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