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Analog Devices / Maxim Integrated MAX17854 High-Voltage Data-Acquisition System

Analog Devices MAX17854 High-Voltage Data-Acquisition System is used for the management of high-voltage and low-voltage battery modules. The system can measure 14 cell voltages and a combination of six temperatures or system voltage measurements. The device has fully redundant measurement engines in 162µs, or performs all inputs solely with the ADC measurement engine in 99μs.

Features

  • 65V operating voltage
  • Ultra-low-power operation
    • Shutdown mode 2µA
  • Redundant ADC and comparator (COMP) acquisitions
  • Simultaneous cell and Bus-bar voltage acquisitions
  • 14 cell-voltage measurement channels
    • 2.2mV accuracy (-40°C to +125°C)
    • 1.8mV accuracy (+5°C to +65°C)
  • 14 cell-balancing switches
    • >300mA software-programmable balancing current
    • Optimized driving and parking balancing modes
    • Automated balancing with individual cell timers
    • Automated balancing by cell voltage
  • Emergency discharge mode
  • Six configurable auxiliary inputs for temperature, voltage, or GPIO
  • Integrated Die temperature measurement
  • Automatic thermal protection
  • Individually configurable safety alerts
    • Overvoltage, undertemperature faults
    • Undervoltage, overtemperature faults
    • 1-cell mismatch alert
  • Support ASIL D requirements for cell voltage, temperature, communication
  • UART, dual UART interface
  • Battery-management UART protocol
    • Daisy-chain up to 32 devices
    • Capacitive communication-port isolation
    • Up to 2Mbps Baud rate (Auto-Detect)
    • 1.5μs propagation delay per device
  • Packet-Error Checking (PEC)
  • I2C master
  • Configurable hardware-alert interfaces
  • 32-bit unique device ID
  • AEC-Q100 grade 1
    • Temperature range -40°C to +125°C

Application Use Cases

  • High-voltage battery stacks
  • Electric vehicles (EVs)
  • Hybrid electric vehicles (HEVs)
  • Electric bikes
  • Uninterruptible power supplies (UPS)
  • Super-cap systems
  • Battery-powered tools

Evaluation Kit

MAX17854 Evaluation Kit

Analog Devices / Maxim Integrated MAX17854 Evaluation Kit

Used to demonstrate the MAX17854 14-channel high-voltage smart sensor data acquisition interface IC.

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Published: 2022-01-05 | Updated: 2024-11-06