Analog Devices / Maxim Integrated MAX17823H 12-Channel High-Voltage Sensor

Analog Devices MAX17823H 12-Channel High-Voltage Sensor is a data acquisition system for managing high-voltage battery modules. The system uses Analog Devices’s battery-management UART protocol for robust communications. The sensor is ideal for automotive battery-management systems requiring high safety-integrity levels. The Analog Devices MAX17823H High-Voltage Sensorfeatures a 12-bit successive-approximation-register (SAR) analog-to-digital converter (ADC) that can measure 12 cell voltages and two temperatures in 161µs. Up to 32 devices can be added to a daisy chain to manage 384 cells and monitor 64 temperatures. The system includes 12 internal switches for cell balancing and extensive built-in diagnostics.

Features

  • AEC-Q100 grade-2 temperature range
    • -40°C to +105°C operating temperature range
  • 9V to 65V operating voltage
  • Ultra-low power operation
    • 2mA standby mode
    • 2µA shutdown mode
  • 12x cell-voltage measurement channels
    • 2mV accuracy (3.6V, +25°C)
    • 5mV accuracy (0°C to +45°C)
    • 10mV accuracy (-40°C to +105°C)
  • 12x cell-balancing switches
    • Up to 650mA per switch
    • Emergency discharge mode
  • 2x temperature measurement channels
  • Die temperature measurement
  • Automatic thermal protection
  • 29x voltage threshold alerts
    • 12x overvoltage faults
    • 12x undervoltage faults
    • 2x overtemperature faults
    • 2x under-temperature faults
    • Cell mismatch alert
  • 4x general-purpose input/outputs (GPIOs)
  • Built-in diagnostics to support ASIL-D and FMEA requirements
  • Battery-management UART protocol
    • Daisy chain up to 32 devices
    • Communication port isolation
    • Up to 2Mbps baud rate (auto-detect)
    • 1.5µs propagation delay per device
    • Packet error checking (PEC)
  • Factory-trimmed oscillators
    • No external crystals required
  • 10mm x 10mm package (64-pin LQFP)

Applications

  • Battery backup systems (UPS)
  • Battery-powered tools
  • Electric bikes
  • Electric vehicles (EVs)
  • High-voltage battery stacks
  • Hybrid electric vehicles (HEVs)
  • Super-cap systems
Đã phát hành: 2019-08-16 | Đã cập nhật: 2023-04-21