MAX17823H

12-Channel, High-Voltage Data-Acquisition Systems

Meets Toughest Automotive and Industrial OEM Requirements for Safety, Performance, Reliability with Balancing Currents


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说明

The MAX17823H is a data acquisition system for the management of high-voltage battery modules. The system features a 12-bit SAR ADC that can measure 12 cell voltages and two temperatures in 161 µs. There are 12 internal switches for cell-balancing and extensive built-in diagnostics. Up to 32 devices can be daisy-chained together to manage 384 cells and monitor 64 temperatures.

Cell voltages (0V to 5V) are measured differentially over a 65V common-mode range. Cell measurements have a typical accuracy of 2mV (3.6V cell, 25°C). If oversampling is enabled, up to 128 measurements per channel can be averaged internally with 14-bit resolution. The system can shut itself down in the event of a thermal overload by measuring its own die temperature.

The system uses Maxim’s battery-management UART protocol for robust communications and, when used in conjunction with the MAX17880 12-channel battery monitor, is ideal for automotive battery-management systems that require a high safety-integrity level.

关键特性

  • AEC-Q100 Grade 2 Temperature Range
    • -40°C to 105°C
  • Operating Voltage from 9V to 65V
  • Ultra-Low Power Operation
    • Standby Mode: 2mA
    • Shutdown Mode: 2µA
  • 12 Cell-Voltage Measurement Channels
    • 2mV Accuracy (3.6V, +25°C)
    • 5mV Accuracy (0°C to +45°C)
    • 10mV Accuracy (-40°C to +105°C)
  • 12 Cell-Balancing Switches
    • Up to 650mA per switch
    • Emergency Discharge Mode
  • 2 Temperature Measurement Channels
  • Die Temperature Measurement
  • Automatic Thermal Protection
  • 29 Voltage Threshold Alerts
    • 12 Overvoltage Faults
    • 12 Undervoltage Faults
    • 2 Overtemperature Faults
    • 2 Undertemperature Faults
    • 1 Cell Mismatch Alert
  • 4 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 2 Mbps 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)

应用

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  • 电动自行车
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  • 混合动力电动车(HEV)
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MAX17823HEVKIT: Evaluation Kit for the MAX17823H

质量和环境数据

申请可靠性报告: MAX17823H 
无铅封装的锡(Sn)晶须报告

CAD Symbols and Footprints

  • MAX17823HGCB/V+
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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