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12-Channel High-Voltage Data Acquisition System

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

产品详情

The MAX17823B is a data acquisition system for the management of high-voltage battery modules. The system features 12-bit SAR ADC that can measure 12 cell voltages and two temperatures in 161μs. 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 (0 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, they are ideal for automotive battery-management systems that require a high safety integrity level.

主要特征

  • 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 150mA per Switch
    • Emergency-Discharge Mode
  • Two Temperature-Measurement Channels
  • Die Temperature Measurement
  • Automatic Thermal Protection
  • 29 Voltage Threshold Alerts
    • 12 Over-Voltage Faults
    • 12 Under-Voltage Faults
    • Two Over-Temperature Faults
    • Two Under-Temperature Faults
    • One Cell Mismatch Alert (highest cell versus lowest cell)
  • Four 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 (Autodetect)
    • 1.5&micros Propagation Delay per Device
    • Packet-Error Checking (PEC)
  • Factory-Trimmed Oscillators
    • No External Crystals Required
  • 10mm x 10mm Package (64-Pin LQFP)

应用/用途

  • 电池组
  • null
  • 电动自行车
  • null
  • 电功率电池备份系统
  • null
  • 电动工具
  • SuperCap备份系统
Parametric specs for Battery Fuel Gauges, Protectors, and Monitors
Functions Status Monitor
Battery Type 1-12 Cell Li-Ion
3-16 Cell Li-Ion
Multi-Cell Li-Ion
Interface UART
Parameters Measured Current
Temperature
Voltage
Applications Host
Pack
Battery Protection Features Over Voltage
Over-Current
Over/Under Voltage
VSUPPLY (V) (min) 9
VSUPPLY (V) (max) 65
Package/Pins LQFP/64
Oper. Temp. (°C) -40 to +105
Budgetary
Price (See Notes)
$6.33 @1k
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简化框图

MAX17823B: Functional Block Diagram MAX17823B: Functional Block Diagram Zoom icon

技术文档

设计与质量

单击下面的标题以查看详情页面

$250.00

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在Maxim的知识库中搜索您所需的答案。

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参量

Parametric specs for Battery Fuel Gauges, Protectors, and Monitors
Functions Status Monitor
Battery Type 1-12 Cell Li-Ion
3-16 Cell Li-Ion
Multi-Cell Li-Ion
Interface UART
Parameters Measured Current
Temperature
Voltage
Applications Host
Pack
Battery Protection Features Over Voltage
Over-Current
Over/Under Voltage
VSUPPLY (V) (min) 9
VSUPPLY (V) (max) 65
Package/Pins LQFP/64
Oper. Temp. (°C) -40 to +105
Budgetary
Price (See Notes)
$6.33 @1k

主要特征

  • 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 150mA per Switch
    • Emergency-Discharge Mode
  • Two Temperature-Measurement Channels
  • Die Temperature Measurement
  • Automatic Thermal Protection
  • 29 Voltage Threshold Alerts
    • 12 Over-Voltage Faults
    • 12 Under-Voltage Faults
    • Two Over-Temperature Faults
    • Two Under-Temperature Faults
    • One Cell Mismatch Alert (highest cell versus lowest cell)
  • Four 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 (Autodetect)
    • 1.5&micros Propagation Delay per Device
    • Packet-Error Checking (PEC)
  • Factory-Trimmed Oscillators
    • No External Crystals Required
  • 10mm x 10mm Package (64-Pin LQFP)

应用/用途

  • 电池组
  • null
  • 电动自行车
  • null
  • 电功率电池备份系统
  • null
  • 电动工具
  • SuperCap备份系统

描述

The MAX17823B is a data acquisition system for the management of high-voltage battery modules. The system features 12-bit SAR ADC that can measure 12 cell voltages and two temperatures in 161μs. 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 (0 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, they are ideal for automotive battery-management systems that require a high safety integrity level.

简化框图

MAX17823B: Functional Block Diagram MAX17823B: Functional Block Diagram Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索您所需的答案。

过滤搜索

Maxim专业的应用工程师团队也可以为您解答技术问题,请 访问Maxim的 支持中心