MAX17823H
12-Channel, High-Voltage Data-Acquisition Systems
Meets Toughest Automotive and Industrial OEM Requirements for Safety, Performance, Reliability with Balancing Currents
MyMaxim SubscriptionsProduct Details
Key Features
Applications/Uses
Simplified Block Diagram
Technical Docs
| Data Sheet | 12-Channel, High-Voltage Data-Acquisition Systems | Sep 09, 2019 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Key Features
- 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)
Applications/Uses
- Battery-Backup Systems (UPS)
- Battery-Powered Tools
- Electric Bikes
- Electric Vehicles (EVs)
- High-Voltage Battery Stacks
- Hybrid Electric Vehicles (HEVs)
- Super-Cap Systems
Description
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.
Simplified Block Diagram
Technical Docs
| Data Sheet | 12-Channel, High-Voltage Data-Acquisition Systems | Sep 09, 2019 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Request a Quote