The BQ79656EVM-021 from Texas Instruments is a state-of-the-art evaluation module designed for the automotive industry, specifically tailored for battery management systems (BMS). This module is part of TI's BQ796xx family, which is known for its precision and reliability in monitoring and protecting Li-ion and Li-polymer battery packs.

Key Features

• High Accuracy Monitoring: The BQ79656EVM-021 provides high-precision voltage and temperature monitoring, ensuring the safety and efficiency of battery packs.
• Advanced Balancing Capabilities: With integrated cell balancing transistors, the module promotes extended battery life and consistent performance across all cells.
• Robust Communication: It supports robust daisy-chained communication through an isolated differential UART, which enhances the signal integrity and reliability of the BMS.
• Flexible Configuration: The module is highly configurable, allowing for customization to meet various application requirements.
• Diagnostics and Protection: It includes comprehensive diagnostics and protection features to prevent overvoltage, undervoltage, overtemperature, and other critical conditions.

Applications

The BQ79656EVM-021 is ideal for a variety of applications within the automotive sector, including:

• Electric and hybrid electric vehicles (EV/HEV)
• e-bikes and e-scooters
• Industrial power tools
• Energy storage systems

Technical Specifications

At the heart of the BQ79656EVM-021 is a robust BQ79656-Q1 battery monitor and balancer IC, ensuring high accuracy and performance. The module includes features such as:

• Support for up to 16 series cell configurations
• Wide operating temperature range suitable for automotive environments
• Integrated charge and discharge FET drive
• Compliance with ISO 26262 and ASIL-D requirements for automotive safety

Getting Started

To facilitate rapid development, the BQ79656EVM-021 evaluation module comes with an easy-to-use GUI (graphical user interface) and comprehensive documentation. Engineers can quickly set up the module, configure it for their specific needs, and begin testing and prototyping with minimal setup time.