TIDUF92 December   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Wired System Description
    2. 1.2 Wireless System Description
    3. 1.3 Power Supply Options
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1 BQ79718B-Q1
      2. 2.3.2 TPS3436-Q1
      3. 2.3.3 TPS715-Q1
      4. 2.3.4 TPD6E004
      5. 2.3.5 CC2662R-Q1
      6. 2.3.6 TXU0204-Q1
      7. 2.3.7 ISO7741-Q1
      8. 2.3.8 ESD2CAN24-Q1
      9. 2.3.9 LM5168-Q1
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
    2. 3.2 Test Setup
      1. 3.2.1 Hardware Setup
      2. 3.2.2 Software Setup
    3. 3.3 Test Results
  10. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks
  11. 5About the Author

1.2 Wireless System Description

This design integrates the BQ79718B-Q1, a precise 18-cell automotive-grade battery monitor, with the CC2662-Q1 wireless BMS MCU.

This combination of TI ICs enables engineers to create a network of devices that transmit battery monitoring data through the 2.4GHz Wireless Battery Monitoring System (WBMS) communications protocol. Exploring the functionality of this design shows how to streamline operations and significantly reduce the need for extensive wiring harnesses in Electric Vehicles (EVs).

A WBMS represents technology that enables monitoring and control of multiple batteries in a distributed system without the need for physical wires or cables. The system achieves this through wireless communication protocols, such as radio frequency (RF), Bluetooth®, or cellular connectivity.

The benefits of a WBMS include:

  • Reduced cabling complexity and weight
  • Increased flexibility and scalability for system upgrades or modifications
  • Lower maintenance costs through reduced manual intervention and automated system control