SLVAEP4 October   2023 BQ79600-Q1 , BQ79612-Q1 , BQ79614-Q1 , BQ79616 , BQ79616-Q1 , BQ79652-Q1 , BQ79654-Q1 , BQ79656-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Introduction
  5. 2 Receiver Topology and Common Mode Voltages
  6. 3 Signal Integrity Requirements
    1. 3.1 Receiver Timing Requirements
    2. 3.2 Receiver Threshold Requirements
  7. 4 Debug Fault Registers
  8. 5 Isolation Types
    1. 5.1 Transformer Isolation
    2. 5.2 Capacitor Only Isolation
    3. 5.3 Capacitor and Choke Isolation
  9. 6 Mixed Isolation Circuits using bq79600-Q1
  10. 7 Ring Architecture
  11. 8 Noise Immunity and Emissions
  12. 9 Daisy Chain Cable Selection
  13. 10References

8 Noise Immunity and Emissions

To determine that the bq7961X daisy chain architecture can be considered in automotive or EV applications, we perform several EMI or EMC tests to showcase the robustness. However, these results will vary based on schematic or pcb layout design choices, external noise sources, distance from UART or MCU connections, and calibration equipment. Reach out to TI sales team or support team representative to receive more details on these specifications passed. Below is a list of common practices in order to replicate best case results.:

  1. Layout Recommendations in the BQ7961x-Q1 Design Recommendations for High Voltage Automotive BMS application note.
  2. Closely follow our reference EVM Schematic and Layout detailed in the BQ79616-Q1, BQ75614-Q1, and BQ79656-Q1 Evaluation Modules.
  3. Common practices include isolating UART or MCU connections with ferrite, beads, filtering components.