SLUAA16A August   2020  – October 2023 BQ79600-Q1

 

  1.   1
  2.   BQ79600-Q1 Design Recommendations
  3.   Trademarks
  4. 1Circuit Design
    1. 1.1 Power Supply (BAT, CVDD, DVDD, VIO pins)
    2. 1.2 Inhibit Output (INH pin)
    3. 1.3 Communication to Host (MOSI/RX, MISO/TX, nCS, SCLK, nUART/SPI (SPI_RDY) pins)
    4. 1.4 Fault Output (NFAULT pin)
    5. 1.5 Communication to Battery Monitor Device (COMHP, COMHN, COMLP, COMLN pins)
  5. 2Layout Guidelines
    1. 2.1 Ground Planes
    2. 2.2 Bypass Capacitors for Power Supplies and References
    3. 2.3 UART/SPI Communication
    4. 2.4 Daisy Chain Communication
  6. 3Daisy Chain Signal Integrity
    1. 3.1 Daisy Chain Receiver Threshold
    2. 3.2 Common and Differential Mode Noise
    3. 3.3 BCI Performance
    4. 3.4 Radiated Emissions Performance
  7. 4Summary
  8. 5References
  9. 6Revision History

3.3 BCI Performance

Bulk Current Injection (BCI) was performed according to the ISO 11452-4 standard, using longer cable length (3 m) and a baud rate of 1 Mbps. The BCI noise was injected on the communication lines. There were 3 different isolation methods tested:

  • Transformer isolation on BQ79600-Q1 to transformer isolation on BQ79616-Q1
  • Transformer isolation on BQ79600-Q1 to capacitive isolation on BQ79616-Q1
  • Transformer isolation on BQ79600-Q1 to capacitive and choke isolation on BQ79616-Q1

Contact your local TI sales representative for further information on BCI performance.