TIDUF46 October   2023

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 Multiplexer Network and Switch Strategy
      2. 2.2.2 Cell Balancing
      3. 2.2.3 Stacked AFE Communication
      4. 2.2.4 Isolated UART Interface to MCU
    3. 2.3 Highlighted Products
      1. 2.3.1 BQ79616
      2. 2.3.2 TMUX1308
      3. 2.3.3 TMUX1574
      4. 2.3.4 TMUX1102
      5. 2.3.5 TPS22810
      6. 2.3.6 ISO7742
      7. 2.3.7 TSD05C
      8. 2.3.8 ESD441
      9. 2.3.9 ESD2CAN24-Q1
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
    2. 3.2 Test Setup
    3. 3.3 Test Results
      1. 3.3.1 Cell Voltage Accuracy
      2. 3.3.2 Temperature Sensing Accuracy
      3. 3.3.3 Cell Voltage and Temperature Sensing Timings
      4. 3.3.4 Cell Balancing and Thermal Performance
      5. 3.3.5 Current Consumption
  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

3 Hardware, Software, Testing Requirements, and Test Results

The key performances of the TIDA-010271 were tested in a TI lab, the end equipment used and test processes and results are described in this section.

Table 3-1 describes the hardware connections for the TIDA-010271 board.

Table 3-1 Top 16s Battery Connector
CONNECTOR AND PIN ASSIGNMENTS FUNCTION OR SCHEMATIC NET NOTES
J21–3 A2_CELL0 Negative terminal of CELL1, connected directly to AVSS GND of top BQ79616
J21–4 A2_CELL0S Negative terminal of CELL1, actual sense connection for VC0 path of top BQ79616
J21–5 A2_CELL1 Positive terminal of CELL1, negative terminal of CELL2 of top BQ79616
J21–6 A2_CELL2 Positive terminal of CELL2, negative terminal of CELL3 of top BQ79616
J21–7 A2_CELL3 Positive terminal of CELL3, negative terminal of CELL4 of top BQ79616
J21–8 A2_CELL4 Positive terminal of CELL4, negative terminal of CELL5 of top BQ79616
J21–9 A2_CELL5 Positive terminal of CELL5, negative terminal of CELL6 of top BQ79616
J21–10 A2_CELL6 Positive terminal of CELL6, negative terminal of CELL7 of top BQ79616
J21–11 A2_CELL7 Positive terminal of CELL7, negative terminal of CELL8 of top BQ79616
J21–12 A2_CELL8 Positive terminal of CELL8, negative terminal of CELL9 of top BQ79616
J21–13 A2_CELL9 Positive terminal of CELL9, negative terminal of CELL10 of top BQ79616
J21–14 A2_CELL10 Positive terminal of CELL10, negative terminal of CELL11 of top BQ79616
J21–15 A2_CELL11 Positive terminal of CELL11, negative terminal of CELL12 of top BQ79616
J21–16 A2_CELL12 Positive terminal of CELL12, negative terminal of CELL13 of top BQ79616
J21–17 A2_CELL13 Positive terminal of CELL13, negative terminal of CELL14 of top BQ79616
J21–18 A2_CELL14 Positive terminal of CELL14, negative terminal of CELL15 of top BQ79616
J21–19 A2_CELL15 Positive terminal of CELL15, negative terminal of CELL16 of top BQ79616
J21–20 A2_CELL16 Positive terminal of CELL16, actual sense connection to VC16 path of top BQ79616
J21–21 A2_CELL_TOP Positive terminal of CELL16, direct connection to BAT, LDOIN of top BQ79616
Table 3-2 Top 16s Thermistor Connector
CONNECTOR AND PIN ASSIGNMENTS FUNCTION OR SCHEMATIC NET NOTES
J9–1 A2_NTC0_C Connection to 10-kΩ pullup and thermistor0 of top BQ79616
J9–2 A2_NTC1_C Connection to 10-kΩ pullup and thermistor1 of top BQ79616
J9–3 A2_NTC2_C Connection to 10-kΩ pullup and thermistor2 of top BQ79616
J9–4 A2_NTC3_C Connection to 10-kΩ pullup and thermistor3 of top BQ79616
J9–5 A2_GND Negative terminal of CELL1, connected directly to AVSS GND of top BQ79616
J9–6 A2_GND Negative terminal of CELL1, connected directly to AVSS GND of top BQ79616
J9–7 A2_NTC4_C Connection to 10-kΩ pullup and thermistor4 of top BQ79616
J9–8 A2_NTC5_C Connection to 10-kΩ pullup and thermistor5 of top BQ79616
J9–9 A2_NTC6_C Connection to 10-kΩ pullup and thermistor6 of top BQ79616
J9–10 A2_NTC7_C Connection to 10-kΩ pullup and thermistor7 of top BQ79616
J9–11 A2_GND Negative terminal of CELL1, connected directly to AVSS GND of top BQ79616
J9–12 A2_GND Negative terminal of CELL1, connected directly to AVSS GND of top BQ79616
J9–13 A2_NTC8_C Connection to 10-kΩ pullup and thermistor8 of top BQ79616
J9–14 A2_NTC9_C Connection to 10-kΩ pullup and thermistor9 of top BQ79616
J9–15 A2_NTC10_C Connection to 10-kΩ pullup and thermistor10 of top BQ79616
J9–16 A2_NTC11_C Connection to 10-kΩ pullup and thermistor11 of top BQ79616
J9–17 A2_GND Negative terminal of CELL1, connected directly to AVSS GND of top BQ79616
J9–18 A2_GND Negative terminal of CELL1, connected directly to AVSS GND of top BQ79616
J9–19 A2_NTC12_C Connection to 10-kΩ pullup and thermistor12 of top BQ79616
J9–20 A2_NTC13_C Connection to 10-kΩ pullup and thermistor13 of top BQ79616
J9–21 A2_NTC14_C Connection to 10-kΩ pullup and thermistor14 of top BQ79616
J9–22 A2_NTC15_C Connection to 10-kΩ pullup and thermistor15 of top BQ79616
J9–23 A2_GND Negative terminal of CELL1, connected directly to AVSS GND of top BQ79616
J9–24 A2_GND Negative terminal of CELL1, connected directly to AVSS GND of top BQ79616
Table 3-3 Top Daisy-Chain (COMH) Connector
CONNECTOR AND PIN ASSIGNMENTS FUNCTION OR SCHEMATIC NET NOTES
J31–3 ISO_A2_COMMH_P COM high-side positive
J31–4 ISO_A2_CO/MMH_N COM high-side negative
Table 3-4 Humidity Sensor Connector
CONNECTOR AND PIN ASSIGNMENTS FUNCTION OR SCHEMATIC NET NOTES
J1–1 A2_CVDD 5-V power supply for Humidity sensor
J1–2 A2_RHS_T_MUX Temperature analog output from Humidity sensor
J1–3 A2_GPIO8 Humidity analog output from Humidity sensor
J1–4 A2_GND GND for Humidity sensor
Table 3-5 Bottom 16s Battery Connector
CONNECTOR AND PIN ASSIGNMENTS FUNCTION OR SCHEMATIC NET NOTES
J10–3 A1_CELL0 Negative terminal of CELL1, connected directly to AVSS GND of bottom BQ79616
J10–4 A1_CELL0S Negative terminal of CELL1, actual sense connection for VC0 path of bottom BQ79616
J10–5 A1_CELL1 Positive terminal of CELL1, negative terminal of CELL2 of bottom BQ79616
J10–6 A1_CELL2 Positive terminal of CELL2, negative terminal of CELL3 of bottom BQ79616
J10–7 A1_CELL3 Positive terminal of CELL3, negative terminal of CELL4 of bottom BQ79616
J10–8 A1_CELL4 Positive terminal of CELL4, negative terminal of CELL5 of bottom BQ79616
J10–9 A1_CELL5 Positive terminal of CELL5, negative terminal of CELL6 of bottom BQ79616
J10–10 A1_CELL6 Positive terminal of CELL6, negative terminal of CELL7 of bottom BQ79616
J10–11 A1_CELL7 Positive terminal of CELL7, negative terminal of CELL8 of bottom BQ79616
J10–12 A1_CELL8 Positive terminal of CELL8, negative terminal of CELL9 of bottom BQ79616
J10–13 A1_CELL9 Positive terminal of CELL9, negative terminal of CELL10 of bottom BQ79616
J10–14 A1_CELL10 Positive terminal of CELL10, negative terminal of CELL11 of bottom BQ79616
J10–15 A1_CELL11 Positive terminal of CELL11, negative terminal of CELL12 of bottom BQ79616
J10–16 A1_CELL12 Positive terminal of CELL12, negative terminal of CELL13 of bottom BQ79616
J10–17 A1_CELL13 Positive terminal of CELL13, negative terminal of CELL14 of bottom BQ79616
J10–18 A1_CELL14 Positive terminal of CELL14, negative terminal of CELL15 of bottom BQ79616
J10–19 A1_CELL15 Positive terminal of CELL15, negative terminal of CELL16 of bottom BQ79616
J10–20 A1_CELL16 Positive terminal of CELL16, actual sense connection to VC16 path of bottom BQ79616
J10–21 A1_CELL_TOP Positive terminal of CELL16, direct connection to BAT, LDOIN of bottom BQ79616
Table 3-6 Bottom 16s Thermistor Connector
CONNECTOR AND PIN ASSIGNMENTS FUNCTION OR SCHEMATIC NET NOTES
J11–1 A1_NTC0_C Connection to 10-kΩ pullup and thermistor0 of bottom BQ79616
J11–2 A1_NTC1_C Connection to 10-kΩ pullup and thermistor1 of bottom BQ79616
J11–3 A1_NTC2_C Connection to 10-kΩ pullup and thermistor2 of bottom BQ79616
J11–4 A1_NTC3_C Connection to 10-kΩ pullup and thermistor3 of bottom BQ79616
J11–5 A1_GND Negative terminal of CELL1, connected directly to AVSS GND of bottom BQ79616
J11–6 A1_GND Negative terminal of CELL1, connected directly to AVSS GND of bottom BQ79616
J11–7 A1_NTC4_C Connection to 10-kΩ pullup and thermistor4 of bottom BQ79616
J11–8 A1_NTC5_C Connection to 10-kΩ pullup and thermistor5 of bottom BQ79616
J11–9 A1_NTC6_C Connection to 10-kΩ pullup and thermistor6 of bottom BQ79616
J11–10 A1_NTC7_C Connection to 10-kΩ pullup and thermistor7 of bottom BQ79616
J11–11 A1_GND Negative terminal of CELL1, connected directly to AVSS GND of bottom BQ79616
J11–12 A1_GND Negative terminal of CELL1, connected directly to AVSS GND of bottom BQ79616
J11–13 A1_NTC8_C Connection to 10-kΩ pullup and thermistor8 of bottom BQ79616
J11–14 A1_NTC9_C Connection to 10-kΩ pullup and thermistor9 of bottom BQ79616
J11–15 A1_NTC10_C Connection to 10-kΩ pullup and thermistor10 of bottom BQ79616
J11–16 A1_NTC11_C Connection to 10-kΩ pullup and thermistor11 of bottom BQ79616
J11–17 A1_GND Negative terminal of CELL1, connected directly to AVSS GND of bottom BQ79616
J11–18 A1_GND Negative terminal of CELL1, connected directly to AVSS GND of bottom BQ79616
J11–19 A1_NTC12_C Connection to 10-kΩ pullup and thermistor12 of bottom BQ79616
J11–20 A1_NTC13_C Connection to 10-kΩ pullup and thermistor13 of bottom BQ79616
J11–21 A1_NTC14_C Connection to 10-kΩ pullup and thermistor14 of bottom BQ79616
J11–22 A1_NTC15_C Connection to 10-kΩ pullup and thermistor15 of bottom BQ79616
J11–23 A1_GND Negative terminal of CELL1, connected directly to AVSS GND of bottom BQ79616
J11–24 A1_GND Negative terminal of CELL1, connected directly to AVSS GND of bottom BQ79616
Table 3-7 Bottom Daisy-Chain (COML) Connector
CONNECTOR AND PIN ASSIGNMENTS FUNCTION OR SCHEMATIC NET NOTES
J30–1 ISO_A1_COMML_N COM low-side negative
J30–2 ISO_A1_COMML_P COM low-side positive
Table 3-8 Bottom Host Interface
CONNECTOR AND PIN ASSIGNMENTS FUNCTION OR SCHEMATIC NET NOTES
J12–1 NA
J12–2 NA
J12–3 A1_NFAULT_C
J12–4 NA
J12–5 A1_GND_ISO
J12–6 A1_USB2ANY_3.3V
J12–7 A1_USB2ANY_TX_3.3
J12–8 A1_USB2ANY_RX_3.3
J12–9 NA
J12–10 NA