TIDUF32 December   2024 ADC128S102QML-SP , INA901-SP , LM117QML-SP , LM193QML-SP , LM4050QML-SP , LMP7704-SP , MSP430FR5969-SP , TMP9R00-SP , TPS7A4501-SP , TPS7H2211-SP , TPS7H5001-SP , TPS7H6003-SP

 

  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 System Control and Processing
      2. 2.2.2 Battery Cell Monitoring
      3. 2.2.3 Temperature Sensing
      4. 2.2.4 Battery Stack Control
      5. 2.2.5 Battery Balancing
      6. 2.2.6 Power Tree and Power Sequencing
    3. 2.3 Highlighted Products
      1. 2.3.1  MSP430FR5969-SP
      2. 2.3.2  ADC128S102QML-SP
      3. 2.3.3  TLV1H103-SEP
      4. 2.3.4  TPS7H2211-SP
      5. 2.3.5  TPS7A4501-SP
      6. 2.3.6  INA901-SP
      7. 2.3.7  INA1H94-SP
      8. 2.3.8  LMP7704-SP
      9. 2.3.9  TMP9R00-SP
      10. 2.3.10 LM117QML-SP
      11. 2.3.11 LM4050QML-SP
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
    2. 3.2 Software Requirements
    3. 3.3 Test Setup
    4. 3.4 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

2 System Overview

Table 2-1 details the system specifications.

Table 2-1 System Specifications
PARAMETER VALUE UNIT
Power Supply 12 or from battery pack V
# of Battery Cells 8 –
Battery Cell Voltage 3–4.2 V
Leakage Current 0.02 μA
Battery Cell Voltage Accuracy ±1 mV
Balancer Current 120 to 169 mA

Table 2-2 lists the jumpers and headers descriptions.

Table 2-2 Jumpers and Headers Descriptions
PARAMETERS NET NAME DESCRIPTION
Power Supply 12V Supply 12V power supply
Supply Sel Select input supply from battery output or external 12V supply
JTAG JTAG JTAG connection
PWM Control J_PWM PWM input
Input/Output Controls J Pump Pump input
Charger Charger input
Batt Eight-cell battery pack input
Load Load output
Voltage Supply J_LS Enables load to rest of circuit
J4 12V or 5V supply for battery pump
J_5V Separates LDO and 5V load
J_1V85 Separates LDO and 1.85V load
J_3V3 Separates 3.3V LDO output and MSP430FR5969-SP
J_3V3_2 Separates 3.3V LDO and ADC128S102-SP
J_2V5 Separates LDO and 2.5V load
J_heater GPIO assigned for turning the battery heater on or off
Communications J6 Temperature control communications
J2 ADC communication to connect to a digital analyzer
J5 Voltage balancing with calibration with 2.5Vref
Battery Monitoring Batt 1 Connect to battery cell 1
Batt 2 Connect to battery cell 2
Batt 3 Connect to battery cell 3
Batt 4 Connect to battery cell 4
Batt 5 Connect to battery cell 5
Batt 6 Connect to battery cell 6
Batt 7 Connect to battery cell 7
Batt 8 Connect to battery cell 8
Temperature Monitoring Sensor 1 Temperature sensor 1
Sensor 2 Temperature sensor 2
Sensor 3 Temperature sensor 3
I2C_pull Enable TMP9R00-SP I2C 3.3V pullup

Table 2-3 lists the test points and the expected value.

Table 2-3 Test Point Descriptions and Expected Values
NET NAME DESCRIPTION EXPECTED VALUE
TP1 12V supply 12V
TP2 Ground 0V
TP3, TP4, TP5, TP6,
TP8, TP9, TP10, TP43		 Ground 0V
TP7 Battery 4 sensing amplifier output 0.565V–4.552V
TP11 Load voltage 24V
TP12 Battery 7 sensing amplifier output 0.565V–4.552V
TP13 Battery 3 sensing amplifier output 0.565V–4.552V
TP14 Battery 6 sensing amplifier output 50.565V–4.552V
TP15 Battery 2 sensing amplifier output 0.565V–4.552V
TP16 Battery output voltage 33.6V
TP17 Battery 8 sensing amplifier output 0.565V–4.552V
TP18 Battery 1 sensing amplifier output 0.565V–4.552V
TP19 Gate voltage 27V
TP20 Short-circuit protection gate voltage 30mV
TP21 Gate voltage 5V
TP22 Charger voltage in 28V
TP23 Load voltage 28V
TP24 Battery output voltage 33.6V
TP25 Battery 8 sensing first amplifier output 2.5V
TP26 Battery 4 sensing first amplifier output 2.5V
TP27 Battery 7 sensing first amplifier output 2.5V
TP28 Battery 3 sensing first amplifier output 2.5V
TP29 Battery 6 sensing first amplifier output 2.5V
TP30 Battery 2 sensing first amplifier output 2.5V
TP31 Gate voltage 26.88V
TP32 Battery 5 sensing amplifier output 5V
TP33 Battery 5 input voltage 21V
TP34 Battery 7 input voltage 29.4V
TP35 Battery 6 input voltage 25.2V
TP36 Battery 4 input voltage 16.8V
TP37 Battery 3 input voltage 12.6V
TP38 Battery 2 input voltage 8.4V
TP39 Battery 1 input voltage 4.2V
TP40 Battery 5 sensing first amplifier output 2.5V
TP41 Battery 7 balancer 29.4V
TP43 Ground 0V
TP45 INA901-SP output 0.6V
TP46 INA901-SP output 0.6V