TIDUFI0 May   2026

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Terminology
    2. 1.2 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1  F29P32X
      2. 2.3.2  LM74930-Q1
      3. 2.3.3  WSS001
      4. 2.3.4  LM68645-Q1
      5. 2.3.5  TPS653860-Q1
      6. 2.3.6  DRV3263-Q1
      7. 2.3.7  DRV3233-Q1
      8. 2.3.8  DRV8263-Q1
      9. 2.3.9  DRV8243-Q1
      10. 2.3.10 TMAG6180-Q1
      11. 2.3.11 TCAN1043H-Q1
      12. 2.3.12 TCAN1043-Q1
      13. 2.3.13 LDC5072-Q1
    4. 2.4 System Design Theory
      1. 2.4.1 Hardware Design
        1. 2.4.1.1 Power Tree Design
        2. 2.4.1.2 PMIC Design
        3. 2.4.1.3 DC/DC Converter Design
        4. 2.4.1.4 Motor Gate Driver Design
        5. 2.4.1.5 Motor Phase Current Sensing
        6. 2.4.1.6 Overcurrent Protection for F29P32
        7. 2.4.1.7 Motor Driver Protection by PMIC
        8. 2.4.1.8 CAN Transceiver Design
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Getting Started Hardware
      1. 3.1.1 Board Power On Sequence
      2. 3.1.2 Test Conditions
      3. 3.1.3 Test Equipment Required for Board Validation
    2. 3.2 Test Results
      1. 3.2.1 Power on Sequence of PMIC
      2. 3.2.2 F29P32 Reset Sequence
      3. 3.2.3 25MHz Clock
      4. 3.2.4 Sequence to Use External 1.25V
    3. 3.3 Getting Started F29P32 Firmware
  10. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 Bill of Materials
      3. 4.1.3 PCB Layout Recommendations
      4. 4.1.4 Altium Project
      5. 4.1.5 Gerber Files
    2. 4.2 Software Files
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks
  11. 5About the Author

3.1.1 Board Power On Sequence

Figure 2-1 shows power tree design of this reference design.

TIDA-020106 Power Tree designFigure 3-1 Power Tree design

48V/12V_IN_FILTERED is monitored and controlled by the ideal diode controller LM74930-Q1, during powering on, INH of CAN transceiver TCAN1043H will stay high for about 300mS, LM68645-Q1, TPS653860-Q1 and F29P32 starts up within this 300mS time, and F29P32 sets nSTB_CANx ans EN_CANx to be high level to make sure CAN transceiver is enabled and INH is still high after this 300mS startup time. After power on, PMIC outputs:

  • 3.3V at LDO1
  • 5V at LDO2
  • 3.3V at LDO3

Buck converter TTPS62902-Q1 will create 1.25V for F29P32 core voltage supply.

TI recommends taking the following precautions when using the board:

WARNING:
  • Do not touch any part of the board or components connected to the board when the board is energized.