TIDUFC3 January   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 Power Topology
      2. 2.2.2 PCB and Form Factor
      3. 2.2.3 Antenna
    3. 2.3 Highlighted Products
      1. 2.3.1 AWRL6432BGAMFQ1
      2. 2.3.2 TCAN3404DDFRQ1
      3. 2.3.3 TPS65036x-Q1
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
      1. 3.1.1 Getting Started With Hardware
        1. 3.1.1.1 Power Up Option
      2. 3.1.2 Sense-on-Power (SOP)
      3. 3.1.3 AWRL6432 Initialization: Board Programming
    2. 3.2 Test Setup
    3. 3.3 Test Results
  10. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
      3. 4.1.3 Layout Prints
      4. 4.1.4 Altium Project
      5. 4.1.5 Gerber Files
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks
  11. 5About the Author

1 System Description

This reference design is based on AWRL6432, TI’s 60GHz mmWave radar sensor and a fully automotive compliant bill of material (BOM). The small form factor of the design allows an easy evaluation and integration into the end application system.
AWRL6432 device operation is based on Frequency-Modulated Continuous Wave (FMCW) technology. Using two TX antennas for transmitting and three RX antennas for receiving RF signals, this FMCW radar system can capture various data points associated with the distance, angle, and velocity of the reflected radar signal that can be translated into specific motion or presence being detected.
The AWRL6432 device is powered by three rails (3.3V, 1.8V, and 1.2V) in power-optimized topology (3.3V I/O). These power rails are generated by TPS65036x-Q1, a wide VIN, Derby Power Management Integrated Circuits (PMIC) using the 12V battery voltage input. The usage of a single PMIC enables the design to have an extremely small form factor. The 12V input from the battery connects to the VBAT pin coming out in all the three connectors.
The reference design comes with an onboard Controller Area Network (CAN) physical layer (PHY) which helps in communicating with an external automotive network. This design also supports a serial peripheral interface (SPI) based raw data capture.