TIDUF51 November   2023

 

  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 mmWave Sensor Application
      2. 2.2.2 IWR6432 UART Communication
      3. 2.2.3 LAUNCHXLCC1352R1 Communication
      4. 2.2.4 Sensors Application
      5. 2.2.5 Power Supply Design
      6. 2.2.6 IWRL6432 Power Supply Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1 IWRL6432
      2. 2.3.2 CC1352R
      3. 2.3.3 BQ25616
      4. 2.3.4 TPS62850
      5. 2.3.5 HDC3020
      6. 2.3.6 OPT3005
      7. 2.3.7 DRV5032
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
      1. 3.1.1 Getting Started Hardware
        1. 3.1.1.1 IWRL6432FSPEVM Initialization: IWRL6432 Programming
        2. 3.1.1.2 Base Board Initialization: CC1352R Programming
    2. 3.2 Software Requirements
    3. 3.3 Test Setup
      1. 3.3.1 Demonstration Setup
    4. 3.4 Test Results
      1. 3.4.1 Radar Detect Distance Measurement
      2. 3.4.2 People Counting Test Results
      3. 3.4.3 Wireless Range Test Results
      4. 3.4.4 Power Consumption 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 PCB Layout Recommendations
        1. 4.1.3.1 Layout Prints
      4. 4.1.4 Altium Project
      5. 4.1.5 Gerber Files
      6. 4.1.6 Assembly Drawings
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks
  11. 5About the Author

2.2.5 Power Supply Design

This system design considers the following power supply specifications:

  • The IWRL6432 radar requires multiple voltage rails. To get better power consumption, this design uses three power rails: 3.3 V, 1.8 V, and 1.2 V.
GUID-20231102-SS0I-Z0MF-DZHG-BZ8P1WXPXMN2-low.svg Figure 2-7 IWRL6432 3 Power Rails Structure
  • The CC1352R device requires a 3.3-V rail.
  • The humidity and temperature sensor, Hall-effect sensor, ambient light sensor, and PIR sensor all require a 3.3-V rail.
  • The main power supply is 3.0-V to 4.2-V Li-ion battery, with an option for 5-V USB or external DC power.