SLVUCG6 November   2022 TPS650350-Q1

 

  1.   TPS650350-Q1 EVM User's Guide
  2.   Trademarks
  3. 1 Introduction
  4. 2 Requirements
  5. 3 Operation Instructions
    1. 3.1 Configuring the USB to I2C Adapter
    2. 3.2 Regulator Input Supplies and Features
      1. 3.2.1 Buck 1 Input Supply
      2. 3.2.2 Mid-Vin Buck1 Features
      3. 3.2.3 Buck 2/LDO Input Supply
      4. 3.2.4 Buck 3 Input Supply
      5. 3.2.5 Low-Vin Buck2 and Buck3 Features
      6. 3.2.6 Low Noise LDO Features
    3. 3.3 Selecting the Logic Supply Voltage
  6. 4 EVM Configurations
  7. 5 Test Points
    1. 5.1 Voltage Test Points
  8. 6 Graphical User Interface
    1. 6.1 TPS650350-Q1 EVM Debugging
      1. 6.1.1 I2C Communication Port and Adapter Debugging
      2. 6.1.2 Updating MCU Firmware
    2. 6.2 Navigating the GUI
      1. 6.2.1 Home
      2. 6.2.2 Block Diagram
      3. 6.2.3 Registers
      4. 6.2.4 Device Configuration
        1. 6.2.4.1 Using Device Configuration to Define Spin Settings
        2. 6.2.4.2 Configuring the Power Sequence
      5. 6.2.5 Re-Program PMIC
    3. 6.3 In-Circuit Programming
  9. 7 Typical Performance Plots
    1. 7.1 Power Sequence Plots
    2. 7.2 Load Transient Plots
    3. 7.3 Output Voltage Ripple Plots
    4. 7.4 LDO Output Noise
  10. 8 TPS650350-Q1 EVM Schematic
  11. 9 TPS650350-Q1 EVM PCB Layers
  12. 10TPS650350-Q1 EVM Bill of Materials

6.1.1 I2C Communication Port and Adapter Debugging

By default, the GUI recognizes two serial ports from the EVM adapter, but may not select the I2C bridge automatically. Once the EVM is powered and the USB cable is connected to the computer, click the connect icon at the bottom left of the GUI. If the bottom notification updates to Hardware Not Selected:

  1. Click the Options menu at the top of the GUI, select Serial Port.
    GUID-7C0A9D9D-B834-4391-90DF-5399BF6348A0-low.pngFigure 6-2 Opening Serial Port Options
  2. Use the Ports dropdown to select the alternative interface.
    GUID-223FC04D-BAA3-4553-A748-8D7C84DC8CFC-low.pngFigure 6-3 Selecting an Alternate Port

After clicking OK, the GUI connects to the device properly. If communication to the EVM is lost, most issues can be resolved by pressing the nRST_MCU button (S3) on the EVM. Afterwards, further issues can be diagnosed by confirming that MCU_IN (J18) is still present, and that the I2C pull-up domain is still active.