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

6.3 In-Circuit Programming

The TPS650350-Q1 EVM demonstrates the in-circuit programming capabilities of the TPS650350-Q1 PMIC in a typical application. This section provides an example in-circuit programming procedure with application considerations.

  1. Verify the desired power, sequence, and other settings using the GUI's Sequencing Overview tools. See Configuring the Power Sequence.
  2. Once settings are verified and validated, configure the TPS650350-Q1 EVM for a typical camera application:
    1. Ensure the I2C pull-up jumper is populated at J6.
    2. Supply the PMIC VIO with either the Buck 1 or Buck 2 output. See Selecting the Logic Supply Voltage.
    3. Tie the PMIC VSYS/PVIN_B1 input voltage to VIN. See Buck 1 Input Supply.
    4. Supply the PMIC Buck 2, Buck 3, and LDO with the Buck 1 output. See Selecting Regulator Input Supplies.
  3. Assert SEQ (S1) before applying power.
  4. Apply a Buck 1 input voltage (typical is 12 V) to power up the device. By default, the Buck 1 and Buck 2 regulators are enabled, allowing the 3.3 V and 1.8 V rails to power up.
    1. In a typical camera application, this may be sufficient to power up the serializer and enable PMIC programming over the Serializer-Deserializer (SerDes) back-channel.
    2. If additional rails are required, assert GPIO (S4) to enable the Buck 3 and LDO regulators.
  5. Unlock the configuration and control registers.
  6. Re-program the PMIC settings. If changing a regulator output voltage, TI recommends disabling the regulator first. If doing this in an application setting shuts down a critical component, change the output voltage in small steps to prevent triggering under or over-voltage fault handling.
  7. If the device configuration Cyclic Redundancy Check (CRC) is enabled, calculate and write the new configuration CRC by running the GUI's built-in script. For more information on the GUI's capabilities for programming automation, see the BOOSTXL-TPS65033 User's Guide.
    GUID-E020D1B1-FF4B-4080-AA6A-854E4A6712A8-low.pngFigure 6-14 GUI Configuration CRC Script
  8. Burn the final PMIC register settings to EEPROM.
  9. Validate the settings on subsequent startups.