SLVUCX5 May   2024

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Getting Started
      1. 2.1.1 Getting Started: Single EVM
      2. 2.1.2 Getting Started: Multiple EVM Evaluation
    2. 2.2 EVM Details
      1. 2.2.1 Terminal Blocks
      2. 2.2.2 Test Point Descriptions
      3. 2.2.3 Configuration Headers
      4. 2.2.4 Stack-up Headers
      5. 2.2.5 Connectors
      6. 2.2.6 Dip Switches
      7. 2.2.7 EVM Control and GPIO
    3. 2.3 Customization
      1. 2.3.1 Changing the Communication Interface
      2. 2.3.2 Changing the Phase Configuration
  9. 3Software
    1. 3.1 GUI Tool
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  11. 5Additional Information
    1. 5.1 Additional Resources
    2. 5.2 Trademarks

2.2.7 EVM Control and GPIO

The EVM has a built-in USB interface based on the MSP432E401Y (U3) to allow the GUI, from the host computer, to communicate with the PMIC. The supply voltage required by the MSP432E401Y is generated automatically by the TLV73333PQDRVRQ1 (U11) and TLV73318PQDRVRQ1 (U12) LDOs which provides 3.3V and 1.8V from USB power, +VBUS. These voltages are available for supplying VIO for the PMIC (selectable from J32). Two SN74GTL2003 level shifters (U4, U6) are used in order to support the use case of the PMIC VIO of 1.8V (the MCU IO is always be 3.3V). In addition to the level shifters, the TS3A5018RSVR (U8) switch is used to apply the pullup voltages to the I2C lines only when the EVM is configured as controller (J22). Additional TS3A5018RSVR (U9) switch for SPI enable/disable. The application of the pullup resistors is for I2C mode only and is only intended for one board in a stack-up application. The EVM has four LEDs to indicate board power, on or off, and some predefined PMIC GPOs status. The signals are listed in Table 3-8.

Note: In the stack-up configuration, only controller board can have a valid +VBUS voltage on the board. This means that the controller board can have a connected USB cable supplying +VBUS and that controller board VCCA can be connected to +5.0V through J25, see Table 3-5.
Table 2-8 EVM LED Indicators
LED DesignatorIndication
D1LED is on when nINT is low.
D2LED is on when EN_DRV is high.
D3LED is on when nRSTOUT is low.
D5EVM power indicator.