SLVUB62B June   2017  – November 2020

 

  1.   Trademarks
  2. 1 About this Manual
  3. 2 Information About Cautions and Warnings
  4. 3 Items Required for Operation
  5. 4 Introduction
  6. 5 Setup
    1. 5.1 Switch, Push Button, Connector, and Test Point Descriptions
      1. 5.1.1  Power Path Jumper Configuration
        1. 5.1.1.1 TPS65988 Jumper Configuration
        2. 5.1.1.2 TPS65987D Jumper Configuration
        3. 5.1.1.3 TPS65987S Jumper Configuration
      2. 5.1.2  DP Source Receptacle
      3. 5.1.3  S1 HRESET Push-Button
      4. 5.1.4  S6 SPI MISO Pull Down Button
      5. 5.1.5  S3: FTDI Enable and Disable
      6. 5.1.6  S2: SPI , I2C, and BusPowerZ Configurations
      7. 5.1.7  J1: Barrel Jack Power Connector
      8. 5.1.8  Barrel Jack Detect
      9. 5.1.9  USB Type B Connector (J11)
      10. 5.1.10 USB Type-CConnector (J2)
      11. 5.1.11 USB Micro B Connector (J9)
      12. 5.1.12 TP13 (5 V), TP8 (3.3 V), and TP12 (1.2 V)
      13. 5.1.13 Aardvark Connector (J10)
      14. 5.1.14 TP10, TP11, TP15, TP16, TP17, TP18, TP9: GND Test Points
      15. 5.1.15 TP1, TP2, TP3 and TP4 – CC1 and CC2 Test Points
      16. 5.1.16 TP14 (PA and PB): VBUS Test Point
      17. 5.1.17 TP7, TP6, and TP5: A-VAR, B-VAR, and System Power Test Points Respectively
      18. 5.1.18 J3 and J4 (Bottom of EVM): Signal Headers
    2. 5.2 LED Indicators Description
      1. 5.2.1 MXCTL0-2 and HPD LEDs (SS MUX Control LED)
      2. 5.2.2 Status LEDs
      3. 5.2.3 S2 Switch Bank Functionality
  7. 6 Using the TPS65988EVM
    1. 6.1 Powering the TPS65988EVM
    2. 6.2 Firmware Configurations
  8. 7 Connecting the EVM
    1. 7.1 Connecting to Various Devices
      1. 7.1.1 Connecting to a Legacy Type-A Device
      2. 7.1.2 Connecting to USB Type-C Devices
      3. 7.1.3 Testing DisplayPort Alternate Mode and USB 2.0 and USB 3.0
        1. 7.1.3.1 Required Hardware
    2. 7.2 Debugging the EVM
      1. 7.2.1 Connection Not Established
      2. 7.2.2 Resetting Behavior
  9. 8 REACH Compliance
  10. 9 TPS65988EVM Schematic
  11. 10TPS65988EVM Board Layout
  12. 11TPS65988EVM Bill of Materials
  13. 12Revision History

5.1.12 TP13 (5 V), TP8 (3.3 V), and TP12 (1.2 V)

Use the TP13, TP8, and TP12 test points to measure the output voltage of the onboard DC/DC converters. These DC/DC converters produce the required voltage rails for full functionality of the EVM including power delivery, powering internal and external circuits, and so forth. These test points allow the user to verify the system supplies on the TPS65988EVM. LDO_1V8 is internally generated for internal circuitry. Use P3V3 to supply VIN_3V3 which then supplies LDO_3V3. Also, use LDO_3V3 as a low-power output for external flash memory. In bus-powered conditions, or self-powered conditions, P3V3 and LDO_3V3 are active. P3V3 has the ability to operate at 4 V to compensate for IR drop through the USB Type-C cable. The P5V supply can operate at 4.5 V at 100% duty cycle, but it is intended to supply the 5 V at 3 A when the barrel jack or system power is connected to the EVM. P5V powers PP_CABLE for both ports as well as the VBUS current sense IC for both ports. Figure 5-27 highlights these test points.

GUID-82A5E308-0B04-4036-A8E4-0FAA81A5DD14-low.pngFigure 5-27 TP13 (5 V), TP8 (3.3 V), and TP12 (1.2 V)