SPRUJ71 august   2023

 

  1.   1
  2.   C2000 F28P65x Series LaunchPad Development Kit
  3.   Trademarks
  4. 1Board Overview
    1. 1.1 Kit Contents
    2. 1.2 Features
    3. 1.3 Specifications
      1. 1.3.1 External Power Supply or Accessory Requirements
    4. 1.4 Using the F28P65x LaunchPad
    5. 1.5 BoosterPacks
    6. 1.6 Hardware Revisions
      1. 1.6.1 Revision A
  5. 2Software Development
    1. 2.1 Software Tools and Packages
    2. 2.2 F28P65x LaunchPad Demo Program
    3. 2.3 Programming and Running Other Software on the F28P65x LaunchPad
  6. 3Hardware Description
    1. 3.1 Functional Description and Connections
      1. 3.1.1  Microcontroller
      2. 3.1.2  Power Domains
      3. 3.1.3  LEDs
      4. 3.1.4  Encoder Connectors
      5. 3.1.5  FSI
      6. 3.1.6  CAN
      7. 3.1.7  EtherCAT
      8. 3.1.8  CLB
      9. 3.1.9  Boot Modes
      10. 3.1.10 BoosterPack Sites
      11. 3.1.11 Analog Voltage Reference
      12. 3.1.12 Differential ADC Header
      13. 3.1.13 Other Headers and Jumpers
        1. 3.1.13.1 XDS Isolation Block
        2. 3.1.13.2 BoosterPack Site 2 Power Isolation
        3. 3.1.13.3 Alternate Power
    2. 3.2 Debug Interface
      1. 3.2.1 XDS110 Debug Probe
      2. 3.2.2 XDS110 Output
      3. 3.2.3 Virtual COM Port
    3. 3.3 Alternate Routing
      1. 3.3.1 Overview
      2. 3.3.2 UART Routing
      3. 3.3.3 EQEP Routing
      4. 3.3.4 CAN Routing
      5. 3.3.5 FSI Routing
      6. 3.3.6 PWM DAC
  7. 4Board Design
    1. 4.1 Schematic
    2. 4.2 PCB Layout
    3. 4.3 BOM
    4. 4.4 LAUNCHXL-F28P65X Board Dimensions
  8. 5Frequently Asked Questions
  9. 6References
    1. 6.1 Reference Documents
    2. 6.2 Other TI Components Used in This Design

3.1.13.1 XDS Isolation Block

JP1 is provided to enable isolation between the device and the connected XDS in higher-voltage applications. The area of isolation is defined by the white outline on the upper-side of the LaunchPad. JP1 has two removable shunts to separate the GND and 5 V power of the USB/XDS region and the F28P65x MCU region of the LaunchPad. By default, both shunts are populated and the power is supplied by the connected USB, meaning that the USB and XDS110 are NOT isolated from the F28P65x MCU region. If power isolation is desired, remove the supplied shunts from JP1. In this configuration, one of the two external power options below are required:

  • An external 5-V supply to power the 3.3-V LDO (TPS7A7401), which provides 3.3 V to the F28P65x MCU region of the board.
  • An external 3.3-V supply to power the F28P65x MCU region of the board.

    5 V is generated using the on-board 5 V BOOST (TPS61241).

In an isolated power application with JP1 shunts removed, make sure the proper shunts on the F28P65x MCU region of the board are populated. Refer to Section 3.1.2 for greater detail.