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

3.1.2 Power Domains

The F28P65x LaunchPad has several power domains that can be connected or isolated from each other with removable shunts. The different 3.3-V and 5-V power domains are further described in Figure 3-2.

GUID-20230615-SS0I-LPVM-GFMR-FNNCKQ0MLLDP-low.svgFigure 3-2 LaunchPad Power Distribution Diagram

Table 3-1 describes the usage of the different removable shunts on the LaunchPad board.

Table 3-1 Power Domain Shunts
Shunt IdentifierUsage Description
JP1, +5V0Connects the +5-V power from the USB-C connector (+5V0_USB) to the +5-V power on the MCU side of the board (+5V0_MCU). Bridges the power and ground isolations between the two board sides.
JP1, GNDConnects the board Ground on the isolated USB-C connector side of the board (USB_GND) to the rest of the board ground (GND). Bridges the power and ground isolations between the two board sides.
J16Enables the on-board MCU-side 5-V to 3.3-V LDO regulator to convert the +5-V power rail to a +3.3-V power rail.
J17Enables the on-board 3.3-V to 5-V BOOST regulator to convert the +3.3-V power rail to a +5-V power rail.

The F28P65x LaunchPad features a flexible power domain scheme that allows users to supply power to the board in a variety of different configurations. Table 3-2 shows the different power configurations and the required shunts that need to be populated to supply power throughout the board.

Table 3-2 Power Configurations
Power Source Connected Shunts Description of Power Sources
USB-C Connector JP1, J16

+5V0_USB: supplied from the USB-C connector

+5V0_MCU: +5V0_USB passes through JP1 and is the same supply as +5V0_MCU

+3V3_MCU: generated by the MCU-side 5-V to 3.3-V LDO regulator
External +3.3-V (connected to BoosterPack header) J17

+5V0_USB: If debugging the device, +5V0_USB is supplied through the USB-C connector and is isolated from the MCU side +5V0 rail. Else if not debugging, +5V0_USB is not required.

+5V0_MCU: generated by the 3.3-V to 5-V BOOST regulator

+3V3_MCU: supplied by external +3.3V source
External +5.0-V (connected to BoosterPack header) J16

+5V0_USB: If debugging the device, +5V0_USB is supplied through the USB-C connector and is isolated from the MCU side +5V0 rail. Else if not debugging, +5V0_USB is not required.

+5V0_MCU: supplied by external +5.0V source

+3V3_MCU: generated by the MCU-side 5-V to 3.3-V LDO regulator