SLLU393 October   2024

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1 Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Device Information
    4. 1.4 Specification
  8. 2 Hardware
    1. 2.1 Quick Start Guide
    2. 2.2 Hardware Setup
  9. 3 Hardware Connections Overview
  10. 4 Connection Details
  11. 5 MSP430FR2355 Microcontroller & User Interface
  12. 6 LED Lights
  13. 7 User-Configurable Settings
  14. 8 Software
    1. 8.1 Firmware and GUI Application
    2. 8.2 Downloading and running Motor Studio
    3. 8.3 Downloading Code Composer Studio and Importing GUI Firmware
    4. 8.4 Using eZ-FET to Program the Onboard MSP430FR2355
  15. 9 Hardware Design Files
    1. 9.1 Schematics
    2. 9.2 PCB Layouts
    3. 9.3 Bill of Materials (BOM)
  16. 10Additional Information
    1.     Trademarks
  17. 11Revision History

4 Connection Details

Figure 4-1 shows the connections made to the MCF8316DEVM in order to spin a 3-phase sensorless Brushless-DC motor.

An 4.5V to 35V power supply or battery is connected to the VBAT or VM and PGND terminals on connector J7. There is a reverse polarity protection and Pi filter implemented on the VBAT and PGND terminals. To bypass the reverse polarity protection and Pi filter, connect the power supply to the VM terminal or VM test point on the board and PGND.

The three phases of the BLDC motor connect directly to the A, B, and C terminals of the screw terminal connector J8.

MCF8316DEVM Connections from Motor to MCF8316DEVMFigure 4-1 Connections from Motor to MCF8316DEVM

Figure 4-2 shows where the micro-USB cable is plugged into the MCF8316DEVM to provide communication between the evaluation module and GUI. The USB data and 5V power from the USB is converted into UART data and 3.3 V power to power the MSP430FR2355 microcontroller. The 5V from the USB power is limited to 500mA and the 3.3V from the FTDI chip is limited to 30mA. If the user wishes to supply more current to these rails, they may use the 5V_SEL jumper J3 and 3V3_SEL jumper J5 to connect external power rails.

MCF8316DEVM Micro-USB Connector and UART for MCF8316DEVMFigure 4-2 Micro-USB Connector and UART for MCF8316DEVM