SNLU341A December   2023  – July 2024 MCT8314Z

 

  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 Quick Start Guide
    2. 2.2 Hardware Setup
    3. 2.3 Hardware Connections Overview
    4. 2.4 Connection Details
    5. 2.5 MSP430FR2355 Microcontroller
    6. 2.6 LED Lights
    7. 2.7 User-Configurable Settings
      1. 2.7.1 Hardware Variant Settings
      2. 2.7.2 SPI Variant Resistor Settings
  9. 3Software
    1. 3.1 Firmware and GUI Application
    2. 3.2 MCT8314Z GUI
    3. 3.3 Running the GUI
    4. 3.4 Downloading Code Composer Studio and Importing GUI Firmware
    5. 3.5 Using the eZ-FET to Program the MSP430FR2355
  10. 4Hardware Design Files
    1. 4.1 Schematics
      1. 4.1.1 MCT8314Z 3-Phase Sensored Trapezoidal Motor Driver
      2. 4.1.2 Power Supplies
      3. 4.1.3 MCU Interface
      4. 4.1.4 User Interface
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  11. 5Additional Information
    1. 5.1 Trademarks
  12. 6Revision History

3.2 MCT8314Z GUI

The following features are enabled in the MCT8314Z GUI:

PWM or Duty Cycle Settings

  • Use the R6 potentiometer on the MCT8314ZEVM to control the duty cycle of the 20kHz PWM waveform from the MSP430FR2355. The slider and gauge updates real-time with the duty cycle from 0–100%.

Motor Settings and Calculations

  • Update the number of motor poles in the motor using the Motor Poles drop-down box.
  • The FGOUT frequency is measured and updated real time in the FGOUT Freq (Hz) box.
  • The value in the FGOUT freq. (Hz) and Motor poles boxes are used to calculate and update the value in the Motor Speed (RPM) box. The value for the RPM speed is calculated by the formula in Equation 1. Note that the FGOUT frequency is multiplied by 120 to achieve the frequency of one electrical cycle, in Hz.
Equation 1. 1Motor Speed RPM=120×FGOUT# Motor Poles×Division Factor

Status LEDs and nSLEEP Control

  • The status of the programmable MCU LEDs are shown by LED1 and LED2.
  • To place the MCT8314Z into a low-power sleep mode, click the nSLEEP button into the right position. This causes the MSP430 to send an active-low signal to nSLEEP on the device.