SNLU291B March   2021  – August 2022 MCT8316Z

 

  1.   Abstract
  2.   Trademarks
  3. 1Cautions and Warnings
  4. 2Introduction
  5. 3Quick Start Guide
  6. 4Hardware and Software Overview
    1. 4.1 Hardware Connections Overview – MCT8316ZTEVM
    2. 4.2 Connection Details
    3. 4.3 MSP430FR2355 Microcontroller
    4. 4.4 LED Lights
    5. 4.5 User-Configurable Settings
    6. 4.6 Hardware Variant Settings
    7. 4.7 MCT8316Z0R Compatibility
  7. 5Hardware Setup
  8. 6Firmware and GUI Application
    1. 6.1 Downloading Code Composer Studio and Importing GUI Code
    2. 6.2 Using the eZ-FET to Program the MSP430FR2355
    3. 6.3 Importing GUI into GUI Composer
    4. 6.4 MCT8316ZTEVM GUI
  9. 7Schematics
    1. 7.1  Main Supply and Pi Filter
    2. 7.2  Connectors and Interface
    3. 7.3  USB to UART
    4. 7.4  MCU Programming and Debug
    5. 7.5  MSP430FR2355 MCU
    6. 7.6  MCT8316ZT 3-Phase Sensored Trapezoidal Integrated Driver
    7. 7.7  3.3V Buck Regulator
    8. 7.8  Status LEDs
    9. 7.9  Hardware Variant Settings
    10. 7.10 Switches and PWM Input
  10. 8Revision History

6.4 MCT8316ZTEVM GUI

The following features are enabled in the MCT8316ZTEVM GUI:

PWM or Duty Cycle Settings

  • Use the potentiometer on the MCT8316ZTEVM to control the duty cycle of the 20-kHz PWM waveform from the MSP430FR2355. The slider and gauge will update 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 Pole Pairs (#)” drop-down box.
  • The FGOUT frequency is measured and updated real time in the FGOUT Freq (Hz) box.
  • The FGOUT frequency and number of motor poles are used to calculate and update the Motor Speed (RPM) box. The speed is calculated by the Motor Speed Calculation from FGOUT and Pole Pairs formula below. Note that the FGOUT frequency is multiplied by 3 to achieve the frequency of one electrical cycle, in Hz.
Equation 1. M o t o r   S p e e d   R P M = 60 × F G O U T × 3 #   M o t o r   P o l e   P a i r s

Status LEDs and nSLEEP Control

  • The statuses of the programmable MCU LEDs are shown by LED1 and LED2.
  • To place the MCT8316Z into a low-power sleep mode, click the nSLEEP button into the right position. The MSP430 sends an active-low signal to nSLEEP on the device.