SNLU342 December   2023 MCT8315Z

 

  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 Startup 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 Resistor Settings
      2. 2.7.2 SPI Variant Resistor Settings
  9. 3Software
    1. 3.1 Firmware and GUI Application
    2. 3.2 MCT8315Z 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 MCT8315Z 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.     Trademarks

2.5 MSP430FR2355 Microcontroller

The MCT8315ZEVM includes a MSP430FR2355 low-power MCU, shown in Figure 3-5, to provide the pulse-width modulation (PWM) signal required to commutate the motor. The MCU outputs a 20-kHz PWM signal (PWM_MSP), and the duty cycle (ranging from 0–100%) is controlled by the potentiometer R5. The motor speed increases the more the potentiometer is turned counterclockwise, and decreases when turned clockwise. To select whether the PWM signal from the MSP or an external PWM is sourced to the MCT8315Z, use the PWM_SEL jumper J1.

To program the MSP430FR2355, an external MSP430 FET programmer must be connected to the Spy-Bi-Wire (SBW) interface connector J4. Many MSP430 LaunchPads™ provide an onboard eZ-FET Debug Probe that can be jumper-wired to the MCT8315ZEVM to flash the firmware into the MSP430FR2355 microcontroller.

The user can use the Reset (RST) button at any time to restart the MCU program. Two active-low LEDs, D5 and D6, can be used for debug purposes as well.

The 18-pin shunt jumper bridge J6 ties all signals between the microcontroller and the MCT8315Z device. These jumpers can be inserted or removed as needed to isolate the microcontroller from the gate driver. This allows for microcontroller signal debugging or using the MCT8315ZEVM as a standalone gate driver with an external microcontroller.

GUID-20231201-SS0I-5NMB-WXMM-BVFH4NDKBF5W-low.png Figure 2-5 MSP430FR2355 MCU on MCT8315ZEVM