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

2.7.1 Hardware Variant Settings

The MCT8314ZH devices uses configurable resistor dividers to control the MODE, ADVANCE, FGOUT, and LOCK_DET_TIME settings. When using the MCT8314ZH:

  • SPI enable resistors in the Pop. if SPI silk screen box needs to be depopulated (R10–R13).
  • DIR resistor R14 in the Pop. if HW silk screen box needs be populated with a 0Ω resistor.
  • The resistor dividers in the HW Variant Resistors silk screen box needs be populated according to the desired settings (R16–R18 and R21–R23).

An example of this setup is shown in Figure 3-7.

MCT8314ZEVM Resistor Divider Settings for MCT8314ZH (Hardware Variant) Figure 2-7 Resistor Divider Settings for MCT8314ZH (Hardware Variant)

Table 3-4 shows the user-adjustable resistor divider settings when using the MCT8314ZH. R16–R18 resistors connect to AVDD and R21–R23 resistors connect to AGND. The default resistor divider configurations are in bold.

Table 2-3 User-Adjustable Resistor Divider Settings for MCT8314ZH Variant
SettingNameDescriptionResistors
(AVDD and AGND)		ConfigurationSetting
MODEPWM Control ModeSelects the Hall configuration, modulation, Asynchronous Rectification (ASR), and Automatic Asynchronous Rectification (AAR) settingsR18 and R23R23 = 0ΩAnalog Hall Input, Asynchronous modulation, ASR and AAR Disabled .
R23 = 22kΩDigital Hall Input, Asynchronous modulation, ASR and AAR Disabled.
R23 = 100kΩAnalog Hall Input, Synchronous modulation, ASR and AAR Disabled.
R18 = R23 = DNPDigital Hall Input, Synchronous modulation, ASR and AAR Disabled.
R18 = 100kΩAnalog Hall Input, Synchronous modulation, ASR and AAR Enabled.
R18 = 22kΩDigital Hall Input, Synchronous modulation, ASR and AAR Enabled.
R18 = 0ΩDigital Hall Input, Asynchronous modulation, ASR and AAR Enabled.
FGOUT/L_D_TIMEFGOUT and Motor lock configurationSets the FG output commutation frequency multiplier and time required to detect a motor lock fault conditionR17 and R22R22 = 0ΩMotor Lock Detection time = 100ms and FGOUT = 3x commutation frequency.
R22 = 22kΩMotor Lock Detection time = 500ms and FGOUT = 3x commutation frequency.
R22 = 100kΩMotor Lock Detection time = 1000ms and FGOUT = 3x commutation frequency.
R17 = R22 = DNPMotor Lock Detection time = 5000ms and FGOUT = 3x commutation frequency.
R17 = 100kΩMotor Lock Detection time = 300ms and FGOUT = 1x commutation frequency.
R17 = 22kΩMotor Lock Detection time = 500ms and FGOUT = 1x commutation frequency.
R17 = 0ΩMotor Lock Detection time = 1000ms and FGOUT = 1x commutation frequency.
ADVANCEAdvanceAdvances the lead angle by a selectable value (in electrical degrees)R16 and R21R21 = 0Ω0°
R21 = 22kΩ4°
R21 = 100kΩ11°
R16 = R21 = DNP15°
R16 = 100kΩ20°
R16 = 22kΩ25°
R16 = 0Ω30°