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

2.7.1 Hardware Variant Resistor Settings

The MCT8315ZH and MCT8315ZT devices uses configurable resistor dividers to control the MODE, SLEW, and ADVANCE settings. When using the MCT8315ZH or MCT8315ZT:

  • SPI enable resistors in the Pop. if SPI silkscreen box needs to be depopulated (R13–R16).
  • DIR resistor R17 in the Pop. if HW silkscreen box needs to be populated.
  • The resistor dividers in the HW Variant Resistors silkscreen box needs to be populated according to the desired settings (R20–R22 and R26–R28).

This setup is shown in Figure 3-7.

GUID-20231201-SS0I-370S-FHSJ-XGFWXKZBLHXV-low.pngFigure 2-7 Resistor Divider Settings for MCT8315ZH or MCT8315ZT (Hardware Variants)

Table 3-4 shows the user-adjustable resistor divider settings when using the MCT8315ZH or MCT8315ZT. R20–R22 resistors connect to AVDD and R26–R28 resistors connect to AGND. The default resistor divider configurations are in bold.

Table 2-3 User-Adjustable Resistor Divider Settings for MCT8315ZH or MCT8315ZT (Defaults in Bold)
SettingNameDescriptionResistors
(AVDD and AGND)		ConfigurationSetting
MODEPWM Control ModeSelects the Hall configuration, modulation, Asynchronous Rectification (ASR), and Automatic Asynchronous Rectification (AAR) settingsR22 and R28R28 = 0 ΩAnalog Hall Input, Asynchronous modulation, ASR and AAR Disabled
R28 = 22 kΩDigital Hall Input, Asynchronous modulation, ASR and AAR Disabled
R28 = 100 kΩAnalog Hall Input, Synchronous modulation, ASR and AAR Disabled
R22 = R28 = DNPDigital Hall Input, Synchronous modulation, ASR and AAR Disabled
R22 = 100 kΩAnalog Hall Input, Synchronous modulation, ASR and AAR Enabled
R22 = 22 kΩ Digital Hall Input, Synchronous modulation, ASR and AAR Enabled
R22 = 0 ΩDigital Hall Input, Asynchronous modulation, ASR and AAR Enabled
SLEWSlew RatePhase pin slew rate switching low to high (10-90%) and high to low (90-10%)R21 and R27R27 = 0 Ω25 V/μs
R21 = R27 = DNP50 V/μs
R21 = 47 kΩ125 V/μs
R21 = 0 Ω200 V/μs
ADVANCEAdvanceAdvances the lead angle by a selectable value (in electrical degrees)R20 and R26R26 = 0 Ω0°
R26 = 22 kΩ4°
R26 = 100 kΩ11°
R20 = R26 = DNP15°
R20 = 100 kΩ20°
R20 = 22 kΩ 25°
R20 = 0 Ω30°