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

4.6 Hardware Variant Settings

The MCT8316ZT device uses the configurable resistors to control the MODE, SLEW, ADVANCE, and VSEL_BUCK settings.

When using the MCT8316ZT, the SPI enable resistors in the “Depop. if H/W Variant” silk screen box are to be depopulated (R13–R16) and the resistor dividers in the “H/W Variant Resistors” silk screen box are populated with the desired settings (R19–R22 and R26–R29). This setup is shown in Figure 4-6.

GUID-20210126-CA0I-K78F-KPNG-CQZSCSD8LSPK-low.png Figure 4-6 Resistor Divider Settings for MCT8316ZT (Hardware Variant)

Table 4-3 shows the user-adjustable resistor divider settings when using the MCT8316ZT. R19–R22 resistors connect to AVDD and R26–R29 resistors connect to AGND. The defaults of the two tables are in bold.

Table 4-3 User-Adjustable Resistor Divider Settings for MCT8316ZT Variant (Defaults in Bold)
Setting Name Description Resistors
(AVDD and AGND)		 Configuration Setting
VSEL_BK VBK Buck regulator average voltage

(LBK = 47 or 22 μH,
CBK = 22 μF)

 R21 and R28 R28 = 0 Ω 3.3 V
R21 = R28 = DNP 5.0 V
R21 = 47 kΩ 4.0 V
R21 = 0 Ω 5.7 V
MODE PWM Control Mode Selects the Hall configuration, modulation, Asynchronous Rectification (ASR), and Automatic Asynchronous Rectification (AAR) settings R22 and R29 R29 = 0 Ω Analog Hall Input, Asynchronous modulation, ASR and AAR Disabled
R29 = 22 kΩ Digital Hall Input, Asynchronous modulation, ASR and AAR Disabled
R29 = 100 kΩ Analog Hall Input, Synchronous modulation, ASR and AAR Disabled
R22 = R29 = DNP Digital Hall Input, Synchronous modulation, ASR and AAR Disabled
R22 = 100 kΩ Analog Hall Input, Synchronous modulation, ASR and AAR Enabled
R22 = 22 kΩ Digital Hall Input, Synchronous modulation, ASR and AAR Enabled
R22 = 0 Ω Digital Hall Input, Asynchronous modulation, ASR and AAR Enabled
SLEW Slew Rate Phase pin slew rate switching low to high (10-90%) and high to low (90-10%) R19 and R26 R26 = 0 Ω 25 V/μs
R19 = R26 = DNP 50 V/μs
R19 = 47 kΩ 125 V/μs
R19 = 0 Ω 200 V/μs
ADV Advance Advances the lead angle by a selectable value (in electrical degrees) R20 and R27 R27 = 0 Ω 0°
R27 = 22 kΩ 4°
R27 = 100 kΩ 11°
R20 = R27 = DNP 15°
R20 = 100 kΩ 20°
R20 = 22 kΩ 25°
R20 = 0 Ω 30°