SLAU927 March   2024 MSPM0G3507

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Hardware Setup
    1. 2.1  EVM Hardware Setup
      1. 2.1.1 EVM Hardware Support
    2. 2.2  Pin Configurations for IPD Usage
    3. 2.3  Pin Configurations for PWM Outputs
    4. 2.4  Pin Configurations for ADC Currents
    5. 2.5  Pin Configurations for ADC Voltages
    6. 2.6  Pin Configurations for Faults
    7. 2.7  Pin Configurations for GPIO Output Functions
    8. 2.8  Pin Configurations for SPI Communication
    9. 2.9  Pin Configurations for UART Communication
    10. 2.10 External Connections for Evaluation Boards
  6. 3Software Setup
    1. 3.1 Software Support
  7. 4GUI Setup
  8. 5Register Map
    1. 5.1 User Control Registers (Base Address = 0x202000C8h)
    2. 5.2 User Input Registers (Base Address = 0x20200000h)
  9. 6Basic Tuning
    1. 6.1 System Configuration Parameters
      1. 6.1.1 Configuring System Parameters from GUI
      2. 6.1.2 Motor Resistance in Milliohms (mΩ)
      3. 6.1.3 Motor Inductance in Microhenries (μH)
      4. 6.1.4 Motor BEMF Constant
      5. 6.1.5 Base Voltage (V)
      6. 6.1.6 Base Current (A)
      7. 6.1.7 Maximum Motor Electrical Speed (Hz)
    2. 6.2 Control Configurations for Basic Motor Spinning
      1. 6.2.1 Basic Motor Startup
        1. 6.2.1.1 Disable ISD
        2. 6.2.1.2 Motor Start Option - Align
        3. 6.2.1.3 Motor Open Loop Ramp
        4. 6.2.1.4 Motor Open Loop Debug
      2. 6.2.2 Controller Configuration for spinning the Motor in Closed Loop
        1. 6.2.2.1 PI Controller Tuning for Closed Loop Speed Control
        2. 6.2.2.2 Testing for Successful Startup into Closed Loop
    3. 6.3 Fault Handling
      1. 6.3.1 Abnormal BEMF Fault [ABN_BEMF]
      2. 6.3.2 Monitoring Power Supply Voltage Fluctuations for Voltage Out of Bound Faults
      3. 6.3.3 No Motor Fault [NO_MTR]
  10. 7Advanced Tuning
    1. 7.1 Control Configurations Tuning
      1. 7.1.1 Initial Speed Detection of the Motor for Reliable Motor Resynchronization
      2. 7.1.2 Unidirectional Motor Drive Detecting Backward Spin
      3. 7.1.3 Preventing Back Spin of Rotor During Startup
      4. 7.1.4 Gradual and Smooth Start up Motion
      5. 7.1.5 Faster Startup Timing
      6. 7.1.6 Stopping Motor Quickly
      7. 7.1.7 Preventing Supply Voltage Overshoot During Motor Stop.
      8. 7.1.8 Protecting the Power supply
    2. 7.2 Hardware Configurations
      1. 7.2.1 Direction Configuration
      2. 7.2.2 Brake Configuration
      3. 7.2.3 Real Time Variable Tracking
  11. 8Revision History

2.5 Pin Configurations for ADC Voltages

The default pin configurations for ADC voltages are shown in the following tables. The required connections are four ADC inputs:

  • Three ADC inputs connected to the three sensed phase voltages from the motor (VSENA,VSENB, VSENC)
  • One ADC input connected to the sensed VM motor voltage (VSENVM)

The sensed voltages are realized using a resistor divider with an optional bypass filtering cap as shown in Figure 2-3. Size the resistors so any motor voltage transients do not exceed the maximum voltage of the ADC inputs. For more information on the resistor divider ratio, see Section 6.1.5.

GUID-20240205-SS0I-ZMZB-5FF4-SVLH5KDSTDKD-low.svg Figure 2-3 ADC Voltage Divider
Note: An optional center tap voltage (CTAP) can be used to sense the motor BEMF.
Table 2-6 Pin Configurations for ADC Phase Voltages
MSPM0 Pin Function DRV Connection DRV Function
A1_6 ADC1, channel 6 input VSENA Phase A sensed voltage output
A0_7 ADC0, channel 7 input VSENB Phase B sensed voltage output
A1_5 ADC1, channel 5 input VSENC Phase C sensed voltage output
Table 2-7 Pin Configurations for ADC DC Bus Voltage Sensing for DRV8316
MSPM0 Pin Function DRV Connection DRV Function
A1_3 ADC1, channel 3 input VSEN -Vm DC bus voltage output
Table 2-8 Pin Configurations for ADC DC Bus Voltage Sensing for DRV8323
MSPM0 Pin Function DRV Connection DRV Function
A0_2 ADC0, channel 2 input VSEN -Vm DC bus voltage output