SLLSFX9 December   2024 MCF8316D

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Characteristics of the SDA and SCL bus for Standard and Fast mode
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  Output Stage
      2. 6.3.2  Device Interface
        1. 6.3.2.1 Interface - Control and Monitoring
        2. 6.3.2.2 I2C Interface
      3. 6.3.3  Step-Down Mixed-Mode Buck Regulator
        1. 6.3.3.1 Buck in Inductor Mode
        2. 6.3.3.2 Buck in Resistor mode
        3. 6.3.3.3 Buck Regulator with External LDO
        4. 6.3.3.4 AVDD Power Sequencing from Buck Regulator
        5. 6.3.3.5 Mixed Mode Buck Operation and Control
      4. 6.3.4  AVDD Linear Voltage Regulator
      5. 6.3.5  Charge Pump
      6. 6.3.6  Slew Rate Control
      7. 6.3.7  Cross Conduction (Dead Time)
      8. 6.3.8  Motor Control Input Sources
        1. 6.3.8.1 Analog-Mode Motor Control
        2. 6.3.8.2 PWM-Mode Motor Control
        3. 6.3.8.3 I2C-based Motor Control
        4. 6.3.8.4 Frequency-Mode Motor Control
        5. 6.3.8.5 Input Reference Profiles
          1. 6.3.8.5.1 Linear Control Profiles
          2. 6.3.8.5.2 Staircase Control Profiles
          3. 6.3.8.5.3 Forward-Reverse Profiles
          4. 6.3.8.5.4 Multi-Reference Mode Operation
          5. 6.3.8.5.5 Input Reference Transfer Function without Profiler
      9. 6.3.9  Starting the Motor Under Different Initial Conditions
        1. 6.3.9.1 Case 1 – Motor is Stationary
        2. 6.3.9.2 Case 2 – Motor is Spinning in the Forward Direction
        3. 6.3.9.3 Case 3 – Motor is Spinning in the Reverse Direction
      10. 6.3.10 Motor Start Sequence (MSS)
        1. 6.3.10.1 Initial Speed Detect (ISD)
        2. 6.3.10.2 Motor Resynchronization
        3. 6.3.10.3 Reverse Drive
          1. 6.3.10.3.1 Reverse Drive Tuning
        4. 6.3.10.4 Motor Start-up
          1. 6.3.10.4.1 Align
          2. 6.3.10.4.2 Double Align
          3. 6.3.10.4.3 Initial Position Detection (IPD)
            1. 6.3.10.4.3.1 IPD Operation
            2. 6.3.10.4.3.2 IPD Release Mode
            3. 6.3.10.4.3.3 IPD Advance Angle
          4. 6.3.10.4.4 Slow First Cycle Startup
          5. 6.3.10.4.5 Open Loop
          6. 6.3.10.4.6 Transition from Open to Closed Loop
      11. 6.3.11 Closed Loop Operation
        1. 6.3.11.1 Closed Loop Acceleration/Deceleration Slew Rate
        2. 6.3.11.2 Speed PI Control
        3. 6.3.11.3 Current PI Control
        4. 6.3.11.4 Power Control Mode
        5. 6.3.11.5 Current (Torque) Control Mode
        6. 6.3.11.6 Modulation Index Control
        7. 6.3.11.7 Overmodulation
        8. 6.3.11.8 Motor Speed Limit
        9. 6.3.11.9 Input DC Power Limit
      12. 6.3.12 Flux Weakening Control
      13. 6.3.13 Motor Parameters
        1. 6.3.13.1 Motor Resistance
        2. 6.3.13.2 Motor Inductance
        3. 6.3.13.3 Motor Back-EMF constant
      14. 6.3.14 Motor Parameter Extraction Tool (MPET)
      15. 6.3.15 Anti-Voltage Surge (AVS)
      16. 6.3.16 Active Braking
      17. 6.3.17 Output PWM Switching Frequency
      18. 6.3.18 PWM Dithering
      19. 6.3.19 PWM Modulation Schemes
      20. 6.3.20 Dead Time Compensation
      21. 6.3.21 Motor Stop Options
        1. 6.3.21.1 Coast (Hi-Z) Mode
        2. 6.3.21.2 Recirculation Mode
        3. 6.3.21.3 Low-Side Braking
        4. 6.3.21.4 High-Side Braking
        5. 6.3.21.5 Active Spin-Down
      22. 6.3.22 Align Braking
      23. 6.3.23 FG Configuration
        1. 6.3.23.1 FG Output Frequency
        2. 6.3.23.2 FG during Open and Closed Loop States
        3. 6.3.23.3 FG during Fault and Idle States
      24. 6.3.24 Protections
        1. 6.3.24.1  VM Supply Undervoltage Lockout
        2. 6.3.24.2  AVDD Undervoltage Lockout (AVDD_UV)
        3. 6.3.24.3  BUCK Under Voltage Lockout (BUCK_UV)
        4. 6.3.24.4  VCP Charge Pump Undervoltage Lockout (CPUV)
        5. 6.3.24.5  Overvoltage Protection (OVP)
        6. 6.3.24.6  Overcurrent Protection (OCP)
          1. 6.3.24.6.1 OCP Latched Shutdown (OCP_MODE = 00b)
          2. 6.3.24.6.2 OCP Automatic Retry (OCP_MODE = 01b)
        7. 6.3.24.7  Buck Overcurrent Protection
        8. 6.3.24.8  Hardware Lock Detection Current Limit (HW_LOCK_ILIMIT)
          1. 6.3.24.8.1 HW_LOCK_ILIMIT Latched Shutdown
          2. 6.3.24.8.2 HW_LOCK_ILIMIT Automatic Recovery
          3. 6.3.24.8.3 HW_LOCK_ILIMIT Report Only
          4. 6.3.24.8.4 HW_LOCK_ILIMIT Disabled
        9. 6.3.24.9  Lock Detection Current Limit (LOCK_ILIMIT)
          1. 6.3.24.9.1 LOCK_ILIMIT Latched Shutdown
          2. 6.3.24.9.2 LOCK_ILIMIT Automatic Recovery
          3. 6.3.24.9.3 LOCK_ILIMIT Report Only
          4. 6.3.24.9.4 LOCK_ILIMIT Disabled
        10. 6.3.24.10 Motor Lock Detection
          1. 6.3.24.10.1 Lock 1: Abnormal Speed (ABN_SPEED)
          2. 6.3.24.10.2 Lock 2: Abnormal BEMF (ABN_BEMF)
          3. 6.3.24.10.3 Lock3: No-Motor Fault (NO_MTR)
        11. 6.3.24.11 Motor Lock (MTR_LCK)
          1. 6.3.24.11.1 MTR_LCK Latched Shutdown
          2. 6.3.24.11.2 MTR_LCK Automatic Recovery
          3. 6.3.24.11.3 MTR_LCK Report Only
          4. 6.3.24.11.4 MTR_LCK Disabled
        12. 6.3.24.12 EEPROM Fault
        13. 6.3.24.13 I2C CRC Fault
        14. 6.3.24.14 Minimum VM (Undervoltage) Protection
        15. 6.3.24.15 Maximum VM (Overvoltage) Protection
        16. 6.3.24.16 MPET Faults
        17. 6.3.24.17 IPD Faults
        18. 6.3.24.18 FET Thermal Warning (OTW)
        19. 6.3.24.19 FET Thermal Shutdown (TSD_FET)
    4. 6.4 Device Functional Modes
      1. 6.4.1 Functional Modes
        1. 6.4.1.1 Sleep Mode
        2. 6.4.1.2 Standby Mode
        3. 6.4.1.3 Fault Reset (CLR_FLT)
    5. 6.5 External Interface
      1. 6.5.1 DRVOFF Functionality
      2. 6.5.2 DAC outputs
      3. 6.5.3 Current Sense Output
      4. 6.5.4 Oscillator Source
        1. 6.5.4.1 External Clock Source
      5. 6.5.5 External Watchdog
    6. 6.6 EEPROM access and I2C interface
      1. 6.6.1 EEPROM Access
        1. 6.6.1.1 EEPROM Write
        2. 6.6.1.2 EEPROM Read
        3. 6.6.1.3 EEPROM Security
      2. 6.6.2 I2C Serial Interface
        1. 6.6.2.1 I2C Data Word
        2. 6.6.2.2 I2C Write Transaction
        3. 6.6.2.3 I2C Read Transaction
        4. 6.6.2.4 I2C Communication Protocol Packet Examples
        5. 6.6.2.5 I2C Clock Stretching
        6. 6.6.2.6 CRC Byte Calculation
    7. 6.7 EEPROM (Non-Volatile) Register Map
      1. 6.7.1 Algorithm_Configuration Registers
      2. 6.7.2 Fault_Configuration Registers
      3. 6.7.3 Hardware_Configuration Registers
      4. 6.7.4 Internal_Algorithm_Configuration Registers
    8. 6.8 RAM (Volatile) Register Map
      1. 6.8.1 Fault_Status Registers
      2. 6.8.2 System_Status Registers
      3. 6.8.3 Device_Control Registers
      4. 6.8.4 Algorithm_Control Registers
      5. 6.8.5 Algorithm_Variables Registers
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Application Curves
        1. 7.2.1.1 Motor startup
        2. 7.2.1.2 MPET
        3. 7.2.1.3 Dead time compensation
        4. 7.2.1.4 Auto handoff
        5. 7.2.1.5 Anti voltage surge (AVS)
        6. 7.2.1.6 Real time variable tracking using DACOUT
  9. 8 Power Supply Recommendations
    1. 8.1 Bulk Capacitance
  10. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
    3. 9.3 Thermal Considerations
      1. 9.3.1 Power Dissipation
  11. 10Device and Documentation Support
    1. 10.1 Support Resources
    2. 10.2 Trademarks
    3. 10.3 Electrostatic Discharge Caution
    4. 10.4 Glossary
  12. 11Mechanical, Packaging, and Orderable Information
  13. 12Revision History

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ

6.3.10 Motor Start Sequence (MSS)

Figure 6-28 shows the motor-start sequence implemented in the MCF8316D device.

MCF8316D Motor Start SequenceFigure 6-28 Motor Start Sequence
MCF8316D Brake RoutineFigure 6-29 Brake Routine
    Power-On StateThis is the initial state of the Motor Start Sequence (MSS) when MCF8316D is powered on. In this state, MCF8316D configures the peripherals, initializes the algorithm parameters from EEPROM and prepares for driving the motor.
    Sleep/StandbyIn this state, SPEED_REF is set to zero and MCF8316D is either in sleep or standby mode depending on DEV_MODE and SPEED/WAKE pin voltage.
    SPEED_REF > 0 JudgementWhen SPEED_REF is set to greater than zero, MCF8316D exits the sleep/standby state and proceeds to ISD_EN judgement. As long as SPEED_REF is set to zero, MCF8316D stays in sleep/standby state.
    Direction Change Command JudgementWhen a direction change command is received, MCF8316D proceeds to DIR_CHANGE_MODE judgement.
    DIR_CHANGE_MODE JudgementIf DIR_CHANGE_MODE is set to 0b, MCF8316D initiates direction change by proceeding to ISD_EN judgement. Instead, if DIR_CHANGE_MODE is set to 1b, MCF8316D initiates direction change by proceeding to Speed > OPN_CL_HANDOFF_THR judgement.
    ISD_EN JudgementMCF8316D checks to see if the initial speed detect (ISD) function is enabled (ISD_EN = 1b). If ISD is enabled, MSS proceeds to the BEMF < STAT_DETECT_THR judgement. Instead, if ISD is disabled, the MSS proceeds directly to the BRAKE_EN judgement.
    BEMF < STAT_DETECT_THRISD determines the initial condition (speed, angle, direction of spin) of the motor (see Section 6.3.10.1). If motor is deemed to be stationary (BEMF < STAT_DETECT_THR), the MSS proceeds to BRAKE_EN judgement. If the motor is not stationary, MSS proceeds to verify the direction of spin.
    Direction of spin JudgementThe MSS determines whether the motor is spinning in the forward or the reverse direction. If the motor is spinning in the forward direction, the MCF8316D proceeds to the RESYNC_EN judgement. If the motor is spinning in the reverse direction, the MSS proceeds to the RVS_DR_EN judgement.
    RESYNC_EN JudgementIf RESYNC_EN is set to 1b, MCF8316D proceeds to Speed > Open to Closed Loop Handoff (Resync) judgement. If RESYNC_EN is set to 0b, MSS proceeds to HIZ_EN judgement.
    Speed > FW_DRV_RESYN_THR JudgementIf motor speed > FW_DRV_RESYN_THR, MCF8316D uses the speed and position information from the ISD to transition to the closed loop state (see Section 6.3.10.2 ) directly. If motor speed < FW_DRV_RESYN_THR, MCF8316D transitions to open loop state.
    RVS_DR_EN JudgementThe MSS checks to see if the reverse drive function is enabled (RVS_DR_EN = 1b). If it is enabled, the MSS transitions to check speed of the motor in reverse direction. If the reverse drive function is not enabled (RVS_DR_EN = 0b), the MSS advances to the HIZ_EN judgement.
    Speed > OPN_CL_HANDOFF_THR JudgementThe MSS checks to see if the reverse speed is high enough for MCF8316D to decelerate in closed loop. Till the speed (in reverse direction) is above OL_CL_HANDOFF_THR, MSS stays in closed loop deceleration. If speed is below OPN_CL_HANDOFF_THR, then the MSS transitions to open loop deceleration.
    Reverse Closed Loop, Open Loop Deceleration and Zero Speed CrossoverThe MCF8316D resynchronizes in the reverse direction, decelerates the motor in closed loop till motor speed falls below the handoff threshold. (see Reverse Drive). When motor speed in reverse direction is too low, the MCF8316D switches to open-loop, decelerates the motor in open-loop, crosses zero speed, and accelerates in the forward direction in open-loop before entering closed loop operation after motor speed is sufficiently high.
    HIZ_EN JudgementThe MSS checks to determine whether the coast (Hi-Z) function is enabled (HIZ_EN = 1b). If the coast function is enabled (HIZ_EN = 1b), the MSS advances to the coast routine. If the coast function is disabled (HIZ_EN = 0b), the MSS advances to the BRAKE_EN judgement.
    Coast (Hi-Z) RoutineThe device coasts the motor by turning OFF all six MOSFETs for a certain time configured by HIZ_TIME.
    BRAKE_EN JudgementThe MSS checks to determine whether the brake function is enabled (BRAKE_EN = 1b). If the brake function is enabled (BRAKE_EN = 1b), the MSS advances to the brake routine. If the brake function is disabled (BRAKE_EN = 0b), the MSS advances to the motor start-up state (see Section 6.3.10.4).
    Brake RoutineMCF8316D implements either a time based brake (duration configured by BRK_TIME) or a current based brake (brake applied till phase currents < BRK_CURR_THR for BRAKE_CURRENT_PERSIST) based on BRK_CONFIG. Current based brake has a timeout to ensure brake state ends in case phase currents do not drop below BRK_CURR_THR within BRK_TIME. Time based brake can be applied either using high-side or low-side MOSFETs based on BRK_MODE configuration. Current based brake is applied using low-side MOSFETs only.
    Closed Loop StateIn this state, the MCF8316D drives the motor with sensorless FOC based on rotor angle estimation.