SLLSG20 March   2026 MCF8329HS

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings Comm
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Characteristics of the SDA and SCL bus for Standard and Fast mode
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Three Phase BLDC Gate Drivers
      2. 7.3.2  Gate Drive Architecture
        1. 7.3.2.1 Dead time and Cross Conduction Prevention
      3. 7.3.3  AVDD Linear Voltage Regulator
      4. 7.3.4  DVDD Voltage Regulator
        1. 7.3.4.1 AVDD Powered VREG
        2. 7.3.4.2 External Supply for VREG
        3. 7.3.4.3 External MOSFET for VREG Supply
      5. 7.3.5  Low-Side Current Sense Amplifier
      6. 7.3.6  Device Interface Modes
        1. 7.3.6.1 Interface - Control and Monitoring
        2. 7.3.6.2 I2C Interface
      7. 7.3.7  Motor Control Input Options
        1. 7.3.7.1 Analog-Mode Motor Control
        2. 7.3.7.2 PWM-Mode Motor Control
        3. 7.3.7.3 Frequency-Mode Motor Control
        4. 7.3.7.4 I2C based Motor Control
        5. 7.3.7.5 Input Control Signal Profiles
          1. 7.3.7.5.1 Linear Control Profiles
          2. 7.3.7.5.2 Staircase Control Profiles
          3. 7.3.7.5.3 Forward-Reverse Profiles
          4. 7.3.7.5.4 Multi-Reference Mode Operation
          5. 7.3.7.5.5 Input Reference Transfer Function without Profiler
      8. 7.3.8  Bootstrap Capacitor Initial Charging
      9. 7.3.9  Starting the Motor Under Different Initial Conditions
        1. 7.3.9.1 Case 1 – Motor is Stationary
        2. 7.3.9.2 Case 2 – Motor is Spinning in the Forward Direction
        3. 7.3.9.3 Case 3 – Motor is Spinning in the Reverse Direction
      10. 7.3.10 Motor Start Sequence (MSS)
        1. 7.3.10.1 Initial Speed Detect (ISD)
        2. 7.3.10.2 Motor Resynchronization
        3. 7.3.10.3 Reverse Drive
          1. 7.3.10.3.1 Reverse Drive Tuning
        4. 7.3.10.4 Motor Start-up
          1. 7.3.10.4.1 Align
          2. 7.3.10.4.2 Double Align
          3. 7.3.10.4.3 Initial Position Detection (IPD)
            1. 7.3.10.4.3.1 IPD Operation
            2. 7.3.10.4.3.2 IPD Release
            3. 7.3.10.4.3.3 IPD Advance Angle
          4. 7.3.10.4.4 Slow First Cycle Startup
          5. 7.3.10.4.5 Open Loop
          6. 7.3.10.4.6 Transition from Open to Closed Loop
      11. 7.3.11 Closed Loop Operation
        1. 7.3.11.1 Closed loop accelerate
        2. 7.3.11.2 Speed PI Control
        3. 7.3.11.3 Current PI Control
        4. 7.3.11.4 Overmodulation
        5. 7.3.11.5 Power Loop
        6. 7.3.11.6 Modulation Index Control
        7. 7.3.11.7 Motor Speed Limit
        8. 7.3.11.8 Input DC Power Limit
      12. 7.3.12 Maximum Torque Per Ampere (MTPA) Control
      13. 7.3.13 Flux Weakening Control
      14. 7.3.14 Motor Parameters
        1. 7.3.14.1 Motor Resistance
        2. 7.3.14.2 Motor Inductance
        3. 7.3.14.3 Motor Back-EMF constant
      15. 7.3.15 Motor Parameter Extraction Tool (MPET)
      16. 7.3.16 Single Hall Sensor Operation
      17. 7.3.17 Anti-Voltage Surge (AVS)
      18. 7.3.18 Active Braking
      19. 7.3.19 Output PWM Switching Frequency
      20. 7.3.20 PWM Dithering
      21. 7.3.21 Voltage Sense Scaling
      22. 7.3.22 Motor Stop Options
        1. 7.3.22.1 Coast (Hi-Z) Mode
        2. 7.3.22.2 Low-Side Braking
        3. 7.3.22.3 Active Spin-Down
      23. 7.3.23 FG Configuration
        1. 7.3.23.1 FG Output Frequency
        2. 7.3.23.2 FG in Open-Loop
        3. 7.3.23.3 FG During Motor Stop
        4. 7.3.23.4 FG Behavior During Fault
      24. 7.3.24 Protections
        1. 7.3.24.1  PVDD Supply Undervoltage Lockout (PVDD_UV)
        2. 7.3.24.2  AVDD Power on Reset (AVDD_POR)
        3. 7.3.24.3  GVDD Undervoltage Lockout (GVDD_UV)
        4. 7.3.24.4  BST Undervoltage Lockout (BST_UV)
        5. 7.3.24.5  MOSFET VDS Overcurrent Protection (VDS_OCP)
        6. 7.3.24.6  VSENSE Overcurrent Protection (SEN_OCP)
        7. 7.3.24.7  Thermal Shutdown (OTSD)
        8. 7.3.24.8  Hardware Lock Detection Current Limit (HW_LOCK_ILIMIT)
          1. 7.3.24.8.1 HW_LOCK_ILIMIT Latched Shutdown (HW_LOCK_ILIMIT_MODE = 00xb or 010b)
          2. 7.3.24.8.2 HW_LOCK_ILIMIT Automatic recovery (HW_LOCK_ILIMIT_MODE = 011b or 10xb)
          3. 7.3.24.8.3 HW_LOCK_ILIMIT Report Only (HW_LOCK_ILIMIT_MODE = 110b)
          4. 7.3.24.8.4 HW_LOCK_ILIMIT Disabled (HW_LOCK_ILIMIT_MODE = 111b)
        9. 7.3.24.9  Lock Detection Current Limit (LOCK_ILIMIT)
          1. 7.3.24.9.1 LOCK_ILIMIT Latched Shutdown (LOCK_ILIMIT_MODE = 00xb or 010b)
          2. 7.3.24.9.2 LOCK_ILIMIT Automatic Recovery (LOCK_ILIMIT_MODE = 011b or 10xb)
          3. 7.3.24.9.3 LOCK_ILIMIT Report Only (LOCK_ILIMIT_MODE = 110b)
          4. 7.3.24.9.4 LOCK_ILIMIT Disabled (LOCK_ILIMIT_MODE = 111b)
        10. 7.3.24.10 Motor Lock (MTR_LCK)
          1. 7.3.24.10.1 MTR_LCK Latched Shutdown (MTR_LCK_MODE = 00xb or 010b)
          2. 7.3.24.10.2 MTR_LCK Automatic Recovery (MTR_LCK_MODE = 011b or 10xb)
          3. 7.3.24.10.3 MTR_LCK Report Only (MTR_LCK_MODE = 110b)
          4. 7.3.24.10.4 MTR_LCK Disabled (MTR_LCK_MODE = 111b)
        11. 7.3.24.11 Motor Lock Detection
          1. 7.3.24.11.1 Lock 1: Abnormal Speed (ABN_SPEED)
          2. 7.3.24.11.2 Lock 2: Abnormal BEMF (ABN_BEMF)
          3. 7.3.24.11.3 Lock3: No-Motor Fault (NO_MTR)
        12. 7.3.24.12 EEPROM Fault
        13. 7.3.24.13 I2C CRC Fault
        14. 7.3.24.14 Maximum PVDD (Overvoltage) Protection
        15. 7.3.24.15 Minimum PVDD (Undervoltage) Protection
        16. 7.3.24.16 MPET Faults
        17. 7.3.24.17 Dry Run Detection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Functional Modes
        1. 7.4.1.1 Sleep Mode
        2. 7.4.1.2 Standby Mode
        3. 7.4.1.3 Fault Reset (CLR_FLT)
    5. 7.5 External Interface
      1. 7.5.1 DRVOFF - Gate Driver Shutdown Functionality
      2. 7.5.2 DAC outputs
      3. 7.5.3 Current Sense Amplifier Output
      4. 7.5.4 Oscillator Source
        1. 7.5.4.1 Clock (Internal Oscillator) Frequency
        2. 7.5.4.2 External Clock Source
      5. 7.5.5 External Watchdog
    6. 7.6 EEPROM access and I2C interface
      1. 7.6.1 EEPROM Access
        1. 7.6.1.1 EEPROM Write
        2. 7.6.1.2 EEPROM Read
        3. 7.6.1.3 EEPROM Security
      2. 7.6.2 I2C Serial Interface
        1. 7.6.2.1 I2C Data Word
        2. 7.6.2.2 I2C Write Transaction
        3. 7.6.2.3 I2C Read Transaction
        4. 7.6.2.4 Examples of I2C Communication Protocol Packets
        5. 7.6.2.5 I2C Clock Stretching
        6. 7.6.2.6 CRC Byte Calculation
  9. 8 EEPROM (Non-Volatile) Register Map
    1. 8.1 Algorithm_Configuration Registers
    2. 8.2 Fault_Configuration Registers
    3. 8.3 Hardware_Configuration Registers
    4. 8.4 Internal_Algorithm_Configuration Registers
  10. 9 RAM (Volatile) Register Map
    1. 9.1 Fault_Status Registers
    2. 9.2 System_Status Registers
    3. 9.3 Algorithm_Control Registers
    4. 9.4 Device_Control Registers
    5. 9.5 Algorithm_Variables Registers
  11. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Applications
      1.      Detailed Design Procedure
      2.      Bootstrap Capacitor and GVDD Capacitor Selection
      3. 10.2.1 Selection of External MOSFET for VREG Power Supply
      4.      Gate Drive Current
      5.      Gate Resistor Selection
      6.      System Considerations in High Power Designs
      7.      Capacitor Voltage Ratings
      8.      External Power Stage Components
    3. 10.3 UL Recognized Component: MCF8329HSULIREER
      1. 10.3.1 IEC 60730 Functional Safety System (applicable for MCF8329HSULIREER only)
      2. 10.3.2 IEC 60730 Self Test Library (available only in MCF8329HSULIREER)
    4. 10.4 Power Supply Recommendations
      1. 10.4.1 Bulk Capacitance
    5. 10.5 Layout
      1. 10.5.1 Layout Guidelines
      2. 10.5.2 Layout Example
      3. 10.5.3 Thermal Considerations
        1. 10.5.3.1 Power Dissipation
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  13. 12Revision History

7.3.4.3 External MOSFET for VREG Supply

MCF8329HS provides option to drive external MOSFET which can act as regulator and can be used to power internal digital circuitry through VREG pin. In this case VREG must not be connected to AVDD or external 3.3V/5V power supply. This option of connecting external MOSFET can be used to reduce power dissipation in MCF8329HS and transfer the power loss to the external MOSFET, for use cases that have thermal challenges.

The VGS(th) of external MOSFET has to be selected to maintain that the VREG voltage is between 2.2V to 5.5V across operating conditions. Refer Section 10.2.1 for application example design calculations. The input capacitance of external MOSFET need to be less than 2nF to meet startup time EX_SL_DR_ANA (Analog input) or tEX_SL_DR_PWM (PWM input).

Note: The GCTRL pin is a high impedance node (> 1MΩ) and this pin must not be loaded externally other than the external MOSFET gate and CGCTRL. External loading on GCTRL pin (to GND) reduces the voltage at GCTRL pin and VREG pin.
MCF8329HS External MOSFET Voltage Regulator for VREGFigure 7-6 External MOSFET Voltage Regulator for VREG