SLLSFH8 August   2021 MCT8316A

ADVANCE INFORMATION  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Characteristics of the SDA and SCL bus for Standard and Fast mode
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Output Stage
      2. 8.3.2  Device Interface Modes
        1. 8.3.2.1 Interface - Control and Monitoring
        2. 8.3.2.2 I2C Interface
        3. 8.3.2.3 Hardware Interface - Pin Configuration
      3. 8.3.3  Step-Down Mixed-Mode Buck Regulator
        1. 8.3.3.1 Buck in Inductor Mode
        2. 8.3.3.2 Buck in Resistor mode
        3. 8.3.3.3 Buck Regulator with External LDO
        4. 8.3.3.4 AVDD Power Sequencing on Buck Regulator
        5. 8.3.3.5 Mixed mode Buck Operation and Control
        6. 8.3.3.6 Buck Undervoltage Protection
        7. 8.3.3.7 Buck Overcurrent Protection
      4. 8.3.4  AVDD Linear Voltage Regulator
      5. 8.3.5  Charge Pump
      6. 8.3.6  Slew Rate Control
      7. 8.3.7  Cross Conduction (Dead Time)
      8. 8.3.8  SPEED Control
        1. 8.3.8.1 Analog-Mode Speed Control
        2. 8.3.8.2 PWM-Input Speed Control
        3. 8.3.8.3 Serial-Mode Speed Control
      9. 8.3.9  Starting the Motor Under Different Initial Conditions
        1. 8.3.9.1 Case 1 – Motor is Stationary
        2. 8.3.9.2 Case 2 – Motor is Spinning in the Forward Direction
        3. 8.3.9.3 Case 3 – Motor is Spinning in the Reverse Direction
      10. 8.3.10 Motor Start Sequence
        1. 8.3.10.1 Initial Speed Detect (ISD)
        2. 8.3.10.2 Motor Resynchronization
        3. 8.3.10.3 Reverse Drive
        4. 8.3.10.4 Motor Brake (Motor is stationary)
        5. 8.3.10.5 Motor Coast (Hi-Z)
        6. 8.3.10.6 Motor Startup
          1. 8.3.10.6.1 Align
          2. 8.3.10.6.2 Double Align
          3. 8.3.10.6.3 IPD
            1. 8.3.10.6.3.1 IPD Operation
            2. 8.3.10.6.3.2 IPD Release Mode
            3. 8.3.10.6.3.3 IPD Advance Angle
          4. 8.3.10.6.4 Slow First Cycle Startup
          5. 8.3.10.6.5 Open loop
          6. 8.3.10.6.6 Transition from open to Closed loop
      11. 8.3.11 Closed Loop Operation
        1. 8.3.11.1 120 Degree Commutation
          1. 8.3.11.1.1 High Side Modulation mode
          2. 8.3.11.1.2 Low Side Modulation mode
          3. 8.3.11.1.3 Mixed modulation mode
        2. 8.3.11.2 Variable Commutation (Available only for MCT8316AV)
        3. 8.3.11.3 Commutation Control Lead Angle
        4. 8.3.11.4 Optional Speed loop with Anti-Windup (Available only for MCT8316AV)
      12. 8.3.12 Fast Start-up (<50 ms)
        1. 8.3.12.1 Dynamic Degauss
      13. 8.3.13 Closed loop Accelerate
      14. 8.3.14 Anti-Voltage Surge Function (AVS)
      15. 8.3.15 Fast Deceleration Algorithm
      16. 8.3.16 Active Demagnetization
        1. 8.3.16.1 Active Demagnetization in action
      17. 8.3.17 Motor Stop Options
        1. 8.3.17.1 Coast(Hi-Z) Mode
        2. 8.3.17.2 Recirculation Mode
        3. 8.3.17.3 Low Side Braking
        4. 8.3.17.4 High Side Braking
        5. 8.3.17.5 Active Spin-Down
      18. 8.3.18 PWM Output
      19. 8.3.19 FG Customized Configuration
        1. 8.3.19.1 FG Output Frequency
        2. 8.3.19.2 FG Open-Loop and Lock Behavior
      20. 8.3.20 Protections
        1. 8.3.20.1  VM Supply Undervoltage Lockout
        2. 8.3.20.2  AVDD Undervoltage Lockout (AVDD_UV)
        3. 8.3.20.3  BUCK Undervoltage Lockout (BUCK_UV)
        4. 8.3.20.4  VCP Charge Pump Undervoltage Lockout (CPUV)
        5. 8.3.20.5  Overvoltage Protections (OV)
        6. 8.3.20.6  Overcurrent Protection (OCP)
          1. 8.3.20.6.1 OCP Latched Shutdown (OCP_MODE = 00b)
          2. 8.3.20.6.2 OCP Automatic Retry (OCP_MODE = 01b)
          3. 8.3.20.6.3 OCP Report Only (OCP_MODE = 10b)
          4. 8.3.20.6.4 OCP Disabled (OCP_MODE = 11b)
        7. 8.3.20.7  Buck Overcurrent Protection
        8. 8.3.20.8  Cycle by Cycle Current Limit (CYC_ILIMIT)
          1. 8.3.20.8.1 CYC_ILIMIT Automatic recovery next PWM cycle (CYC_ILIMIT_MODE = 000xb)
          2. 8.3.20.8.2 CYC_ILIMIT Automatic recovery threshold based (CYC_ILIMIT_MODE = 001xb)
          3. 8.3.20.8.3 CYC_ILIMIT Automatic recovery threshold based (CYC_ILIMIT_MODE = 010xb)
          4. 8.3.20.8.4 CYC_ILIMIT Report Only (CYC_ILIMIT_MODE = 0110b)
          5. 8.3.20.8.5 CYC_ILIMIT Disabled (CYC_ILIMIT_MODE = 0111b or 1xxxb)
        9. 8.3.20.9  Lock Detection Current Limit (LOCK_ILIMIT)
          1. 8.3.20.9.1 LOCK_ILIMIT Latched Shutdown (LOCK_ILIMIT_MODE = 00xxb)
          2. 8.3.20.9.2 LOCK_ILIMIT Automatic recovery (LOCK_ILIMIT_MODE = 01xxb)
          3. 8.3.20.9.3 LOCK_ILIMIT Report Only (LOCK_ILIMIT_MODE = 1000b)
          4. 8.3.20.9.4 LOCK_ILIMIT Disabled (LOCK_ILIMIT_MODE = 1xx1b)
        10. 8.3.20.10 Thermal Warning (OTW)
        11. 8.3.20.11 Thermal Shutdown (OTS)
        12. 8.3.20.12 Motor Lock (MTR_LCK)
          1. 8.3.20.12.1 MTR_LCK Latched Shutdown (MTR_LCK_MODE = 00xxb)
          2. 8.3.20.12.2 MTR_LCK Automatic recovery (MTR_LCK_MODE= 01xxb)
          3. 8.3.20.12.3 MTR_LCK Report Only (MTR_LCK_MODE = 1000b)
          4. 8.3.20.12.4 MTR_LCK Disabled (MTR_LCK_MODE = 1xx1b)
        13. 8.3.20.13 Motor Lock Detection
          1. 8.3.20.13.1 Lock1: Abnormal Speed (ABN_SPEED)
          2. 8.3.20.13.2 Lock2: Loss of Sync (LOSS_SYNC)
          3. 8.3.20.13.3 Lock3: No-Motor Fault (NO_MTR)
        14. 8.3.20.14 IPD Faults
    4. 8.4 Device Functional Modes
      1. 8.4.1 Functional Modes
        1. 8.4.1.1 Sleep Mode
        2. 8.4.1.2 Operating Mode
        3. 8.4.1.3 Fault Reset (CLR_FLT)
    5. 8.5 External Interface
      1. 8.5.1 DRVOFF functionality
      2. 8.5.2 DAC output
      3. 8.5.3 SOx output
      4. 8.5.4 Oscillator Source
        1. 8.5.4.1 External Crystal Oscillator mode (Available for MCT8316AV)
        2. 8.5.4.2 External Clock Source (Available for MCT8316AV)
    6. 8.6 EEPROM access and I2C interface
      1. 8.6.1 EEPROM Access
      2. 8.6.2 I2C Serial Interface
    7. 8.7 EERPOM (Non-Volatile) Register Map
      1. 8.7.1 Algorithm_Configuration Registers
      2. 8.7.2 Fault_Configuration Registers
      3. 8.7.3 Hardware_Configuration Registers
      4. 8.7.4 Gate_Driver_Configuration Registers
    8. 8.8 RAM (Volatile) Register Map
      1. 8.8.1 Fault_Status Registers
      2. 8.8.2 System_Status Registers
      3. 8.8.3 Algo_Control Registers
      4. 8.8.4 Device_Control Registers
      5. 8.8.5 System_Status Registers
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Application curves
        1. 9.2.1.1 Motor startup
        2. 9.2.1.2 120 degree and variable commutation
        3. 9.2.1.3 Faster startup time
        4. 9.2.1.4 Maximum speed
        5. 9.2.1.5 Faster deceleration
  10. 10Power Supply Recommendations
    1. 10.1 Bulk Capacitance
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Thermal Considerations
      1. 11.3.1 Power Dissipation
  12. 12Device and Documentation Support
    1. 12.1 Support Resources
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information
    1. 13.1 Tape and Reel Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Features

  • Three-phase BLDC motor driver with integrated sensorless motor control algorithm
    • Code-free high speed trapezoidal control
    • Supports upto 3 kHz (electrical frequency)
    • Very fast startup time (<50 ms)
    • Fast Deceleration (<150 ms)
    • Supports 120° or 150° modulation to improve acoustic performance
    • Windmilling support through forward resynchronization and reverse drive
    • Active Demagnetization to reduce power losses
    • Configurable motor startup and stop options
    • Optional closed loop speed control
    • Anti-voltage surge protections prevents overvoltage
    • Variable monitoring through DACOUT
  • 4.5- to 35-V operating voltage (40-V abs max)
  • High output current capability: 8-A peak
  • Low MOSFET on-state resistance
    • 95-mΩ RDS(ON) (HS + LS) at TA = 25°C
  • Low power sleep mode
    • 3-µA (maximum) at VVM = 24-V, TA = 25°C
  • Speed loop accuracy: 3% with internal clock and 1% with external clock reference
  • Flexible device configuration options
    • MCT8316AV: I2C interface (EEPROM non-volatile memory for storing configuration)
    • MCT8316AT: Hardware pin based configuration
  • Supports up to 100-kHz PWM frequency for low inductance motor support
  • Does not require external current sense resistor
  • Built-in 3.3-V ±5%, 20-mA LDO regulator
  • Built-in 3.3-V/5-V, 170-mA buck regulator
  • DRVOFF independent pin to disable output
  • Spread spectrum and slew rate for EMI mitigation
  • Suite of Integrated protection features
    • Supply undervoltage lockout (UVLO)
    • Motor lock detection (5 different types)
    • Overcurrent protection (OCP)
    • Thermal warning and shutdown (OTW/OTSD)
    • Fault condition indication pin (nFAULT)
    • Optional fault diagnostics over I2C interface