SLLSFH8A August   2021  – December 2021 MCT8316A

PRODUCTION DATA  

  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
    7. 7.7 Typical Characteristics
  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 from 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-Mode Speed Control
        3. 8.3.8.3 I2C based Speed Control
        4. 8.3.8.4 Frequency-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 (MSS)
        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 Start-up
          1. 8.3.10.4.1 Align
          2. 8.3.10.4.2 Double Align
          3. 8.3.10.4.3 Initial Position Detection (IPD)
            1. 8.3.10.4.3.1 IPD Operation
            2. 8.3.10.4.3.2 IPD Release Mode
            3. 8.3.10.4.3.3 IPD Advance Angle
          4. 8.3.10.4.4 Slow First Cycle Startup
          5. 8.3.10.4.5 Open loop
          6. 8.3.10.4.6 Transition from Open to Closed Loop
      11. 8.3.11 Closed Loop Operation
        1. 8.3.11.1 120o Commutation
          1. 8.3.11.1.1 High-Side Modulation
          2. 8.3.11.1.2 Low-Side Modulation
          3. 8.3.11.1.3 Mixed Modulation
        2. 8.3.11.2 Variable Commutation (Available only in MCT8316AV)
        3. 8.3.11.3 Lead Angle Control
        4. 8.3.11.4 Closed loop accelerate
      12. 8.3.12 Speed Loop (Available only in MCT8316AV)
      13. 8.3.13 Input Power Regulation (Available only in MCT8316AV)
      14. 8.3.14 Anti-Voltage Surge (AVS)
      15. 8.3.15 Output PWM Switching Frequency
      16. 8.3.16 Fast Start-up (< 50 ms)
        1. 8.3.16.1 BEMF Threshold
        2. 8.3.16.2 Dynamic Degauss
      17. 8.3.17 Fast Deceleration
      18. 8.3.18 Active Demagnetization
        1. 8.3.18.1 Active Demagnetization in action
      19. 8.3.19 Motor Stop Options
        1. 8.3.19.1 Coast (Hi-Z) Mode
        2. 8.3.19.2 Recirculation Mode
        3. 8.3.19.3 Low-Side Braking
        4. 8.3.19.4 High-Side Braking
        5. 8.3.19.5 Active Spin-Down
      20. 8.3.20 FG Configuration
        1. 8.3.20.1 FG Output Frequency
        2. 8.3.20.2 FG Open-Loop and Lock Behavior
      21. 8.3.21 Protections
        1. 8.3.21.1  VM Supply Undervoltage Lockout
        2. 8.3.21.2  AVDD Undervoltage Lockout (AVDD_UV)
        3. 8.3.21.3  BUCK Undervoltage Lockout (BUCK_UV)
        4. 8.3.21.4  VCP Charge Pump Undervoltage Lockout (CPUV)
        5. 8.3.21.5  Overvoltage Protection (OVP)
        6. 8.3.21.6  Overcurrent Protection (OCP)
          1. 8.3.21.6.1 OCP Latched Shutdown (OCP_MODE = 00b)
          2. 8.3.21.6.2 OCP Automatic Retry (OCP_MODE = 01b)
          3. 8.3.21.6.3 OCP Report Only (OCP_MODE = 10b)
          4. 8.3.21.6.4 OCP Disabled (OCP_MODE = 11b)
        7. 8.3.21.7  Buck Overcurrent Protection
        8. 8.3.21.8  Cycle-by-Cycle (CBC) Current Limit (CBC_ILIMIT)
          1. 8.3.21.8.1 CBC_ILIMIT Automatic Recovery next PWM Cycle (CBC_ILIMIT_MODE = 000xb)
          2. 8.3.21.8.2 CBC_ILIMIT Automatic Recovery Threshold Based (CBC_ILIMIT_MODE = 001xb)
          3. 8.3.21.8.3 CBC_ILIMIT Automatic Recovery after 'n' PWM Cycles (CBC_ILIMIT_MODE = 010xb)
          4. 8.3.21.8.4 CBC_ILIMIT Report Only (CBC_ILIMIT_MODE = 0110b)
          5. 8.3.21.8.5 CBC_ILIMIT Disabled (CBC_ILIMIT_MODE = 0111b or 1xxxb)
        9. 8.3.21.9  Lock Detection Current Limit (LOCK_ILIMIT)
          1. 8.3.21.9.1 LOCK_ILIMIT Latched Shutdown (LOCK_ILIMIT_MODE = 00xxb)
          2. 8.3.21.9.2 LOCK_ILIMIT Automatic Recovery (LOCK_ILIMIT_MODE = 01xxb)
          3. 8.3.21.9.3 LOCK_ILIMIT Report Only (LOCK_ILIMIT_MODE = 1000b)
          4. 8.3.21.9.4 LOCK_ILIMIT Disabled (LOCK_ILIMIT_MODE = 1xx1b)
        10. 8.3.21.10 Thermal Warning (OTW)
        11. 8.3.21.11 Thermal Shutdown (TSD)
        12. 8.3.21.12 Motor Lock (MTR_LCK)
          1. 8.3.21.12.1 MTR_LCK Latched Shutdown (MTR_LCK_MODE = 00xxb)
          2. 8.3.21.12.2 MTR_LCK Automatic Recovery (MTR_LCK_MODE= 01xxb)
          3. 8.3.21.12.3 MTR_LCK Report Only (MTR_LCK_MODE = 1000b)
          4. 8.3.21.12.4 MTR_LCK Disabled (MTR_LCK_MODE = 1xx1b)
        13. 8.3.21.13 Motor Lock Detection
          1. 8.3.21.13.1 Lock 1: Abnormal Speed (ABN_SPEED)
          2. 8.3.21.13.2 Lock 2: Loss of Sync (LOSS_OF_SYNC)
          3. 8.3.21.13.3 Lock3: No-Motor Fault (NO_MTR)
        14. 8.3.21.14 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 Standby 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 outputs
      3. 8.5.3 SOX Output
      4. 8.5.4 Oscillator Source
        1. 8.5.4.1 External Clock Source (Available for MCT8316AV)
      5. 8.5.5 External Watchdog (Available only in MCT836AV)
    6. 8.6 EEPROM access and I2C interface
      1. 8.6.1 EEPROM Access
        1. 8.6.1.1 EEPROM Write
        2. 8.6.1.2 EEPROM Read
      2. 8.6.2 I2C Serial Interface (Available only in MCT8316AV)
        1. 8.6.2.1 I2C Data Word
        2. 8.6.2.2 I2C Write Operation
        3. 8.6.2.3 I2C Read Operation
        4. 8.6.2.4 Examples of MCT8316A I2C Communication Protocol Packets
        5. 8.6.2.5 Internal Buffers
        6. 8.6.2.6 CRC Byte Calculation
    7. 8.7 EEPROM (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
  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 120o and variable commutation
        3. 9.2.1.3 Faster startup time
        4. 9.2.1.4 Setting the BEMF threshold
        5. 9.2.1.5 Maximum speed
        6. 9.2.1.6 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

Fault_Status Registers

#FAULT_STATUS_FAULT_STATUS_TABLE_1 lists the memory-mapped registers for the Fault_Status registers. All register offset addresses not listed in #FAULT_STATUS_FAULT_STATUS_TABLE_1 should be considered as reserved locations and the register contents should not be modified.

Table 8-54 FAULT_STATUS Registers
AddressAcronymRegister NameSection
E0hGATE_DRIVER_FAULT_STATUSFault Status Register#FAULT_STATUS_FAULT_STATUS_FAULT_STATUS_GATE_DRIVER_FAULT_STATUS
E2hCONTROLLER_FAULT_STATUSFault Status Register#FAULT_STATUS_FAULT_STATUS_FAULT_STATUS_CONTROLLER_FAULT_STATUS

Complex bit access types are encoded to fit into small table cells. #FAULT_STATUS_FAULT_STATUS_LEGEND shows the codes that are used for access types in this section.

Table 8-55 Fault_Status Access Type Codes
Access TypeCodeDescription
Read Type
RRRead
Reset or Default Value
-nValue after reset or the default value

8.8.1.1 GATE_DRIVER_FAULT_STATUS Register (Address = E0h) [Reset = 00000000h]

GATE_DRIVER_FAULT_STATUS is shown in #FAULT_STATUS_FAULT_STATUS_FAULT_STATUS_GATE_DRIVER_FAULT_STATUS_FIGURE and described in #FAULT_STATUS_FAULT_STATUS_FAULT_STATUS_GATE_DRIVER_FAULT_STATUS_TABLE.

Return to the Summary Table.

Status of various faults

Figure 8-74 GATE_DRIVER_FAULT_STATUS Register
3130292827262524
DRIVER_FAULTBK_FLTRESERVEDOCPNPOROVPOTRESERVED
R-0hR-0hR-0hR-0hR-0hR-0hR-0hR-0h
2322212019181716
OTWTSDOCP_HCOCP_LCOCP_HBOCP_LBOCP_HAOCP_LA
R-0hR-0hR-0hR-0hR-0hR-0hR-0hR-0h
15141312111098
RESERVEDOTP_ERRBUCK_OCPBUCK_UVVCP_UVRESERVED
R-0hR-0hR-0hR-0hR-0hR-0h
76543210
RESERVED
R-0h
Table 8-56 GATE_DRIVER_FAULT_STATUS Register Field Descriptions
BitFieldTypeResetDescription
31DRIVER_FAULTR0h Logic OR of driver fault registers

0h = No Gate Driver fault condition is detected

1h = Gate Driver fault condition is detected

30BK_FLTR0h Buck fault

0h = No buck regulator fault condition is detected

1h = Buck regulator fault condition is detected

29RESERVEDR0h Reserved
28OCPR0h Overcurrent protection status

0h = No overcurrent condition is detected

1h = Overcurrent condition is detected

27NPORR0h Supply power on reset

0h = Power on reset condition is detected on VM

1h = No power-on-reset condition is detected on VM

26OVPR0h Supply overvoltage protection status

0h = No overvoltage condition is detected on VM

1h = Overvoltage condition is detected on VM

25OTR0h Overtemperature fault status

0h = No overtemperature warning / shutdown is detected

1h = Overtemperature warning / shutdown is detected

24RESERVEDR0h Reserved
23OTWR0h Overtemperature warning status

0h = No overtemperature warning is detected

1h = Overtemperature warning is detected

22TSDR0h Overtemperature shutdown status

0h = No overtemperature shutdown is detected

1h = Overtemperature shutdown is detected

21OCP_HCR0h Overcurrent status on high-side switch of OUTC

0h = No overcurrent detected on high-side switch of OUTC

1h = Overcurrent detected on high-side switch of OUTC

20OCP_LCR0h Overcurrent status on low-side switch of OUTC

0h = No overcurrent detected on low-side switch of OUTC

1h = Overcurrent detected on low-side switch of OUTC

19OCP_HBR0h Overcurrent status on high-side switch of OUTB

0h = No overcurrent detected on high-side switch of OUTB

1h = Overcurrent detected on high-side switch of OUTB

18OCP_LBR0h Overcurrent status on low-side switch of OUTB

0h = No overcurrent detected on low-side switch of OUTB

1h = Overcurrent detected on low-side switch of OUTB

17OCP_HAR0h Overcurrent status on high-side switch of OUTA

0h = No overcurrent detected on high-side switch of OUTA

1h = Overcurrent detected on high-side switch of OUTA

16OCP_LAR0h Overcurrent status on low-side switch of OUTA

0h = No overcurrent detected on low-side switch of OUTA

1h = Overcurrent detected on low-side switch of OUTA

15RESERVEDR0h Reserved
14OTP_ERRR0h One-time programmable (OTP) error

0h = No OTP error is detected

1h = OTP Error is detected

13BUCK_OCPR0h Buck regulator overcurrent status

0h = No buck regulator overcurrent is detected

1h = Buck regulator overcurrent is detected

12BUCK_UVR0h Buck regulator undervoltage status

0h = No buck regulator undervoltage is detected

1h = Buck regulator undervoltage is detected

11VCP_UVR0h Charge pump undervoltage status

0h = No charge pump undervoltage is detected

1h = Charge pump undervoltage is detected

10-0RESERVEDR0h Reserved

8.8.1.2 CONTROLLER_FAULT_STATUS Register (Address = E2h) [Reset = 00000000h]

CONTROLLER_FAULT_STATUS is shown in #FAULT_STATUS_FAULT_STATUS_FAULT_STATUS_CONTROLLER_FAULT_STATUS_FIGURE and described in #FAULT_STATUS_FAULT_STATUS_FAULT_STATUS_CONTROLLER_FAULT_STATUS_TABLE.

Return to the Summary Table.

Status of various faults

Figure 8-75 CONTROLLER_FAULT_STATUS Register
3130292827262524
CONTROLLER_FAULTRESERVEDIPD_FREQ_FAULTIPD_T1_FAULTIPD_T2_FAULTRESERVED
R-0hR-0hR-0hR-0hR-0hR-0h
2322212019181716
ABN_SPEEDLOSS_OF_SYNCNO_MTRMTR_LCKCBC_ILIMITLOCK_ILIMITMTR_UNDER_VOLTAGEMTR_OVER_VOLTAGE
R-0hR-0hR-0hR-0hR-0hR-0hR-0hR-0h
15141312111098
EXT_WD_TIMEOUTRESERVED
R-0hR-0h
76543210
RESERVEDSTL_ENSTL_STATUSAPP_RESET
R-0hR-0hR-0hR-0h
Table 8-57 CONTROLLER_FAULT_STATUS Register Field Descriptions
BitFieldTypeResetDescription
31CONTROLLER_FAULTR0h Logic OR of controller fault registers

0h = No controller fault condition is detected

1h = Controller fault condition is detected

30RESERVEDR0h Reserved
29IPD_FREQ_FAULTR0h Indicates IPD frequency fault

0h = No IPD frequency fault detected

1h = IPD frequency fault detected

28IPD_T1_FAULTR0h Indicates IPD T1 fault

0h = No IPD T1 fault detected

1h = IPD T1 fault detected

27IPD_T2_FAULTR0h Indicates IPD T2 fault

0h = No IPD T2 fault detected

1h = IPD T2 fault detected

26-24RESERVEDR0h Reserved
23ABN_SPEEDR0h Indicates abnormal speed motor lock condition

0h = No abnormal speed fault detected

1h = Abnormal speed fault detected

22LOSS_OF_SYNCR0h Indicates sync lost motor lock condition

0h = No sync lost fault detected

1h = Sync lost fault detected

21NO_MTRR0h Indicates no motor fault

0h = No motor fault not detected

1h = No motor fault detected

20MTR_LCKR0h Indicates when one of the motor lock is triggered

0h = Motor lock fault not detected

1h = Motor lock fault detected

19CBC_ILIMITR0h Indicates CBC current limit fault

0h = No CBC fault detected

1h = CBC fault detected

18LOCK_ILIMITR0h Indicates lock detection current limit fault

0h = No lock current limit fault detected

1h = Lock current limit fault detected

17MTR_UNDER_VOLTAGER0h Indicates motor undervoltage fault

0h = No motor undervoltage detected

1h = Motor undervoltage detected

16MTR_OVER_VOLTAGER0h Indicates motor overvoltage fault

0h = No motor overvoltage detected

1h = Motor overvoltage detected

15EXT_WD_TIMEOUTR0h Indicates external watchdog timeout fault

0h = No external watchdog timeout fault detected

1h = External watchdog timeout fault detected

14-3RESERVEDR0h Reserved
2STL_ENR0h Indicates STL is enabled in EEPROM

0h = STL Disable

1h = STL Enable

1STL_STATUSR0h Indicates STL success criteria Pass = 1b; Fail = 0b

0h = STL Fail

1h = STL Pass

0APP_RESETR0h App reset

0h = App Reset Fail

1h = App Reset Successful