SLVSCP2F January   2015  – June 2020 DRV10975

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Application Schematic
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 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 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Regulators
        1. 8.3.1.1 Step-Down Regulator
        2. 8.3.1.2 3.3-V and 1.8-V LDO
      2. 8.3.2 Protection Circuits
        1. 8.3.2.1 Thermal Shutdown
        2. 8.3.2.2 Undervoltage Lockout (UVLO)
        3. 8.3.2.3 Overcurrent Protection (OCP)
        4. 8.3.2.4 Lock
      3. 8.3.3 Motor Speed Control
      4. 8.3.4 Sleep or Standby Condition
      5. 8.3.5 Non-Volatile Memory
    4. 8.4 Device Functional Modes
      1. 8.4.1  Motor Parameters
        1. 8.4.1.1 Motor Phase Resistance
        2. 8.4.1.2 BEMF Constant
      2. 8.4.2  Starting the Motor Under Different Initial Conditions
        1. 8.4.2.1 Case 1 – Motor Is Stationary
        2. 8.4.2.2 Case 2 – Motor Is Spinning in the Forward Direction
        3. 8.4.2.3 Case 3 – Motor Is Spinning in the Reverse Direction
      3. 8.4.3  Motor Start Sequence
        1. 8.4.3.1 ISD
        2. 8.4.3.2 Motor Resynchronization
        3. 8.4.3.3 Reverse Drive
        4. 8.4.3.4 Motor Brake
        5. 8.4.3.5 Motor Initialization
          1. 8.4.3.5.1 Align
          2. 8.4.3.5.2 Initial Position Detect (IPD)
            1. 8.4.3.5.2.1 IPD Operation
            2. 8.4.3.5.2.2 IPD Release Mode
            3. 8.4.3.5.2.3 IPD Advance Angle
          3. 8.4.3.5.3 Motor Start
        6. 8.4.3.6 Start-Up Timing
      4. 8.4.4  Start-Up Current Setting
        1. 8.4.4.1 Start-Up Current Ramp-Up
      5. 8.4.5  Closed Loop
        1. 8.4.5.1 Half Cycle Control and Full Cycle Control
        2. 8.4.5.2 Analog Mode Speed Control
        3. 8.4.5.3 Digital PWM Input Mode Speed Control
        4. 8.4.5.4 I2C Mode Speed Control
        5. 8.4.5.5 Closed Loop Accelerate
        6. 8.4.5.6 Control Coefficient
        7. 8.4.5.7 Commutation Control Advance Angle
      6. 8.4.6  Current Limit
        1. 8.4.6.1 Acceleration Current Limit
      7. 8.4.7  Lock Detect and Fault Handling
        1. 8.4.7.1 Lock0: Lock Detection Current Limit Triggered
        2. 8.4.7.2 Lock1: Abnormal Speed
        3. 8.4.7.3 Lock2: Abnormal Kt
        4. 8.4.7.4 Lock3 (Fault3): No Motor Fault
        5. 8.4.7.5 Lock4: Open Loop Motor Stuck Lock
        6. 8.4.7.6 Lock5: Closed Loop Motor Stuck Lock
      8. 8.4.8  AVS Function
        1. 8.4.8.1 Mechanical AVS Function
      9. 8.4.9  PWM Output
      10. 8.4.10 FG Customized Configuration
        1. 8.4.10.1 FG Output Frequency
        2. 8.4.10.2 FG Open-Loop and Lock Behavior
      11. 8.4.11 Diagnostics and Visibility
        1. 8.4.11.1 Motor Status Readback
        2. 8.4.11.2 Motor Speed Readback
          1. 8.4.11.2.1 Two-Byte Register Readback
        3. 8.4.11.3 Motor Electrical Period Readback
        4. 8.4.11.4 BEMF Constant Readback
        5. 8.4.11.5 Motor Estimated Position by IPD
        6. 8.4.11.6 Supply Voltage Readback
        7. 8.4.11.7 Speed Command Readback
        8. 8.4.11.8 Speed Command Buffer Readback
        9. 8.4.11.9 Fault Diagnostics
    5. 8.5 Register Maps
      1. 8.5.1 I2C Serial Interface
      2. 8.5.2 Register Map
      3. 8.5.3 Register Definition
        1. Table 9. Register Description
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Receiving Notification of Documentation Updates
    6. 12.6 Community Resources
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

8.3.4 Sleep or Standby Condition

The DRV10975 is available in either a sleep mode or standby mode version. The DRV10975 enters either sleep or standby to conserve energy. When the device enters either sleep or standby, the motor stops driving. The step-down regulator is disabled in the sleep mode version to conserve more energy. The I2C interface is disabled and any register data not stored in EEPROM will be reset. The step-down regulator remains active in the standby mode version. The register data is maintained, and the I2C interface remains active.

Setting sleepDis = 1 prevents the device from entering into the sleep or standby condition. If the device has already entered into sleep or standby condition, setting sleepDis = 1 will not take it out of the sleep or standby condition. During a sleep or standby condition, the Slp_Stdby status bit (address 0x10, bit 6) will be set.

For different speed command modes, Table 1 shows the timing and command to enter the sleep or standby condition.

Table 1. Conditions to Enter or Exit Sleep or Standby Condition

SPEED COMMAND MODE ENTER STANDBY CONDITION ENTER SLEEP CONDITION EXIT FROM STANDBY CONDITION EXIT FROM SLEEP CONDITION
Analog SPEED pin voltage < VEN_SB for tEN_SB_ANA SPEED pin voltage < VEN_SL for tEN_SL_ANA SPEED pin voltage > VEX_SB for tEX_ SB_ANA SPEED pin voltage > VEX_SL for tEX_ SL_ANA
PWM SPEED pin low (V < VDIG_IL) for tEN_SB_PWM SPEED pin low (V < VDIG_IL) for tEN_SL_PWM SPEED pin high (V > VDIG_IH) for tEX_SB_PWM SPEED pin high (V > VDIG_IH) for tEX_SL_PWM
I2C SpdCtrl[8:0] is programmed as 0 for tEN_SB_PWM SpdCtrl[8:0] is programmed as 0 for tEN_SL_PWM SpdCtrl[8:0] is programmed as non-zero for tEX_SB_PWM SPEED pin high (V > VDIG_IH) for tEX_SL_PWM(PWM mode) or SPEED pin voltage > VEX_SL for tEX_ SL_ANA (Analog mode)

Note that using the analog speed command, a higher voltage is required to exit from the sleep condition than the standby condition. The I2C speed command cannot take the device out of the sleep condition because I2C communication is disabled during the sleep condition.

Speed pin in DRV10975 (Standby version) and DRV10975Z (sleep version) should be in known state (pulled high or low) when the speed is controlled via I2C.