ZHCSP55A October   2019  – October 2021 DRV10982-Q1

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 说明（续）
  6. 6 Pin Configuration and 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
        4. 8.3.2.4 Lock
      3. 8.3.3 Motor Speed Control
      4. 8.3.4 Load Dump Handling
      5. 8.3.5 Sleep or Standby Condition
        1. 8.3.5.1 Required Sequence to Enter Sleep Mode
          1. 8.3.5.1.1 Option 1
          2. 8.3.5.1.2 Option 2
      6. 8.3.6 EEPROM Access
    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 Initial Speed Detect
        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  Align Current
      5. 8.4.5  Start-Up Current Setting
        1. 8.4.5.1 Start-Up Current Ramp-Up
      6. 8.4.6  Closed Loop
        1. 8.4.6.1 Half-Cycle Control and Full-Cycle Control
        2. 8.4.6.2 Analog-Mode Speed Control
        3. 8.4.6.3 Digital PWM-Input-Mode Speed Control
        4. 8.4.6.4 I2C-Mode Speed Control
        5. 8.4.6.5 Closed-Loop Accelerate
        6. 8.4.6.6 Control Coefficient
        7. 8.4.6.7 Commutation Control Advance Angle
      7. 8.4.7  Current Limit
        1. 8.4.7.1 Acceleration Current Limit
      8. 8.4.8  Lock Detect and Fault Handling
        1. 8.4.8.1 Lock0: Lock-Detection Current Limit Triggered
        2. 8.4.8.2 Lock1: Abnormal Speed
        3. 8.4.8.3 Lock2: Abnormal Kt
        4. 8.4.8.4 Lock3 (Fault3): No-Motor Fault
        5. 8.4.8.5 Lock4: Open-Loop Motor-Stuck Lock
        6. 8.4.8.6 Lock5: Closed Loop Motor Stuck Lock
      9. 8.4.9  Anti Voltage Suppression Function
        1. 8.4.9.1 Mechanical AVS Function
        2. 8.4.9.2 Inductive AVS Function
      10. 8.4.10 PWM Output
      11. 8.4.11 FG Customized Configuration
        1. 8.4.11.1 FG Output Frequency
        2. 8.4.11.2 FG Open Loop and Lock Behavior
      12. 8.4.12 Diagnostics and Visibility
        1. 8.4.12.1 Motor-Status Readback
        2. 8.4.12.2 Motor-Speed Readback
        3. 8.4.12.3 Motor Electrical-Period Readback
        4. 8.4.12.4 BEMF Constant Read Back
        5. 8.4.12.5 Motor Estimated Position by IPD
        6. 8.4.12.6 Supply-Voltage Readback
        7. 8.4.12.7 Speed-Command Readback
        8. 8.4.12.8 Speed-Command Buffer Readback
        9. 8.4.12.9 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 Descriptions
        1. 8.5.3.1  FaultReg Register (address = 0x00) [reset = 0x00]
        2. 8.5.3.2  MotorSpeed Register (address = 0x01) [reset = 0x00]
        3. 8.5.3.3  MotorPeriod Register (address = 0x02) [reset = 0x00]
        4. 8.5.3.4  MotorKt Register (address = 0x03) [reset = 0x00]
        5. 8.5.3.5  MotorCurrent Register (address = 0x04) [reset = 0x00]
        6. 8.5.3.6  IPDPosition–SupplyVoltage Register (address = 0x05) [reset = 0x00]
        7. 8.5.3.7  SpeedCmd–spdCmdBuffer Register (address = 0x06) [reset = 0x00]
        8. 8.5.3.8  AnalogInLvl Register (address = 0x07) [reset = 0x00]
        9. 8.5.3.9  DeviceID–RevisionID Register (address = 0x08) [reset = 0x00]
        10. 8.5.3.10 DeviceID–RevisionID Register (address = 0x08) [reset = 0x00]
        11. 8.5.3.11 Unused Registers (addresses = 0x011 Through 0x2F)
        12. 8.5.3.12 SpeedCtrl Register (address = 0x30) [reset = 0x00]
        13. 8.5.3.13 EEPROM Programming1 Register (address = 0x31) [reset = 0x00]
        14. 8.5.3.14 EEPROM Programming2 Register (address = 0x32) [reset = 0x00]
        15. 8.5.3.15 EEPROM Programming3 Register (address = 0x33) [reset = 0x00]
        16. 8.5.3.16 EEPROM Programming4 Register (address = 0x34) [reset = 0x00]
        17. 8.5.3.17 EEPROM Programming5 Register (address = 0x35) [reset = 0x00]
        18. 8.5.3.18 EEPROM Programming6 Register (address = 0x36) [reset = 0x00]
        19. 8.5.3.19 Unused Registers (addresses = 0x37 Through 0x5F)
        20. 8.5.3.20 EECTRL Register (address = 0x60) [reset = 0x00]
        21. 8.5.3.21 Unused Registers (addresses = 0x61 Through 0x8F)
        22. 8.5.3.22 CONFIG1 Register (address = 0x90) [reset = 0x00]
        23. 8.5.3.23 CONFIG2 Register (address = 0x91) [reset = 0x00]
        24. 8.5.3.24 CONFIG3 Register (address = 0x92) [reset = 0x00]
        25. 8.5.3.25 CONFIG4 Register (address = 0x93) [reset = 0x00]
        26. 8.5.3.26 CONFIG5 Register (address = 0x94) [reset = 0x00]
        27. 8.5.3.27 CONFIG6 Register (address = 0x95) [reset = 0x00]
        28. 8.5.3.28 CONFIG7 Register (address = 0x96) [reset = 0x00]
  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 Trademarks
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
  13. 13Mechanical, Packaging, and Orderable Information
    1. 13.1 Package Option Addendum
      1. 13.1.1 Packaging Information
      2. 13.1.2 Tape and Reel Information

封装选项

机械数据 (封装 | 引脚)
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订购信息

8.4.1.2 BEMF Constant

The BEMF constant, Kt[6:0] describes the phase-to-phase BEMF voltage of the motor as a function of the motor velocity.

Figure 8-9 shows the measurement technique for this constant as used in the DRV10982-Q1 device.

GUID-E6BD1676-2EA1-48BB-A086-3EF0E5365317-low.gifFigure 8-9 KtPH Definition

With the motor coasting, use an oscilloscope to capture the differential voltage waveform between any two phases. Derive the BEMF constant used by the DRV10982-Q1 device as shown in Equation 1.

Equation 1. KtPH = Ep × te

where

  • Ep is ½ the peak-to-peak amplitude of the measured voltage
  • te is the electrical period

The measured BEMF constant (KtPH) must be converted to a 7-bit digital register value Kt[6:0] (combination of KtShift[2:0] and KtValue[3:0]) to program the BEMF constant value. The digital register value can be determined as follows:

  1. Convert the measured KtPH to a weighted digital value: Ktph_dig = 1090 × KtPH
  2. Encode the digital value such that Ktph_dig = KtValue[3:0] << KtShift[2:0].

The maximum KtPH that can be programmed is 1760 mV/Hz. This represents a digital value of 1920 and an encoded Kt[6:0] value of 0x7Fh. The minimum KtPH that can be programmed is 0.92 mV/Hz, which represents a digital value of 1 and an encoded Kt[6:0] value of 0x01h.

For convenience, the encoded value of Kt[6:0] may also be obtained from Table 8-4.

Table 8-4 BEMF Constant Look-Up Table
Kt[6:0] {KtShift[2:0], KtValue[3:0]}KtPH (mV/Hz)Kt [6:0] {KtShift[2:0], KtValue[3:0]}KtPH (mV/Hz)Kt [6:0] {KtShift[2:0], KtValue[3:0]}KtPH (mV/Hz)
BINARYHEXBINARYHEXBINARYHEX
000 00000x000010 10000x2829.44101 10000x58235.52
000 00010x010.92010 10010x2933.12101 10010x59264.96
000 00100x021.84010 10100x2A36.8101 10100x5A294.4
000 00110x032.76010 10110x2B40.48101 10110x5B323.84
000 01000x043.68010 11000x2C44.16101 11000x5C353.28
000 01010x054.6010 11010x2D47.84101 11010x5D382.72
000 01100x065.52010 11100x2E51.52101 11100x5E412.16
000 01110x076.44010 11110x2F55.2101 11110x5F441.6
000 10000x087.36011 10000x3858.88110 10000x68471.04
000 10010x098.28011 10010x3966.24110 10010x69529.92
000 10100x0A9.2011 10100x3A73.6110 10100x6A588.8
000 10110x0B10.12011 10110x3B80.96110 10110x6B647.68
000 11000x0C11.04011 11000x3C88.32110 11000x6C706.56
000 11010x0D11.96011 11010x3D95.68110 11010x6D765.44
000 11100x0E12.88011 11100x3E103.04110 11100x6E824.32
000 11110x0F13.8011 11110x3F110.4110 11110x6F883.2
001 10000x1814.72100 10000x48117.76111 10000x78942.08
001 10010x1916.56100 10010x49132.48111 10010x791059.84
001 10100x1A18.4100 10100x4A147.2111 10100x7A1177.6
001 10110x1B20.24100 10110x4B161.92111 10110x7B1295.36
001 11000x1C22.08100 11000x4C176.64111 11000x7C1413.12
001 11010x1D23.92100 11010x4D191.36111 11010x7D1530.88
001 11100x1E25.76100 11100x4E206.08111 11100x7E1648.64
001 11110x1F27.6100 11110x4F220.8111 11110x7F1766.4