SLAS955A March   2013  – July 2015 DRV10963

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Speed Input and Control
      2. 7.3.2  Spin up Settings
      3. 7.3.3  Motor Direction Change
      4. 7.3.4  Motor Frequency Feedback (FG)
      5. 7.3.5  Lock Detection
        1. 7.3.5.1 Lock1: Frequency Overflow
        2. 7.3.5.2 Lock2: BEMF Abnormal
        3. 7.3.5.3 Lock3: Speed Abnormal
        4. 7.3.5.4 Open Loop Stuck
      6. 7.3.6  Soft Current Limit
      7. 7.3.7  Short Circuit Current Protection
      8. 7.3.8  Anti-Voltage Surge (AVS)
        1. 7.3.8.1 Protecting Against the Return of Mechanical Energy
        2. 7.3.8.2 Protecting Against the Return of Inductive Energy
      9. 7.3.9  Control Advance Angle
      10. 7.3.10 Overtemperature Protection
      11. 7.3.11 Undervoltage Protection
      12. 7.3.12 OTP Configuration
    4. 7.4 Device Functional Modes
      1. 7.4.1 Standby Mode and Sleep Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Community Resources
    2. 11.2 Trademarks
    3. 11.3 Electrostatic Discharge Caution
    4. 11.4 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

8 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.

8.1 Application Information

DRV10963 is used in sensorless 3-phase BLDC motor control. The driver provides a high performance, high reliability, flexible and simple solution for compute fan applications. The following design shows a common application of the DRV10963.

8.2 Typical Application

DRV10963 typ_app_cir_las955.gifFigure 17. Typical Application Schematic

8.2.1 Design Requirements

Table 11 lists several key motor characteristics and recommended ranges which the DRV10963 is capable of driving. However, that does not necessarily mean motors outside these boundaries cannot be driven by DRV10963.

Recommended ranges listed in Table 11 can serve as a general guideline to quickly decide whether DRV10963 is a good fit for an application. Motor performance is not ensured for all uses.

Table 11. Key Motor Characteristics and Recommended Ranges

Rm (Ω) Lm (µH) Kt (mV/Hz) fFG_max (Hz)
Recommended Value 2.5 ~ 36 50 ~ 10000 1 ~ 100 1300

Rm - Motor phase resistance between phase to phase;

Lm - Motor phase to phase inductance between phase to phase;

Kt - Motor BEMF constant from phase to center tape;

fFG_max - Maximum electrical frequency. Maximum motor speed can be calculated from:

  • If FGS = 1, RPM = (fFG_max × 60)/ number of pole pairs
  • If FGS = 0, RPM = (fFG_max × 120)/ number of pole pairs

8.2.2 Detailed Design Procedure

1. Refer to Design Requirements and make sure your system meets the recommended application range.

2. Refer to the DRV10963 Tuning Guide and measure the motor parameters.

3. Refer to the DRV10963 Tuning Guide. Configure the parameters using DRV10963 GUI, and optimize the motor operation. The Tuning Guide takes the user through all the configurations step by step, including: start-up operation, closed-loop operation, current control, initial positioning, lock detection, and anti-voltage surge.

4. Build your hardware based on Layout Guidelines.

5. Connect the device into system and validate your system solution

8.2.3 Application Curves

DRV10963 ref_PCB_sinusoidal_current_profile_slas955.png
Figure 18. Reference PCB Sinusoidal Current Profile
DRV10963 ref_PCB_open_loop_and_close_loop_slas955.png
Figure 20. Reference PCB Open Loop and Close Loop
DRV10963 ref_PCB_start_up_align_acceleration_slas955.png
NOTE: FG_OUT Signal Being Held HIGH During Locked Rotor Condition (Stall)
Figure 19. Reference PCB Start-Up (Align-Acceleration) Profile
DRV10963 ref_PCB_closed_loop_slas955.png
Figure 21. Reference PCB Closed Loop