SLVSHE3A June   2024  – July 2025 DRV2911-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings Auto
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Output Stage
      2. 6.3.2 Hardware Interface
      3. 6.3.3 AVDD Linear Voltage Regulator
      4. 6.3.4 Step-Down Mixed-Mode Buck Regulator
        1. 6.3.4.1 Buck in Inductor Mode
        2. 6.3.4.2 Buck in Resistor mode
        3. 6.3.4.3 Buck Regulator with External LDO
        4. 6.3.4.4 AVDD Power Sequencing with Buck Regulator
        5. 6.3.4.5 Mixed mode Buck Operation and Control
        6. 6.3.4.6 Buck Undervoltage Lockout
        7. 6.3.4.7 Buck Overcurrent Protection
      5. 6.3.5 Charge Pump
      6. 6.3.6 Slew Rate Control
      7. 6.3.7 Cross Conduction (Dead Time)
      8. 6.3.8 Propagation Delay
      9. 6.3.9 Protections
        1. 6.3.9.1 PVDD Supply Undervoltage Lockout
        2. 6.3.9.2 AVDD Undervoltage Lockout
        3. 6.3.9.3 VCP Charge Pump Undervoltage Lockout
        4. 6.3.9.4 Overcurrent Latched Protection
        5. 6.3.9.5 Thermal Shutdown (OTSD)
          1. 6.3.9.5.1 OTSD FET
          2. 6.3.9.5.2 OTSD (Non-FET)
    4. 6.4 Device Functional Modes
      1. 6.4.1 Functional Modes
        1. 6.4.1.1 Reset Mode
        2. 6.4.1.2 Operating Mode
        3. 6.4.1.3 Fault Reset (RESETZ Pulse)
      2. 6.4.2 OUTOFF functionality
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Design Procedure
      2. 7.2.2 Voltage and Current Sense Circuitry
    3. 7.3 Power Supply Recommendations
      1. 7.3.1 Bulk Capacitance
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
      3. 7.4.3 Thermal Considerations
        1. 7.4.3.1 Power Dissipation
  9. 8 Device and Documentation Support
    1. 8.1 Third-Party Products Disclaimer
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

6.3 Feature Description

Table 6-1 lists the recommended values of the external components for the driver.

Table 6-1 DRV2911-Q1 External Components
COMPONENTSPIN 1PIN 2RECOMMENDED
CPVDD1PVDDPGNDX5R or X7R, 0.1-µF, TI recommends a capacitor voltage rating at least twice the normal operating voltage of the device
CPVDD2PVDDPGND≥ 10-µF, TI recommends a capacitor voltage rating at least twice the normal operating voltage of the device
CCPCPPVDDX5R or X7R, 16-V, 1-µF
CFLYCPHCPLX5R or X7R, 47-nF, TI recommends a capacitor voltage rating at least twice the normal operating voltage
CAVDDAVDDAGNDX5R or X7R, 1-µF, ≥ 6.3-V. In order for AVDD to accurately regulate output voltage, capacitor should have effective capacitance between 0.7-µF to 1.3-µF at 3.3-V across operating temperature.
CVREFVREFAGNDX5R or X7R, 0.1-μF, 6.3-V capacitor
RFAULTZAVDDFAULTZ5.1-kΩ, Pullup resistor
RBIASRBIASAVDD47 kΩ, bias resistor
RSLEWSLEWAGND or AVDDSlew rate hardware interface
ROCPOCPAGNDOCP hardware interface
Note: TI recommends connecting the pull-up on FAULTZ even if it is not used to avoid undesirable entry into internal test mode. If an external supply is used to pull up FAULTZ, ensure that it is pulled to >2.2V on power up or the device will enter internal test mode.