SLVSHH3A March   2025  – August 2025 DRV8263-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
    1. 5.1 HW Variant
    2. 5.2 SPI Variant
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Electrical Characteristics
    5. 6.5 Timing Requirements
    6. 6.6 Timing Diagrams
    7. 6.7 Thermal Information
      1. 6.7.1 Transient Thermal Impedance & Current Capability
    8. 6.8 Switching Waveforms
      1. 6.8.1 Output switching transients
        1. 6.8.1.1 High-Side Recirculation
      2. 6.8.2 Wake-up Transients
        1. 6.8.2.1 HW Variant
        2. 6.8.2.2 SPI Variant
      3. 6.8.3 Fault Reaction Transients
        1. 6.8.3.1 Retry setting
        2. 6.8.3.2 Latch setting
    9. 6.9 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 External Components
        1. 7.3.1.1 HW Variant
        2. 7.3.1.2 SPI Variant
      2. 7.3.2 Bridge Control
        1. 7.3.2.1 PH/EN mode
        2. 7.3.2.2 PWM mode
        3. 7.3.2.3 Independent mode
        4. 7.3.2.4 Register - Pin Control - SPI Variant Only
      3. 7.3.3 Device Configuration
        1. 7.3.3.1 Slew Rate (SR)
        2. 7.3.3.2 IPROPI
        3. 7.3.3.3 ITRIP Regulation
        4. 7.3.3.4 DIAG
          1. 7.3.3.4.1 HW variant
          2. 7.3.3.4.2 SPI variant
      4. 7.3.4 Protection and Diagnostics
        1. 7.3.4.1  Over Current Protection (OCP)
        2. 7.3.4.2  Over Temperature Warning (OTW) - SPI Variant Only
        3. 7.3.4.3  Over Temperature Protection (TSD)
        4. 7.3.4.4  Off-State Diagnostics (OLP)
        5. 7.3.4.5  On-State Diagnostics (OLA) - SPI Variant Only
        6. 7.3.4.6  VM Over Voltage Monitor - SPI Variant Only
        7. 7.3.4.7  VM Under Voltage Monitor
        8. 7.3.4.8  Power On Reset (POR)
        9. 7.3.4.9  Powered off Braking (POB)
        10. 7.3.4.10 Event Priority
      5. 7.3.5 Device Functional Modes
        1. 7.3.5.1 SLEEP State
        2. 7.3.5.2 STANDBY State
        3. 7.3.5.3 Wake-up to STANDBY State
        4. 7.3.5.4 ACTIVE State
        5. 7.3.5.5 nSLEEP Reset Pulse (HW Variant, LATCHED setting Only)
      6. 7.3.6 Programming - SPI Variant Only
        1. 7.3.6.1 Serial Peripheral Interface (SPI)
        2. 7.3.6.2 Standard Frame
        3. 7.3.6.3 SPI for Multiple Peripherals
          1. 7.3.6.3.1 Daisy Chain Frame for Multiple Peripherals
      7. 7.3.7 Register Map - SPI Variant Only
        1. 7.3.7.1 User Registers
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Load Summary
    2. 8.2 Typical Application
      1. 8.2.1 HW Variant
      2. 8.2.2 SPI Variant
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 Bulk Capacitance Sizing
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

8.3.1 Bulk Capacitance Sizing

Bulk capacitance sizing is an important factor in motor drive system design. Having more bulk capacitance is benificial, while the disadvantages are increased cost and physical size.

The amount of local capacitance needed depends on a variety of factors including:

  • The highest current required by the motor system.
  • The capacitance of the power supply and the ability of the power supply to source current.
  • The amount of parasitic inductance between the power supply and motor system.
  • The acceptable voltage ripple.
  • The type of motor used (brushed DC, brushless DC, and stepper).
  • The motor braking method.

The inductance between the power supply and motor drive system limits the rate that current can change from the power supply. If the local bulk capacitance is too small, the system responds to excessive current demands or dumps from the motor with a change in voltage. When sufficient bulk capacitance is used, the motor voltage remains stable, and high current can be quickly supplied.

The data sheet provides a recommended value, but system-level testing is required to determine the appropriate sized bulk capacitor.

DRV8263-Q1 Example Setup of Motor Drive System With External Power SupplyFigure 8-6 Example Setup of Motor Drive System With External Power Supply

The voltage rating for bulk capacitors is higher than the operating voltage to provide a margin for cases when the motor transfers energy to the supply.