SLVSFZ8A November   2021  – January 2026 DRV8231A

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 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. 6.7 Timing Diagrams
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 External Components
    4. 7.4 Feature Description
      1. 7.4.1 Bridge Control
      2. 7.4.2 Current Sense and Regulation (IPROPI)
        1. 7.4.2.1 Current Sensing
        2. 7.4.2.2 Current Regulation
      3. 7.4.3 Protection Circuits
        1. 7.4.3.1 Overcurrent Protection (OCP)
        2. 7.4.3.2 Thermal Shutdown (TSD)
        3. 7.4.3.3 VM Undervoltage Lockout (UVLO)
    5. 7.5 Device Functional Modes
      1. 7.5.1 Active Mode
      2. 7.5.2 Low-Power Sleep Mode
      3. 7.5.3 Fault Mode
    6. 7.6 Pin Diagrams
      1. 7.6.1 Logic-Level Inputs
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Brush DC Motor
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Motor Voltage
          2. 8.2.1.2.2 Motor Current
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Stall Detection
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Stall Detection Timing
          2. 8.2.2.2.2 Stall Threshold Selection
        3. 8.2.2.3 Application Curves
      3. 8.2.3 Relay Driving
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
          1. 8.2.3.2.1 Control Interface for Single-Coil Relays
          2. 8.2.3.2.2 Control Interface for Dual-Coil Relays
        3. 8.2.3.3 Application Curves
      4. 8.2.4 Multi-Sourcing with Standard Motor Driver Pinout
    3. 8.3 Current Capability and Thermal Performance
      1. 8.3.1 Power Dissipation and Output Current Capability
      2. 8.3.2 Thermal Performance
        1. 8.3.2.1 Steady-State Thermal Performance
        2. 8.3.2.2 Transient Thermal Performance
    4. 8.4 Power Supply Recommendations
      1. 8.4.1 Bulk Capacitance
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Community Resources
    4. 9.4 Trademarks
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

8.2.3.3 Application Curves

DRV8231A PWM driving for a single-coil latching relay with driving profile FORWARD → COAST → REVERSE → COAST
A.
Ch 1 = IN1 Ch 2 = IN2 Ch 3 = VOUT1
Ch 4 = VOUT2 Ch 6 = Relay Switch Ch 7 = Relay Coil Current
Figure 8-13 PWM driving for a single-coil latching relay with driving profile FORWARD → COAST → REVERSE → COAST
DRV8231A PWM driving for dual-coil relay
A.
Ch 1 = IN1 Ch 2 = IN2 Ch 3 = VOUT1
Ch 4 = VOUT2 Ch 6 = Relay Switch Ch 7 = Relay Coil1 Current
Ch 8 = Relay Coil2 Current
Figure 8-15 PWM driving for dual-coil relay
DRV8231A PWM driving for a single-coil latching relay with driving profile FORWARD → BRAKE → REVERSE → BRAKE
A.
Ch 1 = IN1 Ch 2 = IN2 Ch 3 = VOUT1
Ch 4 = VOUT2 Ch 6 = Relay Switch Ch 7 = Relay Coil Current
Figure 8-14 PWM driving for a single-coil latching relay with driving profile FORWARD → BRAKE → REVERSE → BRAKE