SLRS073A May   2017  – May 2018 TPL7407LA

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simple Application Schematic
  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 Switching Characteristics
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Inductive Load Drive
      2. 7.4.2 Resistive Load Drive
      3. 7.4.3 ON State Input Current
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Unipolar Stepper Motor Driver
      2. 8.1.2 Multi-Purpose Sink Driver
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 TTL and other Logic Inputs
        2. 8.2.2.2 Input RC Snubber
        3. 8.2.2.3 High-Impedance Input Drivers
        4. 8.2.2.4 Drive Current
        5. 8.2.2.5 Output Low Voltage
      3. 8.2.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
      1. 10.3.1 Improving Package Thermal Performance
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

8.1.1 Unipolar Stepper Motor Driver

TPL7407LA motor_driving_SLRS073.gifFigure 7. Stepper Motor Driver Schematic

Figure 7 shows an implementation of the TPL7407LA for driving a uniploar stepper motor. The unconnected input channels can be used for other functions. When an input pin is left open the internal 1-MΩ pull down resistor pulls the respective input pin to GND potential. For higher noise immunity use an external short across an unconnected input and GND pins. The COM pin must be tied to the supply of whichever inductive load is being driven for the driver to be protected by the free-wheeling diode.

For more information on this application, see the Stepper Motor Driving With Peripheral Drivers (Driver ICs) application report.