TIDUFK3 September   2026

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6. 1System Description
    1. 1.1 Terminology
    2. 1.2 Key System Specifications
  7. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 Part Selection
      2. 2.2.2 Flexible Platform Approach
    3. 2.3 Highlighted Products
      1. 2.3.1  TPS7H6101-SEP
      2. 2.3.2  F28377D-SEP
      3. 2.3.3  INA901-SP
      4. 2.3.4  TMP9R00-SP
      5. 2.3.5  TPS7H502x-SP/SEP
      6. 2.3.6  TL1431-SP
      7. 2.3.7  TPS7H1121-SP and TPS7H1121-SEP
      8. 2.3.8  TPS7A4501-SP
      9. 2.3.9  SN54SLC8T245-SEP
      10. 2.3.10 INA240A1
  8. 3System Design Theory
    1. 3.1 Power Stage Design
    2. 3.2 Current Sense
    3. 3.3 Temperature Monitoring
    4. 3.4 PCB Layer Stack
    5. 3.5 Optimizations or Trade-offs
      1. 3.5.1 Board Area Savings and Component Count Reduction
      2. 3.5.2 Signal Ringing / EMI Reduction
      3. 3.5.3 Heat Dissipation
      4. 3.5.4 Cost
  9. 4Hardware, Software, Testing Requirements, and Test Results
    1. 4.1 Hardware Requirements
    2. 4.2 Software
      1. 4.2.1 Running the Matlab Simulink Model
      2. 4.2.2 Software Adaptations
    3. 4.3 Test Setup
    4. 4.4 Connecting the F28379D Launchpad
    5. 4.5 Test Results
      1. 4.5.1 Dead Times
      2. 4.5.2 Ringing on Switch Node
      3. 4.5.3 Thermal Images
  10. 5Design and Documentation Support
    1. 5.1 Design Files
      1. 5.1.1 Schematics
      2. 5.1.2 BOM
      3. 5.1.3 PCB Layout Recommendations
        1. 5.1.3.1 Layout Prints
    2. 5.2 Tools and Software
      1. 5.2.1 Tools
      2. 5.2.2 Software
    3. 5.3 Documentation Support
    4. 5.4 Support Resources
    5.     Trademarks
  11. 6About the Author

2.3.10 INA240A1

The in-phase current sensing circuitry based on the commercial-grade INA240A1 is carried forward from BOOSTXL-3PHGANINV to keep the space-grade power stage as close as possible to the parenting design configuration for easy board bring-up with minimal software changes.

Alternative space-grade in-phase current sensing designs from TI are available based on INA951-SEP or INA901-SP with a constant current source added to enable for bi-directional current sensing (Bidirectional Topologies for the INA901-SP), OPA4H199-SEP/-SP for up-to 40V common mode input voltage, or INA1H94-SEP/-SP combined with OPA4H199-SEP/-SP or OPA4H014-SEP for common mode input voltages from -150V to +150V.