TIDUFH6 May   2026

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 48V Smart Actuator Architectures
        1. 2.2.1.1 48V Distribution Architecture
        2. 2.2.1.2 48V and 12V Distribution Architecture
        3. 2.2.1.3 48V and 12V Supplies Architecture
        4. 2.2.1.4 Reference Design Architecture
      2. 2.2.2 Low Power Sleep Mode Architecture
      3. 2.2.3 Bulk Capacitance Estimation
      4. 2.2.4 EMI PI Filter
      5. 2.2.5 Reverse Polarity Protection
      6. 2.2.6 LIN Bus Fault Voltage for 48V Architecture
    3. 2.3 Highlighted Products
      1. 2.3.1 TLIN4029A-Q1
      2. 2.3.2 MSPM0G3507-Q1
      3. 2.3.3 DRV8363-Q1
      4. 2.3.4 LM5168P-Q1
      5. 2.3.5 TPS7B81-Q1
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
      1. 3.1.1 Reference Design Hardware and Programming Setup
    2. 3.2 Software
    3. 3.3 Test Setup
    4. 3.4 Test Results
      1. 3.4.1 LIN Remote Wake-Up Timing Analysis
        1. 3.4.1.1 Test Setup
        2. 3.4.1.2 Test Results
      2. 3.4.2 System Sleep Current Analysis
        1. 3.4.2.1 Test Setup
        2. 3.4.2.2 Test Results
      3. 3.4.3 DC Link Voltage Ripple
        1. 3.4.3.1 Test Setup
        2. 3.4.3.2 Test Results
      4. 3.4.4 Thermal Images
  10. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
      3. 4.1.3 PCB Layout Recommendations
        1. 4.1.3.1 Layout Prints
        2. 4.1.3.2 Gerber Files
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5.     Trademarks
  11. 5About the Author

2.2.1.4 Reference Design Architecture

For this reference design, the 48V distribution architecture is selected, as the approach represents the current market trend and delivers the most cost-efficient approach. This architecture balances system complexity, component count, and reliability while meeting performance requirements. The simplified wiring scheme reduces vehicle weight and manufacturing costs, while the integrated DC-DC converter in each smart actuator provides the necessary voltage conversion locally, improving overall system efficiency and reducing electromagnetic interference.