SNVA870A March   2019  – April  2020 LM25143 , LM25143-Q1 , LM5143 , LM5143-Q1 , LM5143A-Q1

 

  1.   LM5143-Q1 4-phase Buck Regulator Design for Automotive ADAS Applications
    1.     Trademarks
    2. 1 High Density Reference Design Description
      1. 1.1 Typical Applications
      2. 1.2 Features and Electrical Performance
    3. 2 Design Specifications
    4. 3 Application Circuit Diagram
    5. 4 Photo
    6. 5 Test Data and Performance Curves
      1. 5.1 Conversion Efficiency
    7. 6 EVM Documentation
      1. 6.1 Schematic
      2. 6.2 Bill of Materials
      3. 6.3 PCB Layout
    8. 7 Device and Documentation Support
      1. 7.1 Device Support
        1. 7.1.1 Development Support
      2. 7.2 Documentation Support
        1. 7.2.1 Related Documentation
          1. 7.2.1.1 PCB Layout Resources
          2. 7.2.1.2 Thermal Design Resources
  2.   Revision History

6.3 PCB Layout

Figure 6 through show the design using a 6-layer PCB with 2-oz copper thickness. The design is essentially a single-sided design except for certain input filtering and small-signal components located on the bottom side.

LM5143-Q1 top_layer_nva870.gifFigure 6. Top Copper (Top View)
LM5143-Q1 layer2_nva870.gifFigure 7. Layer 2 Copper (Top View)
LM5143-Q1 layer3_nva870.gifFigure 8. Layer 3 Copper (Top View)
LM5143-Q1 layer4_nva870.gifFigure 9. Layer 4 Copper (Top View)
LM5143-Q1 layer5_nva870.gifFigure 10. Layer 5 Copper (Top View)
LM5143-Q1 bottom_layer_nva870.gifFigure 11. Bottom Copper (Top View)