SBAU489 June   2025

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Hardware Overview
    2. 2.2 Assembly Instructions
    3. 2.3 Interfaces
      1. 2.3.1 Analog Input
      2. 2.3.2 Digital Interface
    4. 2.4 Power Requirements
      1. 2.4.1 AVDD Input
      2. 2.4.2 DVDD Input
    5. 2.5 Test Points
    6. 2.6 Lug Information
    7. 2.7 Best Design Practices
  9. 3Implementation Results
    1. 3.1 Evaluation Procedure
      1. 3.1.1 Equipment Setup
      2. 3.1.2 Test Procedure
      3. 3.1.3 Full Signal Chain Evaluation Procedure
    2. 3.2 Performance Data and Results
      1. 3.2.1 Shunt Selection Calculations
      2. 3.2.2 Filter Selection
      3. 3.2.3 Thermal Results
  10. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  11. 5Additional Information
    1. 5.1 Trademarks
  12. 6Related Documentation

3.2.3 Thermal Results

The AMC-MOD-50A-EVM is rated for ±50A peak current and ±35A RMS. The temperature rating of the FR4-based PCB used is 180°C. Figure 3-7 and Figure 3-8 demonstrate EVM thermal performance at 35A and 50A, respectively. As demonstrated in Figure 3-9, if a system requires lower temperatures, consider adding forced air cooling. As demonstrated in Figure 3-10, if lower temperatures are required, consider a larger shunt size for greater heat dissipation. Thermal performance additionally depends on final system design and environment.

Results are captured at 25°C ambient temperature and after applying the specified current for two minutes.

AMC-MOD-50A-EVM Typical Thermal Results: AMC-MOD-50A-EVM at 35AFigure 3-7 Typical Thermal Results: AMC-MOD-50A-EVM at 35A
AMC-MOD-50A-EVM Worst-Case Thermal Results With Forced Air Cooling: AMC-MOD-50A-EVM at 50AFigure 3-9 Worst-Case Thermal Results With Forced Air Cooling: AMC-MOD-50A-EVM at 50A
AMC-MOD-50A-EVM Worst-Case Thermal Results: AMC-MOD-50A-EVM at 50AFigure 3-8 Worst-Case Thermal Results: AMC-MOD-50A-EVM at 50A
AMC-MOD-50A-EVM Worst-Case Thermal Results With Larger Shunt Resistor Package (Size 2725): AMC-MOD-50A-EVM at 50AFigure 3-10 Worst-Case Thermal Results With Larger Shunt Resistor Package (Size 2725): AMC-MOD-50A-EVM at 50A