SBAU489 June   2025 AMC23C15 , AMC3302

 

  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

3.2.1 Shunt Selection Calculations

Consider desired input range and power dissipated when selecting a shunt resistor for high current applications.

The following equation calculates the ideal shunt resistance:

Equation 9. .    RSHUNT=VI=50mV(Input Range of AMC3302)50A(Current Range)=1mΩ

The following equation calculates the amount of power dissipated.

Equation 10. .    P=I2R=50A2×1mΩ=2.5W

Make sure power dissipated is ⅔ of the shunt resistor power rating for heat dissipation at high currents. See the Shunt Resistor Selection for Isolated Data Converters application note for more information.