SBAU473A January   2025  – February 2025 AMC1200 , AMC1200-Q1 , AMC1202 , AMC1300 , AMC1300B-Q1 , AMC1301 , AMC1301-Q1 , AMC1302 , AMC1302-Q1 , AMC1400 , AMC1400-Q1 , AMC21C12 , AMC22C11 , AMC22C11-Q1 , AMC22C12 , AMC22C12-Q1 , AMC23C10 , AMC23C11 , AMC23C12 , AMC23C12-Q1 , AMC23C14 , AMC23C15 , AMC23C15-Q1 , AMC3301 , AMC3301-Q1 , AMC3302 , AMC3302-Q1

 

  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 Isolated Amplifier (AMC3302) Analog Output
      3. 2.3.3 Isolated Comparator (AMC23C15) Analog Output
    4. 2.4 Power Requirements
      1. 2.4.1 VDD2 Input
    5. 2.5 Test Points
    6. 2.6 Lug Information
  9. 3What to Do and What Not to Do
  10. 4Implementation Results
    1. 4.1 Evaluation Procedure
      1. 4.1.1 Equipment Setup
      2. 4.1.2 Test Procedure
      3. 4.1.3 Full Signal Chain Evaluation Procedure
    2. 4.2 Performance Data and Results
      1. 4.2.1 Shunt Selection Calculations
      2. 4.2.2 Filter Selection
      3. 4.2.3 Thermal Results
  11. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  12. 6Additional Information
    1. 6.1 Trademarks
  13. 7Compliance Information
    1. 7.1 Compliance and Certifications
  14. 8Related Documentation
  15. 9Revision History

4.2.1 Shunt Selection Calculations

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

  • Resistance Calculation:
    .    RSHUNT=VI=50mV(Input Range of AMC3302)50A(Current Range)=1mΩ
  • Power Dissipated:
    .    P=I2R=50A2×1mΩ=2.5W

Power dissipated must be 2/3 of the shunt resistor power rating for heat dissipation at high currents. See application note,Shunt Resistor Selection for Isolated Data Converters, for more information.