SLVUD19B August   2024  – April 2025 TPSI31P1-Q1

 

  1.   1
  2.   Description
  3.   3
  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 Additional Images
    2. 2.2 Header Information
    3. 2.3 Jumper Information
    4. 2.4 Test Points
  9. 3Software
  10. 4Implementation Results
    1. 4.1 Evaluation Setup
    2. 4.2 Performance Data and 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. 7Revision History

4.1 Evaluation Setup

Equation 1 shows how to select a shunt resistor based on the desired charging current. A 125mΩ shunt resistor targets 5.5AAVG charging current. A 150mΩ shunt resistor targets 4.5AAVG charging current. The charging current behavior is shown in Figure 4-1.

Equation 1. IPEAK=1.2 VRSHUNTIMIN=0.160 VRSHUNTIAVG=IPEAK + IMIN2
TPSI31PXQ1EVM Active Precharge ProfileFigure 4-1 Active Precharge Profile