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

3 Software

TPSI31P1-CALC is a calculator tool helpful for estimating precharge circuit behavior, which is available within the device product folder. The tool allows users to input common precharge requirements such as voltage, capacitance, inductance, and more, to generate output waveforms of the link voltage and inductor current. This software also accounts for user inputs that exceed the TPSI31P1-Q1 power transfer capabilities and accordingly estimates delay resulting from VDDH needing to recover from UVLO. To minimize or remove this delay, the user can choose to add the TPSI3052-Q1 to provide an additional 79mW of switching power by connecting J8.

TPSI31PXQ1EVM TPSI31P1 Device Calculator Example 1, VDDH Not Hitting UVLO Figure 3-1 TPSI31P1 Device Calculator Example 1, VDDH Not Hitting UVLO
A. To help clearly illustrate current charging behavior in the blue waveform, Example 1 depicts a 20V input. Note that the input is not limited to 20V.
TPSI31PXQ1EVM TPSI31P1 Device Calculator Example 2, VDDH Hitting UVLO Figure 3-2 TPSI31P1 Device Calculator Example 2, VDDH Hitting UVLO
B. To help clearly illustrate current charging behavior in the blue waveform, Example 2 depicts a 20V input. Note that the input is not limited to 20V.