SLVUDB5A June   2025  – November 2025

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 General Configurations
      1. 2.1.1 Physical Access
      2. 2.1.2 Test Equipment and Setup
  8. 3Implementation Results
    1. 3.1 Test Setup and Procedures
      1. 3.1.1 Supply Ramped From 0V to 54V — Start-up
      2. 3.1.2 Power Up Into Short
      3. 3.1.3 Undervoltage Lockout
      4. 3.1.4 Overvoltage Lockout
      5. 3.1.5 Overcurrent Event
      6. 3.1.6 Output Hot Short
  9. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Drawings
    3. 4.3 Bill of Materials (BOM)
  10. 5Additional Information
    1. 5.1 Trademarks
  11. 6Revision History

3.1.4 Overvoltage Lockout

Use the following instructions to perform the overvoltage protection test:

  1. Set the input supply voltage VIN to 54V and current limit to 10A. Apply the supply between VIN2 (connector J13) and PGND (connector J11) and enable the power supply.
  2. Apply a load of 5A between VOUT2 (connector J14) and PGND (connector J12).
  3. Increase the input supply VIN2 from 54V to 65V. Observe the waveforms using an oscilloscope.
TPS1686-87EVM Overvoltage Lockout Response of TPS1686 eFuse
VIN ramped up from 54V to 65V, VIN(OVP) = 60V, COUT = 100uF, and ILOAD = 5A
Figure 3-5 Overvoltage Lockout Response of TPS1686 eFuse