SLVUCW7A September   2024  – April 2025 TPS1685

 

  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
        1. 2.1.2.1 Power Supplies
        2. 2.1.2.2 Meters
        3. 2.1.2.3 Oscilloscope
        4. 2.1.2.4 Loads
  8. 3Implementation Results
    1. 3.1 Test Setup and Procedures
      1. 3.1.1  Hot Plug
      2. 3.1.2  Start-up with Enable
      3. 3.1.3  Power Up Into Short
      4. 3.1.4  Undervoltage Lockout
      5. 3.1.5  Overvoltage Lockout
      6. 3.1.6  Transient Overload Performance
      7. 3.1.7  Overcurrent Event
      8. 3.1.8  Output Hot Short
      9. 3.1.9  Quick Output Discharge (QOD)
      10. 3.1.10 Thermal Performance of TPS1685EVM
  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

3.1.3 Power Up Into Short

Use the following instructions to perform the power-up into short test:

  1. Set the input supply voltage VIN to 54V and current limit to 5A. Keep the power supply OFF. Connect the supply between VIN (connector T1) and PGND (connector T3).

  2. Short the output of the EVM to ground. For example, VOUT (connector T2) to PGND (connector T3) through a cable.

  3. Keep the eFuses disabled by pressing the switch SW1.
  4. Turn ON the power supply.
  5. Enable the TPS1685 eFuse by releasing the switch SW1.

The test waveforms of power up into output short on the TPS1685EVM with two devices in parallel are shown in Figure 3-4.

TPS1685EVM Power Up Into Output Short Response of TPS1685EVM (VIN = 54V, EN Stepped Up From 0V to 2V, and OUT Shorted to PGND)Figure 3-4 Power Up Into Output Short Response of TPS1685EVM (VIN = 54V, EN Stepped Up From 0V to 2V, and OUT Shorted to PGND)