SLUUCB4 June   2020 TPS25980

 

  1.   TPS25980EVM: Evaluation Module for TPS25980x efuse
    1.     Trademarks
    2. 1 Introduction
      1. 1.1 EVM Features
      2. 1.2 EVM Applications
    3. 2 Description
    4. 3 Schematic
    5. 4 General Configurations
      1. 4.1 Physical Access
      2. 4.2 Test Equipment and Set up
        1. 4.2.1 POWER SUPPLIES
        2. 4.2.2 METERS
        3. 4.2.3 OSCILLOSCOPE
        4. 4.2.4 LOADS
    6. 5 Test Setup and Procedures
      1. 5.1 Hot-Plug Test
      2. 5.2 Current Limit Test
      3. 5.3 Output Hot-Short Test
      4. 5.4 Wakeup into Short Test
      5. 5.5 Overvoltage Cut-off Test
    7. 6 EVAL Board Assembly Drawings and Layout Guidelines
      1. 6.1 PCB Drawings
    8. 7 Bill Of Materials (BoM)

5.5 Overvoltage Cut-off Test

Use the following instructions to perform overvoltage protection test:

  1. Remove input TVS diodes.
  2. Set the input supply voltage VIN to 12 V and current limit of 5 A. Apply the supply between input connectors J1 and J3 and enable the power supply.
  3. Set the load resistance to 24 Ω and connect between VOUT and GND.
  4. Increase the input supply VIN from 12 V to 18 V and observe the waveforms using an oscilloscope.

Figure 7 shows over voltage response of TPS259804O on TPS25980EVM eFuse Evaluation Board.

TPS25980 OVP-recovery.gifFigure 7. Over Voltage Protection Response of TPS259804O Device