SLVUCE5A April   2022  – June 2022

 

  1.   TPS25981EVM: Evaluation Module for TPS25981 eFuse
  2.   Trademarks
  3. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 EVM Applications
  4. 2Description
  5. 3Schematic
  6. 4General Configurations
    1. 4.1 Physical Access
    2. 4.2 Test Equipment and Setup
      1. 4.2.1 Power Supplies
      2. 4.2.2 Meters
      3. 4.2.3 Oscilloscope
      4. 4.2.4 Loads
  7. 5Test Setup and Procedures
    1. 5.1 Hot-Plug Test
    2. 5.2 Overcurrent Test
    3. 5.3 Output Hot-Short Test
    4. 5.4 Wakeup into Short Test
    5. 5.5 Overvoltage Test
  8. 6EVAL Board Assembly Drawings and Layout Guidelines
    1. 6.1 PCB Drawings
  9. 7Bill Of Materials (BoM)
  10. 8Revision History

5.5 Overvoltage Test

Use the following instructions to perform the overvoltage protection test on channel 1:

  1. Remove the input TVS diodes.

  2. Place jumper J1 in a suitable position to set the required OVLO threshold as per Table 4-3. For example, consider setting 5-6 to set threshold as 13.76 V.

  3. Set the input supply voltage VIN to 12 V and current limit of 12 A. Apply the supply between VIN1 and PGND1 at connector J9 and enable the power supply.
  4. Increase the input supply VIN from 12 V to 16 V and observe the waveforms using an oscilloscope.

Figure 5-6 shows overvoltage response of TPS259814 on the TPS25981EVM eFuse evaluation board.

GUID-20220327-SS0I-GWXS-GH88-TBQXR0ZMB03B-low.pngFigure 5-6 Overvoltage Protection Response of the TPS259814 Device