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

5.2 Overcurrent Test

Use the following instructions to perform the overcurrent test on the circuit breaker TPS259814 eFuse:

  1. Place jumper J10 to the appropriate position to obtain required blanking period as per Table 4-3.
  2. Set the input supply voltage VIN to 12 V and current limit of 12 A and enable the power supply.
  3. Place jumper J12 in suitable position to set the required current limit as per Table 4-3.
  4. Apply an overload greater than the set current limit between VOUT1 and GND.
  5. The device allows the overload current for the programmed ITIMER period and then switches OFF.

Figure 5-3 shows an example of the circuit breaker test on the TPS25981EVM.

GUID-20220327-SS0I-SQMM-B5MN-PFSNNHDCCC80-low.pngFigure 5-3 Overcurrent Response of TPS259814 for 10-A Current Limit Setting