SLVUC35A May   2021  – August 2021 TPS25946

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 EVM Applications
  3. 2Description
  4. 3Schematic
  5. 4General 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. 5Test Setup and Procedures
    1. 5.1 Hot Plug Test
    2. 5.2 Startup With a Combination of Capacitive and Resistive Loads
    3. 5.3 Power-Up into Short Test
    4. 5.4 Overvoltage Lockout Test
    5. 5.5 Transient Overload Performance
    6. 5.6 Overcurrent Test
    7. 5.7 Output Hot Short Test
    8. 5.8 USB On-The-Go (OTG) Performance
  7. 6EVAL Board Assembly Drawings and Layout Guidelines
    1. 6.1 PCB Drawings
  8. 7Bill Of Materials (BOM)
  9. 8Revision History

5.5 Transient Overload Performance

Use the following instructions to observe the transient overload performance:

  1. Place jumper J5 to an appropriate position to obtain required blanking period as per Table 4-3.
  2. Place jumper J6 in a suitable position to set required current limit as per Table 4-3.
  3. Set the input supply voltage VIN to 12 V and current limit of 10 A and enable the power supply.
  4. Now apply an overload greater than the set current limit (using the jumper J6) between VOUT and PGND for a time duration less than the blanking period decided by using jumper J5.
  5. Observe the waveforms using an oscilloscope.

Figure 5-8 shows transient overload performance of TPS25946 eFuse on TPS25946EVM eFuse Evaluation Board.

GUID-20210424-CA0I-1RMW-Z4N6-N8CVQDCDG6FH-low.gifFigure 5-8 Transient Overload Performance of TPS25946 eFuse (VIN = 12 V, CITimer = 2.2 nF, Cout = 470 μF, RILM = 549 Ω, IOUT Ramped From 4 A to 8 A Then 4 A Within 1 ms)