SLVUCC0A October   2021  – December 2021 TPS2597

 

  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 Setup
      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 Overcurrent Test
    3. 5.3 Output Hot-Short Test
    4. 5.4 Wakeup into Short Test
    5. 5.5 Overvoltage Clamp Test
  7. 6EVAL Board Assembly Drawings and Layout Guidelines
    1. 6.1 PCB Drawings
  8. 7Bill Of Materials (BoM)
  9. 8Revision History

5.2 Overcurrent Test

Use the following instructions to perform the overcurrent test on the circuit breaker variant (TPS25974x) of TPS2597xx eFuse:

  1. Place jumper J16 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 10 A and enable the power supply.
  3. Place jumper J18 in s suitable position to set the required current limit as per Table 4-3.
  4. Apply an overload greater than the set current limit between VOUT and GND (while testing the current limit variant of TPS2597xx, use a resistive load to apply overcurrent). CC load is not recommended for the current limit test.
  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 TPS2597EVM.

GUID-20211027-SS0I-HS54-KM3S-HDVB4HBLXTPD-low.pngFigure 5-3 Overcurrent Response of TPS25974x for 8-A Current Limit Setting