SLUUCW7 july   2023 TPS25983

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 Test Points and Connectors
    2. 2.2 Test Equipment and Set Up
      1. 2.2.1 Power Supplies
      2. 2.2.2 Meters
      3. 2.2.3 Oscilloscope
      4. 2.2.4 Loads
    3. 2.3 Test Setup and Procedures
      1. 2.3.1 Hot-Plug Test
      2. 2.3.2 Current Limit Test
      3. 2.3.3 Output Hot-Short Test
      4. 2.3.4 Wakeup into Short Test
      5. 2.3.5 Overvoltage Cut-off Test
  8. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layouts
    3. 3.3 Bill Of Materials (BOM)
  9. 4Additional Information
    1.     Trademarks

2.3.2 Current Limit Test

Use the following instructions to perform current limit test.

  1. Place jumper J9 in 3-4 Position to set 2 ms for ITIMER.
  2. Set the input supply voltage VIN to 12 V and current limit of 25 A and enable the power supply.
  3. Place jumper J10 in 7-8 Position to set 18 A current limit.
  4. Set the electronic load to 17 A and connect between VOUT and GND. Enable the electronic load.
  5. Now apply overload of 7 A (using resistive load of 1.66 Ohm) between VOUT and GND.
  6. The device allows the overload current for the programmed ITIMER period for example, 2 ms and then switches OFF.
  7. Place jumper J10 at other settings to test at various current limits.

Figure 3-3 shows an example of current limit at 18 A on the TPS25983EVM eFuse Evaluation Board.

GUID-20230725-SS0I-RBC2-ZCPV-XX9SRVLLKKQZ-low.svg Figure 2-3 Over Current Response of TPS25983 for 18 A Current Limit Setting