SLVUCH1A June   2022  – December 2022 TPS1641

 

  1.   TPS1641EVM: Evaluation Module for eFuse TPS1641
  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 Power Limit Test
    3. 5.3 Current Limit Test
    4. 5.4 Overvoltage Protection Test
    5. 5.5 Output Hot-Short Test
    6. 5.6 IN to OUT Short Detection Test
  8. 6EVAL Board Assembly Drawings
    1. 6.1 PCB Drawings
  9. 7Bill of Materials (BOM)
  10. 8Revision History

5.4 Overvoltage Protection Test

Use the following instructions to verify overvoltage response of TPS16412 on CH2:

  1. Make J10 OPEN.

  2. Short Q1 with a cable to bypass the external PFET.
  3. Set the input supply voltage VIN to 24 V and current limit of 2 A. Apply the supply at input terminal T3 and enable the power supply.
  4. Increase the input supply VIN from 24 V to 40 V and observe the response as shown in Figure 5-5.
  5. Now, disable the supply.
  6. Remove the short across Q1 to enage external PFET in the circuit.
  7. Enable the power supply.
  8. Increase the input supply VIN from 24 V to 60 V and observe the response as shown in Figure 5-6.
Figure 5-5 Overvoltage Protection Response for IN Voltage from 24 V to 40 V
Figure 5-6 Overvoltage Protection Response with External PFET for IN Voltage from 24 V to 60 V