SLVUBX9 October   2020 TPS2640

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 EVM Applications
  3. 2Description
  4. 3Schematics
  5. 4General Configurations
    1. 4.1 Physical Access
    2. 4.2 Test Equipment
      1. 4.2.1 Power Supplies
      2. 4.2.2 Meters
      3. 4.2.3 Oscilloscope
      4. 4.2.4 Loads
    3. 4.3 Test Setup
    4. 4.4 Test Procedure
      1. 4.4.1 Preliminary Tests
      2. 4.4.2 Output Voltage Start-Up Time Test
      3. 4.4.3 Current Limit and Fault Responses Test
      4. 4.4.4 Output Short-Circuit Protection Test
      5. 4.4.5 Reverse Polarity Test
        1. 4.4.5.1 Overvoltage Clamp Response
  6. 5EVM Board Assembly Drawings and Layout Guidelines
    1. 5.1 PCB Drawings
  7. 6Bill Of Materials (BOM)

4.4.5.1 Overvoltage Clamp Response

Follow the instructions to verify the Overvoltage clamp response of the device:

  1. Set J7 in 1-2 position

  2. Set the power supply to 28 V and load of 1 A at the output.

  3. Now apply transient input voltage (28 V to 40 V) for 20 ms and verify the Overvoltage clamp response as Figure 4-9 shows.

    GUID-20200917-CA0I-JDFP-GJGC-XXVSF8PVHH0F-low.pngFigure 4-9 Overvoltage Clamp Response.