SLVUBX8B October   2020  – December 2021 TPS2661

 

  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 Overload Protection Test
    2. 5.2 Output Short-Circuit Test
    3. 5.3 Input Undervoltage Protection Test
    4. 5.4 Output Undervoltage Protection Test
    5. 5.5 Output Overvoltage Protection Test
    6. 5.6 TPS26612 Overload Protection Test
    7. 5.7 Current Limiting for VIN < –Vs
    8. 5.8 Surge Protection Test (Current Input, CH1)
    9. 5.9 Surge Protection Test (Analog Output, CH2)
  7. 6EVAL Board Assembly Drawings and Layout Guidelines
    1. 6.1 PCB Drawings
  8. 7Bill Of Materials (BoM)
  9. 8Revision History

5.4 Output Undervoltage Protection Test

Use the following instructions to perform output undervoltage protection test:

  1. Set dual polarity regulated power supply to +15 V : 0 V : –15 V and apply the power at connector J2

  2. Connect a load of 3 kΩ between I_IN_1 and AGND_1 at connector J1

  3. Apply a voltage of 0 V at I_OUT_1 and gradually decrease the voltage to –15.4 V to trigger the output undervoltage fault

  4. Observe the waveforms using an oscilloscope

Figure 5-8 shows output undervoltage protection response of TPS26610 on TPS2661EVM eFuse Evaluation Board.

GUID-20201015-CA0I-NNW3-HBGK-SJMWSVRXKJS8-low.pngFigure 5-8 Output Undervoltage Protection Response of TPS26610 Device