SLVUC34 March   2021 TPS2521

 

  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 Set up
      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 Start up the eFuse
    2. 5.2 Over Current Test
    3. 5.3 Output Hot-Short Test
    4. 5.4 Power Up into Short Test
    5. 5.5 Overvoltage Clamp Test
    6. 5.6 Reverse Current Blocking Test
  7. 6EVAL Board Assembly Drawings and Layout Guidelines
    1. 6.1 PCB Drawings
  8. 7Bill Of Materials (BoM)

5.5 Overvoltage Clamp Test

Use the following instructions to perform overvoltage protection test:

  1. Place jumper J4 in suitable position to set required overvoltage clamp voltage as per Table 4-3.
  2. Set the input supply voltage VIN to 5 V (Jumper J4 is open) or 3.3 V (Jumper J4 is shorted) and current limit of 10 A. Apply the supply between VIN and PGND at connector J1 and enable the power supply.
  3. Increase the input supply VIN from 5 V to 8V (Junper J4 is open) or from 3.3 V to 6 V (Jumper J4 is shorted) and observe the waveforms using an oscilloscope.

Figure 5-7 and Figure 5-8 shows over voltage response on TPS25210EVM eFuse Evaluation Board.

GUID-20210329-CA0I-N5P7-W7RZ-9WFRTPWMVPWT-low.gifFigure 5-7 Over Voltage Protection Response of TPS25210x Device at ROVCSEL = OPEN, Cout = 220 μF, Iout = 150 mA, VIN ramped up from 5 V to 8 V
GUID-20210329-CA0I-BGTH-RR28-SCTW5V5LSMJK-low.gifFigure 5-8 Over Voltage Protection Response of TPS25210x Device at ROVCSEL = 0 Ω, Cout = 220 μF, Iout = 120 mA, VIN ramped up from 3.3 V to 6 V