SLUUCK8A December   2021  – December 2022 TPS4811-Q1

 

  1.   TPS48111Q1EVM: Evaluation Module for Smart High-Side Driver TPS48111-Q1
  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 Pre-charging Functional Test
    2. 5.2 Power-Up With EN Control
    3. 5.3 ON and OFF Control With INP Input
    4. 5.4 Overcurrent Protection Test
    5. 5.5 Output Hot-Short Test
  8. 6EVAL Board Assembly Drawings
    1. 6.1 PCB Drawings
  9. 7Bill Of Materials (BoM)
  10. 8Revision History

5.2 Power-Up With EN Control

Use the following instructions to verify the power-up profile of TPS48111-Q1:

  1. Remove the output capacitors of 440 µF from the board.
  2. Disable the pre-charge path by connecting INP_G (TP24) to ground.
  3. Connect the EN/UVLO pin (TP3) to ground and INP (TP6) to ground.
  4. Set the input supply voltage VIN to 48 V and current limit of 10 A.
  5. Enable the power supply.
  6. Now, enable the EN/UVLO to HIGH to observe the start-up profile of BST, GATE and SRC when INP = GND as shown in Figure 5-3.
  7. Now, disable the controller by making EN/UVLO = LOW.
  8. Connect INP (TP6) to VAUX to set INP as HIGH.
  9. Now again, enable the EN/UVLO to HIGH to observe the start-up profile of BST, GATE and SRC when INP = HIGH as shown in Figure 5-4.
Figure 5-3 Start-Up Profile of Bootstrap Voltage for INP = GND
Figure 5-4 Start-Up Profile of Bootstrap Voltage for INP = HIGH