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

5.1 Pre-charging Functional Test

Use the following instructions to capture the pre-charging current profile:

  1. First, disable both the Main MOSFETs and pre-charge FET by connecting INP (TP6) and INP_G (TP24) to ground.
  2. Set the jumper setting on EVM to default position as shown in Table 5-1.
  3. Set the input supply voltage VIN to 48 V and current limit of 10 A.
  4. Enable the power supply.
  5. Enable the control input (INP_G at TP24) of the pre-charge MOSFET by releasing the ground connection.
  6. Observe the waveform at SRC. That is, VOUT (TP2) with an oscilloscope.

Figure 5-2 shows an example of pre-charging current profile captured on the TPS48111Q1EVM Evaluation Board.

Figure 5-2 Pre-charge Profile of the Output Capacitance (VIN = 48 V, COUT = 440 µF, No-load)