SLUUCO4 February   2023 TPS1211-Q1

 

  1.   TPS1211Q1EVM: Evaluation Module for Smart High-Side Driver TPS1211-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 Power-Up With EN Control
    2. 5.2 ON and OFF Control With INP Input
    3. 5.3 Input Reverse Polarity Test
    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)

5.3 Input Reverse Polarity Test

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

  1. Set the jumper setting on EVM to default position as shown in Table 5-1.
  2. Set the input supply voltage VIN to 12V and current limit of 10 A.

  3. Connect the power supply positive to T4 and power supply negative to T1. The power supply is now connected in reverse polarity at the input of TPS1211-Q1

  4. Enable the power supply.
  5. Observe the waveform at VOUT (TP2) with an oscilloscope.

    TPS1211-Q1 along with additional circuitry (Q3, D7 and R7) help protect the output from input reverse polarity.

#T5536460-69 shows the TPS1211-Q1 reponse to input reverse polarity captured on the TPS1211Q1EVM Evaluation Board.

Figure 5-6 Input Reverse Polarity Protection