SLUUCR5A december   2022  – june 2023 LM74900-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 EVM Applications
  5. 2Description
  6. 3Schematic
  7. 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
  8. 5Test Setup and Procedures
    1. 5.1 Power-Up and Power-Down With EN Control
    2. 5.2 Input Overvoltage Test
    3. 5.3 Overcurrent Protection Test
    4. 5.4 Output Hot-Short Test
  9. 6EVAL Board Assembly Drawings
    1. 6.1 PCB Drawings
  10. 7Bill of Materials (BOM)
  11. 8Revision History

5.4 Output Hot-Short Test

Use the following instructions to perform output the hot-short test.

  1. Set the input supply voltage VIN to 12 V and current limit of 10 A.
  2. Turn ON the power supply and observe start-up of output voltage, HGATE, and DGATE.
  3. Short the output to GND. That is, VOUT to GND with a cable and observe the short-circuit response of LM74900-Q1 using an oscilloscope.

Figure 5-9 shows hot-short response of LM74900-Q1 on LM74900Q1EVM evaluation board.

GUID-20221128-SS0I-CRFT-HX05-3TCXFBQ1FJPJ-low.png Figure 5-9 Output Hot-Short Response of LM74900-Q1 Device