SLUUCW6 November   2023 LM74930-Q1

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 Test Points and Connectors
    2. 2.2 Test Equipment and Setup
      1. 2.2.1 Power Supplies
      2. 2.2.2 Meters
      3. 2.2.3 Oscilloscope
      4. 2.2.4 Loads
    3. 2.3 Test Setup and Procedures
      1. 2.3.1 Power-up and Power-down with Input Voltage
      2. 2.3.2 Unsuppressed Load Dump 200 V - Output Clamp
      3. 2.3.3 Overcurrent Protection Test
      4. 2.3.4 Output Hot-Short Test
  8. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials (BOM)
  9. 4Additional Information
    1.     Trademarks

2.3.4 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 LM74930-Q1 using an oscilloscope.

Figure 3-7 shows hot-short response of LM74930-Q1 on LM74930Q1EVM evaluation board.

GUID-20231016-SS0I-9HVX-CXP7-TRFBKW8J14WB-low.pngFigure 2-7 Output Hot-Short Response of LM74930-Q1 Device