SLUUCU8 july   2023

 

  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 Setup
    2. 2.2 Physical Access
      1. 2.2.1 Test Equipment and Setup
        1. 2.2.1.1 Power Supplies
        2. 2.2.1.2 Meters
        3. 2.2.1.3 Oscilloscope
        4. 2.2.1.4 Loads
    3. 2.3 General Configurations
  8. 3Implementation Results
    1. 3.1 Test Setup and Procedures
      1. 3.1.1 Power-Up and Power-Down With EN Control
      2. 3.1.2 Input Overvoltage Test
      3. 3.1.3 Output Hot-Short Test
  9. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials (BOM)
  10. 5Additional Information
    1.     Trademarks

3.1 Test Setup and Procedures

Make sure the evaluation board has default jumper settings as shown in Table 4-1.

Table 3-1 Default Jumper Setting for LM74912Q1EVM Evaluation Board
JumperDefault SettingFunctionality
J51-2EN connected to C. EN pulled High.
J61-2SLEEP/ connected to C. SLEEP mode disabled.
J71-2D5 LED indication when output High.
J82-3SLEEP_OV connected to C. Overvoltage cut-off functionality in SLEEP mode.
J132-3FLT/ pulled up to C.
GUID-20230717-SS0I-2TRL-8ML9-VXPNWHQCDVW5-low.jpgFigure 3-1 LM74912Q1EVM Setup With Test Equipment

Use the followinginstructions before starting any test and repeat again before moving to next test.

  1. Set the power supply output VIN to 0 V.
  2. Turn ON the power supply and set the power supply output VIN to 12 V and current limit of 10 A.
  3. Turn OFF the power supply.
  4. Set the jumper setting on EVM to default position as shown in Table 4-1.