SNOU186 September   2021 LM74720-Q1 , LM74722-Q1

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Features
    2. 1.2 Applications
  3. 2Description
    1. 2.1 Input Power and Load (J1/J5 and J2/J6, J8/J12 and J9/J13):
    2. 2.2 Enable Control (J4 and J11):
    3. 2.3 Two Back-to-Back Connected MOSFETs (Q1/Q3-Q2/Q4 and M1/M3-M2/M4):
    4. 2.4 Output Slew Rate Control (R3 and C4, R10 and C13):
    5. 2.5 Output Schottky Diode (D3, D8) and LED Indication (D4, D10) :
    6. 2.6 TVS Selection for 12-V Battery Protection:
    7. 2.7 TVS Selection for 24-V Battery Protection:
    8. 2.8 Test Points:
  4. 3Schematic
  5. 4Test Equipment Requirements
    1. 4.1 Power Supplies
    2. 4.2 Meters
    3. 4.3 Oscilloscope
    4. 4.4 Loads
  6. 5Test Setup and Results
    1. 5.1 Initial Setup
    2. 5.2 Power Up
    3. 5.3 Enable Control
    4. 5.4 Hot-Plug and Disable using EN
    5. 5.5 Inrush Current Control
    6. 5.6 Load Response
  7. 6Board Layout and Bill of Materials
    1. 6.1 Board Layout
    2. 6.2 Bill of Materials

2.1 Input Power and Load (J1/J5 and J2/J6, J8/J12 and J9/J13):

Input power is applied at the terminals J1 and J5 for channel 1 and J8 and J12 for channel 2. Terminals J2 and J6, J9 and J13 provide output connection to load for channel 1 and channel 2 respectively.
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