SNOU187
September 2021
Trademarks
1
Introduction
1.1
Features
1.2
Applications
2
Description
2.1
Input Power and Load (J2, J6 and J3, J7):
2.2
Enable Control (J5):
2.3
Two Back-to-Back Connected MOSFETs (Q1 and Q2):
2.4
Output Slew Rate Control (R5 and C5):
2.5
Output Schottky Diode (D3) and LED Indication:
2.6
TVS Selection for 12-V Battery Protection:
2.7
Test Points:
3
Schematic
4
Test Equipment Requirements
4.1
Power Supplies
4.2
Meters
4.3
Oscilloscope
4.4
Loads
5
Test Setup and Results
5.1
Initial Setup
5.2
Power Up
5.3
Enable Control
5.4
Hot-Plug and Disable Using EN
5.5
Inrush Current Control
5.6
Load Response
6
Board Layout and Bill of Materials
6.1
Board Layout
6.2
Bill of Materials
3
Schematic
Figure 3-1
LM74721EVM Schematic