SLVUBU5A
May 2020 – December 2020
LM7481-Q1
Trademarks
1
Introduction
1.1
Features
1.2
Applications
2
Description
2.1
Input Power and Load (J1/J3 and J2/J4):
2.2
Enable Control (J5):
2.3
Over Voltage Protection (J6):
2.4
Input Voltage Monitor (J10 and VIN_MON):
2.5
Two Back-Back Connected MOSFETs (Q1/Q3 and Q2/Q4):
2.6
Output Slew Rate Control (R2 and C4):
2.7
Output Schottky Diode (D2) and LED Indication:
2.8
TVS Selection for 12-V Battery Protection:
2.9
TVS Selection for 24-V Battery Protection:
2.10
RC Input Snubber Option (R7 and C15):
2.11
Optional LC Filter at the Output (L2 and C11):
2.12
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
Over Voltage Protection
5.4
Enable Control
5.5
Input Reverse Polarity
5.6
Load Transient Response
6
EVM Board Layout and Bill of Materials
6.1
EVM Board Layout
6.2
Bill of Materials
7
Revision History
5.4
Enable Control
Figure 5-6
Turn ON using EN/UVLO
Figure 5-7
Turn OFF using EN/UVLO