SLVUBU4 March   2021

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Features
    2. 1.2 Applications
  3. 2Description
    1. 2.1 Input Power and Load (J1/J3 and J2/J4):
    2. 2.2 Enable Control (J5):
    3. 2.3 Over Voltage Protection (J6):
    4. 2.4 Two Back-Back Connected MOSFETs (Q1/Q3 and Q2):
    5. 2.5 Output Slew Rate Control (R2 and C4):
    6. 2.6 Output Schottky Diode (D3) and LED Indication:
    7. 2.7 TVS Selection for 200-V Unsuppressed Load Dump 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. 5.3 200-V Unsuppressed Load Dump Protection
    4. 5.4 ISO 7637-2 Pulse 1 –600 V 50 Ω
  7. 6Board Layout and Bill of Materials
    1. 6.1 Board Layout
    2. 6.2 Bill of Materials
  8.   Revision History

5.3 200-V Unsuppressed Load Dump Protection

GUID-20210211-CA0I-B9DP-4J9P-RLBWQFN9CXC3-low.pngFigure 5-6 Unsuppressed Load Dump 200 V - Output Clamp
GUID-20210211-CA0I-DNZJ-KPC0-JFWWNDX7QXX7-low.pngFigure 5-7 Unsuppressed Load Dump 200 V - Output Cut-off