EMC FLEX BLOG A site dedicated to Automotive EMC Testing for Electronic Modules

Automotive Cold Crank, Load Dump, and Reverse Polarity Protection

11. September 2015 09:08 by streng in
The suppliers of automotive electronic devices are competing these days to lower the cost of th

The suppliers of automotive electronic devices are competing these days to lower the cost of theirs designs. This is a sample of rather expensive solution to ensure proper function of an automotive electronic device during transients on supply lines (12V Battery).


Sample of less expensive solution to prevent reverse polarity, load dump, and cranking pulse from disturbing circuits sourced from a 5V voltage regulator or directly from the 12V B+ line.

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