Automotive battery input protection reference design

18th July 2018
Posted By : Lanna Cooper
Automotive battery input protection reference design


Automotive battery power supply lines are prone to transients while running the system. Typical protections required are overvoltage, overload, reverse polarity, and jump start. During the life of a car, the alternator may be replaced with a non-OEM part.

The after-market alternator may have different or no load dump protection, which could lead to damaging the electronic control unit (ECU).

This TI Design provides protection to handle these potential unsuppressed load dump pulses (12 and 24V) with hardware control. Class A operation may be attained during unsuppressed load dump pulses.


  • Wide input protection voltage range
  • Scalable to multiple battery topologies (12, 24, 48V)
  • Configurable options to support Class A operation during unsuppressed load dump pulses
  • Compliance to ISO7637-2, ISO16750-2

Click here for more information.

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