Hi
The following problem: With an engine control unit for an injection system
it happens again and again that a fixed voltage regulator type TLE4274 5V
is defective although there is a TVS diode on the on-board voltage side is used.
The TLE is said to be able to handle an input voltage of max. 40V !?
Unfortunately the ECU is completely potted so that you can only swap the 5v regulator
by cutting a window in the aluminum housing (see video) and major internal changes
to the circuit are not possible, a circuit diagram does not exist either.
I'm looking for an extern filter that reliably eliminates interference in the vehicle electrical
system such as load dump, overvoltage, superimposed AC voltages, negative voltages, etc.
(component, assembly group, circuit diagram...)
Anyone have an idea?
greetings