Automotive DC-DC supply - what to look out for?

[blapcb]

Hi folks. I am designing a DC-DC power supply for 3.3v and 5v circuits to operate in an automotive environment (i.e. will be connected to a truck/car battery). I have observed some strange things like memory corruption on the micro and other things which seem to happen when more than one of the device are connected to the same supply.

My question is, what might I be missing about a power supply that has to operate in an automotive environment like this?

I have attached the circuit diagram

Thanks!

 

[Awarapunshee]

In my opinion an inductor between diode D1 and C1 will solve your problems.

Regards

 

[grittinjames]

u can use some emi filter or cover entire circuit in a grounded metal cabin

 

[viks]

Hi
I am doing similar project.
Do you think that we need Isolation here.

Are there any regulator available which provide Isolation too.
Thanks