Automotive PSU
Posted: Tue Jan 09, 2018 12:45 pm
Hello Everyone and Happy New Year,
It looks like I need to put a microcontroller into a marine (diesel automotive) environment.
Does anyone have any actual hands on experience with automotive PSU's and could give me some advice how to implement a reliable uP supply? Ideally I need 3.3V and 5V @1A max
What I have in place at the moment is not the usual configuration but a dual battery bank setup with latching power relays to disconnect, isolate or bridge the banks as the charge level dictates, so I foresee some nasty switching spikes floating around.
My initial thoughts were to use suitable TVS's and some inductors feeding a linear power supply (automotive grade 7805 or similar). Looking around the net I found this LTC3895 http://cds.linear.com/docs/en/article/P ... ession.pdf (which looks great) which addresses all my concerns but I don't have the PCB board making facilities or soldering capabilities to do the under-chip soldering required - I have Veroboard and that's it.
Thanks
MAtt
It looks like I need to put a microcontroller into a marine (diesel automotive) environment.
Does anyone have any actual hands on experience with automotive PSU's and could give me some advice how to implement a reliable uP supply? Ideally I need 3.3V and 5V @1A max
What I have in place at the moment is not the usual configuration but a dual battery bank setup with latching power relays to disconnect, isolate or bridge the banks as the charge level dictates, so I foresee some nasty switching spikes floating around.
My initial thoughts were to use suitable TVS's and some inductors feeding a linear power supply (automotive grade 7805 or similar). Looking around the net I found this LTC3895 http://cds.linear.com/docs/en/article/P ... ession.pdf (which looks great) which addresses all my concerns but I don't have the PCB board making facilities or soldering capabilities to do the under-chip soldering required - I have Veroboard and that's it.
Thanks
MAtt