Hi all,
Im trying to do something like this:
What I want is to feed a 12V monitor that is in my car without interruptions. Sometimes this monitor is feeded by a computer installed on my car and sometimes is feeded by another system that is actived when I put the reverse gear. It dependes if the computer is on or off.
I dont want to use diodes because I want to avoid excessive heat in the board. I have to do that with SUD50P04 P-channel transistor. In the simulation I choosed the FDS4685 because it haves Vds=-40V like the SUD50P04, so I think that this is enough for the simulation.
I did a lot of differents configurations, but it's really hard for me to fully understand the behavior of a PMOS transistor. So I have no idea how to do it right with it.
If someone could help me I would be very grateful.
Thanks in advance
Im trying to do something like this:
What I want is to feed a 12V monitor that is in my car without interruptions. Sometimes this monitor is feeded by a computer installed on my car and sometimes is feeded by another system that is actived when I put the reverse gear. It dependes if the computer is on or off.
I dont want to use diodes because I want to avoid excessive heat in the board. I have to do that with SUD50P04 P-channel transistor. In the simulation I choosed the FDS4685 because it haves Vds=-40V like the SUD50P04, so I think that this is enough for the simulation.
I did a lot of differents configurations, but it's really hard for me to fully understand the behavior of a PMOS transistor. So I have no idea how to do it right with it.
If someone could help me I would be very grateful.
Thanks in advance