This is my first post here! I am designing (actually adapting an existing design) a regulator for an automobile generator (not alternator!). THe control circuitry results in a PWM signal. The original design needed low-side switching. For my generator, I only have access to the high side, so I need to switch the high side.
I am attaching a JPG of my current design. I have tested it in Linear Tech's SWCad, and it seems OK to me, but I know nothing. I thought I would run it by the experts here. I am not averse to adding some components to improve reliability. I am open to completely scrapping this design and using something else!!!
The original design used a push-pull pair of transistors driving an N-channel MOSFET. I was not too sure why the push-pull was advantageous, but I needed to reverse the logic on the first stage output to accomodate the P-channel MOSFET. I thought that using an N-Channel first stage would work well.
Any thoughts/suggestions?
-Tony
I am attaching a JPG of my current design. I have tested it in Linear Tech's SWCad, and it seems OK to me, but I know nothing. I thought I would run it by the experts here. I am not averse to adding some components to improve reliability. I am open to completely scrapping this design and using something else!!!
The original design used a push-pull pair of transistors driving an N-channel MOSFET. I was not too sure why the push-pull was advantageous, but I needed to reverse the logic on the first stage output to accomodate the P-channel MOSFET. I thought that using an N-Channel first stage would work well.
Any thoughts/suggestions?
-Tony
Attachments
-
64.3 KB Views: 477