Hello,
I recently did a design project, and I did a rough mock-up of the design with perf-board, but I would like to turn that mock-up into a nice PCB. I don't have much experience in this area, so I was hoping I could get some feedback on the layout I put together. I have attached images of the layout I made (all done in Eagle).
I guess my main concerns are with EMI/EMC and with U5 (shown in layout). U5 is a current monitor, so it senses small voltages across R1 and amplifies it according to the values of R12, R13 and R14. I'm sure this highly sensitive device can be susceptible to noise, and I don't know if my layout would cause any problems with that.
There are some things that may be of importance as well. First, the signal at H3 is a PWM output signal switching an inductive load with a frequency of 250 Hz. H1 is an unregulated DC voltage ranging from 12-24 V. H2 is system ground. U4 is the switching device; I tried to keep this as far away from my uC as I could.
I would greatly appreciate any feedback that anyone has to offer. This is my first attempt at a board design this complex, so thanks in advance . Also, when you click on the thumbnails, click on the image again for a full-size version (otherwise it's a bit blurry).
I recently did a design project, and I did a rough mock-up of the design with perf-board, but I would like to turn that mock-up into a nice PCB. I don't have much experience in this area, so I was hoping I could get some feedback on the layout I put together. I have attached images of the layout I made (all done in Eagle).
I guess my main concerns are with EMI/EMC and with U5 (shown in layout). U5 is a current monitor, so it senses small voltages across R1 and amplifies it according to the values of R12, R13 and R14. I'm sure this highly sensitive device can be susceptible to noise, and I don't know if my layout would cause any problems with that.
There are some things that may be of importance as well. First, the signal at H3 is a PWM output signal switching an inductive load with a frequency of 250 Hz. H1 is an unregulated DC voltage ranging from 12-24 V. H2 is system ground. U4 is the switching device; I tried to keep this as far away from my uC as I could.
I would greatly appreciate any feedback that anyone has to offer. This is my first attempt at a board design this complex, so thanks in advance . Also, when you click on the thumbnails, click on the image again for a full-size version (otherwise it's a bit blurry).