Tool/software:
Hello!
I am wanting to follow-up on this thread from Steve W., I actually am taking over and helping some of the work he performed. We have been using the TPSM63603 on some of our audio board designs and have noticed that we are getting quite a bit of noise on our analog signaling as a result of using the TPSM63603 component. My assumption is that the noise can be attributed to the fact that we used the same analog GND for all of our signaling GND as well as for the power supplies combined with the connection from PGND to DGND.
Our current plan was to isolate and have separate copper poured AGNDs for each of the DC/DC devices to alleviate some of this noise. I was hoping to get some guidance on from TI was regarding how we should go about wiring the AGND and PGND connection for each of these devices. It appears like it is just a wire per your typical application circuit, however, since we are getting a lot of noise as a result of this, is it most suggested to have a large capacitor act as the connection between these GND planes? Do you all have a suggestion on value?
