Can anyone suggest me good layout sotware for PCB design. Also give some tutorials based on PCB layout. Is there any tool is available for free of cost. My design consists of almost 200 components. Shematic entry and net list generation was over.
You can find on google there are some freewares available for small size PCB design also there are demo versions from Zuken (Cadstar Express) which you can use but I am not sure if it works for 200 components I think Zuken have a lesser limit for number of components.
There is kicad also which I think is a freeware but I am not sure.
Purchase some good tool( Allegro or PADS) if you are going to use for long run, these 2 are user friendly.so start learning u can save lot of time in searching free softwares,After doing all it will lead you to trash.so better buy good EDA tools like Allegro ,pads and Altium.
For switch modes both Motorola and TI had some very nice application notes, in case Motorola i do not remember if it was ON semicudoctors or Freescale who continoued.