At present we have a single ground plane for analog and digital systems on
the board. I'm considering a separate ground plane beneath the switching
section in an attempt to isolate the high temperature from the digital
section. I'd intend routing this Analog ground plane in isolation back to
the DC input ground return.
Any advice on use of separate ground planes and heat dissipation in surface
mount devices would be greatly appreciated.
Stillorgan Industrial Park
Stillorgan Tel: 00-353-1-2952529
Co. Dublin Fax: 00-353-1-2953625