How to Choose & Place Decoupling Capacitors to Reduce the Cost of the Electronic Products

PCB designs, it becomes more challenging to manage clean power supplies. The number of decoupling capacitors used for a power delivery system keeps increasing as well. This causes two problems for board designers and layout engineers: 1) How to determine the numbers and the types of decoupling capacitors needed for a particular design; and 2) Where to place the selected capacitors on board. Without a clear set of tools and methodologies to solve these two problems, many boards would have to be treated in a pessimistic and conservative way and would end up with a lot of unnecessary decoupling capacitors, which increases design cost, reduces board reliability, and also makes it extremely difficult to place and route capacitors in a limited board space.