タグ: DC-DC

LDO and DC-DC Power Layout — the Key Details of Getting Capacitors and Ground Right

The layout of the power section is far more than just connecting the chip and running the caps over. How close the input and output capacitors sit to the pins, how the ground return runs, how much copper you leave for the switch node, which side you take the feedback sample from — these details together decide the board’s ripple level, heat situation, and EMC performance. Below, the layout points of LDO and DC-DC are broken out separately, for engineers to refer to during the actual board drawing after the topology is settled at selection time. 1. The Fundamental Difference Between LDO and DC-DC An LDO is a linear device; […]