This document provides an overview of how to design printed circuit boards (PCBs) for embedded switching power supplies. It covers the key rules and considerations to keep in mind when designing a PCB, as well as how to avoid some common mistakes.
The document emphasizes that a good printed circuit board (PCB) layout is critical for the performance of switching power supplies. It identifies key factors affecting design success, including radiated and conducted electromagnetic interference (EMI), stability, efficiency, and longevity. The text advises designers against using auto-routing routines in PCB software because they often disregard trace lengths and signal types, which are essential for managing noise.
The designer must be involved with every aspect of the design, and auto-routing routines should not be used because they disregard trace lengths and signal types.
The physical characteristics of the layout between components must be identical for both leads to prevent one capacitor from seeing higher peak currents and heating.