EDN

Enhancing a power supply to ensure EMI compliance

In the United States and Europe, Class A and Class B limits of FCC (Federal Communications Commission) and VDE (European association for electrical, electronic, and information technologies) standards ...
Electronic Design

Layout Power Supply Boards to Minimize EMI - Part 3: EMI Basics

Electromagnetic far field impedance is about 377Ω = 120π or 29,9792458 × 4 × πΩ for the vacuum velocity of light. Any electromagnetic wave far enough from its source (rule of thumb >wavelength/2 × π) ...
EDN

255 W 80 PLUS Platinum PC Power Supply

This document is a design example report of a 255 W 80 PLUS Platinum PC power supply employing HiperPFS™-2 PFS7328H and HiperLCS™ LCS703HG. It has integrated PFC stage using PFS7328H from HiperPFS-2 ...
Electronic Design

Layout Power Supply Boards to Minimize EMI: Part 2

The second part of this feature on controlling EMI in power supply boards explores the challenges posed by external switch drive signals and the effectiveness of shielding techniques. Methods to ...