Reduction of power supply EMI emission by switching frequency modulation
Files
TR Number
Date
1992-08-05
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Virginia Tech
Abstract
The effect of PWM frequency modulation on power supply conducted EM! noise emission is investigated. Significant reduction of emission is possible with PWM frequency modulation scheme. A forward converter is used to verify the effectiveness of the scheme. A guidance of parameter selection for noise reduction is given.