Filter design for suppression of noise coupling from PCB to DC power supply

Author

Soh, Wei-Shan ; Chang, Weng-Yew ; See, Kye-Yak ; Tarateeraseth, Vuttipon ; Oswal, Manish ; Wang, Lin-Biao

Author_Institution

Electromagn. Effects Res. Lab., Nanyang Technol. Univ., Singapore, Singapore

fYear

2010

fDate

12-16 April 2010

Firstpage

633

Lastpage

636

Abstract

Based on an in-circuit measurement approach, a systematic EMI filter design procedure is developed to suppress the noise from a digital board to the power supply. The two-probe technique adopted for the in-circuit measurement allows the impedances of the power supply and the PCB to be determined under its actual operating condition. With the measured impedance information, a suitable filter topology can be selected and component value computed without any guessing.

Keywords

circuit noise; electromagnetic interference; filters; interference suppression; power supply circuits; printed circuits; DC power supply; PCB; digital board; filter topology; in-circuit measurement approach; noise coupling suppression; systematic EMI filter design; two-probe technique; Circuit noise; Electromagnetic interference; Frequency measurement; Impedance measurement; Noise measurement; Power filters; Power harmonic filters; Power measurement; Power supplies; Probes;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility (APEMC), 2010 Asia-Pacific Symposium on

Conference_Location

Beijing

Print_ISBN

978-1-4244-5621-5

Type

conf

DOI

10.1109/APEMC.2010.5475516

Filename

5475516