Title :
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
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;
Conference_Titel :
Electromagnetic Compatibility (APEMC), 2010 Asia-Pacific Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-5621-5
DOI :
10.1109/APEMC.2010.5475516
