A design method of decoupling circuits for a digital PCB to reduce high frequency current on power and ground planes

Author

Fukumoto, Yukihiro ; Nakamura, Satoshi ; Wada, Osami ; Koga, Ryuji

Author_Institution

Matsushita Electr. Ind. Co. Ltd., Osaka, Japan

fYear

1999

fDate

1999

Firstpage

9

Lastpage

12

Abstract

This paper describes a design technique of decoupling circuits that can reduce high frequency current rushing into the power/ground planes of a digital PCB. In this technique, the IC is modeled as a current source of high frequency, and a parameter that represents the effect of the high frequency current reduction is derived. Then, by using the parameter, a design procedure to obtain the optimal bypass capacitor and the decoupling inductor is shown. Furthermore, validity of this modeling is shown by experimental study

Keywords

capacitors; digital circuits; electromagnetic compatibility; electromagnetic interference; inductors; integrated circuit modelling; printed circuits; EMC; IC modeling; decoupling circuits design; decoupling inductor; digital PCB; electromagnetic radiation noise; ground planes; high frequency current reduction; high frequency current rush reduction; high frequency current source; optimal bypass capacitor; power planes; Capacitors; Coupling circuits; Design methodology; Digital circuits; Frequency; Impedance; Inductors; Integrated circuit modeling; Large scale integration; Pins;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 1999 International Symposium on

Conference_Location

Tokyo

Print_ISBN

4-9980748-4-9

Type

conf

DOI

10.1109/ELMAGC.1999.801249

Filename

801249