ESD試験器のケーブル共振による接触放電波形のリンギング発生と検証

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2024/03/01

タイトル(英語): Generation and Its Verification of Ringing due to Cable Resonance in Contact Discharge Current Waveform from ESD Generator

著者名: 戸澤　幸大（（株）ノイズ研究所／名古屋工業大学），石田　武志（（株）ノイズ研究所），王　建青（名古屋工業大学），藤原　修（（株）ノイズ研究所／名古屋工業大学）

著者名(英語): Yukihiro Tozawa (Noise Laboratory Co., LTD./Nagoya Institute of Technology), Takeshi Ishida (Noise Laboratory Co., LTD.), Jiaqing Wang (Nagoya Institute of Technology), Osamu Fujiwara (Noise Laboratory Co., LTD./Nagoya Institute of Technology)

キーワード: ESD試験器，接触放電波形，リンギング，ケーブル共振，伝達インピーダンス　　ESD generators，contact discharge waveform，ringing，cable resonance，transfer impedance

要約(英語): The ringing due to cable resonance in contact discharge waveforms is verified by contrasting the frequencies of variations in the “transfer impedance” of an ESD generator, which is newly defined in this paper as the rate to a test voltage in the Laplace domain of the complex spectrum of the contact discharge current waveform, with those calculated from an IEC specified simplified equivalent circuit of the ESD generator using the measured return cable impedance ZR and charging cable impedance ZC at one end grounding in the IEC calibration environment. The transfer impedances obtained from the contact discharge measurement waveforms with and without the 2 m return cable present are compared with those from the measured impedances ZR and ZC of the one end grounded return cables under the IEC specified arrangement and the same arrangement as the charging cable, respectively. The result shows that the transfer impedances are confirmed to have impedance variations in the frequency range from 40 MHz to 200 MHz, which fairly correspond to the frequencies of variations in the transfer impedance calculated from the parallel impedance between the return cable and the charging cable with one end grounded. Furthermore, comparison of the transfer impedances for the measured impedances of return cables shorter than 2 m length, which are not specified by the IEC standard, with the corresponding transfer impedances for the measured contact discharge waveforms, indicates that both frequencies of the first resonance peaks are in good agreement and ringing reduces in the subsequent frequency range. In view of the fact that the transfer impedance from 40 MHz to 200 MHz can approximately be expressed as (RB+ZR//ZC) where RB having a typical value of 330 Ω is the IEC specified discharge resistance of the ESD generator, the above finding validates that the transfer impedance variations causing ringing mainly result from the parallel resonance between the return cable and the charging cable.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.144 No.3 （2024）

本誌掲載ページ: 95-104 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/144/3/144_95/_article/-char/ja/