異なるESD試験器の気中放電に対する放電電流の波形比較と相違要因

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: 2016/10/01

タイトル(英語): Waveform Comparison and Difference Factors in Discharge Currents for Air Discharges from Different ESD Generators

著者名: 高　義礼（釧路高専電子工学科），石田　武志（（株）ノイズ研究所），藤原　修（名古屋工業大学）

著者名(英語): Yoshinori Taka (Department of Electronic Engineering, National Institute of Technology, Kushiro College), Takeshi Ishida (Noise Laboratory Co., LTD.), Osamu Fujiwara (Nagoya Institute of Technology)

キーワード: ESD試験器，放電電流，電流校正，気中放電，固有波形　　ESD generator，discharge current，current calibration，air discharge，peculiar waveform

要約(英語): Electrostatic discharge (ESD) generators must be calibrated for contact discharges with the current waveform specified in IEC61000-4-2; however, there are no requirements in current waveforms due to their bad reproducibility for air discharges in the IEC standard. Nevertheless, the air-discharge immunity testing is under obligation in the present standard. This implies that different ESD generators are likely to provide significantly different test results for air discharge testing. In this study, two types of different ESD generators were used to measure discharge currents both for contact and air discharges with respect to charge voltages from 2 kV to 8 kV under the same conditions of experimental environment. As a result, we confirmed that the measured waveforms were almost identical for contact discharges regardless of charge voltages, while we found that they are quite different for air discharges with the same approaching speed when the charge voltages are increased. The latter result is because the generator has different impedance characteristics deriving from its structure, and because the spark lengths from the generators with the same charge voltage are different. A formula for calculating the discharge current from an ESD generator through an ideal switch in lieu of a spark, which was previously derived by us, was also employed to obtain the current waveform peculiar to the generator, in order to reveal that the formula provides the different upper limit of air discharge current peaks according to the generator.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.136 No.10 （2016）

本誌掲載ページ: 649-656 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/136/10/136_649/_article/-char/ja/