セラミックコンデンサ入力回路と昇降圧チョッパを用いたLED点灯回路の出力電流脈動低減法

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2019/09/01

タイトル(英語): Output Current Ripple Reduction of LED Driver Using Ceramic-Capacitor-Input Circuit and Buck-Boost Converter

著者名: 門田　充弘（（株）日立製作所 研究開発グループ／首都大学東京），庄司　浩幸（（株）日立製作所 研究開発グループ），畠山　篤史（日立グローバルライフソリューションズ（株）），和田　圭二（首都大学東京）

著者名(英語): Mitsuhiro Kadota (Hitachi, Ltd., Research & Development Group/Tokyo Metropolitan University), Hiroyuki Shoji (Hitachi, Ltd., Research & Development Group), Atsushi Hatakeyama (Hitachi Global Life Solutions, Inc.), Keiji Wada (Tokyo Metropolitan University)

キーワード: LED点灯回路，セラミックコンデンサ，電解コンデンサレス，昇降圧チョッパ，電流不連続モード　　LED driver，ceramic-capacitor，electrolytic capacitor-less，buck-boost converter，discontinuous current mode

要約(英語): This paper proposes an LED driver that consists of a ceramic-capacitor-input rectifier and a buck-boost converter. The LED driver has an advantage of long-life because it does not contain any electrolytic capacitors. However, the issue with electrolytic capacitor-less LED driver is that the ripple of the smoothed voltage becomes large due to insufficient capacitance of the smoothing capacitor. The proposed method, which uses the discontinuous current mode of a buck-boost converter, reduces the output current ripple under such conditions. Experimental results using a 5.7W LED driver prototype demonstrate that the proposed method reduces the output current ripple and that the percent flicker becomes 4.4%, which is smaller than the recommended upper limit of 8%.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.139 No.9 （2019） 特集：家電・民生技術

本誌掲載ページ: 806-813 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/ieejias/139/9/139_806/_article/-char/ja/