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Title
Japanese:S1920204 超小型衛星TSUBAME搭載用電源回路のスパイクノイズ対策([S192-02]宇宙システムに関する実践的解決と知見の汎用化(2),宇宙工学部門) 
English: 
Author
Japanese: 松下 将典, 宮里 和良, 谷津 陽一, 有元 誠, 伊藤 慶, 松永三郎.  
English: 松下 将典, 宮里 和良, Yoichi Yatsu, 有元 誠, 伊藤 慶, Saburo Matunaga.  
Language Japanese 
Journal/Book name
Japanese:年次大会 : Mechanical Engineering Congress, Japan 
English: 
Volume, Number, Page Vol. 2014       
Published date Aug. 2014 
Publisher
Japanese:一般社団法人日本機械学会 
English: 
Conference name
Japanese:日本機械学会2014年度年次大会 
English: 
Conference site
Japanese:北海道 
English: 
Abstract In this paper, we reported measures against spike noises in a charger circuit of the micro-satellite "TSUB AME" which has high power consumption (MAX 68W). The spike noises occurred from an FET as a switching regulator in the Li-ion battery charger circuit. The main cause of the spike noises was pattern design and another cause was that choices of FET and inductor weren't optimal. Thus, by major upgrade of EPS circuits, the inductor is changed to another inductor which the self-resonant frequency is higher than frequencies of the spike noises, and the FET is also changed to an FET with low reverse recovery current. As a result, there are no spike noises in the charger circuit.

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