A Frequency Compensation Technique for Variable Output Low Dropout Regulators. - Akira Yamazaki; Kouhei Yamada; Satoshi Sugahara (APCCAS, 2006)

High Efficiency PWM Controlled Micro DC-DC Converter for Portable Electronic Equipments. - Satoshi Sugahara; Kouhei Yamada; Tetsuya Kawashima; Masaharu Edo; Toshiro Sato; Kiyohito Yamasawa (IEICE Trans. Commun., 2008)

Over Current Protection for PFM Control DC-DC Converter. - Kouhei Yamada; Satoshi Sugahara; Nobuo Fujii (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009)