Gray-code input DAC architecture for clean signal generation. - Richen Jiang; Gopal Adhikari; Yifei Sun 001; Dan Yao; Rino Takahashi; Yuki Ozawa; Nobukazu Tsukiji; Haruo Kobayashi 001; Ryoji Shiota (ISPACS, 2017)

Constant on-time controlled four-phase buck converter via two ways of saw-tooth-wave circuit and PLL circuit. - Yi Xiong; Koyo Asaishi; Natsuko Milli; Yifei Sun 001; Nobukazu Tsukiji; Yasunori Kobori; Haruo Kobayashi 001 (ISPACS, 2017)

Two-phase soft-switching DC-DC converter with voltage-mode resonant switch. - Yi Xiong; Yifei Sun 001; Nobukazu Tsukiji; Yasunori Kobori; Haruo Kobayashi 001 (ISPACS, 2017)

DAC linearity improvement with layout technique using magic and latin squares. - Dan Yao; Yifei Sun 001; Masashi Higashino; Shaiful Nizam Bin Mohyar; Tomonori Yanagida; Takuya Arafune; Nobukazu Tsukiji; Haruo Kobayashi 001 (ISPACS, 2017)

Automatic Correction of Current Imbalance for Multi-Phase COT Ripple-Based Control DC-DC Converter. - Shogo Katayama; Jing Li; Yifei Sun 001; Minh Tri Tran 001; Yasunori Kobori; Anna Kuwana; Haruo Kobayashi 001 (ASICON, 2019)

Pulse Coding Control Switching Converter with Adjustable Conversion Voltage Ratio Notch Frequency Generation in Noise Spectrum. - Yifei Sun 001; Minh Tri Tran 001; Yasunori Kobori; Anna Kuwana; Haruo Kobayashi 001 (ASICON, 2019)

EMI Noise Reduction and Output Ripple Cancellation for Full-Wave Type Soft-Switching Converter. - Yifei Sun 001; Minh Tri Tran 001; Yasunori Kobori; Anna Kuwana; Haruo Kobayashi 001 (ASICON, 2019)

Overshoot Cancelation Based on Balanced Charge-Discharge Time Condition for Buck Converter in Mobile Applications. - Minh Tri Tran 001; Yifei Sun 001; Yasunori Kobori; Anna Kuwana; Haruo Kobayashi 001 (ASICON, 2019)

Minimum Output Ripple and Fixed Operating Frequency Based on Modulation Injection for COT Ripple Control Converter. - Minh Tri Tran 001; Yifei Sun 001; Yasunori Kobori; Anna Kuwana; Haruo Kobayashi 001 (ASICON, 2019)

Multi-Phase Full/Half Wave Type Resonant Converters with Automatic Current Balance against Element Variation. - Chen-Hao Zhang; Yifei Sun 001; Minh Tri Tran 001; Yasunori Kobori; Anna Kuwana; Haruo Kobayashi 001 (ASICON, 2019)

Pulse Coding Controlled Switching Converter that Generates Notch Frequency to Suit Noise Spectrum. - Yifei Sun 001; Yasunori Kobori; Anna Kuwana; Haruo Kobayashi 001 (IEICE Trans. Commun., 2020)

Adaptive Convergence Method of Notch Frequency in Noise Spread Spectrum for Pulse Coding Switching DC-DC Converter. - Gui-Yi Dong; Shogo Katayama; Yifei Sun 001; Yasunori Kobori; Anna Kuwana; Haruo Kobayashi 001 (ASICON, 2021)

Notch Frequency Generation Methods in Noise Spread Spectrum for Pulse Coding Switching DC-DC Converter. - Gui-Yi Dong; Shogo Katayama; Yifei Sun 001; Yasunori Kobori; Anna Kuwana; Haruo Kobayashi 001 (LASCAS, 2022)