The 2025 IEEE International Solid-State Circuits Conference (ISSCC) was recently held in San Francisco, where a team from Nanjing University presented their research. Their paper, titled “A 6.78-MHz Single-Stage Regulating Rectifier with Dual Outputs Simultaneously Charged in a Half Cycle Achieving 92.2% Efficiency and 131mW Output Power,” was accepted for presentation, marking the first participation by the university at ISSCC. The team was also invited to demonstrate their work during the conference.
Nanjing University Team Recognized
Led by Professor Yi Shi and Associate Professor Hao Qiu from the School of Electronic Science and Engineering, the research culminated in the team receiving the ISSCC Silkroad Award. This award highlights outstanding student contributions from universities within the IEEE Region 10.
Research Significance
The research addresses prevalent challenges in the design of multi-output rectifiers, which are utilized in various applications including industrial automation and consumer electronics. The proposed single-stage dual-output rectifier chip allows for simultaneous charging of multiple outputs, resulting in improved load power and reduced ripple voltage.
Technical Innovation
The chip operates under a mode called charge distribution, which enhances charge distribution among outputs during large load transients, thus improving circuit stability. Fabricated using a 0.18 μm CMOS process, the initial tests demonstrated a peak efficiency of 92.2% and a maximum load power of 131 mW, with minimal ripple voltages reported.
Contribution and Support
The first author of the paper, Quanrong Zhuang, is a Ph.D. student at Nanjing University. This research was supported by the National Natural Science Foundation of China and included collaboration with Dr. Xin Zhang from the IBM Thomas J. Watson Research Center.
About ISSCC
Established in 1953, the ISSCC is regarded as a prestigious platform for launching advancements in solid-state circuit technologies.
For further details, additional information can be found on the ISSCC website and the research group’s website.
Source: Nanjing University News
