M.Phil. Student, University of Macau Research Interests: Power Management, Power Electronics, Integrated Circuits Email: Ricardo.Sung@outlook.com / / /

News

• 1 first-author paper accepted to CICC2025.
• 1 first-author paper accepted by ISSCC2025.
• Finished a project about single-input-multiple-output (SIMO) DC-DC converter in collaboration with 3Peak INCORPORATED.
• Started my M.Phil. life in University of Macau.

Education

Publication

1. Shousheng Han*, Fei Song*, Zhongyao Zhu, Xiaoming Wu, Hanjun Jiang, Tianling Ren, Yan Lu, A LEGO-Like Easy-Stacking Step-Up SC Converter with Ultra-High and Wide VCR Using All Input-Stress-Only Devices, 2025 IEEE Custom Integrated Circuits Conference (CICC), 2025.
2. Fei Song*, Shousheng Han*, Rui P. Martins, Yan Lu, An 85-230V AC to 3.3-4.6V DC 1.52W Capacitor-Drop Sigma-Floating-SC AC-DC Converter with 81.3% Peak Efficiency, 2025 IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, USA, 2025, pp. 1-3, doi: 10.1109/ISSCC49661.2025.10904504.
3. Fei Song, Ying Zhang, and Jing Zhang, Optimization of CNN-based Garbage Classification Model, CSAE 2020, New York, USA, Article 107, 1–5. https://doi.org/10.1145/3424978.3425089

Project

1. An 85-230VAC input and 3.3-4.6VDC output AC-DC converter

   Oct. 2023 - Oct. 2024
   • A Sigma-Floating-SC topology is proposed to achieve 81.3% peak efficiency and 1.52W maximum output power.
   • Up to 10% increased efficiency over a large load current range, compared with prior works.
   • The design is fabricated in a 180nmBCD process and the manuscript has been accepted by ISSCC 2025.
2. Ultra-Light-Weight Multi-Chip Easy-Stacking Step-Up SC DC-DC Converter with Ultra-High and Wide VCR

   Oct. 2023 - Oct. 2024
   • The design is fabricated in a 180nmBCD process and the manuscript has been accepted by CICC 2025.
3. A fast-transient response single-input-multiple-output DC-DC converter

   Sep. 2022 - Oct. 2023
   • The design utilize an auxiliary capacitor stacked with the input power source to increase the inductor charging speed and thereby improve the transient response.
   • Collaborated with 3Peak INCORPORATED.
4. Low-power, high transient response LDO design without off-chip capacitors

   Nov. 2020 - Aug. 2021
   • Developed a bandgap with 1.2V voltage reference and 50nA current reference, whose power consumption was less than 200nW, in the temperature variation range of -40 to 125 degrees celsius.
   • Developed a circuit of super positive feedback and self-bias amplifier, with static power consumption of 3-7uA and high bandwidth of 80M-160MHz.
   • Won the first prize of the National University Student Integrated Circuit Innovation and Entrepreneurship Competition in Southwest Devision (2021).
5. Smartphone-based Analysis of Non-destructive Apple Brix Measurement

   Apr. 2021 - Aug. 2021
   • Designed an optical system using Zemax OpticStudio to achieve Czerny-Turner Spectroscope structure using a positive (converging) lens, two spherical mirrors, a blazed grating and a linear CCD.
   • Designed a CCD driver board including a Xilinx FPGA, a Toshiba linear CCD, a high-speed and high-precision ADC and so on to capture light spectra and transmit digital spectra data to smart phones.
   • Programmed verilog HDL codes on Xilinx FPGA to drive CCD and ADC, besides communicating with smart phones by USB protocol.
   • Won the second prize of the National University Student’s Opt-Sci-Tech Competition (2021).
6. Intelligent Biological Microscope

   Apr. 2020 - July. 2020
   • Designed a multi-method of resizing and merging limited images under microscopes to make up a full cell image.
   • Migrated the M2Det algorithm to suit the blood cell recognition, segmentation, and counting.
   • Developed a dataset of blood cells with five classifications including neutrophils, lymphocytes, monocytes, eosinophils and basophils.
   • Won the first prize of the 8th National University Student’s Opt-Sci-Tech Competition (2020) and the first prize of China-U.S. Young Maker Competition in Chengdu Division (2020).
7. Intelligent Device to Protect Children left in Cars

   Apr. 2019 - July. 2019
   • Designed a multi-model network merged by AgeNet and Yolo-v2 to detect children left in cars.
   • Used sensors such as temperature and humidity sensor, Oxygen sensor and AIoT to send data to private servers.
   • Programmed a mobile app to receive warnings sent by servers to remind children’s guardians of the states in cars about their children.
   • Won the third prize of the National University Student’s Opt-Sci-Tech Competition (2019).

Honors & Awards

1. First Prize of the National University Student Integrated Circuit Innovation and Entrepreneurship Competition in Southwest Devision, 2021.
2. Second Prize of the National University Student’s Opt-Sci-Tech Competition, 2021.
3. First Prize of the National University Student’s Opt-Sci-Tech Competition, 2020.
4. First Prize of China-U.S. Young Maker Competition in Chengdu Division, 2020.
5. Third Prize of the National University Student’s Opt-Sci-Tech Competition, 2019.
6. Third Prize of the National Undergraduate Engineering Training Integration Ability Competition in Sichuan Province Division, 2019.

Work Experience

• Excellent President of Application Electronics Association

  Sep. 2019 – Sep. 2021
  Organized lectures and competitions about electronic design and program.
• Member of UESTC Linux User Group

  July 2020 – July 2021

Supervised Students

Qingpeng, ZOU (MPhil student, University of Macau)