Curriculum Vitae

Education

• Ph.D in Electrical and Electronics Engineering, University of Macau, China 08. 2019 - 05. 2023
  
• B.Sc in Electrical and Electronics Engineering, University of Macau, China 08. 2015 - 06. 2019
  

Professional Experience

• Postdoctoral Fellow (Visiting) 02. 2025 - 07. 2026 (excepted)
       UC Berkeley, USA (Supervisor: Prof. Jun-Chau Chien)
  
• UM Macau Fellow (Postdoctoral Fellow) 08. 2023 - 07. 2026
       University of Macau, China (Supervisor: Prof. Chi-Seng Lam & Prof. Man-Kay Law)
  

Teaching Experience

• Resident Tutors 08. 2020 - 06. 2023
       Moon Chun Memorial College, University of Macau
  

• Teaching Assistant 08. 2020 - 06. 2023
       Moon Chun Memorial College, University of Macau
       Department of Electrical and Computer Engineering, University of Macau
  

Scientific Publication

  Patent

1. Chi-Wa U, Chon-Fai Lee, Cheng-Hou Cheong, Chi-Seng Lam, Man-Kay Law, Rui P. Martins, “A Switched Capacitor Network Bandgap Voltage Reference Circuit and Its Temperature Compensation Method” Chinese Patent for Invention, Application, No. 202410457322.2, 16 Apr. 2024.
2. Chi-Wa U, Chon-Fai Lee, Man-Kay Law, Chi-Seng Lam, Rui P. Martins, “Calibration Circuit of Current Mode Bandgap Voltage Reference” Chinese Patent for Invention, Granted, No. 202111304187.0, Jan. 2023.
   

  Journal Papers

1. Chi-Wa U,Zhaoxi Li, Cheng-Hou Cheong, Chon-Fai Lee, Chi-Seng Lam, “AI-Enhanced Wide Supply Voltage Bandgap Voltage Reference Circuit With Multi-Objective Optimization for Automotive Applications”, IEEE Open Journal of Circuits and Systems, Accepted [SCI, Q2]
2. Chi-Wa U, Man-Kay Law, Chi-Seng Lam, Rui P. Martins, “Sub-μW Auto-Calibration Bandgap Voltage Reference with 1σ inaccuracy of ±0.12% within -40 to 120°C”, IEEE Journal of Solid-State Circuits, vol. 59, no. 2, pp. 540-550, Feb. 2024. [SCI, Q1]
3. Chi-Wa U, Cong Liu, Chi-Seng Lam. Rui P. Martins, “An 1V Supply, 740nW, 8.7ppm/℃ Bandgap Voltage Reference Employing Segmented Curvature Compensation,” IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 70, no. 12, pp. 4755-4766, Dec. 2023. [SCI, Q1]
4. Chi-Wa U, Man-Kay Law, Chi-Seng Lam, Rui P. Martins, “Switched-Capacitor Bandgap Voltage Reference for IoT Applications,” IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 69, no. 1, pp. 16-29, Jan. 2022. [SCI, Q1]
5. Chi-Wa U, Wen-Liang Zeng, Man-Kay Law, Chi-Seng Lam, Rui P. Martins, “A 0.5-V Supply, 36nW Bandgap Reference with 42ppm/°C Average Temperature Coefficient Within -40°C to 120°C,” IEEE Transactions on Circuits and Systems I – Regular Papers, vol. 67, no. 11, pp. 3656-3669, Nov. 2020. [SCI, Q1]
   
6. Chon-Fai Lee, Chi-Wa U, Rui P. Martins, Chi-Seng Lam, “0.4-V Supply, 12-nW Reverse Bandgap Voltage Reference with Single BJT and Indirect Curvature Compensation” IEEE Transactions on Circuits and Systems I – Regular Papers (TCAS-I), vol. 71, no. 11, pp. 5040-5053, Nov. 2024. [SCI, Q1, Highlight of 2024 Nov. Issue]
7. Chon-Fai Lee, Chi-Wa U, Rui P. Martins, Chi-Seng Lam, “A 0.5V 22.5ppm/°C Bandgap Voltage Reference with Leakage Current Injection for Curvature Correction” IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 70, no. 10, pp. 3897-3901, Oct. 2023. [SCI, Q2]
8. Wen-Liang Zeng, Edoardo Bonizzoni, Chi-Wa U, Chi-Seng Lam, Sai-Weng Sin, U-Fat Chio, Franco Maloberti, and Rui Paulo Martins, “Switching Capacitor ADC Assisted DC-DC Buck Converter with Fast Transient Recovery,” IEEE Transactions on Circuits and Systems II – Express Briefs (TCAS-II), vol. 67, no. 9, pp. 1669-1673, Sept. 2020. [SCI, Q2]
9. Tianzheng Yan, Chi-Wa U, Man-Kay Law, Chi-Seng Lam, “A -40°C to 180°C, 1.58 ppm/°C, 1.3 µW Bandgap Voltage Reference with Segmented Curvature Compensation,” Microelectronics Journal, vol. 105, pp.104897, Nov. 2020. [SCI]
10. Wen-Ming Zheng, Wen-Liang Zeng, Chi-Wa U, Chi-Seng Lam, Yan Lu, Sai-Weng Sin, Man-Chung Wong, Rui P. Martins, “Analysis, Design and Control of an Integrated Three-Level Buck Converter under DCM Operation,” Journal of Circuits, Systems, and Computers, vol. 29, no. 1, pp. 2050011, Feb. 2019. [SCI]

  Conference Papers

1. Chi-Wa U, Man-Kay Law, Chi-Seng Lam, Rui P. Martins, “Auto-Calibration Technique for Current-Based Bandgap Voltage Reference,” 2021 IEEE Asian Solid-State Circuits Conference (A-SSCC), Busan, Korea, Republic of, 2021, pp. 1-3. [Highlighted Paper]
2. Chi-Wa U, Wen-Liang Zeng, Chi-Seng Lam “Review and Comparison of Integrated Inductive-Based Hybrid Step-Down Dc-Dc Converter under CCM Operation” The 15th annual Asia Pacific Conference on Circuits and Systems (APCCAS), Bangkok, Thailand, 11-14 Nov. 2019, pp. 49-52.
3. Chi-Wa U, Chi-Seng Lam, Man-Kay Law, Sai-Weng Sin, Man-Chung Wong, Seng-Pan U, Rui P. Martins, “CCM operation analysis and parameters design of Negative Output Elementary Luo Converter for ripple suppression”, The 43rd Annual Conference of the IEEE Industrial Electronics Society (IECON 2017), Beijing, China, Oct. 29 – Nov. 01, 2017, pp. 4867 - 4871.
4. Wen-Liang Zeng, Chi-Wa U, Chi-Seng Lam, “Review and Comparison of Integrated Inductive-Based Hybrid Step-Up DC-DC Converter under CCM Operation”, The 62nd Annual Conference of the IEEE International Midwest Symposium on Circuits and Systems (MWCAS), Dallas, TX, USA, 4-7 Aug. 2019, pp. 730-733.