Journals

* Corresponding Author

2025

35. Hyeon-Ji Choi, Joo-Mi Cho, Hyo-Jin Park, Seok-Jun Lee, and Sung-Wan Hong*, "A 0-to-10uF Off-chip Output Capacitor-Scalable Boost Converter Achieving 96.68% Peak Efficiency," IEEE Solid-State Circuits Letters (SSCL)  accepted.

34.  Young-Ju Oh, Chan-Ho Lee, Jeong-Hun Kim, Hyeonho Park, Dowon Jeong, and Sung-Wan Hong*, "A 91.7% Peak-Efficiency 48V-to-1V Pseudo Two-Stage Two-Phase Hybrid Buck Converter,"  IEEE Transactions on Circuits and Systems II (TCAS-II)  , vol. 72, no. 9, pp. 1318-1322, Jul. 2025. [link].

33.  Won-Gyu Kim,  Sang-Yun Nam, Young-Jun Jeon, and Sung-Wan Hong*, "A 1.8V-5.5V LDO-BGR System with LACM Buffer for High PSRR in Camera Applications,"  IEEE Transactions on Circuits and Systems II (TCAS-II) , vol. 72, no. 8, pp. 1108-1112, Aug. 2025. [link].

32. Chan-Ho Lee, Hyeon-Woo Jeong, Young-Ju Oh, Dowon Jeong, Eunju Jeong, Woosung Park and Sung-Wan Hong*, "A Scalable N-level Dickson Charge Pump Based 12V to 1-1.8V Hybrid Buck Converter," IEEE Transactions on Power Electronics (TPEL) , vol. 40, no. 9, pp. 12021-12025, Sept. 2025. [link]

31. Hyo-Jin Park, Hyeonho Park, Dowon Jeong, and Sung-Wan Hong*, "Achieving Wide Voltage-Conversion-Ratio and Reduced Power Losses for High Efficiency with EVCR Buck Converter for a 1.8 V Power Rail," IEEE Transactions on Power Electronics (TPEL) , vol. 40, no. 9, pp. 12011-12014 ,Sept 2025. [link]

30. Ho-Chan Ahn, Chan-Ho Lee, Sang-Yun Nam, Jeong-Hun Kim, HyeonHo Park, Hyun-Woo Jeong, Jeeyoung Shin, Woong Choi, Junwon Jeong, and Sung-Wan Hong*, "A 2 A Dual Loop LDO with Dynamic Negative Feedback Loop and Gm Boosting Error Amplifier for Off-Chip and Cap-less Applications," IEEE Transactions on Circuits and Systems I (TCAS-I), vol. 72, no. 5, pp. 2444 - 2455, May 2025. [link]

29. Young-Ju Oh, Hyun-Woo Jeong, Hyeonho Park, Jeeyoung Shin, Junwon Jeong, Woong Choi, and Sung-Wan Hong*, "Compact Single-Stage Input and Output Rail-to-Rail Class AB Buffer Amplifier with an Asymmetric Output Structure," IEEE Solid-State Circuits Letters (SSCL), vol. 8, pp. 73 - 76, Mar. 2025. [link]

28. Young-Ju Oh, Chan-Ho Lee, Sang-Yun Nam, Jun-Seok Oh, Seok-Jun Lee, Jun-Hyeok Yang, Jaeseung Lee, Sung-Wan Hong*, "A Robust High On-duty Buck Converter Achieving a Peak Effective On-Duty of 0.976 with EMI Suppression," IEEE Transactions on Industrial Electronics (TIE), vol. 72, no. 3, pp. 3223 - 3227, Mar. 2025. [link]

27. Chan-Ho Lee, Jeong-Hun Kim, Hyun-Woo Jeong, Hyeonho Park, Jeeyoung Shin, Junwon Jeong, Woong Choi, and Sung-Wan Hong*, "A 12V Input 0.3V-to-0.6V Output Imbalanced Inductor-Currents Converter that Achieves a Peak Efficiency of 90.7%," IEEE Transactions on Circuits and Systems II (TCAS-II), vol. 72, no. 1, pp. 338 - 342, Jan. 2025. [link]

2024

26. Young-Jun Jeon, Hyun-Woo Jeong, Hyeonho Park, Jeeyoung Shin, Junwon Jeong, Woong Choi, and Sung-Wan Hong*, "A 600mA Multi-Feedback Loops Capacitor-less Low-dropout Regulator with a -40dB Power Supply Rejection at 1MHz with 27.5μA Quiescent Current Consumption," IEEE Transactions on Power Electronics (TPEL), vol. 39, no. 10, pp. 11969 - 11973, Oct. 2024. [link]

25. Chan-Kyu Lee, Chan-Ho Lee, Young-Jun Jeon, Young-Ju Oh, Byunghun Lee, and Sung-Wan Hong*, “A 92 ns Settling-Time Fast-Transient Capacitor-less LDO with a Stable Class B Bandwidth-boosting Error Amplifier and an Improved Buffer for Mobile Applications," IEEE Transactions on Industrial Electronics (TIE), vol. 71, no. 9, pp. 11696 - 11700, Sep. 2024. [link]

24. Hyo-Jin Park, Joo-Mi Choi, Hyeon-Ji Choi, Chan-Ho Lee, Young-Jun Jeon, Jeeyoung Shin, Woong Choi, Junwon Jeong, and Sung-Wan Hong*, “A Simultaneous Energy Transferring SIBO Converter Achieving Low Ripple and High Efficiency for AMOLED Applications," IEEE J. Solid-State Circuits (JSSC), vol. 59, no. 5, pp. 1497 – 1508, May. 2024. [link]

2023

23. Hyeon-Ji Choi, Chisung Bae, Yeunhee Huh, Sang Joon Kim, Seungchul Jung, Kye-Seok Yoon, Joo-Mi Cho, Hyo-Jin Park, Chan-Ho Lee, Su-Min Park Esun Baik, Young-Ju Oh, Ho-Chan Ahn, Chan-Kyu Lee, and Sung-Wan Hong*, “An Ultra-Low Power Soft-Switching Self-Oscillating SIMO Converter for Implantable Stimulation Systems,” IEEE Transactions on Industrial Electronics (TIE), vol. 70, no. 8, pp. 8603 - 8608, Aug. 2023. [link]

2022

22. Chan-Ho Lee, Hyo-Jin Park, Joo-Mo Cho, Hyeon-Ji Choi, Su-Min Park, Esun Baik, Young-Ju Oh, Ho-Chan Ahn, Chan-Kyu Lee, Jeeyoung Shin, Se-Un Shin, and Sung-Wan Hong*, “An Input-Independent Loop Type-III Buck Converter with PSRR Improvement and EMI Suppression for Enhancing the Security of Edge Devices,” IEEE Transactions on Power Electronics (TPEL), vol. 37, no. 9 pp. 10070 - 10074, Sep. 2022. [link]

2021

21. Najam ul Hassan, Sung-Wan Hong*, and Byunghun Lee, “A Robust Multi-Output Self-Regulated Rectifier for Wirelessly-Powered Biomedical Applications,” IEEE Transactions on Industrial Electronics (TIE), vol. 68, no. 6, pp. 5466 - 5472, Jun. 2021. [link]

20. Woojoong Jung, Se-Un Shin, Sung-Wan Hong, Sung-Min Yoo, Tae-Hwang Kong, Jun-Hyeok Yang, Sang-Ho Kim, Michal Choi, Jongshin Shin, and Hyung-Min Lee, “Dual-Path Three-Level Buck Converter with Loop-Free Auto-Calibration for Flying Capacitor Self-Balancing,” IEEE Transactions on Power Electronics (TPEL), vol. 36, no. 10, pp. 51– 55, Jan. 2021. [link]

2020

19. Sung-Wan Hong, “A Resonant Current-Mode Wireless Power and Data Receiver for Loosely Coupled Implantable Devices,” IEEE J. Solid-State Circuits (JSSC), vol. 55, no. 12, pp. 3200 – 3209, Dec. 2020. [link]

18. Jieun Park, Byunghun Lee, and Sung-Wan Hong*, "An Output Capacitor-Less Low-Dropout Regulator with a Low-VDD Inverting Buffer for the Mobile Application," IEEE Transactions on Industrial Electronics (TIE), vol. 67, no. 10, pp. 8931 - 8935, Oct. 2020. [link]

17. Se-Un Shin, Sung-Wan Hong*, Hyung-Min Lee, and Gyu-Hyeong Cho, “High-Efficiency Hybrid Dual-Path Step-Up DC–DC Converter With Continuous Output-Current Delivery for Low Output Voltage Ripple,” IEEE Transactions on Power Eletronics (TPEL), vol. 35, no. 6, pp. 6025 – 6038, Jun. 2020. [link]

16. Jieun Park, Hyung-Min Lee, Se-Un Shin, Woong Choi, and Sung-Wan Hong*, "A 0.46mm2 On-Chip Compensated Type-III Buck Converter using an Inner Feedback Loop with a Seamless CCM/DCM Transition Technique," IEEE Transactions on Power Electronics (TPEL), vol. 35, no. 5, pp. 4477 – 4482, May. 2020. [link]

2019

15. Ki-Duk Kim, Hyung-Min Lee, Sung-Wan Hong, and Gyu-Hyeong Cho, "A Noninverting Buck-Boost Converter With State-Based Current Control for Li-ion Battery Management in Mobile Applications," IEEE Transactions on Industrial Electronics (TIE), vol. 66, no. 12, pp. 9623 - 9627, Dec. 2019. [link]

14. Sang-Han Lee, Jun-Suk Bang, Kye-Seok Yoon, Hui-Dong Gwon, Sang-Won Kim, In-Kui Cho, Sung-Wan Hong*, and Gyu-Hyeong Cho, "Voltage-Boosted Current-Mode Wireless Power Receiver for Directly Charging a Low-Voltage Battery in Implantable Medical Systems," IEEE Transactions on Industrial Electronics (TIE), vol. 66, no. 11, pp. 8860 - 8865, Nov. 2019. [link]

13. Se-Hong Park, Yeong-Hoon Sohn, Se-Un Shin, Sung-Wan Hong*, and Gyu-Hyeong Cho, "An Accurate and Practical Core Loss Analysis for Compact High Step-Up Converters," IEEE Transactions on Power Electronics (TPEL), vol. 34, no. 9, pp. 8368 - 8376, Sep. 2019. [link]

12. Yeunhee Huh, Sung-Wan Hong, and Gyu-Hyeong Cho, "A Hybrid Structure Dual-Path Step-Down Converter With 96.2% Peak Efficiency Using 250-m Ω Large-DCR Inductor," IEEE J. Solid-State Circuits (JSSC), vol. 54, no. 4, pp. 959 - 967, Apr. 2019. [link]

2018

11. Changsik Shin, Wonji Lee, Se-Won Lee, Sang-Han Lee, Jun-Suk Bang, Sung-Wan Hong*, and Gyu-Hyeong Cho, "Sine-Reference Band (SRB)-Controlled Average Current Technique for Phase-Cut Dimmable AC-DC Buck LED Lighting Driver without Electrolytic Capacitor," IEEE Transactions on Power Electronics (TPEL), vol. 33, no. 8, pp. 6994 - 7009, Aug. 2018. [link]

10. Kye-Seok Yoon, Sung-Wan Hong*, and Gyu-Hyeong Cho, “Double Pile-Up Resonance Energy Harvesting Circuit for Piezoelectric and Thermoelectric Materials,” IEEE J. Solid-State Circuits (JSSC), vol. 53, no. 4, pp. 1049 - 1060, Apr. 2018. [link]

9. Yeunhee Huh, Sung-Wan Hong*, Sang-Hui Park, Changsik Shin, Jun-Suk Bang, Changbyung Park, Sungsoo Park, and Gyu-Hyeong Cho, “A 10.1" 183 μW/electrode, 0.73 mm2/sensor High-SNR 3D Hover Sensor Based on Enhanced Signal Refining and Fine Error Calibrating Techniques,” IEEE J. Solid-State Circuits (JSSC), vol. 53, no. 4, pp. 1079 - 1088, Apr. 2018. [link]

8. Hui-Dong Gwon, Jun-Suk Bang, Kye-Seok Yoon, Se-Hong Park, Sang-Hui Park, Min-yong Jung, Sang-Han Lee, Min-Woo Kim, Sung-Wan Hong*, and Gyu-Hyeong Cho, "2-Phase 3-Level Envelope Tracking Supply Modulator with Mismatch-free Duty Cycles Achieving 88.6% Peak Efficiency for a 20MHz LTE RF Power Amplifier," IEEE Transactions on Power Electronics (TPEL), vol. 33, no. 4, pp. 2815 - 2819, Apr. 2018. [link]

2016

7. Si-Duk Sung, Sung-Wan Hong, Jun-Suk Bang, Ji-Seon Peak, Seung-Chul Lee, T. B. H. Cho, and Gyu-Hyeong Cho, “Envelope Modulator for 1.5W 10MHz LTE PA without AC Coupling Capacitor achieving 86.5% Peak Efficiency,” IEEE Transactions on Power Electronics (TPEL), vol. 31, no. 12, pp. 8282 – 8292, Dec. 2016. [link]

6. Sung-Wan Hong, and Gyu-Hyeong Cho, “A Pseudo Singe-Stage Amplifier with and Adaptively Varied Medium Impedance Node for Ultra-High Slew-Rate and Wide-Range Capacitive Load Drivability,” IEEE Transactions on Circuit and Systems I (TCAS-I), vol. 63, no. 10, pp. 1567 – 1578, Oct. 2016. [link]

5. Sung-Wan Hong, and Gyu-Hyeong Cho, “High-Gain Wide Bandwidth Capacitor-Less Low-Dropout Regulator (LDO) for Mobile Applications Utilizing Frequency Response of Multiple Feedback Loops,” IEEE Transactions on Circuit and Systems I (TCAS-I), vol. 63, no. 1, pp. 46 – 57, Jan. 2016. [link]

2015

4. Sung-Wan Hong, Sang-Hui Park, Tae-Hwang Kong, and Gyu-Hyeong Cho, “Inverting Buck-Boost DC-DC Converter for Mobile AMOLED Display Using Real-Time Self-Tuned Minimum Power-Loss Tracking (MPLT) Scheme With Lossless Soft-Switching for Discontinuous Conduction Mode,” IEEE J. Solid-State Circuits (JSSC), vol. 50, no. 10, pp. 2380 – 2393, Oct. 2015. [link]

2014

3. Tae-Hwang Kong, Sung-Wan Hong, and Gyu-Hyeong Cho, “A 0.791mm2 on-chip Self-Aligned Comparator Controller for Boost DC-DC Converter Using Switching Noise Robust Charge-Pump,” IEEE J. Solid-State Circuits (JSSC), vol. 49, no. 2, pp. 502 – 512, Feb. 2014. [link]

2013

2. Sung-Wan Hong, Tae-Hwang Kong, Sang-Hui Park, Changbyung Park, Seungchul Jung, Sungwoo Lee, and Gyu-Hyeong Cho, “High Area-Efficient DC-DC Converter With High Reliability Using Time-Mode Miller Compensation (TMMC),” IEEE J. Solid-State Circuits (JSSC), vol. 48, no. 10, pp. 2457 – 2468, Oct. 2013. [link]

1. Tae-Hwang Kong, Young-Jin Woo, Se-Won Wang, Yong-Jun Jeon, Sung-Wan Hong, and Gyu-Hyeong Cho, “Zeroth – Order Control of Boost DC-DC Converter With Transient Enhancement Scheme,” IEEE J. Solid-State Circuits (JSSC), vol. 48, no. 3, pp. 760 – 773, Mar. 2013. [link]