1. Title : DPIM: A 2T1C eDRAM Transformer-in-Memory Chip with Sparsity-Aware Quantization and Heterogeneous Dense-Sparse Core

Author : D. Kim, J.-Y. Kim, H. Cho, S. Yoo, S. Lee, S. Yune, S. Yang, H. Jeong, K. Park, K.-S. Lee, J. Lee, C. Han, Gunmo Koo, Yuli Han, Jaejin Kim, Jaemin Kim, K. Lee, J.-H. Chae, Kunhee Cho, Joo-Young Kim

Published in : IEEE Journal of Solid-State Circuits (JSSC), 2025, Accepted.

[Top-tier Journal in Circuit Designs]

2. Title : A 31.88A/mm2 Digital Power Delivery with Surrounding Pass-Gates Architecture Based on Directional-Selective Nested Quadrant Section Control in 28nm CMOS

Author : Wonae Park, Junyeop Kim, Yuli Han, Gunmo Koo, Joo-Young Kim, Kunhee Cho*

Published in : IEEE Asian Solid-State Circuits Conference (A-SSCC), November 2025

[Major Conference in Circuit Designs]

3. Title : A 36-65V Input Quadruple Step-Down Converter with Inherently Current-Matched Dual Inductors with 78mΩ DCR Achieving 90.6% Peak Efficiency

Author : Seunghoon Lee, Seungjin Baek, Seongil Yeo, Kunhee Cho*

Published in : IEEE Asian Solid-State Circuits Conference (A-SSCC), November 2025

[Major Conference in Circuit Designs]

4. Title : A 7.2W 96.6% Peak Efficiency Single-Stage Triple-Output Hybrid DC-DC Converter with Halved-VIN Switching and Autonomous Charge Recycling

Author : Jaemin Kim, Geuntae Park, Seongil Yeo, Kunhee Cho*

Published in : IEEE Asian Solid-State Circuits Conference (A-SSCC), November 2025

[Major Conference in Circuit Designs]

5. Title : A Switching-Inductor Hybrid Step-Down DC-DC Converter for Battery Charger Applications Implemented in CMOS Process

Author : Mina Shin, Seongil Yeo, Seunghoon Lee, and Kunhee Cho*

Published in : IEEE Transactions on Power Electronics (T-PEL), January 2026

[Top-tier Journal in Power Electronics]

6. Title : A Galvanically Isolated High Speed Switching Gate Driver for Low-to-Medium Voltage Wide-bandgap Semiconductor

Author : Sangin Choi, Hyunuk Jeong, Seunghoon Lee, Jaemin Kim, Chanjung Park, W. Jin, J. Kim, J. Kim, Kunhee Cho*

Published in : IEEE Asia Pacific Conference on Circuits and Systems (APCCAS), October 2025

7. Title : A Hybrid Step-Down DC-DC Converter for High Input-Voltage and High Voltage-Conversion-Ratio Applications

Author : Seunghoon Lee, Seungjin Baek, Seongil Yeo, Woojin Jang, Sungbeom Kim, Kunhee Cho*

Published in : IEEE Asia Pacific Conference on Circuits and Systems (APCCAS), October 2025

8. Title : A 12V-to-1-1.8V Multi-Path Hybrid Step-Down Converter Achieving 60% Reduction of Inductor Current

Author : Seungjin Baek, Seunghoon Lee, Kunhee Cho*

Published in : IEEE SoC Design Conference (ISOCC), October 2025

9. Title : Differential Injection Locked Frequency Divider with Dual Darlington Pairs for Wideband ÷4 Frequency Division in CMOS

Author : A. M. Rafli, M. F. Mauludin, S. Lee, Kunhee Cho, and J. Kim

Published in : IEEE ACCESS, vol. 13, pp. 127545 - 127557, 2025.

10. Title : A 9-72V Input to 1-2.2V Output Single-Inductor Multi-Path Multi-Stage Hybrid DC-DC Converter Achieving 87.8% Peak Efficiency with 110mΩ DCR Inductor

Author : Geuntae Park†, Yuli Han†, Seongil Yeo, Jusung Kim, Kunhee Cho* († : Equally contributed) 

Published in : IEEE European Solid-State Electronics Research Conference (ESSERC), September 2025

[Major Conference in Circuit Designs]

11. Title : A Flying-Capacitor-Assisted Single-Mode Buck-Boost Converter for Battery-Powered Applications

Author : S. Kim, T. Lee, Kunhee Cho*, and J. Han

Published in : IEEE Transactions on Very Large Scale Integration (T-VLSI), vol. 52, no. 10, pp. 1412 - 1416, May 2025

[Major Journal in Circuit Designs]

12. Title : A Compact Wide-Swing Self-Biased Cascode Current Mirror for Wide Dynamic-Range Applications

Author : Seongil Yeo, Jaejin Kim, Gunmo Koo, Kunhee Cho*

Published in : Journal of Semiconductor Technology and Science, vol. 25, no. 1, pp. 66 - 70, February 2025

1. Title : A 29.5W Switched-Capacitor Based Dual-Output Hybrid Secondary Charger Providing Simultaneous Two-Cell Battery Charging and System Supply Voltage with Input Current Limiting Feature

Author : Chanjung Park, Seongil Yeo, Jeu Lee, Geuntae Park, Seungjin Baek, Seunghoon Lee, Kunhee Cho*

Published in : IEEE Asian Solid-State Circuits Conference (A-SSCC), November 2024

[Major Conference in Circuit Designs]

2. Title : A DVS-Enabled Distributed Digital LDO Providing Rapid Uniform Power Grid and Ripple Reduction Achieving 20.1-ps FOM in 28nm CMOS

Author : Yuli Han, Jaemin Kim, Gunmo Koo, Jaejin Kim,  Jusung Kim, Joo-Young Kim, and Kunhee Cho*

Published in : IEEE Transactions on Circuits and Systems I : Regular Papers (TCAS-I), vol. 71, no. 11, pp. 5081 - 5090, November 2024

[Major Journal in Circuit Designs]

3. Title : A Ripple-Based Real-Time Built-In-Resistance Compensation for Switching Battery Charger Achieving Fast Charging

Author : Geuntae Park, Seongil Yeo, Chanjung Park, and Kunhee Cho*

Published in : IEEE Transactions on Circuits and Systems II : Express Briefs (TCAS-II), vol. 71, no. 11, pp. 4698 – 4702, November 2024

[Major Journal in Circuit Designs]

4. Title : Advanced Battery Charger Designs for Fast Battery Charging Technology

Author : Seongil Yeo, Chanjung Park, Geuntae Park, Jeonghyun Park, and Kunhee Cho*

Published in : IEEE International Conference on Consumer Electronics-Asia, November 2024

5. Title : A Ripple-Based Real-Time Built-In-Resistance Compensation for Switching Battery Charger Achieving Fast Charging

Author : Geuntae Park, Seongil Yeo, Chanjung Park, and Kunhee Cho*

Published in : IEEE International Symposium on Integrated Circuits and Systems, October 2024

6. Title : A DVS-Enabled Distributed Digital LDO Providing Rapid Uniform Power Grid and Ripple Reduction Achieving 20.1-ps FOM in 28nm CMOS

Author : Yuli Han, Jaemin Kim, Gunmo Koo, Jaejin Kim,  Jusung Kim, Joo-Young Kim, and Kunhee Cho*

Published in : IEEE International Symposium on Integrated Circuits and Systems, October 2024

7. Title : DPIM: A 19.36TOPS/W 2T1C eDRAM transformer-in-memory chip with sparsity-aware quantization and heterogeneous dense-sparse core

Author : D. Kim, J.-Y. Kim, H. Cho, S. Yoo, S. Lee, S. Yune, H. Jeong, K. Park, K.-S. Lee, J. Lee, C. Han, Gunmo Koo, Yuli Han, Jaejin Kim, Jaemin Kim, K. Lee, J.-H. Chae, Kunhee Cho, Joo-Young Kim

Published in : IEEE European Solid-State Electronics Research Conference (ESSERC), September 2024

[Major Conference in Circuit Designs]

8. Title : 34.8 dB Gain, 7.7 GHz Unity Gain Frequency, 4.2 mW Operational Transconductance Amplifier with Current Re-used Feed-Forward Technique

Author : A. Putri, A. M. Rafli, Kunhee Cho, and Jusung Kim 

Published in : IEEE SoC Design Conference (ISOCC), August 2024

9. Title : An Ultra-Wide Load-Range Fast-Transient Output Capacitor-Less Digital LDO with Adaptive Gate Modulation and Droop Detection

Author : Gunmo Koo†, Jaejin Kim†, Seongmin Lee, Jae Hoon Shim, and Kunhee Cho* († : Equally contributed) 

Published in : IEEE Solid-State Circuits Letter (SSC-L), vol. 7, pp. 199 - 202, June 2024

[Major Journal in Circuit Designs]

1. Title : An Output-Capacitor-Free NMOS Digital LDO using Gate Driving Strength Modulation and Droop Detector

Author : Jaejin Kim†, Gunmo Koo†, Seongmin Lee, Jae Hoon Shim, and Kunhee Cho* († : Equally contributed)

Published in : IEEE Transactions on Circuits and Systems I : Regular Papers (TCAS-I), vol. 70, no. 12, pp. 4975 - 4985, December 2023

[Major Journal in Circuit Designs]

2. Title : An Output-Capacitor-Free NMOS Digital LDO using Gate Driving Strength Modulation and Droop Detector

Author : Jaejin Kim†, Gunmo Koo†, Seongmin Lee, Jae Hoon Shim, and Kunhee Cho* († : Equally contributed)

Published in : IEEE International Symposium on Integrated Circuits and Systems, October 2023

3. Title : A 19.8W/29.6W Hybrid Step-Up/Down DC-DC Converter with 97.2% Peak Efficiency for 1-Cell/2-Cell Battery Charger Applications

Author : Seongil Yeo, Uyong Hyeon, Mingyeong Kim, Jusung Kim and Kunhee Cho*

Published in : IEEE Symposium on VLSI Technology and Circuits (VLSI), June 2023

[Top-tier Conference in Circuit Designs]

4. Title : An Output-Capacitor-Free Adaptive-Frequency Digital LDO with a 420-mA Load Current and a Fast Settling Time 

Author : D. Min, J. Lee, Kunhee Cho and J. Shim

Published in : IEEE International Symposium on Circuits and Systems (ISCAS), May 2023

5. Title : An 18–19.2 GHz Voltage-Controlled Oscillator with a Compact Varactor-Only Capacitor Array

Author : J. Kim, M. Mauludin, H. Azzahra, H. Jhon, S. Lee, and Kunhee Cho*

Published in : Electronics, vol. 12, no. 7, pp. 1 - 8, March 2023

6. Title : Averaged Switch Model for AC-to-DC LED Lighting Driver based on Peak Current Control

Author : Jaejin Kim, Gunmo Koo, Seongil Yeo, Jiyoung Kim, Jusung Kim and Kunhee Cho*

Published in : International Conference on Electronics, Information, and Communication (ICEIC), February 2023

1. Title : Inductive Power Transfer Link at 13.56 MHz for Leadless Cardiac Pacemakers

Author : K. Mohanarangam, Y. Palagani, Kunhee Cho, and Jun-Rim Choi

Published in : Energies, vol. 14, no. 17, pp. 1 - 13, September 2021

2. Title : A Supply Voltage Noise Immunity Enhancement Design for High-Voltage Gate Driver IC based on Bootstrap Circuit

Author : W. Jin, and Kunhee Cho*

Published in : IEEE Transactions on Circuits and Systems II : Express Briefs (TCAS-II), vol. 68, no. 9, pp. 3048 – 3052, September 2021

[Major Journal in Circuit Designs]

3. Title : Frequency-Locked RF Power Oscillator with 43-dBm Output Power and 58% Efficiency

Author : S. Lee, K. Jung, H. Kim, H. Nguyen, T. Nguyen, L. Nguyen, C. Huynh, Kunhee Cho, and Jusung Kim

Published in : IEEE Transactions on Very Large Scale Integration (T-VLSI) vol. 29, no. 4, pp. 739 - 746, April 2021

[Major Journal in Circuit Designs]

1. Title : A 20W Wide Bandwidth GaN HEMT Power Amplifier for VHF/UHF Applications

Author : Jusung Kim, Younghoon Kim, Sanghun Lee, Yongkook Park, Dong-Ho Lee, Kunhee Cho, Sungwon Oh, and Chi-Hyung Ahn

Published in : IEEE Transactions on Industrial Electronics (T-IE) vol. 67, no. 12, pp. 10905 - 10910, December 2020

[Top-tier Journal in Industrial Electronics]

2. Title : Low Voltage Time-Based Matrix Multiplier-and-Accumulator for Neural Computing System

Author : Sungjin Hong, Heechai Kang, Jusung Kim, and Kunhee Cho*

Published in : Electronics, vol. 9, no. 12, pp. 1 - 12, December 2020 

3. Title : An Ultra-Low Quiescent Current Under-Voltage Lockout Circuit for a High-Voltage Gate Driver IC 

Author : Kunhee Cho*

Published in : Electronics, vol. 9, no. 10, pp. 1 - 9, October 2020 

4. Title : A Temperature Compensated RF LC Clock Generator With ±50-ppm Frequency Accuracy From -40 °C to 80 °C

Author : Kisang Jung, Kunhee Cho, Sanghun Lee, Jusung Kim

Published in : IEEE Transactions On Microwave Theory and Techniques (T-MTT), vol. 67, no. 11, pp. 4441-4449, November 2019

[Major Journal in Circuit Designs]

5. Title : An Efficient Class-G Stage for Switching RF Power Amplifier Applications

Author : Kunhee Cho*, Ranjit Gharpurey

Published in : IEEE Transactions on Circuits and Systems II : Express Briefs (TCAS-II), vol. 66, no. 4, pp. 597 – 601, April 2019

[Major Journal in Circuit Designs]

6. Title : Design and Realization of Low-cost 10W Power Amplifier Module at 7.9-8.4GHz

Author : Chi-Hyung Ahn, Younghoon Kim, Sungwon Oh, Yeonjun Noh, Dong-Ho Lee, Sanghun Lee, Kunhee Cho, and Jusung Kim

Published in : IEICE Electronics Express, vol. 15, no. 19, pp. 1 - 9, October 2018.

7. Title : An Efficient Buck/Buck-Boost Reconfigurable LED Driver Employing SIN2 Reference

Author : Kunhee Cho*, Ranjit Gharpurey

Published in : IEEE Journal of Solid-State Circuits (JSSC), vol. 52, no. 10, pp. 2758 - 2768, Oct. 2017

[Top-tier Journal in Circuit Designs]

8. Title : A 40-170 MHz PLL-based PWM Driver using 2-/3-/5-level Class-D PA in 130 nm CMOS

Author : Kunhee Cho*, Ranjit Gharpurey

Published in : IEEE Journal of Solid-State Circuits (JSSC), vol. 51, no. 11, pp. 2639 - 2650, Nov. 2016

[Top-tier Journal in Circuit Designs]

9. Title : A Full-Duplex Transceiver Front-end Employing Inverse Class-D Power Amplifiers

Author : Wei-gi Ho, Vineet Singh, Kunhee Cho, Rangakrishnan Srinivasan, Ranjit Gharpurey

Published in : IEEE Dallas Circuit and System Conferences (DCAS), October 2016

10. Title : A Digitally Intensive Transmitter/PA using RF-PWM with Carrier Switching in 130 nm CMOS

Author : Kunhee Cho*, Ranjit Gharpurey

Published in : IEEE Journal of Solid-State Circuits (JSSC), vol. 51, no. 5, pp. 1188 - 1199, May 201 

[Top-tier Journal in Circuit Designs]

11. Title : A 25.6 dBm Wireless Transmitter using RF-PWM with Carrier Switching in 130-nm CMOS

Author : Kunhee Cho, Ranjit Gharpurey

Published in : IEEE Radio Frequency Integrated Circuits Symposium (RFIC), May 2015

[Major Conference in Circuit Designs]

12. Title : A Leakage Reduced HVIC with Coarse-Fine UVLO

Author : Sungpah Lee, Kunhee Cho, Minwoo Lee, and Wookang Jin

Published in : IEEE International SOC Conference (ISOCC), November 2012

13. Title : A High Voltage Half Bridge Gate Driver with Mismatch-Insensitive Dead-Time Generator

Author : Kunhee Cho*, Sungpah Lee, Duckki Kwon

Published in : IEICE Electronics Express, vol. 9, no. 16, pp. 1322 - 1328, August 2012

14. Title : An Automatic Channel Selectable Smart LED Backlight Driver IC for Various Scaled-Size LCDs

Author : Younwoong Chung, Dongjin Park, Kunhee Cho, Jinhwa Chung, Gunsang Lee and Donghye Cho

Published in : the Society for Information Display (SID), June 2012, pp. 1198 - 1200

15. Title : A Simple LED Lamp Driver IC Using Intelligent Power Factor Correction

Author : J. Hwang, Kunhee Cho, D. Kim, M. Jung, G. Cho, S. Yang [Presenter : Kunhee Cho]

Published in : IEEE International Solid State Circuits Conference (ISSCC), Feb. 2011, pp. 236 - 237

[Top-tier Conference in Circuit Designs]

16. Title : Sub-1V CMOS Image Sensor Using Time-Based Readout Circuit

Author : Kunhee Cho*, Dongmyung Lee, Jeonghwan Lee, and Gunhee Han

Published in : IEEE Transactions. on Electron Devices (T-ED), vol. 57, no. 1, pp. 222 - 227, January 2010

[Major Journal in Electron Devices]

17. Title : A 0.75V CMOS Image Sensor Using Time-Based Readout Circuit

Author : Kunhee Cho, Dongmyung Lee, Jeonghwan Lee and Gunhee Han

Published in : IEEE Symposium on VLSI Technology and Circuits (VLSI), June 2009, pp. 178 - 179

[Top-tier Conference in Circuit Designs]

18. Title : Low Noise In-Pixel Comparing Active Pixel Sensor using Column-Level Single-Slope ADC

Author : Dongmyung Lee, Kunhee Cho, Dongsoo Kim and Gunhee Han

Published in : IEEE Transactions on Electron Devices (T-ED), vol. 55, no. 12, pp. 3383 - 3388, December 2008

[Major Journal in Electron Devices]

19. Title : Low Voltage Time Based CMOS Active Pixel Sensor

Author : Kunhee Cho, Dongmyung Lee, and Gunhee Han

Published in : IEEE International SOC Conference (ISOCC), November 2008, pp. 97 - 100

• 1. D. Kim, J.-Y. Kim, H. Cho, S. Yoo, S. Lee, S. Yune, S. Yang, H. Jeong, K. Park, K.-S. Lee, J. Lee, C. Han, Gunmo Koo, Yuli Han, Jaejin Kim, Jaemin Kim, K. Lee, J.-H. Chae, Kunhee Cho, Joo-Young Kim, "A 2T1C eDRAM Transformer-in-Memory Chip with Sparsity-Aware Quantization and Heterogeneous Dense-Sparse Core," IEEE Journal of Solid-State Circuits (JSSC), 2025, Accepted.

  2. Mina Shin, Seongil Yeo, Seunghoon Lee, Kunhee Cho*, “A Switching-Inductor Hybrid Step-Down DC-DC Converter for Battery Charger Applications Implemented in CMOS Process,” IEEE Transactions on Power Electronics (T-PE), vol. 41, no. 1, pp. 97-102, Jan. 2026.

  3. A. M. Rafli, M. F. Mauludin, S. Lee, Kunhee Cho, and J. Kim, “Differential Injection Locked Frequency Divider with Dual Darlington Pairs for Wideband ÷4 Frequency Division in CMOS,” IEEE ACCESS, vol. 13, pp. 127545 - 127557, 2025.

  4. S. Kim, T. Lee, Kunhee Cho*, and J. Han, “A Flying-Capacitor-Assisted Single-Mode Buck-Boost Converter for Battery-Powered Applications,” IEEE Transactions on Very Large Scale Integr. (T-VLSI), vol. 52, no. 10, pp. 1412 - 1416, May 2025.

  5. Seongil Yeo, Jaejin Kim, Gunmo Koo, Kunhee Cho*, "A Compact Wide-Swing Self-Biased Cascode Current Mirror for Wide Dynamic-Range Applications," Journal of Semiconductor Technology and Science, vol. 25, no. 1, pp. 66-70, Feb. 2025.

  6. Geuntae Park, Seongil Yeo, Chanjung Park, and Kunhee Cho*, "A Ripple-Based Real-Time Built-In-Resistance Compensation for Switching Battery Charger Achieving Fast Charging," IEEE Transactions on Circuits and Systems II: Express Briefs (T-CAS II), vol. 71, no. 11, pp. 4698-4702, Nov. 2024.

  7. Yuli Han, Jaemin Kim, Gunmo Koo, Jaejin Kim,  Jusung Kim, Joo-Young Kim, and Kunhee Cho*, "A DVS-Enabled Distributed Digital LDO Providing Rapid Uniform Power Grid and Ripple Reduction Achieving 20.1-ps FOM in 28nm CMOS," IEEE Transactions on Circuits and Systems I: Regular Papers (T-CAS I), vol. 71, no. 11, pp. 5081-5090, Nov. 2024.

  8. Gunmo Koo†, Jaejin Kim†, Seongmin Lee, Jae Hoon Shim, and Kunhee Cho*, "An Ultra-Wide Load-Range Fast-Transient Output Capacitor-Less Digital LDO with Adaptive Gate Modulation and Droop Detection," IEEE Solid-State Circuits Letters (SSC-L), vol. 7, pp. 199-202, 2024. († : Equally contributed)

  9. Jaejin Kim†, Gunmo Koo†, Seongmin Lee, Jae Hoon Shim, and Kunhee Cho*, "An Output-Capacitor-Free NMOS Digital LDO using Gate Driving Strength Modulation and Droop Detector," IEEE Transactions on Circuits and Systems I: Regular Papers (T-CAS I), vol. 70, no. 12, pp. 4975-4985, Dec. 2023. († : Equally contributed)

  10. J. Kim, M. Mauludin, H. Azzahra, H. Jhon, S. Lee, and Kunhee Cho*, "An 18–19.2 GHz Voltage-Controlled Oscillator with a Compact Varactor-Only Capacitor Array," Electronics, vol. 12, no. 7, pp. 1–8, Mar. 2023.

  11. K. Mohanarangam, Y. Palagani, Kunhee Cho, and Jun-Rim Choi, "Inductive Power Transfer Link at 13.56 MHz for Leadless Cardiac Pacemakers," Energies, vol. 14, no. 17, pp. 1-13, Sep. 2021.

  12. W. Jin, and Kunhee Cho*, "A Supply Voltage Noise Immunity Enhancement Design for High-Voltage Gate Driver IC based on Bootstrap Circuit," IEEE Transactions on Circuits and Systems II: Express Briefs (T-CAS II), vol. 68, no. 9, pp. 3048-3052, Sep. 2021.

  13. S. Lee, K. Jung, H. Kim, H. Nguyen, T. Nguyen, L. Nguyen, C. Huynh, Kunhee Cho, and Jusung Kim, “Frequency-Locked RF Power Oscillator with 43-dBm Output Power and 58% Efficiency,” IEEE Transactions on VLSI Systems (T-VLSI), vol. 29, no. 4, pp. 739-746, Apr. 2021.

  14. Jusung Kim, Younghoon Kim, Sanghun Lee, Yongkook Park, Dong-Ho Lee, Kunhee Cho, Sungwon Oh, and Chi-Hyung Ahn, "A 20W Wide Bandwidth GaN HEMT Power Amplifier for VHF/UHF Applications," IEEE Transactions On Industrial Electronics (T-IE), vol. 67, no. 12, pp. 10905-10910, Dec. 2020.

  15. Sungjin Hong, Heechai Kang, Jusung Kim, and Kunhee Cho*, "Low Voltage Time-Based Matrix Multiplier-and-Accumulator for Neural Computing System,” Electronics, vol. 9, no. 12, pp. 1-12, Dec. 2020.

  16. Kunhee Cho*, "An Ultra-Low Quiescent Current Under-Voltage Lockout Circuit for a High-Voltage Gate Driver IC," Electronics, vol. 9, no. 10, pp. 1-9, Oct. 2020. 

  17. Kisang Jung, Kunhee Cho, Sanghun Lee, Jusung Kim, "A Temperature Compensated RF LC Clock Generator With ±50-ppm Frequency Accuracy From -40 °C to 80 °C," IEEE Transactions On Microwave Theory and Techniques (T-MTT), vol. 67, no. 11, pp. 4441-4449, Nov. 2019.

  18. Kunhee Cho*, Ranjit Gharpurey, “An Efficient Class-G Stage for Switching RF Power Amplifier Applications,” IEEE Transactions on Circuits and Systems II: Express Briefs (T-CAS II), vol. 66, no. 4, pp. 597-601, Apr. 2019.

  19. Chi-Hyung Ahn, Younghoon Kim, Sungwon Oh, Yeonjun Noh, Dong-Ho Lee, Sanghun Lee, Kunhee Cho, and Jusung Kim, “Design and Realization of Low-cost 10W Power Amplifier Module at 7.9-8.4GHz,” IEICE Electronics Express, vol. 15, no. 19, pp. 1-9, Oct. 2018.

  20. Kunhee Cho*, Ranjit Gharpurey, “An Efficient Buck/Buck-Boost Reconfigurable LED Driver Employing SIN2 Reference,” IEEE J. Solid-State Circuits (JSSC), vol. 52, no. 10, pp. 2758-2768, Oct. 2017.

  21. Kunhee Cho*, Ranjit Gharpurey, “A 40-170 MHz PLL-based PWM Driver using 2-/3-/5-level Class-D PA in 130 nm CMOS,” IEEE J. Solid-State Circuits (JSSC), vol. 51, no. 11, pp. 2639-2650, Nov. 2016.

  22. Kunhee Cho*, Ranjit Gharpurey, “A Digitally Intensive Transmitter/PA using RF-PWM with Carrier Switching in 130 nm CMOS,” IEEE J. Solid-State Circuits (JSSC), vol. 51, no. 5, pp. 1188-1199, May 2016.

  23. Kunhee Cho*, Sungpah Lee, Duckki Kwon, “A High Voltage Half Bridge Gate Driver with Mismatch-Insensitive Dead-Time Generator,” IEICE Electronics Express, vol. 9, no. 16, pp. 1322-1328, Aug. 2012.

  24. Kunhee Cho*, Dongmyung Lee, Jeonghwan Lee, and Gunhee Han, “Sub-1V CMOS Image Sensor Using Time-Based Readout Circuit,” IEEE Trans. on Electron Devices (T-ED), vol. 57, no. 1, pp. 222-227, Jan. 2010.

  25. Dongmyung Lee, Kunhee Cho, Dongsoo Kim and Gunhee Han, “Low Noise In-Pixel Comparing Active Pixel Sensor using Column-Level Single-Slope ADC,” IEEE Trans. on Electron Devices (T-ED), vol. 55, no. 12, pp. 3383-3388, Dec. 2008 

• 1. Wonae Park, Junyeop Kim, Yuli Han, Gunmo Koo, Joo-Young Kim, Kunhee Cho*, "A 31.88A/mm2 Digital Power Delivery with Surrounding Pass-Gates Architecture Based on Directional-Selective Nested Quadrant Section Control in 28nm CMOS," IEEE Asian Solid-State Circuits Conference (A-SSCC), Nov. 2025, Accepted.

  2. Seunghoon Lee, Seungjin Baek, Seongil Yeo, Kunhee Cho*, "A 36-65V Input Quadruple Step-Down Converter with Inherently Current-Matched Dual Inductors with 78mΩ DCR Achieving 90.6% Peak Efficiency," IEEE Asian Solid-State Circuits Conference (A-SSCC), Nov. 2025, Accepted.

  3. Jaemin Kim, Geuntae Park, Seongil Yeo, Kunhee Cho*, "A 7.2W 96.6% Peak Efficiency Single-Stage Triple-Output Hybrid DC-DC Converter with Halved-VIN Switching and Autonomous Charge Recycling," IEEE Asian Solid-State Circuits Conference (A-SSCC), Nov. 2025, Accepted.

  4. Sangin Choi, Hyunuk Jeong, Seunghoon Lee, Jaemin Kim, Chanjung Park, W. Jin, J. Kim, J. Kim, Kunhee Cho*, "A Galvanically Isolated High Speed Switching Gate Driver for Low-to-Medium Voltage Wide-bandgap Semiconductor," IEEE Asia Pacific Conference on Circuits and Systems (APCCAS), Oct. 2025, Accepted.

  5. Seunghoon Lee, Seungjin Baek, Seongil Yeo, Woojin Jang, Sungbeom Kim, Kunhee Cho*, "A Hybrid Step-Down DC-DC Converter for High Input-Voltage and High Voltage-Conversion-Ratio Applications," IEEE Asia Pacific Conference on Circuits and Systems (APCCAS), Oct. 2025, Accepted

  6. Seungjin Baek, Seunghoon Lee, Kunhee Cho*, "A 12V-to-1-1.8V Multi-Path Hybrid Step-Down Converter Achieving 60% Reduction of Inductor Current," IEEE International SoC Design Conference (ISOCC), Oct. 2025, Accepted.

  7. Geuntae Park†, Yuli Han†, Seongil Yeo, Jusung Kim, Kunhee Cho*, "A 9-72V Input to 1-2.2V Output Single-Inductor Multi-Path Multi-Stage Hybrid DC-DC Converter Achieving 87.8% Peak Efficiency with 110mΩ DCR Inductor," in Proc. IEEE European Solid-State Electronics Research Conference (ESSERC), Sep. 2025, Accepted. († : Equally contributed)

  8. Chanjung Park, Seongil Yeo, Jeu Lee, Geuntae Park, Seungjin Baek, Seunghoon Lee, Kunhee Cho*, "A 29.5W Switched-Capacitor Based Dual-Output Hybrid Secondary Charger Providing Simultaneous Two-Cell Battery Charging and System Supply Voltage with Input Current Limiting Feature," IEEE Asian Solid-State Circuits Conference (A-SSCC), Nov. 2024.

  9. Seongil Yeo, Chanjung Park, Geuntae Park, Jeonghyun Park, and Kunhee Cho*, "Advanced Battery Charger Designs for Fast Battery Charging Technology," IEEE International Conference on Consumer Electronics-Asia, Nov. 2024.

  10. Geuntae Park, Seongil Yeo, Chanjung Park, and Kunhee Cho*, "A Ripple-Based Real-Time Built-In-Resistance Compensation for Switching Battery Charger Achieving Fast Charging," in Proc. IEEE International Symposium on Integrated Circuits and Systems, Oct. 2024.

  11. Yuli Han, Jaemin Kim, Gunmo Koo, Jaejin Kim,  Jusung Kim, Joo-Young Kim, and Kunhee Cho*, "A DVS-Enabled Distributed Digital LDO Providing Rapid Uniform Power Grid and Ripple Reduction Achieving 20.1-ps FOM in 28nm CMOS," in Proc. IEEE International Symposium on Integrated Circuits and Systems, Oct. 2024.

  12. D. Kim, J.-Y. Kim, H. Cho, S. Yoo, S. Lee, S. Yune, H. Jeong, K. Park, K.-S. Lee, J. Lee, C. Han, Gunmo Koo, Yuli Han, Jaejin Kim, Jaemin Kim, K. Lee, J.-H. Chae, Kunhee Cho, Joo-Young Kim, "DPIM: A 19.36TOPS/W 2T1C eDRAM transformer-in-memory chip with sparsity-aware quantization and heterogeneous dense-sparse core," in Proc. IEEE European Solid-State Electronics Research Conference (ESSERC), Sep. 2024.

  13. A. Putri, A. M. Rafli, Kunhee Cho, and J. Kim, “34.8 dB Gain, 7.7 GHz Unity Gain Frequency, 4.2 mW Operational Transconductance Amplifier with Current Re-used Feed-Forward Technique,” IEEE International SoC Design Conference (ISOCC), Aug. 2024. 

  14. Jaejin Kim†, Gunmo Koo†, Seongmin Lee, Jae Hoon Shim, and Kunhee Cho*, "An Output-Capacitor-Free NMOS Digital LDO using Gate Driving Strength Modulation and Droop Detector,"  in Proc. IEEE International Symposium on Integrated Circuits and Systems, Oct. 2023. († : Equally contributed)

  15. Seongil Yeo, Uyong Hyeon, Mingyeong Kim, Jusung Kim and Kunhee Cho, "A 19.8W/29.6W Hybrid Step-Up/Down DC-DC Converter with 97.2% Peak Efficiency for 1-Cell/2-Cell Battery Charger Applications," in Proc. IEEE Symposium on VLSI Technology and Circuits (VLSI), Jun. 2023.

  16. D. Min, J. Lee, Kunhee Cho and J. Shim. "An Output-Capacitor-Free Adaptive-Frequency Digital LDO with a 420-mA Load Current and a Fast Settling Time," in Proc.  IEEE International Symposium on Circuits and Systems (ISCAS), May, 2023.

  17. Jaejin Kim, Gunmo Koo, Seongil Yeo, Jiyoung Kim, Jusung Kim and Kunhee Cho, "Averaged Switch Model for AC-to-DC LED Lighting Driver based on Peak Current Control," in Proc. International Conference on Electronics, Information, and Communication (ICEIC), Feb. 2023.

  18. Wei-gi Ho, Vineet Singh, Kunhee Cho, Rangakrishnan Srinivasan, Ranjit Gharpurey, “A Full-Duplex Transceiver Front-end Employing Inverse Class-D Power Amplifiers,” in IEEE Dallas Circuit and System Conferences (DCAS), Oct. 2016, pp. 1-4.

  19. Kunhee Cho and Ranjit Gharpurey, “A 25.6 dBm Wireless Transmitter using RF-PWM with Carrier Switching in 130-nm CMOS,” in IEEE RFIC Symp. (RFIC), May 2015, pp. 139 – 142.

  20. Sungpah Lee, Kunhee Cho, Minwoo Lee, and Wookang Jin, “A Leakage Reduced HVIC with Coarse-Fine UVLO,” in Proc. IEEE International SOC Conference (ISOCC), Nov. 2012, pp. 408-411.

  21. Younwoong Chung, Dongjin Park, Kunhee Cho, Jinhwa Chung, Gunsang Lee and Donghye Cho, “An Automatic Channel Selectable Smart LED Backlight Driver IC for Various Scaled-Size LCDs,” the Society for Information Display (SID), Jun. 2012, pp. 1198-1200.

  22. Jong Tae Hwang, Kunhee Cho, Donghwan Kim, Minho Jung, Gyehyun Cho, Seunguk Yang, “A Simple LED Lamp Driver IC Using Intelligent Power Factor Correction,” in Proc. IEEE International Solid State Circuits Conference (ISSCC), Feb. 2011, pp. 236-237. [Presenter : Kunhee Cho]

  23. Kunhee Cho, Dongmyung Lee, Jeonghwan Lee and Gunhee Han, “A 0.75V CMOS Image Sensor Using Time-Based Readout Circuit,” in Proc. IEEE Symp. on VLSI Circuits (VLSI), Jun. 2009, pp.178-179.

  24. Kunhee Cho, Dongmyung Lee, and Gunhee Han, “Low Voltage Time Based CMOS Active Pixel Sensor,” in Proc. IEEE International SOC Conference (ISOCC), Nov. 2008, pp.97-100.

• 1. Buck converter including inductor current sensing via high- and low-side switching device current sensing (US Publication # : US20210067041A1)

  2. Input current limiting and input over current protection for power converters (US Publication # : US20190386481A1)

  3. Set point adjuster for oscillator driver (US Patent # : US10069501B2)

  4. Temperature compensated oscillator driver (US Patent # : US11005419B2)

  5. Clock signal generating circuit and power supply including the same (US Patent # : US8841960B2)

  6. Driver and high voltage drive circuit including same (US Patent # : US8519747B2)

  7. Switch control device (US Patent # : US8648644B2)

  8. Pulse width filter (US Patent # : US8598911B2)

  9. CMOS image sensor and image signal detecting method (US Patent # : US8432471B2)

  10.  Method for resetting time-based CMOS image sensor (US Patent # : US8203639B2)

  11. 제어 장치, 제어 방법, 및 이를 이용하는 디지털 DC-DC 컨버터 (등록번호 : 1019448770000)

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  14. 구동기 및 이를 구비하는 고전압 구동 회로 (등록번호 : 1017139930000)

  15. 펄스 폭 필터 (등록번호 : 1016582110000)

  16. 씨모스 이미지 센서 및 그것의 영상 신호 검출 방법 (등록번호 : 1016058310000)

  17. 시간기반 씨모스 이미지 센서와 그 리셋 방법 및 이를포함하는 구동 방법 (등록번호 : 1009116530000)