Journal Papers
Book Chapter
[02] B. Lee and H.-M. Lee, "Wireless Applications: Biomedical Signals Telemetry System," in Handbook of Biochips: Integrated Circuits and Systems for Biology and Medicine, Ed. M. Sawan, Ch. 44, Springer, Feb. 2022.
[01] H.-M. Lee and M. Ghovanloo, "Energy Management Integrated Circuits for Wireless Power Transmission," in Implantable Biomedical Microsystems, Ed. S. Bhunia, Ch. 5, Elsevier Science & Technology, Feb. 2015.
Journal Papers (International)
<2024>
[55] K. Eom and H.-M. Lee, "An Average Amplitude Regulation Scheme for Ambient Illuminance Adaptation in Retinal Prosthesis," IEEE Solid-State Circuits Letters, accepted.
[54] M. Um, M. Kang, K. Eom, H. Kwak, K. Noh, J. Lee, J. Son, J. Kwon, S. Kim, and H.-M. Lee, "A Multi-bit ECRAM-Based Analog Neuromorphic System with High-Precision Current Readout Achieving 97.3% Inference Accuracy," IEEE Transactions on Biomedical Circuits and Systems, accepted.
[53] K. Eom, H.-S. Lee, M. Park, S. M. Yang, J. C. Choe, S.-W. Hwang, Y.-W. Suh, and H.-M. Lee, "Development of Ocular Muscle Stimulation Systems and Optimization of Electrical Stimulus Parameters for Paralytic Strabismus Treatment," IEEE Transactions on Biomedical Engineering, accepted.
[52] J. Ahn, H.-S. Lee, K. Eom, W. Jung, and H.-M. Lee, "A 13.56-MHz 93.5%-Efficiency Optimal On/Off Timing Tracking Active Rectifier with Digital Feedback-Based Adaptive Delay Control," IEEE Transactions on Biomedical Circuits and Systems, accepted.
[51] S.-B. Ku, J. Kim, K. Lee, H.-S. Lee, K. Eom, M. Park, C. Cha, and H.-M. Lee, "An RF MEMS Sensor Driver/Readout SoC with Resonant Frequency Shift and Closed-Loop Envelope Regulation for Portable Microplastic Detection," IEEE Journal of Solid-State Circuits, accepted.
[50] W. Jung, H. Park, M. Kim, H.-P. Le, H. Jin, J.-P. Hong, Y.-J. Woo, and H.-M. Lee, "A Scalable Distributed Linear Regulator with 99.5%-Accuracy Replica-based Current Sharing Calibration for Automotive Applications," IEEE Transactions on Industrial Electronics, accepted.
[49] H.-S. Lee and H.-M. Lee, "A Power-Efficient Envelope-Detector-Less Amplitude-Shift-Keying Forward Telemetry for Wirelessly Powered Biomedical Devices," IEEE Transactions on Biomedical Circuits and Systems, accepted.
[48] H. Jo, M. Kang, M. Um, J. Kim, K.-W. Kwon, S. Kim, and H.-M. Lee, "Verification of Neuromorphic Processing Accuracy against Non-Ideal Errors in Synapse-based Neural Network Systems," International Journal of Circuit Theory and Applications, accepted.
[47] H.-S. Lee and H.-M. Lee, "A 92.7%-Efficiency 6.78-MHz Energy- Resuscitating Resonant Regulating Rectifier with Dual Outputs for Wirelessly Powered Devices," IEEE Journal of Solid-State Circuits, vol. 59, no. 10, Oct. 2024.
[46] K. Noh, H. Kwak, J. Son, S. Kim, M. Um, M. Kang, D. Kim, W. Ji, J. Lee, H. Jo, J. Woo, H.-M. Lee, and S. Kim, "Retention-Aware Zero-Shifting Technique for Tiki-Taka Algorithm-Based Analog Deep Learning Accelerator," Science Advances, vol. 10, no. 24, Jun. 2024.
[45] W. Jung, H. Park, M. Kim, and H.-M. Lee, "A 94.9% Efficiency Always-Power-Delivered SIDO Buck Converter with Continuous Current Balancing and Complementary Adaptive-Switching Regulation," IEEE Journal of Solid-State Circuits, vol. 59, no. 6, pp. 1759-1770, Jun. 2024.
[44] J. Song, M. Kim, H. Park, W. Jung, Y. Ahn, T. Nam, Y. Shin, Y.-J. Woo, and H.-M. Lee, "A 96.3%-Efficiency Wide-Voltage-Range Three-Level Boost Converter with Loop-Free Self-Balancing and Dead-Zone PWM Control for Backlight LED Drivers," IEEE Transactions on Power Electronics, vol. 39, no. 6, pp. 7064-7075, Jun. 2024.
[43] K. Eom, H.-S. Lee, M. Park, S. M. Yang, J. C. Choe, S.-W. Hwang, Y.-W. Suh, and H.-M. Lee, "A 92%-Efficiency Inductor-Charging Switched-Capacitor Stimulation System with Level-Adaptive Duty Modulation and Offset Charge Balancing," IEEE Journal of Solid-State Circuits, vol. 59, no. 5, pp. 1521-1531, May 2024.
[42] D. Kim, H. Roh, H.-M. Lee, S. J. Kim, and M. Im, "Localization of hyperpolarization-activated cyclic nucleotide-gated channels in the vertebrate retinas across species and their physiological roles," Frontiers in Neuroanatomy, vol. 18, Mar. 2024.
[41] M. Park, K. Eom, H.-S. Lee, S.-B. Ku, and H.-M. Lee, "A 9-V-Tolerant Stacked-Switched-Capacitor Stimulation System with Level-Adaptive Switch Control and Rapid Stimulus-Synchronized Charge Balancing for Implantable Devices," IEEE Journal of Solid-State Circuits, vol. 59, no. 3, pp. 817-829, Mar. 2024.
[40] W. Jung, M. Kim, H. Park, S.-M. Yoo, J.-H. Yang, M. Choi, J. Shin, and H.-M. Lee, "A 95.4% Hybrid Always-Dual-Path Recursive Step-Down Converter Using Adaptive Switching Level Control with 288mΩ Large-DCR Inductor," IEEE Transactions on Power Electronics, vol. 39, no. 2, pp. 2258-2269, Feb. 2024.
[39] D. Kim, H. Park, I. Yeo, Y. K. Lee, Y. Kim, H.-M. Lee, and K.-W. Kwon, "Rowhammer Attacks in Dynamic Random-Access Memory and Defense Methods," Sensors, vol. 24, no. 2, Jan. 2024.
<2023>
[38] K. Eom, M. Park, H.-S. Lee, S.-B. Ku, N. Kim, S. Cha, Y. S. Goo, S. Kim, S.-W. Kim, and H.-M. Lee, "A Low-Stimulus-Scattering Pixel-Sharing Sub-Retinal Prosthesis SoC with Time-Based Photodiode Sensing and Per-Pixel Dynamic Voltage Scaling," IEEE Journal of Solid-State Circuits, vol. 58, no. 11, pp. 2976-2989, Nov. 2023.
[37] D. Lee, S. Lee, M. Cho, H.-M. Lee, and Y. Kim, "Security Problems of Latest FPGAs and Reverse Engineering Methods of Xilinx 7-series FPGAs," Journal of Semiconductor Technology and Science, vol. 23, no. 5, pp. 283-294, Oct. 2023.
[36] J. Won, J. Kang, S. Hong, N. Han, M. Kang, Y. Park, Y. Roh, H. Seo, C. Joe, U. Cho, M. Kang, M. Um, K.-H. Lee, J.-E. Yang, M. Jung, H.-M. Lee, S. Oh, S. Kim, and S. Kim, "Device-Algorithm Co-Optimization for an On-Chip Trainable Capacitor-Based Synaptic Device with IGZO TFT and Retention-Centric Tiki-Taka Algorithm," Advanced Science, vol. 10, no. 29, Oct. 2023.
[35] H. Park, W. Jung, M. Kim, and H.-M. Lee, "A Wide-Load-Range and High-Slew Capacitor-Less NMOS LDO with Adaptive-Gain Nested Miller Compensation and Pre-Emphasis Inverse Biasing," IEEE Journal of Solid-State Circuits, vol. 58, no. 10, pp. 2696-2708, Oct. 2023.
[34] K.-H. Lee, J.-H. Kim, K.-S. Shin, C.-U. Cha, and H.-M. Lee, "Complementary Multisplit Ring Resonant MEMS Sensor With Microfilter for Microplastics Concentration Measurement," IEEE Sensors Journal, vol. 23, no. 17, pp. 19105-19116, Sep. 2023.
[33] Y. Lee, W. Jung, S.-M. Yoo, T.-H. Kong, J.-H. Yang, M. Choi, J. Shin, and H.-M. Lee, "A High-Efficiency High-Voltage-Tolerant Buck Converter with Inductor Current Emulator for Battery-Powered IoT Devices," IEEE Transactions on Power Electronics, vol. 38, no. 9, pp. 10917-10932, Sep. 2023.
[32] H.-S. Lee, K. Eom, M. Park, S.-B. Ku, K. Lee, T. Kim, T. Kim, Y.-M. Shon, H. Park, and H.-M. Lee, "A Multi-channel Neural Recording System with Neural Spike Scan and Adaptive Electrode Selection for High-density Neural Interface," IEEE Transactions on Circuits and Systems I, vol. 70, no. 7, pp. 2844-2857, Jul. 2023.
[31] M. Um and H.-M. Lee, "A Fault-Tolerant Current-Starved Ring Oscillator with Signal-Flip Protection Delay Cells against Radiation Effects," IEEE Transactions on Circuits and Systems II, vol. 70, no. 3, pp. 880-884, Mar. 2023.
[30] M. Kim, H. Lee, J. Ahn, and H.-M. Lee, "A 13.56-MHz Wireless Power and Data Transfer System with Current-Modulated Energy-Reuse Back Telemetry and Energy-Adaptive Voltage Regulation," IEEE Journal of Solid-State Circuits, vol. 58, no. 2, pp. 400-410, Feb. 2023.
[29] H. Park, W. Jung, M. Kim, S. Kim, H. Lee, S. Kim, J. Lee, and H.-M. Lee, "A 0.3V-VIN, 0.015ps-FoM Fully Integrated Analog-Assisted Digital LDO with Dual-Negative Gate Control and Adaptive Transient Recovery Path," IEEE Transactions on Power Electronics, vol. 38, no. 1, pp. 85-89, Jan. 2023.
<2022>
[28] H.-S. Lee, J. Ahn, M. Kang, and H.-M. Lee, "A Load-Insensitive Hybrid LSK Back Telemetry System with Slope-Based Demodulation for Inductively Powered Biomedical Devices," IEEE Transactions on Biomedical Circuits and Systems, vol. 16, no. 4, pp. 651-663, Aug. 2022.
[27] H.-S. Lee, K. Eom, M. Park, S.-B. Ku, K. Lee, and H.-M. Lee, "High-Density Neural Recording System Design," Biomedical Engineering Letters, vol. 12, no. 3, Aug. 2022.
[26] K.-D. Kim, S. Park, B. Lee, H.-M. Lee, and G.-H. Cho, "A 80x60 Microbolometer CMOS Thermal Imager Integrated With a Low-Noise 12-B DAC," IEEE Transactions on Industrial Electronics, vol. 69, no. 8, pp. 8604-8608, Aug. 2022.
[25] H.-S. Lee, J. Ahn, K. Eom, W. Jung, S.-J. Lee, Y.-W. Jeong, S.-U. Shin, and H.-M. Lee, "A Power-Efficient Resonant Current Mode Receiver with Wide Input Range over Breakdown Voltages Using Automated Maximum Efficiency Control," IEEE Transactions on Power Electronics, vol. 37, no. 7, pp. 8738-8750, Jul. 2022.
<2021>
[24] D. Ro, M. Um, and H.-M. Lee, "A Soft-Error-Tolerant SAR ADC with Dual-Capacitor Sample-and-Hold Control for Sensor Systems," Sensors, vol. 21, no. 14, Jul. 2021.
[23] H. Yu, M. Cho, S. Lee, H.-M. Lee, and Y. Kim, "Multi Look-up Table FPGA Reverse Engineering with Bitstream Extraction and Multiple PIP/PLP Matching," Journal of Semiconductor Technology and Science, vol. 21, no. 1, Feb. 2021.
[22] W. Jung, S.-U. Shin, S.-W. Hong, S.-M. Yoo, T.-H. Kong, J.-H. Yang, S.-H. Kim, M. Choi, J. Shin, and H.-M. Lee, "Dual-Path Three-Level Buck Converter with Loop-Free Auto-Calibration for Flying Capacitor Self-Balancing," IEEE Transactions on Power Electronics, vol. 36, no. 1, pp. 51-55, Jan. 2021.
<2020>
[21] J. Baek, H.-M. Lee, and S.-U. Shin, "Triple-Mode Switched-Inductor-Capacitor DC-DC Buck Converter with Reusable Flying Capacitor and Bang-Bang Zero-Current Detector for Wide Load Current Range," Electronics, vol. 9, no. 8, Aug. 2020.
[20] S.-U. Shin, S.-W. Hong, H.-M. Lee, and G.-H. Cho, "High Efficiency Hybrid Dual-Path Step-Up DC-DC Converter with Continuous Output Delivery Current for Low Output Ripple," IEEE Transactions on Power Electronics, vol. 35, no. 6, pp. 6025-6038, Jun. 2020.
[19] S.-U. Shin, M. Choi, S. Jung, H.-M. Lee, and G.-H. Cho, "A Time-Interleaved Resonant Voltage Mode Wireless Power Receiver with Delay-Based Tracking Loops for Implantable Medical Devices," IEEE Journal of Solid-State Circuits, vol. 55, no. 5, pp. 1374-1385, May 2020.
[18] J. Park, H.-M. Lee, S.-U. Shin, W. Choi, and S.-W. 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, vol. 35, no. 5, pp. 4477-4482, May 2020.
[17] D. Ro, C. Min, M. Kang, I. J. Chang, and H.-M. Lee, "A Radiation-Hardened SAR ADC with Delay-Based Dual Feedback Flip-Flops for Sensor Readout Systems," Sensors, vol. 20, no. 1, Jan. 2020.
<2019>
[16] K.-D. Kim, H.-M. Lee, S.-W. Hong, and G.-H. Cho, "A Non-Inverting Buck-Boost Converter with State-Based Current Control for Li-Ion Battery Management in Mobile Applications," IEEE Transactions on Industrial Electronics, vol. 66, no. 12, pp. 9623-9627, Dec. 2019.
[15] H.-M. Lee, Y.-J. Jeon, S.-W. Lee, B. Lee, and G.-H. Cho, "An Area and Power Efficient Interpolation Scheme Using Variable Current Control for 10-bit Data Drivers in Mobile Active-Matrix LCDs," IEEE Transactions on Consumer Electronics, vol. 65, no. 2, pp. 253-262, May 2019.
<2018>
[14] K. Jeong, D. Ro, G. Lee, M. Kang, and H.-M. Lee, "A Radiation-Hardened Instrumentation Amplifier for Sensor Readout Integrated Circuits in Nuclear Fusion Applications," Electronics, vol. 7, no. 12, Dec. 2018.
[13] H. Yu, H. Lee, S. Lee, Y. Kim, and H.-M. Lee, "Recent Advances in FPGA Reverse Engineering," Electronics, vol. 7, no. 10, Oct. 2018.
[12] H.-M. Lee, B. Howell, W. M. Grill, and M. Ghovanloo, "Stimulation Efficiency with Decaying Exponential Waveforms in a Wirelessly-Powered Capacitive Discharging Stimulation System," IEEE Transactions on Biomedical Engineering, vol. 65, no. 5, pp. 1095-1106, May 2018.
<2017>
[11] H.-M. Lee, C. S. Juvekar, J. Kwong, and A. P. Chandrakasan, "A Nonvolatile Flip-Flop-Enabled Cryptographic Wireless Authentication Tag with Per-Query Key Update and Power-Glitch Attack Countermeasures," IEEE Journal of Solid-State Circuits, vol. 52, no. 1, pp. 272-283, Jan. 2017.
<~2016>
[10] K.-Y. Kwon, H.-M. Lee, M. Ghovanloo, A. Weber, and W. Li, "Design, Fabrication, and Packaging of an Integrated, Wirelessly-Powered Optrode Array for Optogenetics Application," Frontiers in Systems Neuroscience, vol. 9, no. 69, May 2015.
[09] H.-M. Lee, K.-Y. Kwon, W. Li, B. Howell, W. M. Grill, and M. Ghovanloo, "A Power-Efficient Switched-Capacitor Stimulating System for Electrical/Optical Deep-Brain Stimulation," IEEE Journal of Solid-State Circuits, vol. 50, no. 1, pp. 360-374, Jan. 2015.
[08] H.-M. Lee and M. Ghovanloo, "A Power-Efficient Wireless Capacitor Charging System Through an Inductive Link," IEEE Transactions on Circuits and Systems II, vol. 60, no. 10, pp. 707-711, Oct. 2013.
[07] H.-M. Lee, H. Park, and M. Ghovanloo, "A Power-Efficient Wireless System with Adaptive Supply Control for Deep Brain Stimulation," IEEE Journal of Solid-State Circuits, vol. 48, no. 9, pp. 2203-2216, Sep. 2013.
[06] H.-M. Lee and M. Ghovanloo, "A High Frequency Active Voltage Doubler in Standard CMOS Using Offset-Controlled Comparators for Inductive Power Transmission," IEEE Transactions on Biomedical Circuits and Systems, vol. 7, no. 3, pp. 213-224, Jun. 2013.
[05] H. Park, M. Kiani, H.-M. Lee, J. Kim, J. Block, B. Gosselin, and M. Ghovanloo, "A Wireless Magnetoresistive Sensing System for an Intraoral Tongue-Computer Interface," IEEE Transactions on Biomedical Circuits and Systems, vol. 6, no. 6, pp. 571-585, Dec. 2012.
[04] H.-M. Lee and M. Ghovanloo, "An Adaptive Reconfigurable Active Voltage Doubler/Rectifier for Extended-Range Inductive Power Transmission," IEEE Transactions on Circuits and Systems II, vol. 59, no. 8, pp.481-485, Aug. 2012.
[03] H.-M. Lee and M. Ghovanloo, "An Integrated Power-Efficient Active Rectifier with Offset-Controlled High Speed Comparators for Inductively-Powered Applications," IEEE Transactions on Circuits and Systems I, vol. 58, no. 8, pp. 1749-1760, Aug. 2011.
[02] S. B. Lee, H.-M. Lee, M. Kiani, U.-M. Jow, and M. Ghovanloo, "An Inductively Powered Scalable 32-ch Wireless Neural Recording System-on-a-Chip with Power Scheduling for Neuroscience Applications," IEEE Transactions on Biomedical Circuits and Systems, vol. 4, no. 6, pp. 360-371, Dec. 2010.
[01] Y.-J. Jeon, H.-M. Lee, S.-W. Lee, G.-H. Cho, H.-R. Kim, Y.-K. Choi, and M. Lee, "A Piecewise Linear 10 bit DAC Architecture with Drain Current Modulation for Compact AMLCD Driver ICs," IEEE Journal of Solid-State Circuits, vol. 44, no. 12, pp.3659-3675, Dec. 2009.