A novel voltage-control scheme for low-voltage DC-DC converters with fast transient recovery. - Hoi Lee; Philip K. T. Mok; Wing-Hung Ki (ISCAS, 2000)

A CMOS current-mirror amplifier with compact slew rate enhancement circuit for large capacitive load applications. - Hoi Lee; Philip K. T. Mok (ISCAS (1), 2001)

Active-feedback frequency compensation for low-power multi-stage amplifiers. - Hoi Lee; Philip K. T. Mok (CICC, 2002)

Switching noise reduction techniques for switched-capacitor voltage doubler. - Hoi Lee; Philip K. T. Mok (CICC, 2003)

A dual-path bandwidth extension amplifier topology with dual-loop parallel compensation. - Hoi Lee; Ka Nang Leung; Philip K. T. Mok (IEEE J. Solid State Circuits, 2003)

Active-feedback frequency-compensation technique for low-power multistage amplifiers. - Hoi Lee; Philip K. T. Mok (IEEE J. Solid State Circuits, 2003)

Advances in active-feedback frequency compensation with power optimization and transient improvement. - Hoi Lee; Philip K. T. Mok (IEEE Trans. Circuits Syst. I Regul. Pap., 2004)

A continuous-time adaptive FIR equalizer with LNV-AIL delay line for 2.5Gb/s data communication. - Xiaofeng Lin 003; Hoi Lee; Jin Liu 004 (CICC, 2005)

A 35nW/pixel 2D visual motion sensor. - Guangbin Zhang; Hoi Lee; Jin Liu (ESSCIRC, 2005)

Switching noise and shoot-through current reduction techniques for switched-capacitor voltage doubler. - Hoi Lee; Philip K. T. Mok (IEEE J. Solid State Circuits, 2005)

Design of low-power analog drivers based on slew-rate enhancement circuits for CMOS low-dropout regulators. - Hoi Lee; Philip K. T. Mok; Ka Nang Leung (IEEE Trans. Circuits Syst. II Express Briefs, 2005)

A Transient-Enhanced 20μA-Quiescent 200mA-Load Low-Dropout Regulator With Buffer Impedance Attenuation. - Mohammad A. Al-Shyoukh; Raul A. Perez; Hoi Lee (CICC, 2006)

A 1.2V, 3.5µW, 20MS/s, 8-bit comparator with dynamic-biasing preamplifier. - Sunwoo Kwon; Hoi Lee (ISCAS, 2006)

A low-power active substrate-noise decoupling circuit with feedforward compensation for mixed-signal SoCs. - Song Guo; Hoi Lee (ISLPED, 2006)

A 2.5- to 3.5-Gb/s Adaptive FIR Equalizer With Continuous-Time Wide-Bandwidth Delay Line in 0.25-$muhbox m$CMOS. - Xiaofeng Lin 003; Jin Liu 004; Hoi Lee; Hao Liu (IEEE J. Solid State Circuits, 2006)

An Efficiency-Enhanced Integrated CMOS Rectifier with Comparator-Controlled Switches for Transcutaneous Powered Implants. - Song Guo; Hoi Lee (CICC, 2007)

Dual Active-Capacitive-Feedback Compensation for Area-Efficient Three-Stage Amplifiers. - Song Guo; Hoi Lee (ISCAS, 2007)

A Transient-Enhanced Low-Quiescent Current Low-Dropout Regulator With Buffer Impedance Attenuation. - Mohammad Al-Shyoukh; Hoi Lee; Raul A. Perez (IEEE J. Solid State Circuits, 2007)

An SC Voltage Doubler with Pseudo-Continuous Output Regulation Using a Three-Stage Switchable Opamp. - Hoi Lee; Philip K. T. Mok (IEEE J. Solid State Circuits, 2007)

A 9-Bit configurable current source with enhanced output resistance for cochlear stimulators. - Song Guo; Hoi Lee; Philipos C. Loizou (CICC, 2008)

A 2.5MHz, 97%-accuracy on-chip current sensor with dynamically-biased shunt feedback for current-mode switching DC-DC converters. - Mengmeng Du; Hoi Lee (ISCAS, 2008)

An efficiency-enhanced auto-reconfigurable 2x/3x SC charge pump for transcutaneous power transmission. - Xiwen Zhang; Hoi Lee (CICC, 2009)

A low-voltage low-power comparator With current-controlled dynamically-biased preamplifiers For DCM buck regulators. - Hoi Lee (ICECS, 2009)

An Efficiency-Enhanced CMOS Rectifier With Unbalanced-Biased Comparators for Transcutaneous-Powered High-Current Implants. - Song Guo; Hoi Lee (IEEE J. Solid State Circuits, 2009)

A Compact Ramp-Based Soft-Start Circuit for Voltage Regulators. - Mohammad A. Al-Shyoukh; Hoi Lee (IEEE Trans. Circuits Syst. II Express Briefs, 2009)

Single-Capacitor Active-Feedback Compensation for Small-Capacitive-Load Three-Stage Amplifiers. - Song Guo; Hoi Lee (IEEE Trans. Circuits Syst. II Express Briefs, 2009)

A 5-MHz 91% peak-power-efficiency buck regulator with auto-selectable peak- and valley-current control. - Mengmeng Du; Hoi Lee (CICC, 2010)

A current-limiter-based soft-start scheme for linear and low-dropout voltage regulators. - Mohammad A. Al-Shyoukh; Hoi Lee (ISCAS, 2010)

An Efficiency-Enhanced Auto-Reconfigurable 2 ˟ /3 ˟ SC Charge Pump for Transcutaneous Power Transmission. - Xiwen Zhang; Hoi Lee (IEEE J. Solid State Circuits, 2010)

A Compact Fully-Integrated Extremum-Selector-Based Soft-Start Circuit for Voltage Regulators in Bulk CMOS Technologies. - Mohammad A. Al-Shyoukh; Hoi Lee (IEEE Trans. Circuits Syst. II Express Briefs, 2010)

An Integrated Speed- and Accuracy-Enhanced CMOS Current Sensor With Dynamically Biased Shunt Feedback for Current-Mode Buck Regulators. - Mengmeng Du; Hoi Lee (IEEE Trans. Circuits Syst. I Regul. Pap., 2010)

An Efficiency-Enhanced DCM Buck Regulator With Improved Switching Timing of Power Transistors. - Hoi Lee; Seong-Ryong Ryu (IEEE Trans. Circuits Syst. II Express Briefs, 2010)

Bulk Voltage Trimming Offset Calibration for High-Speed Flash ADCs. - Junjie Yao; Jin Liu 004; Hoi Lee (IEEE Trans. Circuits Syst. II Express Briefs, 2010)

A reconfigurable 2× / 2.5× / 3× / 4× SC DC-DC regulator for enhancing area and power efficiencies in transcutaneous power transmission. - Xiwen Zhang; Hoi Lee (CICC, 2011)

On the design of a flexible stimulator for animal studies in auditory prostheses. - Douglas Kim; Vanishree Gopalakrishna; Song Guo; Hoi Lee; Murat Torlak; Nasser Kehtarnavaz; Arthur P. Lobo; Philipos C. Loizou (Biomed. Signal Process. Control., 2011)

A 5-MHz 91% Peak-Power-Efficiency Buck Regulator With Auto-Selectable Peak- and Valley-Current Control. - Mengmeng Du; Hoi Lee; Jin Liu 004 (IEEE J. Solid State Circuits, 2011)

Dual Active-Capacitive-Feedback Compensation for Low-Power Large-Capacitive-Load Three-Stage Amplifiers. - Song Guo; Hoi Lee (IEEE J. Solid State Circuits, 2011)

An event-driven ultra-low-current battery management system with reconfigurable linear regulator for multi-cell battery applications. - Jun Hua; Hoi Lee; Ken King (ISCAS, 2012)

A high-efficiency auto-reconfigurable SITIDO boost/buck regulator with input power conditioning for energy-harvesting applications. - Mengmeng Du; Hoi Lee (MWSCAS, 2012)

Ground Switching Load Modulation With Ground Isolation for Passive HF RFID Transponders. - Yunlei Li; Jin Liu 004; Hoi Lee (IEEE Trans. Very Large Scale Integr. Syst., 2012)

A 100V gate driver with sub-nanosecond-delay capacitive-coupled level shifting and dynamic timing control for ZVS-based synchronous power converters. - Zhidong Liu; Hoi Lee (CICC, 2013)

A 40V 10W 93%-efficiency current-accuracy-enhanced dimmable LED driver with adaptive timing difference compensation for solid-state lighting applications. - Dongkyung Park; Hoi Lee (CICC, 2013)

An auto-reconfigurable dual-output SC DC-DC regulator with sub-harmonic fixed on-time control for energy-harvesting applications. - Zhe Hua; Hoi Lee; Xiwen Zhang (ISCAS, 2013)

A cross-regulation-free triple-output switched-capacitor DC-DC regulator for energy-harvesting applications. - Zhe Hua; Hoi Lee (MWSCAS, 2013)

A synchronous LED driver with dynamic level-shifting and simultaneous peak & valley current sensing for high-brightness lighting applications. - Zhidong Liu; Hoi Lee (MWSCAS, 2013)

Gain-Enhanced Monolithic Charge Pump With Simultaneous Dynamic Gate and Substrate Control. - Xiwen Zhang; Hoi Lee (IEEE Trans. Very Large Scale Integr. Syst., 2013)

A 5-Gb/s Automatic Sub-Bit Between-Pair Skew Compensator for Parallel Data Communications in 0.13-µm CMOS. - Yuxiang Zheng; Jin Liu 004; Robert Payne; Mark Morgan; Hoi Lee (IEEE Trans. Very Large Scale Integr. Syst., 2013)

23.6 A 43V 400mW-to-21W global-search-based photovoltaic energy harvester with 350μs transient time, 99.9% MPPT efficiency, and 94% power efficiency. - Sandip Uprety; Hoi Lee (ISSCC, 2014)

A 140W 97%-efficiency 4MHz two-phase buck converter with quasi-square-wave ZVS scheme. - Lin Cong; Jing Xue; Hoi Lee (MWSCAS, 2014)

Building high-frequency high-voltage switching converters for renewable energy systems. - Zhidong Liu; Jing Xue; Lin Cong; Hoi Lee (MWSCAS, 2014)

A 40 V 10 W 93%-Efficiency Current-Accuracy-Enhanced Dimmable LED Driver With Adaptive Timing Difference Compensation for Solid-State Lighting Applications. - Dongkyung Park; Zhidong Liu; Hoi Lee (IEEE J. Solid State Circuits, 2014)

Improvements in Light-Load Efficiency and Operation Frequency for Low-Voltage Current-Mode Integrated Boost Converters. - Dongkyung Park; Hoi Lee (IEEE Trans. Circuits Syst. II Express Briefs, 2014)

Session 19 - Power management. - Hoi Lee; Jeff Morroni (CICC, 2015)

A 5-115V efficiency-enhanced synchronous LED driver with adaptive resonant timing control. - Zhidong Liu; Hoi Lee (CICC, 2015)

A Reconfigurable Dual-Output Switched-Capacitor DC-DC Regulator With Sub-Harmonic Adaptive-On-Time Control for Low-Power Applications. - Zhe Hua; Hoi Lee (IEEE J. Solid State Circuits, 2015)

Design of On-Chip Gate Drivers With Power-Efficient High-Speed Level Shifting and Dynamic Timing Control for High-Voltage Synchronous Switching Power Converters. - Zhidong Liu; Lin Cong; Hoi Lee (IEEE J. Solid State Circuits, 2015)

A 26 W 97%-Efficiency Fast-Settling Dimmable LED Driver With Dual-nMOS-Sensing Based Glitch-Tolerant Synchronous Current Control for High-Brightness Solid-State Lighting Applications. - Zhidong Liu; Hoi Lee (IEEE J. Solid State Circuits, 2015)

A 2-MHz 60-W Zero-Voltage-Switching Synchronous Noninverting Buck-Boost Converter With Reduced Component Values. - Jing Xue; Hoi Lee (IEEE Trans. Circuits Syst. II Express Briefs, 2015)

A Reconfigurable 2×2.5×3×4× SC DC-DC Regulator With Fixed On-Time Control for Transcutaneous Power Transmission. - Hoi Lee; Zhe Hua; Xiwen Zhang (IEEE Trans. Very Large Scale Integr. Syst., 2015)

12.5 A 2MHz 12-to-100V 90%-efficiency self-balancing ZVS three-level DC-DC regulator with constant-frequency AOT V2 control and 5ns ZVS turn-on delay. - Jing Xue; Hoi Lee (ISSCC, 2016)

A Wide-Input-Range Efficiency-Enhanced Synchronous Integrated LED Driver With Adaptive Resonant Timing Control. - Zhidong Liu; Hoi Lee (IEEE J. Solid State Circuits, 2016)

A 0.4W-to-21W Fast-Transient Global-Search-Algorithm Based Integrated Photovoltaic Energy Harvester With 99% GMPPT Efficiency and 94% Power Efficiency. - Sandip Uprety; Hoi Lee (IEEE J. Solid State Circuits, 2016)

A 2 MHz 12-100 V 90% Efficiency Self-Balancing ZVS Reconfigurable Three-Level DC-DC Regulator With Constant-Frequency Adaptive-On-Time V2 Control and Nanosecond-Scale ZVS Turn-On Delay. - Jing Xue; Hoi Lee (IEEE J. Solid State Circuits, 2016)

An Auto-Reconfigurable 2×4× AC-DC Regulator for Wirelessly Powered Biomedical Implants With 28% Link Efficiency Enhancement. - Hoi Lee (IEEE Trans. Very Large Scale Integr. Syst., 2016)

A 1.2A auto-configurable dual-output switched-capacitor DC-DC regulator with continuous gate-drive modulation achieving <0.01mV/mA cross regulation. - Zhe Hua; Hoi Lee (CICC, 2017)

Session 10 overview: DC-DC converters. - Hoi Lee; Gerard Villar Pique; Axel Thomsen (ISSCC, 2017)

22.5 A 93%-power-efficiency photovoltaic energy harvester with irradiance-aware auto-reconfigurable MPPT scheme achieving >95% MPPT efficiency across 650µW to 1W and 2.9ms FOCV MPPT transient time. - Sandip Uprety; Hoi Lee (ISSCC, 2017)

A 2MHz 150-to-400V input isolated DC-DC bus converter with monolithic slope-sensing ZVS detection achieving 13ns turn-on delay and 1.6W power saving. - Lin Cong; Hoi Lee (ISSCC, 2018)

A 1-2-MHz 150-400-V GaN-Based Isolated DC-DC Bus Converter With Monolithic Slope-Sensing ZVS Detection. - Lin Cong; Hoi Lee (IEEE J. Solid State Circuits, 2018)

A Current-Accuracy-Enhanced Wide-Input-Range DC-DC LED Driver With Feedforward Synchronous Current Control. - Zhidong Liu; Hoi Lee (IEEE Trans. Circuits Syst. I Regul. Pap., 2018)

Ratio Extension Technique for Ladder-/ Dickson- Based Multiple-Output Switched-Capacitor DC-DC Converters. - Zhe Hua; Hoi Lee (MWSCAS, 2019)

A Current-Density-Enhanced 12V-to-1.2V/10A, AOT-Controlled, 4-Phase Series-Capacitor Buck Converter with Embedded Current Balancing. - Shuyu Zhang; Menglian Zhao; Hoi Lee (MWSCAS, 2019)

A High-Efficiency Low-Profile Zero-Voltage Transition Synchronous Non-Inverting Buck-Boost Converter With Auxiliary-Component Sharing. - Lin Cong; Jin Liu 004; Hoi Lee (IEEE Trans. Circuits Syst. I Regul. Pap., 2019)

A 9 - 45V Input 2MHz 3-Switch ZVS Step-up / -down Hybrid Converter with 5x Volume Reduction. - Chen Chen; Jin Liu 004; Hoi Lee (CICC, 2020)

11.4 A 48-to-80V Input 2MHz Adaptive ZVT-Assisted GaN-Based Bus Converter Achieving 14% Light-Load Efficiency Improvement. - Qi Cheng 005; Lin Cong; Hoi Lee (ISSCC, 2020)

Introduction to the Special Issue on the 2020 IEEE International Solid-State Circuits Conference (ISSCC). - David T. Blaauw; Hoi Lee; John P. Keane; Jaehyouk Choi; Sudhakar Pamarti (IEEE J. Solid State Circuits, 2020)

A 87.2%-Efficiency 27.12MHz Current-Mode Wireless Power Receiver with Ramp-Assisted Energy Delivery Controller for Implantable Devices. - Ziyang Luo; Hoi Lee (A-SSCC, 2021)

A 5-100V Input Low-Profile Adaptive Delay Compensated Hysteretic LED Driver with Enhanced Current Accuracy. - Qi Cheng 005; Jin Liu 004; Hoi Lee (CICC, 2021)

A 40.68MHz Active Rectifier with Cycle-Based On/Off-Delay Compensation for Biomedical Implants. - Ziyang Luo; Hoi Lee (ESSCIRC, 2021)

A 2-MHz 9-45-V Input High-Efficiency Three-Switch ZVS Step-Up/-Down Hybrid Converter. - Chen Chen; Jin Liu 004; Hoi Lee (IEEE J. Solid State Circuits, 2021)

A 1.2-A Dual-Output SC DC-DC Regulator With Continuous Gate-Drive Modulation Achieving ≤0.01-mV/mA Cross Regulation. - Zhe Hua; Qi Cheng 005; Jin Liu 004; Hoi Lee (IEEE J. Solid State Circuits, 2021)

A 0.65-mW-to-1-W Photovoltaic Energy Harvester With Irradiance-Aware Auto-Configurable Hybrid MPPT Achieving >95% MPPT Efficiency and 2.9-ms FOCV Transient Time. - Sandip Uprety; Hoi Lee (IEEE J. Solid State Circuits, 2021)

A 200mA-Load 0.62fs-FOM Active-Capacitor-Assisted Dual-loop Output Capacitorless Low-Dropout Regulator in Standard 65nm CMOS. - Weijie Han; Ziyang Luo; Chen Chen; Jin Liu 004; Hoi Lee (ISCAS, 2022)

A 3rd Order CT-ΣΔ Modulator with a Hybrid Loop Filter Employing Passive and Continuous-Time Delay Based Integrators. - Jiu Xiong; Jeniffer Zhao; Jin Liu 004; Hoi Lee (ISCAS, 2022)

A 2-5MHz Multiple DC Output Hybrid Boost Converter with Scalable CR Boosting Scheme Achievi 1 ng 91% Efficie 1 ncy at a Conversion Ratio of 12. - Chen Chen; Jin Liu 004; Hoi Lee (ISSCC, 2022)

A 2.5-5MHz 87% Peak Efficiency 48V-to-1V Integrated Hybrid DC-DC Converter Adopting Ladder SC Network with Capacitor-Assisted Dual-Inductor Filtering. - Chen Chen; Jin Liu 004; Hoi Lee (ISSCC, 2022)

A 48-80-V Input 2-MHz Adaptive ZVT-Assisted Bus Converter With Light-Load Efficiency Improvement. - Qi Cheng 005; Lin Cong; Hoi Lee (IEEE J. Solid State Circuits, 2022)

A Wide-Input-Range Low-Profile Adaptive Delay Compensated Hysteretic LED Driver With Enhanced Current Accuracy. - Qi Cheng 005; Jin Liu 004; Hoi Lee (IEEE J. Solid State Circuits, 2022)

A Continuous-Time Sigma-Delta Modulator With Continuous-Time Delay-Based Integrator. - Jiu Xiong; Jin Liu 004; Hoi Lee (IEEE Trans. Circuits Syst. II Express Briefs, 2022)

A 90%-Efficiency 40.68MHz Single-Stage Dual-Output Regulating Rectifier with ZVS and Synchronous PFM Control for Wireless Powering. - Ziyang Luo; Jin Liu; Hoi Lee (ISSCC, 2023)

A 40.68-MHz Active Rectifier With Cycle-Based On-/Off-Delay Compensation for High-Current Biomedical Implants. - Ziyang Luo; Jin Liu 004; Hoi Lee (IEEE J. Solid State Circuits, 2023)

High-Efficiency High-Conversion-Ratio Power Delivery Circuits for Computing Applications. - Hoi Lee; Chen Chen; Weijie Han; Athul M. Sudha; Navaneeth Sri Easwaran; Jin Liu (BCICTS, 2024)

A High-Efficiency 40.68-MHz Single-Stage Dual-Output Regulating Rectifier With ZVS and Synchronous PFM Control for Wireless Powering. - Ziyang Luo; Jin Liu 004; Hoi Lee (IEEE J. Solid State Circuits, 2024)

A Tri-Mode Reconfigurable DC-DC Converter With Photovoltaic Energy Harvesting for Miniature IoT Batteries. - Junyoung Maeng; Inho Park; Jinwoo Jeon; Hyunjin Kim; Hoi Lee; Chulwoo Kim (IEEE Trans. Circuits Syst. II Express Briefs, 2024)