Ultra-low power analog/digital circuit design
Energy harvesting & Power management
mm-scale sensor platform design
Neuromorphic & Machine Learning Accelerators
IoT security IP
Low power digital circuits
학력
(Ph.D.) University of Michigan, MI, USA, 2012
(M.S.) University of Michigan, MI, USA, 2008
(B.S.) POSTECH, Korea, 2004
약력/경력
Assistant Research Scientist, University of Michigan, MI, USA, 2012-2015
Co-founder, CubeWorks Inc., MI, USA, 2013
Research Fellow, University of Michigan, MI, USA, 2012
Visiting Scholar, IBM T.J. Watson Research Center, NY, USA, 2009
Graduate Technical Intern, Intel Corp., OR, USA, 2008
학술지 논문
(2023)
An RC Delay-Based Pressure-Sensing System With Energy-Efficient Bit-Level Oversampling Techniques for Implantable IOP Monitoring Systems.
IEEE JOURNAL OF SOLID-STATE CIRCUITS.
58,
10
(2023)
Artificial Visual Systems Fabricated with Ferroelectric van der Waals Heterostructure for In-Memory Computing Applications.
ACS NANO.
17,
21
(2023)
A Differential Flip-Flop With Static Contention-Free Characteristics in 28 nm for Low-Voltage, Low-Power Applications.
IEEE JOURNAL OF SOLID-STATE CIRCUITS.
58,
5
(2022)
A 20F(2)/Bit Current-Integration-Based Differential NAND-Structured PUF for Stable and V/T Variation-Tolerant Low-Cost IoT Security.
IEEE JOURNAL OF SOLID-STATE CIRCUITS.
57,
10
(2022)
Variation-Tolerant and Low R-Ratio Compute-in-Memory ReRAM Macro With Capacitive Ternary MAC Operation.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS.
69,
7
(2022)
A Continuously-Scalable-Conversion-Ratio Step-Up/Down SC Energy-Harvesting Interface With MPPT Enabled by Real-Time Power Monitoring With Frequency-Mapped Capacitor DAC.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS.
69,
4
(2021)
A Harvesting Circuit for Flexible Thin-Film Piezoelectric Generator Achieving 562% Energy Extraction Improvement With Load Screening.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS.
68,
12
(2021)
An Ultra-Low-Power Fully-Static Contention-Free Flip-Flop With Complete Redundant Clock Transition and Transistor Elimination.
IEEE JOURNAL OF SOLID-STATE CIRCUITS.
56,
10
(2021)
A Charge-Domain Scalable-Weight In-Memory Computing Macro With Dual-SRAM Architecture for Precision-Scalable DNN Accelerators.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS.
68,
8
(2021)
Dual Piezoelectric Energy Investing and Harvesting Interface for High-Voltage Input.
SENSORS.
21,
7
(2021)
A 354F(2) Leakage-Based Physically Unclonable Function With Lossless Stabilization Through Remapping for Low-Cost IoT Security.
IEEE JOURNAL OF SOLID-STATE CIRCUITS.
56,
2
(2020)
An Asynchronous Boost Converter With Time-Based Dual-Mode Control for Wide Load Range and High Efficiency in SSD Applications.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS.
67,
12
(2020)
A Soft-Charging-Based SC DC-DC Boost Converter With Conversion-Ratio-Insensitive High Efficiency for Energy Harvesting in Miniature Sensor Systems.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS.
67,
10
(2020)
A Piezoelectric Harvesting Interface with Capacitive Partial Electric Charge Extraction for Energy Harvesting from Irregular High-Voltage Input.
ENERGIES.
13,
8
(2020)
Two-way oxide rupture scheme for PUF implementation in low-cost IoT systems.
ELECTRONICS LETTERS.
56,
20
(2020)
A multiple negative differential resistance heterojunction device and its circuit application to ternary static random access memory.
NANOSCALE HORIZONS.
5,
4
(2020)
A Fully Static True-Single-Phase-Clocked Dual-Edge-Triggered Flip-Flop for Near-Threshold Voltage Operation in IoT Applications.
IEEE ACCESS.
8,
1
(2020)
A Redundancy Eliminated Flip-Flop in 28 nm for Low-Voltage Low-Power Applications.
IEEE Solid-State Circuits Letters.
3,
(2019)
A PVT variation-tolerant static single-phase clocked dual-edge triggered flip-flop for aggressive voltage scaling.
IEICE ELECTRONICS EXPRESS.
16,
20
특허/프로그램
CIRCUIT FOR PHYSICALLY UNCLONABLE FUNCTION AND A METHOD TO GENERATE PRIVATE KEY FOR SECURE AUTHENTICATION USING A PHYSICALLY UNCLONABLE FUNCTION CELL.
17021327.
20230509.
미국
Complementary Clock Gate and Low Power Flip-flop Circuit Including Gate.
17/496,941.
20230404.
미국
에너지 하베스팅 장치.
10-2020-0087815.
20220726.
대한민국
상보적 클럭 게이트 및 이를 포함하는 저전력 플립플랍 회로(COMPLEMENTARY CLOCK GATE AND LOW POWER FLIP-FLOP CIRCUIT INCLUDING SAME).
10-2421-4720000.
20220712.
대한민국
Method and apparatus with physically unclonable function (PUF) cell remapping and PUF circuit.
16/272,110.
20220308.
미국
부스트 컨버터 및 부스트 컨버터에 적용되는 셀.
16/678,021.
20210525.
미국
Low power RC oscillator with switched bias current.
16/268676.
20201124.
미국
유연 압전기를 이용한 에너지 하베스팅 시스템 및 그 제어 방법.
10-2019-0043939.
20201027.
대한민국
비주기적 신호가 입력되는 하베스트 회로를 포함하는 전자 장치.
10-2019-0110129.
20201013.
대한민국
전압 감쇠 모듈과 전압 감쇠 장치 및 그 방법.
10-2018-0141919.
20200429.
대한민국
전압 제어 발진기(VOLTAGE CONTROLLED OSCILLATOR).
10-2018-0121865.
20200212.
대한민국
Oscillator using supply regulation loop and operating method thereof.
15/834,342.
20191119.
미국
전압 증폭 모듈과 전압 증폭 장치 및 방법(Module of voltage amplifier and method and apparatus for amplifying voltage).
10-2018-0007727.
20190902.
대한민국
PUF(Physically Unclonable Function) 셀 재조합 방법 및 장치와, PUF 회로(Method and apparatus for combining of PUF cell and PUF circuit).
10-1989-1490000.
20190607.
대한민국
(2022)
A 0.24 mmHg (1σ) Resolution Half-Bridge-to-Digital Converter with RC Delay-Based Pressure Sensing and Energy-Efficient Bit-Level Oversampling Techniques for Implantable Miniature Systems.
IEEE Asian Solid-State Circuits Conference (A-SSCC).
대만
(2022)
A Variation-Tolerant Differential Contention-Free Pulsed Latch with Wide Voltage Scalability.
IEEE Asian Solid-State Circuits Conference (A-SSCC).
대만
(2022)
Logic-embedded Physically Unclonable Functions for Synthesizable and Periphery-free Implementation for Low Area and Design Cost IoT Security.
IEEE European Solid-State Circuits Conference (ESSCIRC).
이탈리아
(2021)
A current-integrated differential NAND-structured PUF for stable and V/T variation-tolerant low-cost IoT security.
IEEE Asian Solid-State Circuits Conference (A-SSCC).
대한민국
(2021)
A Charge-Domain Computation-In-Memory Macro with Versatile All-Around-Wire-Capacitor for Variable-Precision Computation and Array-Embedded DA/AD Conversions.
IEEE European Solid-State Circuits Conference (ESSCIRC).
프랑스
(2020)
A Redundancy Eliminated Flip-flop in 28nm for Low-Voltage Low-Power Applications.
IEEE Asian Solid-State Circuits Conference.
일본
(2020)
A Static Contention-Free Differential Flip-Flop in 28nm for Low-Voltage, Low-Power Applications.
IEEE Custom Integrated Circuits Conference (CICC).
미국
(2019)
A Conversion-Ratio-Insensitive High Efficiency Soft-Charging-Based SC DC-DC Boost Converter for Energy Harvesting in Miniature Sensor Systems.
IEEE Asian Solid-State Circuits Conference.
중국
(2019)
A Piezoelectric Energy Harvesting Interface for Irregular High Voltage Input with Partial Electric Charge Extraction with 3.9x Extraction Improvement.
IEEE Asian Solid-State Circuits Conference.
중국
(2019)
A 20F2 Area-Efficient Differential NAND-Structured Physically Unclonable Function for Low-Cost IoT Security.
European Solid State Circuits Conference.
폴란드
(2019)
A 17V-to-45V Input 25μW-to-10mW Output Power, 90.2%-Peak-Efficiency SC DC-DC Converter with Recursive Output Connection for High-Voltage Energy Harvesting.
Custom Integrated Circuits Conference (CICC).
미국
(2018)
A Sub-nW Fully Integrated Switched-Capacitor Energy Harvester for Implantable Applications.
IEEE European Solid-State Circuits Conference.
독일
(2018)
A 445F2 leakage-based physically unclonable Function with Lossless Stabilization Through Remapping for IoT Security.
IEEE International Solid-State Circuits Conference.
미국
(2017)
A Wide Load and Voltage Range Switched-Capacitor DC-DC Converter with Load-Dependent Configurability for DVS Implementation in Miniature Sensors.
IEEE Asian Solid-State Circuits Conference (ASSCC).
대한민국
(2016)
A High Efficiency Wide-Load-Range Asynchronous Boost Converter with Time-Based Dual-Mode Control for SSD Applications.
IEEE Asian Solid-State Circuits Conference (ASSCC).
일본
