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A Fast-Transient Digital LDO With Asynchronous Coarse and Dual-Mode Fine Regulation Loops
Field : Power Management IC
Designer : Ibrar Ali Wahla, Jongwoon Lee, Muhammad Abrar Akram and In-chul Hwang
T/O Date : -
Process : 65nm CMOS
2026 IEEE Open Journal of Power Electronics
An Ultra-Fast 460-mA Capacitorless DLDO Achieving 8-ns Recovery Time and 99.58% Current Efficiency
Field : Power Management IC
Designer : Ibrar Ali Wahla, Muhammad Abrar Akram and In-chul Hwang
T/O Date : -
Process : 65nm CMOS
2025 Journal of Semiconductor Technology and Science
Fractional-N Sampling Phase-Locked Loop with time domain sign generation using Aux-DTC and fast locking AFC
Field : Frequency Synthesizer
Designer : Joowon Choi, Ibrar Ali Wahla, Seunghyun Kang, Jonghoon Park and Inchul Hwang
T/O Date : 2024.09
Process : 65nm CMOS
2025 Asia-Pacific Microwave Conference (APMC)
A ∆Σ Frequency-to-Digital Converter Based Sub-Sampling DPLL without extra Modules in Auxiliary Loop
Field : Frequency Synthesizer
Designer : Jonghoon Park, Joowon Choi, Seunghyun Kang, Ibrar Ali Wahla, Yeongryul Yun and Inchul Hwang
T/O Date : 2024.03
Process : 65nm CMOS
2025 Asia-Pacific Microwave Conference (APMC)
A Four-Phase Digital Buck Converter With MDLL-Based Adaptive Switching Frequency Compensation
Field : Power Management IC
Designer : Muhammad Abrar Akram, Ibrar Ali Wahla , Kyung-sung Kim, and In-Chul Hwang
T/O Date : -
Process : 65nm CMOS
2024 IEEE Access
A 65-nm duty-cycle corrector achieving 10% to 90% duty-correction range with <0.86% duty-cycle error
Field : Frequency Synthesizer
Designer : Muhammad Abrar Akram, Ibrar Ali Wahla , Bo-Hyeon Lee, and In-Chul Hwang
T/O Date : -
Process : 65nm CMOS
2024 Microelectronics Journal
A Fast-Transient Fully-Integrated Digital LDO With Current-Estimation Algorithm Based Coarse Loop
Field : Power Management IC
Designer : Jin-Woong Jang, Ibrar Ali Wahla, Junsik Choi, Muhammad Abrar Akram and In-Chul hwang
T/O Date : -
Process : 65nm CMOS
2024 IEEE Transactions on Power Electronics
Output-Capacitorless Tri-Loop Digital Low Dropout Regulator Achieving 99.91% Current Efficiency and 2.87 fs FOM
Field : Power Management IC
Designer : Muhammad Abrar Akram ,Kyung-Sung Kim, Sohmyung Ha and In-Chul Hwang
T/O Date : -
Process : 65nm CMOS
2021 IEEE Transactions on Power Electronics
Capacitor-Less Dual-Mode All-Digital LDO With ΔΣ-Modulation-Based Ripple Reduction
Field : Power Management IC
Designer : Muhammad Abrar Akram ,Wook Hong, Sohmyung Ha and In-Chul Hwang
T/O Date : -
Process : 110nm CMOS
2021 IEEE Transactions on Circuits and Systems II: Express Briefs
A 0.012mm2 , 0.96-mW All-Digital Multiplying Delay-Locked Loop Based Frequency Synthesizer for GPS-L4 band
Field : Frequency Synthesizer
Designer : Muhammad Abrar Akram, Myeong-Ho Lee, Dong-Hyeok Cho, and In-Chul Hwang
T/O Date : -
Process : 40nm CMOS
2020 IEEE International Conference on Consumer Electronics (ICCE)
Capacitorless Self-Clocked All-Digital Low-Dropout Regulator
Field : Power Management IC
Designer : Muhammad Abrar Akram, Wook Hong, and In-Chul Hwang
T/O Date : -
Process : 65nm CMOS
2019 IEEE Journal of Solid-State Circuits
Fast Transient Fully Standard-Cell-Based All Digital Low-Dropout Regulator With 99.97% Current Efficiency
Field : Power Management IC
Designer : Muhammad Abrar Akram, Wook Hong, and In-Chul Hwang
T/O Date : -
Process : 65nm CMOS
2018 IEEE Transactions on Power Electronics
A small-area and low-power digitally-controlled boost converter for LED driver IC
Field : Power Management IC
Designer : Dongsoon Jung, Kyung-Sung Kim and In-Chul Hwang
T/O Date : -
Process : 0.35um BCD
2017 International Conference on Electronics, Information, and Communication (ICEIC)
High Efficiency Multi-Channel LED Driver IC with Low Current-Balance Error Using Current-Mode Current Regulator
Field : Power Management IC
Designer : Seong-Jin Yoon, Je-Kwang Cho and In-Chul Hwang
T/O Date : -
Process : 0.35um BCD
2017 Journal of Electrical Engineering and Technology
A 110-nm CMOS 0.7-V Input Transient-Enhanced Digital Low-Dropout Regulator With 99.98% Current Efficiency at 80-mA Load
Field : Power Management IC
Designer : Tak-Jun Oh and In-Chul Hwang
T/O Date : -
Process : 110nm CMOS
2015 IEEE Transactions on Very Large Scale Integration (VLSI) Systems
A Stability-Secured Loop Bandwidth Controllable Frequency Synthesizer for Multi-Band Mobile DTV Tuners
Field : Frequency Synthesizer
Designer : Kyeong-Woo Kim, Muhammad Abrar Akram, and In-Chul Hwang
T/O Date : -
Process : 180nm CMOS
2015 IEIE Transactions on Smart Processing and Computing
An 180 nm CMOS 1.84-to-3.62 GHz fractional-N frequency synthesizer with skewed-reset PFD for removing noise-folding effect
Field : Frequency Synthesizer
Designer : Sang-Geun Bae, Kyeong-Woo Kim and In-Chul Hwang
T/O Date : -
Process : 180nm CMOS
2014 IEICE Electronics Express
A low-power and low-cost digitally-controlled boost LED driver IC for backlights
Field : Power Management IC
Designer : Tak-Jun Oh, Ara Cho, Seok-Lip Ki, and In-Chul Hwang
T/O Date : -
Process : 0.35um BCD
2012 IEEE Asian Solid State Circuits Conference (A-SSCC)
A 0.236 mm 2, 3.99 mW Fully Integrated 90 nm CMOS L1/L5 GPS Frequency Synthesizer Using a Regulated Ring VCO
Field : Frequency Synthesizer
Designer : In-Chul Hwang
T/O Date : -
Process : 90nm BCD
2012 IEEE Microwave and Wireless Components Letters
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