1. 01

   A Rising-Edge Computational Digital LDO With Load-Dependent Feedback and Fast Dynamic Voltage Scaling

   Yichen Xu, Rentao Wan, Mao Li, Zhaoqing Wang, Suhwan Kim, Ram K. Krishnamurthy, Xin Zhang, and Mingoo Seok

   invited manuscript under review, IEEE Journal of Solid-State Circuits (JSSC) · 2027

2. 02

   VSIMO: A DC-DC SIMO-based Current Mismatch Compensator Supporting Per-Output Bidirectional Power Flow for Stacked Voltage Domains Achieving >82% System Efficiency under up to 360-mA Load Mismatch

   Yichen Xu, Shahreer Ahmed Al Hossain, Baoqi Zhu, Suhwan Kim, Ram K. Krishnamurthy, Xin Zhang, and Mingoo Seok

   IEEE Symposium on VLSI Circuits (VLSI) · 2026

3. 03

   A 1mA-to-1050mA DLDO with Rising-Edge Feedforward Control and Load-Dependent Feedback Achieving 0.15-ps Load Transient FoM, 14-mV Output Ripple, and 25-mV/ns DVS Rate in a 28nm CMOS

   Yichen Xu, Rentao Wan, Mao Li, Zhaoqing Wang, Suhwan Kim, Ram K. Krishnamurthy, Xin Zhang, and Mingoo Seok

   IEEE Symposium on VLSI Circuits (VLSI) · 2026

4. 04

   Digital Low-Dropout Regulator-Assisted Buck DC-DC Converter Achieving 68-mV Droop Voltage and 95.5% Efficiency

   Yichen Xu, Zhaoqing Wang, Rentao Wan, Suhwan Kim, Minxiang Gong, Ram Kumar Krishnamurthy, Xin Zhang, and Mingoo Seok

   IEEE Solid-State Circuits Letter (SSCL) · 2025

5. 05

   AJPEG: A 26.4-pJ/pixel, 252-fps, 128x128 Image Sensor with an In-Sensor Analog DCT Processor for Data Compression

   Rentao Wan, Yichen Xu, Dong-Woo Jee, and Mingoo Seok

   IEEE Custom Integrated Circuits Conference (CICC) · 2025

6. 06

   A 93.9% Peak Efficiency 3V-to-40V-Input GaN-based DC-DC Converter with Unified Reliability and Efficiency Adaptive Control

   Zhaoqing Wang, Yichen Xu, Suhwan Kim, Nachiket Desai, Minxiang Gong, Ram K. Krishnamurthy, Xin Zhang, and Mingoo Seok

   IEEE Custom Integrated Circuits Conference (CICC) · 2025

7. 07

   Model-Based Study on the Limit of the Dynamic Load Regulation Performance of a Digital Low Dropout Regulator

   Yichen Xu, Zhaoqing Wang, Jonghyun Oh, and Mingoo Seok

   IEEE Transactions on VLSI Systems (TVLSI) · 2024

8. 08

   An Improved Silicon-Controlled Rectifier (SCR) for Low-Voltage ESD Application

   F. Du, F. Hou, W. Song, L. Chen, Y. Nie, Y. Qing, Yichen Xu, J. Liu, Z. Liu, and J. J. Liou

   IEEE Transactions on Electron Devices, vol. 67, no. 2, pp. 576–581 · 2020

9. 09

   A Robust Dual Directional SCR without Current Saturation Effect for ESD Applications

   F. Du, X. Dong, C. Yang, Yichen Xu, Z. Liu, J. Liu, and J. J. Liou

   IEEE 26th International Symposium on Physical and Failure Analysis of Integrated Circuits (IPFA) · 2019

Patents

1. 01

   A High Voltage LDO-Based Linear Charging System

   Yichen Xu and Xizhen Yin

   Issued Apr 28, 2023

2. 02

   A Substrate Switching Circuit for LDO Backflow Current Protection

   Yichen Xu and Xizhen Yin

   Issued Nov 18, 2022