A Flexible 128-Channel Neural Stimulator with Dynamic Voltage Scaling and Synchronous Charge Balancing for Visual Cortical Prosthesis. - Quynh-Trang Nguyen; Duy-Minh Nguyen; Kim-Hoang Nguyen; Xuan-Khanh Nguyen; Dang Duy Tung; Loan Pham-Nguyen; Minkyu Je (ISCAS, 2026)