A Fully Synthesizable All-Digital Dual-Loop Distributed Low-Dropout Regulator Xi

Abstract

Distributed low-dropout voltage regulators (LDOs) can mitigate the global IR drop and improve the local tran- sient performances for a high-current large-area power delivery network. However, they also face integration and current-sharing challenges. To tackle these challenges, this article presents an all- digital dual-loop distributed LDO with one global controller (GC) and multiple scalable local voltage regulators (LVRs). For fully synthesizable and easy integration, all the control circuits