← 返回 JSSC 论文列表JSSC 2009第11期Power Management0.5μmDLL
A Delay-Locked Loop Synchronization Scheme for High-Frequency Multiphase Hystere
基于延迟锁定环的高频多相DC-DC降压转换器同步方案
25-70MHz工作频率，83%@2W/80%@3.3W效率，17.5%-80%输出转换范围
降压转换器CMOSDC-DC转换器迟滞控制多相
▸采用DLL控制环自动同步多相转换器，无需外部同步
▸专用占空比控制环实现电流共享和纹波消除
▸高频工作范围25-70MHz，支持快速迟滞控制
Abstract
er , IEEE, Lin Xue, Peter Hazucha, Tanay Karnik , Senior Member , IEEE, and
Rizwan Bashirullah, Member , IEEE
Abstract—This paper reports a delay-locked loop (DLL) based
hysteretic controller for high-frequency multiphase dc-dc buck
converters. The DLL control loop employs the switching frequency
of a hysteretic comparator as reference to automatically synchro-
nize the remaining phases and eliminate the need for external
synchronization. A dedicated duty cycle control loop is used to
enable cur