公开(公告)号：US20040104713A1

公开(公告)日：2004-06-03

申请号：US10620310

申请日：2003-07-14

Applicant: STMicroelectronics S.r.I.

Inventor： Adalberto Mariani ,  Giulio Corva

IPC: G05F001/40

CPC classification number: H02M3/1584

Abstract: A multiphase buck type voltage regulator having at least two phases and including a first switching means that selectively connect a supply voltage to a load through a first current path; a second switching means that selectively connect said supply voltage to said load through a second current path; a first activation circuit that activates said first switching means; a first delay circuit that deactivates said first switching means after a first period of time; a second activation circuit that activates said second switching means; a second delay circuit that after a second period of time deactivates said second switching means; said first period of time depends on said supply voltage and on the output voltage; said second period of time depends on said supply voltage and on a voltage proportional to the difference of current that flows in said first and second current path.

Abstract translation: 一种具有至少两相的多相降压式电压调节器，包括：第一开关装置，其通过第一电流路径选择性地将电源电压连接到负载; 第二开关装置，其通过第二电流路径选择性地将所述电源电压连接到所述负载; 第一激活电路，其激活所述第一开关装置; 第一延迟电路，其在第一时间段之后停用所述第一切换装置; 第二激活电路，其激活所述第二开关装置; 第二延迟电路，在第二时间段之后，使所述第二开关装置失效; 所述第一时间段取决于所述电源电压和输出电压; 所述第二时间段取决于所述电源电压和与在所述第一和第二电流路径中流动的电流差成比例的电压。