公开(公告)号：US20190386565A1

公开(公告)日：2019-12-19

申请号：US16553035

申请日：2019-08-27

Applicant: QUALCOMM Incorporated

Inventor： Chris ROSOLOWSKI ,  Todd SUTTON ,  Orlando SANTIAGO ,  Joseph DUNCAN ,  Rashed Rashedul HOQUE ,  Marko KOSKI ,  Zdravko LUKIC

IPC: H02M3/157 ,  H02M3/158 ,  H03F3/24 ,  H04B1/40

Abstract: A voltage regulator circuit using predictively precharged voltage rails is generally disclosed. For example, the voltage regulator circuit may include a main switching regulator configured to provide a target voltage, the main switching regulator having a first voltage node, a precharge switching regulator configured to provide a precharge voltage, the precharge switching regulator having a second voltage node, the precharge voltage based on a difference between the target voltage and a next target voltage to be provided by the main switching regulator, and a precharge switch circuit configured to selectively couple the second voltage node to an output voltage node based upon a transition from the target voltage to the next target voltage.