公开(公告)号：US20210311540A1

公开(公告)日：2021-10-07

申请号：US16841138

申请日：2020-04-06

Applicant: Silicon Laboratories Inc.

Inventor： Rex Tak Ying Wong ,  Ricky Setiawan ,  Hua Beng Chan ,  Yushan Jiang ,  Pio Balmelli

IPC: G06F1/3237 ,  H02M1/00 ,  G06F1/3234 ,  G06F1/28 ,  G06F1/3296

Abstract: An integrated circuit includes a first plurality of circuits receiving a first internal power supply voltage, a first regulator receiving an external power supply voltage and supplying the first internal power supply voltage at a first rated power in response to the external power supply voltage when the integrated circuit is in an active mode, a second regulator receiving the external power supply voltage for supplying the first internal power supply voltage at a second rated power less than said first rated power in response to the external power supply voltage when the integrated circuit is in a low power mode, and a controller controlling a transition of the integrated circuit between the active mode and the low power mode. The controller activates all of the first plurality of circuits in the active mode, but only a subset of them while keeping remaining ones inactive in the low power mode.