公开(公告)号：US20170229860A1

公开(公告)日：2017-08-10

申请号：US15067445

申请日：2016-03-11

Applicant: BROADCOM CORPORATION

Inventor： Kambiz Vakilian ,  Jingguang Wang

IPC: H02J1/00

CPC classification number: H02J1/00 ,  H01L27/00 ,  H01L28/00 ,  H02J9/005 ,  H02J50/80 ,  H02J2009/007 ,  H05B37/0254

Abstract: A system and method includes a power control circuit for controlling first power from a power supply provided to a first circuit includes a first stage and a second stage. The first stage includes a low power energy detector and a first power switch. The low power energy detector is configured to provide second power via the first switch in response to energy. The second stage includes a signal detector configured to detect a characteristic of a signal associated with the energy in response to the second power. The signal detector is configured have the first power provided to the first circuit in response to the characteristic being detected.